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Sears 9MPD Furnace User Manual

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1. SLIT AAO 2 Pressure Switch Connection on 125 models Exhaust gt PVC Vent 45 Extension Pipe 27 DRAIN SIDE VIEW Rotate downward 5 to 10 Vent Some Models have Drain one pressure switch NOTE Built in channel will be angled 5 to 10 also 25 24 05 For left or right side mounted condensate trap the pressure tap on the condensate trap MUST be connected to the unused pressure tap located on the upper right hand corner of the plastic transition box Remove the plastic caps from the pressure taps on the condensate trap and the plastic transition and connect with the 5 16 OD rubber hose See Figure 8 and Figure 9 Connect the 5 g OD rubber hose with the 90 bend to the lower 440 01 1114 00 drain stub on the vent fitting and secure with a 5 g clamp Route the hose to the small drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with a 5 g clamp NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainage Horizontal Left Installations Dual Certified 9MPD A4 Models Horizontal Trap Connection NOTE TRAP MUST
2. For 050 Models 3 Ton Units For 080 Models 4 Ton 19 amp 223 4 Units d Low ap 2 0 1 823 2 V 0 2 795 g om 5 9 gt 0 3 747 8 amp M 0 4 677 Yo as gs 0 5 617 5 57 o g 0 6 544 07 Nc 0 8 0 9 1 0 For 100 Models 5 223 4 Units TEM Low MedL MedH Hi ap 01 1682 2081 2263 02 186 2031 2193 03 175 1969 zw Inches of W C Exterrnal Static Pressure 5 1031 1202 Bg 04 1547 TH9 1899 2086 2 34e 0 5 1498 1653 1825 1978 06 490 702 889 1077 0 6 1428 1583 1737 1854 07 S Ree 89 0 7 1355 1503 1650 1757 08 550 750 914 E 0 8 1267 1392 1548 1644 03 c e ee 676 833 o9 1266 wm 1515 10 e m T6 13 For 125 Models 5 Ton Units Speed Tap 5 912 0 1 2g 884 0 2 a 843 2 a 93 5 5 lc 5 575 790 1088 1378 ris 04 39 528 135 1040 1317 8509 0 5 88 5 472 677 979 1247 0 6 E Ww 608 909 1161 5 0 7 aus 528 827 1058 0 8 ie prese 440 01 1114 00 F53 53 Im 00 PLLE LO OPP CONNECTION DIAGRAM FIELD CONNECTION BOX SWITCH BK INTERLOCK DANGER ELECTRICAL SHOCK HAZARD DISCONNECT BEFORE SERVICING MAIN LIMI
3. Supply Air 25 24 13 iN Horizontal Trap Connection Clamp ears Pone out Cap PN Condensate Trap amp Gasket Preassemble and insert into furnace 3 4 Hose amp Clamps por Single Pressure Switch Connections on All models except 125 Pressure Switch Hose Transition Drain Line Horizontal Right Installations Dual Certified 9MPD See Figure 11 Note DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shown in Figure 11 Install the condensate trap hose assem blytothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole inthe casing and push the condensate trap into position Secure with the two screws Reconnect the drain hoses to the stubs on the vent fitting and the plastic transi tion and secure with the clamps 44001 1114 00 Relocate the plastic caps and clamps on the condensate drain trap from the vertical drain stub to the horizontal drain stubs Se cure the clamps tightly to prevent condensate leakage Mount the condensate drain trap in a vertical position to the right side of the furnace using the two screws and gasket that are pro vided Note The co
4. LEFT SIDE E51 TRAP COUNTERFLOW Uh ELECTRICAL GAS A The A VENT AIR INTAKE A ALTERNATE 413 16 UPFLOW HORIZONTAL 7 12 13 er id 1 a 6 nowProsoBiza 15 4 N9MP1075B12A 151 N9MP1080F16A 191 5 N9MP1100F14A 191 N9MP1100J20A 223 N9MP112520A 2234 211 4 N9MP2050B12A N9MP2075B12A 157 Bs NSMPAORDFTGA nemez iaa vr 2 Me 91 223 717 18 ee Ea Es REN D D CHEA p pres pe 99 440 01 1114 00 Cabinet to Combustible Clearances BOT BACK FRONT FLUE Horizontal position Line contact is permissible only between lines formed by intersections of top and two sides of furnace jacket and building joists studs or framing RIGHT SIDE TRAP COUNTERFLOW ELECTRICAL AIR INTAKE P ze ALTERNATE N VENT TRAP l UPFLOWIHORIZONTAL i 21 THERMOSTAT 7 1914 25 23 36 Horizontal Furnace Installation This furnace can be install
5. d NOTE Built in channel will be angled 5 to 10 also 25 24 14 Joining Pipe and Fittings A WWAZANFRENIBENIES FIRE HAZARD Observe all cautions and warnings printed on material containers to prevent possible death personal injury and or property damage Provide adequate ventilation and do NOT assemble near heat source or open flame Do NOT smoke while using solvent cements and avoid contact with skin or eyes This furnace is approved for venting with Schedule 40 PVC CPVC ABS Cellular Core pipe fittings and SDR 26 PVC NOTE All PVC CPVC ABS and Cellular Core pipe fittings sol vent cement primers and procedures MUST conform to Ameri can National Standard Institute and American Society for Testing and Materials ANSI ASTM standards Pipe and Fittings ASTMD1785 D2241 D2466 D2661 D2665 F 891 F 628 PVC Primer and Solvent Cement ASTM D2564 b Procedure for Cementing Joints Ret ASTM D2855 NOTE In order to create a seal that allows future removal of pipe RTV sealant MUST be used on the inlet pipe where it joins to the furnace PVC CPVC ABS and Cellular Core pipe and ce ment may be used on all other joints CAUTION Do use solvent cement that has become curdled lumpy or thickened and do NOT thin Observe precautions printed on containers For applications below 32 F use only low temperature type solvent cement 1 Cut pipe end square remove ragged edges and burrs C
6. 2 A plugged condensate drain line or a failed condensate pump will allow condensate to spill If the furnace is installed where a condensate spill could cause damage it is recommended that an auxiliary safety switch be installed to prevent operation of the equipment in the event of pump failure or plugged drain line If used an auxiliary safety switch should be installed in the R circuit low voltage ONLY 3 If the auxiliary switch in the condensate pump is used the furnace may shut down due to a blocked condensate line or failed pump To prevent frozen water pipes see the Frozen Water Pipe Hazard section on Page 4 of this manual Condensate Drain Trap Freeze Protection Special precautions MUST be made if installing furnace in an area which may drop below freezing This can cause improper op eration or damage to the equipment If the the furnace environ ment has the potential of freezing the drain trap and drain line must be protected Use 3 to 6 watt per foot at 115 volt 40 F self regulating shielded and waterproof heattape Wrap the drain trap and drain line with the heat tape and secure with the ties Follow the heat tape manufacturer s recommendations Upflow Installations Dual Certified 9MPD A4 Models Yellow Plastic Cap NOTE TRAP MUST BE PRIMED BEFORE OPERATION Vent Pipe Supply Air Vent Pipe Grommet TOP Venting 4 Combustion Air Pipe optional on some m
7. m zm ps mm Outside Dimension Base Spacer Side To Side 3 Setthe base overthe opening in the floor centering it over the opening Fasten the base to the floor with screws or Coil Cabinet Subbase nails See Figure 37 Figure 38 and Figure 39 c Furnace Subbase Plenum Plenum 15 15 137 17178 Combustible Floor Base 25 20 46b 4 1 4 Minimum clearance from back of hole to wall or other obstruction A 4 1 4 Minimum clearance from back of hole to wall or other obstruction 4 Drop the plenum through the opening in the base The Installation of flange of the plenum should rest on top of the subbase 225 loor Base 5 Positionfurnace or coil cabinet and furnace on subbase so it aligns between the locating tabs Wood Floor Wood Scre Plenum 25 20 46a A This subbase for combustible floors has been designed so that the height of the subbase raises the downflow coil off the floor to allow easy installation of the condensate drain See Figure 40 440 01 1114 00 Condensate Line Raised by Base 8 Checks and Adjustments Startup NOTE Refer to the start up procedures in the User s Informa tion Manual or to the Operating Instructions Label on the fur nace CAUTION If any sparks odors or unusual noises occur immediately shut OFF power to furnace Check for wiring errors or obstruction to blower Gas Supply Pressure Gas supply pressure should
8. 1012975 Coupling Air Intake 1012284 Grommet Vinyl 1009535 Drain Vent 1014003 Pipe PVC 1171527 Grommet Vent 1012697 Gasket Air Intake 1012583 Gasket Trap 1013701 Harness Wire 1013716 1013718 1013719 Hose Drain 1 1014358 Hose Drain 5 8 1014359 Hose Drain 3 16 1009238 Door Screws 1013349 Door Screw Retainers 1013725 Bushing Strain Relief 1945287 Installation Manual 44001111300 User s Manual 44102200300 1 2 2 1 1 1 1 o 2A 2 4 24 M o o o c o mm nm o a 2a 2a 2a 2a 22 ca 44 2a 424 PN om nm o c o c o mm nm lao gt ry PEDI d dm cao c oq l gt M T gt gt per y c ae 48 e mA c ues 440 01 1114 00 Replacement Parts 9MPD Models 9MPDO50F 12A4 9MPDO075F 12A4 9MPD080J16A4 9MPD100J14A4 9MPD100J20A4 amp 9MPD125L20A4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Key Description Part 9MPD No Functional Number 050F12A 075F12A 080J16A 100J14A 100J20A 125L20A 1 Heat Exchanger Primary 1012850 1 1012854 1 1012858 1 1
9. If Fiberglass insulation is used exterior to the structure the pipe MUST be boxed in and sealed against moisture 1 Whenthe ventor combustion air pipe height above the roof exceeds 30 orif an exterior vertical riseris used on a hori zontal vent to get above snow levels the exterior portion MUST be insulated 2 When combustion air inlet piping is installed above a sus pended ceiling the pipe MUST be insulated with moisture resistant insulation such as Armaflex or other equivalent type of insulation 3 Insulate combustion air inlet piping when run in warm hu mid spaces such as basements Sizing Combustion Air and Vent Pipe Consult Table 3 or Table 4 to select the proper diameter exhaust and combustion air piping Exhaust and combustion air piping is sized for each furnace Btuh size based on total lineal vent length on inlet or outlet side and number of 90 elbows required Two 45 elbows can be substituted for one 90 elbow The elbow or el bows used for vent termination outside the structure ARE counted including elbows needed to bring termination above ex pected snow levels The elbow inside the furnace on the 9MPD IS NOT included in the count Pipe Diameter Table N9MP1 amp 9MPD Models 50 000 75 000 amp 80 000 Btuh Furnaces 40 amp 5 90 elbows with 2 PVC pipe or 70 amp 5 90 elbows with 3 PVC pipe 100 000 Btuh Furnace 40 amp 5 90 elbows with 3 PVC pipe or 70 amp 5
10. Remove the pressure switch hose from the upper stub on the plastic transition box Relocate the plastic caps on the stubs ofthe plastic transition box from the lower stubs to the upper stubs and secure tightly with the clamps Route the pressure switch hose to the lower stub on the plastic transition box Cut off excess hose and discard Connectthe pres sure switch hose to the lower stub on the plastic transition box NOTE Failure to correctly install the pressure switch hose to the transition box can adversely affect the safety control operation Connect the 3 4 OD rubber hose with the 90 bend to the drain stub on the bottom of the plastic transition box and secure with a 3 4 clamp Route the hose tothe large drain stub onthe condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the transition and secure with a 3 4 clamp Connect the g OD rubber hose with the 90 bend to the left drain stub on the vent fitting and secure with 5 g clamp Route the hoseto the smaller stub onthe condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with a 5 clamp For left side or right side mounted condensate trap the pres sure tap on the condensate trap MUST be connected to the un used pressure tap located on the top of the plastic transition box Remove the plastic caps fromthe pressuretap onthe condensate trap and the plastic transition a
11. SSS 5 8 Hose amp Clamps Air Pipe N9MP2 ONLY 3 4 Hose amp Clamps Drain Line Single Pressure Switch Connections on all models except 125 25 23 58 Horizontal Trap Connection Clamp ears Pointed OUT Condensate Trap amp Gasket Preassemble and insert into furnace Horizontal Left Installations Single Pipe amp Direct Vent N9MP1 amp N9MP2 Models See Figure 15 NOTE DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shownin Figure 15 Install the condensate trap hose assemblytothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole in the casing and push the con densate trap into position Secure with the two screws Recon nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps Relocate the plastic caps and clamps on the condensate drain trap fromthe vertical drain stubs to the horizontal drain stubs Se cure the clamps tightly to prevent condensate leakage Mount the condensate drain trap in a vertical position to the left side of the furnace using the two screws and gasket that are pro vided Note The condensate trap will be located under the fur nace in a
12. vertical termination Ensure the termination location clear ance dimensions are as shownin Figure 48 and Figure 49 for horizontal termination 5 Partially assemble the concentric vent termination kit Clean and cement the parts using the procedures for Join ing Pipe and Fittings section of the manual A Cement the Y Concentric fitting to the 4 diameter kit pipe See Figure 47 B Cement the 3 rain cap to the 21 5 diameter Concentric Vent and Combustion kit part See Figure 47 NOTE A field supplied stainless Air Side Termination steel screw may be used to secure the rain cap to the pipe instead of cementing when field disassembly is desired for Roof Overhang cleaning See Figure 47 Drill clearance hole in rain cap and pilot hole in vent pipe Combustion Air um Vent 71 Maintain 12 clearance above highest antici pated snow level or grade whichever is great er Field supplied 25 22 02 Stainless steel screw 44001 1114 00 Concentric Vent Sidewall Attachment Strap Field Supplied Combustion Air org gt amp _ Flush to 1 max Combustion Air 45 Elbow Field Supplied 25 22 02 Note Securing strap must be field installed to prevent movement of termination kit in side wall 44001 1114 00 10 Install the rain cap and the small diameter pipe assem
13. Alternate Input Ratings USA ONLY BTUH BTUH Natural Standard Alternate Gas Gas Rating Rating Orifice Orifice Supply Pressure A WARNING FIRE HAZARD Failure to properly set input pressure can result in death personal injury and or property damage Do NOT set input rating above that shown on rating plate 1 Supply pressure can be checked using the 1 3 NPT port on the supply side of the gas valve 2 Gas input to burners MUST NOT exceed the rated input shown on rating plate 3 Do NOT allow minimum gas supply pressure to vary down ward Doing so will decrease input to furnace Refer to Table 6 for normal gas supply and manifold pressures Gas Pressures Below 2000 Supply Pressure Manifold Gas Important Note With Propane gas the rated input is obtained when the BTU content is 2 500 BTU per cubic foot and manifold pressure set at 10 W C f Propane gas has a different BTU content orifices MUST be changed by licensed Propane installer Measured input can NOT exceed rated input Any major change in gas flow requires changing burn er orifice size Gas Supply Pressure Gas supply pressure should be within minimum and maximum values listed on rating plate Pressures are usually set by gas sup pliers Manifold Gas Pressure Adjustment NOTE Make adjustment to manifold pressure with burners oper ating A WARNING FIRE OR EXPLOSION HAZARD Failure to turn OFF gas at shut off
14. F 12 Min u An cs Snow Level Dimension A is touching or 2 maximum separation 12 MIN Ground Level Sidewall Inlet Vent and Exhaust Air rre Snow Level Termination with Exterior Risers 18 Min for Cold Climates zE Sustained Below 0 FRONT VIEW SIDE VIEW li 12 Min 62 Grade or Snow Level Same Joist Space 25 23 73 Dimension A is touching or 2 maximum separation 440 01 1114 00 5 Gas Supply and Piping WARNING CARBON MONOXIDE POISONING FIRE AND SION HAZARD Models designated for Natural Gas are to be used with Natural Gas Only unless properly converted to use with LP gas Furnace operating with the wrong fuel result in death personal injury and or property damage NOTE The rating plate is stamped with the model number gas type and gas input rating In addition models manufactured for sale in Canada have orifice size information stamped on the rat ing plate Alternate BTUH Input Ratings USA Only The input rating of these furnaces can be changed from the stan dard input rating to the alternate input rating shown in Table 5 by changing the main burner orifices NOTE The input rating ot 80 000 BTUH models cannot be changed from the standard in put Changing of burner orifices MUST be done by a qualified ser vice technician See section on changing orifices or following page
15. Order from Service Parts NAHF003NG 1013816 440 01 1114 00 Manufacturers Number Mfr No See Rating Plate ALL Models Specifications N9MP2 N9MP2050B12A N9MP2075B12A N9MP2080F16A N9MP2100F14A N9MP2100J20A N9MP2125J20A General Gas Type Input Btuh Output Btuh Transformer Size VA T stat Heat Anticipator Temp Rise F Electrical Volts Hz F LA Gas amp Ignition Gas Type Gas Valve Regulation Type IgnitionType Series Manifold Press Inch s WC Std Main Orifices No Size Pilot Orifice Size Fan Controls Fan Control Type Fan Control Timed secs Combustion Flue Outlet Size Inches Std Outlet Temp 5 No Elbows Blower Pressure 5 No Elbows WC Blower Pressure 40 45 90 DWV Elbows WC Transition Bx Pressure 5 No Elbows WC Transition Bx Pressure 40 5 90 DWV Elbows WC Limits amp Controls Rollout Switch F Limit Control Setting F Standard Pressure Sw Part No Blower Switch Pressure Close WC Blower Switch Pressure Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC High Altitude Pressure Sw Part No Blower Switch Pressure Close WC Blower Switch Pressure Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC Long Vent Kit Part No Pressure Switch Part No Blower Switch Pressure Close WC Blower Switch Pressure
16. of furnace jacket and building joists studs or framing 9 Residential garage installations require Burners and ignition sources installed at least 18 above the floor Located or physically protected from possible damage by a vehicle 10 Local codes may require a drain pan under the entire fur nace and condensate trap when the furnace is installed in attic application Installation Positions This furnace can be installed in an upflow horizontal either left or right or downflow airflow position DO NOT install this furnace on its back For the upflow position the return air ductwork can be attached to either the left or right side panel and or the bottom For horizontal and downflow positions the return air ductwork must be attached to the bottom The return air ductwork must never be attached to the back of the furnace Furnace Installation Considerations The installation of the furnace for a given application will dictate the position of the furnace the airflow ductwork connections vent and combustion air piping Consideration must be given to the following Condensate Trap and Drain Lines The supplied condensate trap must be attached to the furnace side panel on either the left or right side For horizontal installa tions the drain trap is vertically attached to the side panel below the furnace A minimum clearance of 6 below the furnace is re quired for the condensate trap Downward slope of the conden
17. sate drain line from the condensate trap to the drain location must be provided Adequate freeze protection of the drain trap and the drain line must be provided See Condensate Drain Trap section for further details Leveling Proper leveling of the furnace must be provided to insure proper drainage of the condensate from the furnace The furnace must be level to within 4 from front to back and from side to side for upflow and downflow installations or top to bottom for horizontal installations Vent and Combustion Air Connections On the Dual Certified furnace the vent and combustion air pipes attach to the furnace through the top panel for the upflow and hori zontal installations For the downflow installation the vent and combustion air pipes attach to the furnace through the alternate locations on the furnace side panels Note On the Direct Vent furnace the vent pipe attaches to the fur nace through the side panels The combustion air pipe attaches to the top panel or to the alternate location on the side panel On the Single Pipe furnace the vent pipe attaches to the furnace through the furnace side panels Note Repositioning of the combustion blower is required for the vent pipe connection to the furnace through the right side panel See Vent and Combustion Air Piping section for further details 440 01 1114 00 Dimensions amp Clearances AIR INTAKE 7 VENT 9MPD
18. ucts of combustion Removal of the latent heat results in con densation of the water vapor The condensate is removed from the furnace through the drains in the plastic transition and the vent fitting The drains connect to the externally mounted condensate drain trap on the left or right side of the furnace The startup of a new furnace will involve a cycle or two of the fur nace to properly prime the condensate trap with water Until the trap is fully primed some condensate will be pulled into the com bustion blower The furnace may cycle on the pressure switch connected to the plastic transition box due to condensate buildup After the trap is primed the condensate will start draining from the furnace The combustion blower will clear out any remaining con densate in the blower housing through the vent fitting down stream of the blower Note that the condensate trap can also be primed by pouring water into the vent drain side of the trap Re move the small plastic cap and clamps from the unused drain stub onthe vent drain side of the condensate trap Connecta section of the 2 6 OD hose with a funnel to the drain stub and pour eight 8 ounces of water into the trap Remove the hose and replace the 44001 1114 00 plastic cap and clamp This will prime both the vent and the transi tion sides of the trap The condensate drain trap supplied with the furnace MUST be used The drain connection on the condensate drain trap is sized for 3
19. 000 40 10 40 70 Nat LP 125 000 115 000 40 10 40 70 115 60 9 8 115 60 8 9 115 60 9 0 115 60 9 0 115 60 10 5 115 60 11 2 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013802 22 2 0 1013803 2 0 18 11 8 10 850 5 7 51370 16x25x1 11 2 21 3 HW 5 9541 5 HW HW 579160 30 60 100 140 180 1013802 2 2 2 0 1013803 2 0 1 8 11 10 8 0 1050 5 7 51370 16x25x1 1155 2 21 5 3 NAHFOO2LP 1009509 NAHFOO2NG 1009510 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013812 1 5 1 3 1013813 1 2 1 0 11 10 10 1050 5 10 370 16 25 1 21 3 31 4 NAHFOOSLP 1013815 NAHF003NG 1013816 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013802 2 2 2 0 1013803 2 0 1 8 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013802 2 2 2 0 1013803 2 0 1 8 NAHAO02LV 1013518 1 0 0 8 2 0 1 8 NAHAO03LV 1013165 11 10 10 1050 PSC I 10 370 16x25x1 115 2 3 31 0 7 0 6 1 4 1 2 11 10 13 900 PSCPI 40 370 16x25x1 31 55 4 41 5 5 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013166 13 14 1 8 1 6 1013157 0 9 0 7 1 7 1 5 11 10 13 900 PSCAIy 40 370 16x25x1 31 4 410 5 NAHFOO2LP 1009509 NAHFO02NG 1009510 440 01 1114 00 CIRCULATION AIR BLOWER DATA
20. 4 PVC or CPVC pipe however alternate 1 5 CPVC nomi nal 5 g O D or vinyl tubing with a minimum inner diameter I D of 5 g may also be used as allowed by local codes Alternate drain pipes and hoses may be used as allowed by local codes The drain line must maintain a 1 4 per foot downward slope to ward the drain 4 per foot is recommended Installation of an overflow line is recommended when the 1 4 per foot slope to the condensate drain cannot be maintained See Figure 1 for proper routing and installation of the overflow DO NOT trap the drain line in any other location than at the con densate drain trap supplied with the furnace A WARNING FROZEN AND BURST WATER PIPE HAZARD If a condensate pump is installed a plugged condensate drain or a failed pump may cause the furnace to shut down Do not leave the home unattended during freezing weather without turning off water supply and draining water pipes or otherwise protecting against the risk of frozen pipes Failure to do so may result in burst water pipes serious property damage and or personal injury If possible DO NOT route the drain line where it may freeze The drain line must terminate at an inside drain to prevent freezing of the condensate and possible property damage 1 Acondensate sump pump MUST be used if required by lo cal codes or if no indoor floor drain is available The con densate pump must be approved for use with acidic condensate
21. 40 T stat Heat Anticipator 10 10 10 10 10 Temp Rise 35 65 40 70 40 70 40 70 40 70 Electrical Volts Hz FLA 115 60 9 8 115 60 8 9 115 60 9 0 115 60 9 0 115 60 10 5 115 60 11 2 Gas amp Ignition Gas Type Gas Valve HW SV9541M HW SV9541M HW SV9541M HW SV9541M HW SV9541M HW SV9541M Regulation Type SNAP SNAP SNAP SNAP SNAP SNAP IgnitionType Series HW HSP HW HSP HW HSP HW HSP HW HSP HW HSP Manifold Press Inch s WC Std Main Orifices No Size Pilot Orifice Size Fan Controls Fan Control Type HW ST9160 HW ST9160 HW ST9160 HW ST9160 HW ST9160 HW ST9160 Fan Control 30 30 30 30 30 30 Timed secs 60 100 140 180 60 100 140 180 60 100 140 180 60 100 140 180 60 100 140 180 60 100 140 180 Combustion Flue Outlet Size Inches Std Outlet Temp 5 No Elbows Blower Pressure 5 No Elbows WC Blower Pressure 40 45 90 DWV Elbows WC Transition Bx Pressure 5 No Elbows WC Transition Bx Pressure 40 45 90 DWV Elbows WC Limits amp Controls Rollout Switch F Limit Control Setting F Standard Pressure Sw Part No 1013802 1013802 1013811 1013801 1013802 1013166 Blower Switch Pressure Close WC 13 Blower Switch Pressure Open WC 1 1 Transition Switch Pressure Close WC 22 2 2 18 2 3 2 2 1 8 Transition Switch Pressure Open WC 2 0 2 0 1 6 2 1 2 0 1 6 High Altitude Pressure Sw Part No 1013803 1013803 1013812 1013803 1013803 10
22. 90 elbows with 3 PVC pipe amp Long Vent Kit See Tech Manual If more than five elbows are required reduce the length of both the inlet and exhaust pipes 5 for each additional elbow used NOTE It is allowable to use larger diameter pipe and fitting than shown in the tables but not smaller diameters than shown Pipe Diameter Table N9MP2 Models 50 000 amp 80 000 Btuh Furnaces 40 amp 5 90 elbows with 2 PVC pipe or 70 amp 5 90 elbows with 3 PVC pipe 75 000 Btuh Furnaces 25 amp 3 90 elbows with 2 PVC pipe or 40 amp 5 90 elbows with 2 PVC pipe amp Long Vent Kit See Tech Manual or 70 amp 5 90 elbows with 3 PVC pipe 100 000 Btuh Furnace 40 amp 5 90 elbows with 3 PVC pipe or 70 amp 5 90 elbows with 3 PVC pipe amp Long Vent Kit See Tech Manual 125 000 Btuh Furnace 40 amp 5 90 elbows with 3 PVC pipe Elbows are DWV Long Radius Type for 2 and 3 vents If more than five elbows are required reduce the length of both the inlet and exhaust pipes 5 foreach additional elbow used For Concentric Termination Kit Venting table see Section 11 in this manual Vent Termination Clearances WARNING CARBON MONOXIDE POISONING FIRE AND EXPLO SION HAZARD Inlet and outlet pipes may NOT be vented directly above each other Failure to properly vent this furnace can result in death personal injury and or property damage 1 D
23. ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED MUST BE REPLACED WITH TYPE AWM 105 C WIRE OR ITS EQUIVALENT THERMOSTAT ONILLAS 7235 00 7235 08 OdS 0 AV T3Q NO 1 V3H AYTA 440 1V3H OAS 09 AV IHO 440 1000 OAS AVT3Q NO 1009 a gt 2 O Z 2 15 Oo c m 1012910 wepe Burm T 55 25 23 95 2 1 N9MP2 9MPD 440 01 111400 Representative drawing only some models may vary in appearance Replacement Parts N9MP1 amp N9MP2 Models N9MP1050B12A4 N9MP1075B12A4 9 1080 16 4 N9MP1100F14A4 N9MP1100J20A4 amp N9MP1125J20A4 N9MP2050B12A4 N9MP2075B12A4 2080 16 4 2100 14 4 N9MP2100J20A4 amp 9 2125 20 4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Description Part Functional Number Heat Exchanger Primary 1012847 1012851 1012855 1012856 1012859 Heat Exchanger Secondary 1013760 1013761 1013764 1013765 1013766 Motor Blower 1009052 1013341 1011906 Mount Motor kit 1013379 522020024 Wheel Blower 1013011 1011420 Transformer 1012722 Capacitor 10Mfd 370V 1094956 1 5Mfd 370V 1094239 40Mfd 370V 1012176 Control Fan Timer 1012358 Switch Interlock 1012351 Switch Pressure 1013802 1013811 1013801 1013166 Blower Exhaust Jakel 1014338 1014341 Valve Gas HSP Nat 1
24. BE PRIMED BEFORE OPERATION Model shown with two Combustion Air pressure switches Vent Pipe Pipe optional 5 16 OD Rubber Hose Plastic Cap Clamp ears Pointed OUT Preassemble and insert into furnace Exhaust c i Vent Pipe Grommet PVC Vent Extension Pipe Ww Combustion ud Blower Return Air Pressure Switch Hose Transition 3h Hose amp Clamps Vent Fitting amp Clamps Yellow Plastic Cap amp Clamps 5 5 Hose amp Clamps Plastic Cap s Vent Fitting amp Clamps tt 11 Section 2 PVC Pipe Field Supplied Condensate Trap amp Gasket NOTE Built in channel will be angled 5 to 10 also Rubber Couplings 90 Elbow DRAIN SIDE VIEW Rotate downward 5 to 10 Single Pressure Switch Connections on All models except 125 Horizontal Left Installations Dual Certified 9MPD See Figure 10 Note DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the cla
25. DTE Built in channel will angled 5 to 10 also Return For left side or right side mounted condensate trap the pres sure tap on the condensate trap MUST be connected to the un used pressure tap located on the upper right hand corner of the plastic transition box Remove the plastic caps from the pressure tapsonthe condensatetrap andthe plastictransition and connect with the 5 45 OD rubber hose See Figure 13 and Figure 14 Connect the 5 g OD rubber hose with the 90 bend to the lower 25 24 05 drain stub on the vent fitting and secure with 3 8 clamp Route the hose to the smaller drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with a 5 8 clamp NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainage 44001 1114 00 Horizontal Left Installations Single Pipe N9MP1 amp Direct Vent N9MP2 A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION Models shown have two pressure switch Plastic Cap Yellow Plastic Cap Vent Fitting Vent Pipe amp Clamps M IS FLOW CS Exhaust c Vent Fitting amp Clamps 2 Air gt Inlet Combustion Pressure Switch Hose Transition Return Air
26. Models See Figure 17 NOTE DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shown in Figure 17 Install the condensate trap hose assemblytothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole in the casing and push the con densate trap into position Secure with the two screws Recon 44001 1114 00 nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps Mount the condensate drain trap in a vertical position to eitherthe right or left side of the furnace using the two screws and gasket that are provided If needed remove the hole plugs from the fur nace side panel and relocatedtothe open setof holesinthe oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortenedif an elbow is usedto connectthe PVC vent e
27. Optional LP ny switches conversion Drip Leg and Union Union should be outside the cabinet Manual shut off valve MUST be upstream of dripleg union and furnace Gas Pipe Grommet Union may be installed inside the cabinet when necessary Single Pipe because of clearances 25 23 39 Natural Gas Input Rating Check Example NOTE The gas meter can be used to measure input to furnace 5 Time Per Gubic BIU Per lor BTU Content Per Hour Foot in Seconds Hour Rating is based on a natural gas BTU content of 1 000 BTU s per cubic meter Check with gas supplier for actual BTU content 1 000 3 600 75 000 1 000 x 3 600 48 75 000 BTUH 1 Makesure burner compartment dooris in place before per forming the following steps 3 Time how many seconds it takes the smallest dial on the 2 Turn OFF gas supply to all appliances and start furnace gas meter to make one complete revolution Refer to Ex ample 44001 1114 00 4 Relight all appliances and ensure all pilots are operating NOTE If meter uses a 2 cubic foot dial divide results seconds by two Gas Piping Requirements NOTE The gas supply line must be installed by a qualified ser vice technician accordance with all building codes In the state of Massachusetts gas supply connections MUST be performed by a licensed plumber or gas fitter 1 Properly size gas pipe to handle combined appliance lo
28. at tachthe PVC vent extension pipe to the vent fitting withthe clamp Remove the pressure switch hose from the upper stub on the plastic transition box Relocate the plastic caps onthe stubs ofthe plastic transition box from the lower stubs to the upper stubs and secure tightly with the clamps Route the pressure switch hose to the lower stub on the plastic transition box Cut off excess hose and discard Connectthe pres sure switch hose to the lower stub on the plastic transition box Ensure thatthe hoseis routed abovethe stub onthe transition box so that condensate does not collect in the hose NOTE Failure to correctly install the pressure switch hose to the transition can ad versely affect the safety control operation Connect the 3 4 OD rubber hose with the 90 bend to the large drain stub on the condensate trap and secure with a 3 4 clamp Route the hose to the drain stub on the bottom of the plastic tran sition box Cut off excess hose and discard Connect the hose to the drain stub on the transition and secure with a 3 4 clamp Connect the 5 OD rubber hose with the 90 bend to the lower drain stub on the vent fitting and secure with a 5 8 clamp Route the hose to the smaller drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with a 5 clamp NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainag
29. box Remove the plastic caps from the pressure taps on the conden sate trap and the plastic transition and connect the 5 16 OD rub ber hose See Figure 12 NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainage 44001 1114 00 Upflow Installations Single Pipe N9MP1 amp Direct Vent N9MP2 A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION LEFT Side Venting Vent Fitting DRAIN SIDE VIEW amp Clamps gt Rotate downward 5 to 10 PVC Vent Extension Pipe Trap Connection Clamp ears Pointed OUT NOTE Built in channel will be angled 5 to 10 also 2 Pressure Switch Connection on all 125 models Po Single Pressure Switch Connections on all models except 125 Preassemble amp insert into furnace dwg 25 24 06 Upflow Installations Single Pipe amp Direct Vent N9MP1 amp N9MP2 Models See Figure 13 NOTE DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hos
30. failure was limit circuit opened during run Main limit switch Limit and rollout switch wiring is in good condition and securely connected Restriction in duct work Dirty filter 6 Flashes 4 Flashes Combustion air blower is de energized Circulating blower is de energized after the OFF delay After 5 minute delay time control system will reset and initiate a new ignition sequence Soft Lockout Blower failure typical Dead blower 7 Flashes Limit trip took longer than 2 minutes to reset Blocked ductwork System will start a new ignition sequence after 1 hour if call for heat still present 11 Concentric Termination Vent Termination Clearances 4 Theventtermination shall be located atleast 4 horizontally from any electric meter gas meter gas regulator and any relief equipment These distances apply ONLY to U S A WARNING installations 5 The vent termination is to be located at least 3 above any CARBON MONOXIDE POISONING FIRE AND EXPLO forced air inlet located within 10 and at least 10 from a SION HAZARD combustion air intake of another appliance except another Failure to properly vent this furnace can result in direct vent furnace intake death personal injury and or property damage 6 In Canada the Canadian Fuel Gas Code takes prece dence over the preceding termination instructions Inlet and outlet pipes may NOT be vented directly above each other standard vent terminals Concen
31. gas lines etc Ventilation Air Some provincial codes andlocal municipalities require ventilation or make up air be brought into the conditioned space as replace ment air Whichever method is used the mixed return air temper ature across the heat exchanger MUST not fall below 60 F or flue gases will condense in the heat exchanger This will shorten the life of the heat exchanger and possibly void your warranty Venting and Combustion Air Check Thefollowing information is supplied to allowthe installerto make adjustments to the setup of existing appliances IF REQUIRED based on good trade practices local codes and good judgement of the installer Manufacturer does NOT take responsibility for modifications made to existing equipment NOTE If this installation replaces an existing furnace from a commonly vented system the original venting system may no longer be sized to properly vent the attached appliances im properly sized venting system may cause the formation of con densate in the vent and the leakage or spillage of vent gases To make sure there is adequate combustion air for all appliances MAKE THE FOLLOWING CHECK Vent Check Draft Hood Vent Pipe Typical Gas Water Heater Vet Match If flame pulls towards draft hood this indicates suffi cient venting WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system b
32. natural gas at altitudes above 2 000 orifice change and or manifold pressure adjustment may be required to suit gas supplied Check with gas supplier If orifice sizing is needed it should be based on reducing the input rating by 296 natural or 4 LP for each 1 000 above sea level See Table 7 and Figure 28 for required pressure change and or orifice change for high altitudes 2 Foroperation with LP gas ataltitudes above 2 000 gas ori fices MUST be changed and manifold pressure MUST be maintained as per Table 6 For the 50 000 75 000 100 000 and 125 000 BTUH Orifice sizes are 54 for 0 2000 above sea level 55 for 2000 7000 above sea level and 56 for 7000 8000 above sea level For the 80 000 BTUH models the orifice size is 55 for 0 4 000 above seal level and 56 for 5 000 8 000 above sea lev el Orifices can be ordered through your distributor See Figure 28 Changing Orifices Measure from face of orifice to the back side of the manifold 42 Orifice size for 50 000 75 000 100 00 amp 125 000 BTUH models NOTE The derating of these units at 2 Natural and 496 L P has been tested and approved by High Altitude Air Pressure Switch Altitudes over 4 000 require a different air pressure switch than the one installed atthe factory Check parts list for pressure switch and consult your distributor for part number and availability In Canada provincial codes may govern install
33. result in death and or personal injury Turn OFF power to furnace before changing speed taps NOTE The speed taps that the manufacturer sets from the facto ry for this product are based on a nominal 400 CFM per ton cool ing and the basic mid range on the temperature rise for heating Since the manufacturer cannot establish the static pressure that will be applied to the unit it is the responsibility of the installer dealer contractor to select the proper speed taps for the applica tion when the unit is installed If it is necessary to change speeds refer to steps below 1 Referto Furnace Wiring Diagram for location of the heating and cooling speed taps located on the electronic fan control as well as location of unused blower motor speed leads Use the chart Table 9 to determine the blower motor speed settings i Blower Speed Chart Wire Color Motor Speed tow 9 Furnace Maintenance CAUTION It is recommended that the furnace be inspected and serviced on an annual basis before the heating season by a qualified service technician 44001 1114 00 2 Change the heat or cool blower motor speed by removing the motor lead from the Heat or Cool terminal and re place it with the desired motor speed lead from the Un used Motor Lead location Connect the wire previously removed from the Heat or Cool terminal to the vacated Unused Motor Lead terminal 3 Ifthe same speed must be used for both
34. vertical position when the furnace is placed horizontally onthe left side If needed remove the hole plugs from the furnace side panel and relocated to the open set of holes in the opposite side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Relocate the combustion blower on the plastic transition box Re move the four 4 screws that secure the blower to the transition box Rotate the blower 180 so the blower snoutis pointing up and secure with the four 4 screws Note that some combustion blow 440 01 1114 00 ers have plastic spacers on the mounting legs of the blower lo cated at the 6 and 12 o clock positions blower snout to the left or right that are required for proper fit up of the blower to the transi tion Use caution to not over tighten the screws to prevent strip ping out of the plastic mounting holes Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps NOTE The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe Plug the left drain stub on the vent fitting with the yellow plastic cap Connect the 3 4 OD rubber hose with the 90 bend to the large drain stub on the condensate trap and secure with a 3 4 clamp Route the hose to the drain stub on the bottom ofthe plastic transi tion box Cut off excess hose and discard Connect the hose tothe drain stub on the transitio
35. 013350 Burner Pilot HSP 1008731 Igniter Sensor HSP 1009524 Orifice Burner 42 Nat 1011351 44 Nat 1011352 Switch Limit Rollout 1013102 Burner Assembly 1008723 1008724 1008725 1008726 Switch Limit Main 34335001 34335002 1320361 1008445 1320367 Orifice Pilot 018 503211 440 01 1114 00 Replacement Parts N9MP1 amp N9MP2 Models N9MP1050B12A4 N9MP1075B12A4 N9MP1080F16A4 N9MP1100F14A4 N9MP1100J20A4 amp N9MP1125J20A4 N9MP2050B12A4 N9MP2075B12A4 2080 16 4 2100 14 4 N9MP2100J20A4 amp 9 2125 20 4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Description fabu el 3 050B 075B 080F 100F 100J 125J 050B 075B 080 100F 100J 125J Panel Top 1012324 1 1 1012325 1 1 1012326 1012954 1012955 1012956 Gasket Top Panel 1012602 1012603 1012604 Partition Blower 1014009 1014010 1014011 1014015 1014014 1014016 Housing Blower 1012972 1012888 Panel Blower Cutoff 721020013 721020008 Hanger Blower 1012328 Door Blower 1013215 1013216 1013217 1013207 1013208 1013209 Bracket Door Filler 1014005 1014006 1014007 Door Front 1013789 1013790 1013791 1013210 1013211 1013212 Clamp Capacitor 1095020 1095022 Transition Assembly 1012280 1012281 1012282 Gasket Blower 1014425 Board Insulating 1012417 1012418
36. 1 1012862 1 2 Heat Exchanger Secondary 1013762 1 1013763 1 1013765 1 1 1 1013767 1 3 Motor Blower 1009052 1 1 1013341 1 1 1011906 1 1 4 Mount Motor kit 1013379 1 522020024 1 1 1 1 1 5 Wheel Blower 1013011 1 1011420 1 1 1 1 1 6 Transformer 1012722 1 1 1 1 1 1 7 Capacitor 7 5Mfd 370V 1094239 1 1 10Mfd 370V 1094956 1 1 40Mfd 370V 1012176 1 1 8 Control Fan Timer 1012358 1 1 1 1 1 1 9 Switch Interlock 1012351 1 1 1 1 1 1 10 Switch Pressure 1013802 1 1 1 1 1013812 1 1013166 1 11 Blower Exhaust Jakel 1014388 1 1 1 1 1 1014341 1 12 Valve Gas HSP Nat 1013350 1 1 1 1 1 1 13 Burner Pilot HSP 1008731 1 1 1 1 1 1 14 Igniter Sensor HSP 1009524 1 1 1 1 1 1 15 Orifice Burner 42 Nat 1011351 2 3 4 4 5 44 Nat 1011352 4 16 Switch Limit Rollout 1013102 2 2 2 2 2 2 17 Burner Assembly 1008723 1 1008724 1 1008725 1 1 1008726 1 18 Switch Limit Main 1320366 1 34335002 1 1008445 1 1320367 1 1 1 19 Orifice Pilot 018 503211 1 1 1 1 1 1 Denotes Brand 440 01 1114 00 Replacement Parts 9MPD Models 9MPDO5OF 12A4 9MPDO075F 12A4 9MPD080J16A4 9MPD100J14A4 9MPD100J20A4 amp 9MPD125L20A4 Natural Gas
37. 1012419 Box Collector 1012128 1012244 1012245 Gasket Transition 1013079 1013080 1013083 Gasket Collector Box 1012593 1012594 1012595 Partition Front Ht Exchanger 1012646 1012647 1012649 1012651 1012652 440 01 1114 00 Replacement Parts N9MP1 amp N9MP2 Models N9MP1050B12A4 N9MP1075B12A4 N9MP1080F16A4 1100 14 4 N9MP1100J20A4 amp N9MP1125J20A4 N9MP2050B12A4 N9MP2075B12A4 N9MP2080F16A4 N9MP2100F14A4 N9MP2100J20A4 amp N9MP2125J20A4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Description pat 00 Non Functi 0508 075B osor 100r 100 125 050B 075B O80F 100F 100 125 on Functional Number 12A 12A 16A 14A 20A 20A 12A 12A 16A 14A 20A 20A 2 x z 5 z 2 z 2 5 2 gt Gasket Attachment Plate 1012542 1012543 1012544 1012545 Cover Junction Box 1012350 Box Junction 1012349 Tube Pilot 1013077 1012832 1012834 Bracket Pilot 1010901 Manifold 1012276 1012277 1012278 1012279 Bottom Burner Box 1012334 1012335 1012336 Baffle Burner Box 1012338 1012339 1012340 Top Burner Box 1013702 1013703 1013704 Bracket Manifold Support 1012377 Bracket Burner Box Side 1012532 Bracket Control Mounting 1012321 Tube Sensor 1009238 Trap Drain Assembly 1013676 Sightglass 1012756 PART NOT ILLUSTRATED Clamp Hose 3 4 1012976 Clamp Hose g
38. 13157 Blower Switch Pressure Close WC 0 9 Blower Switch Pressure Open WC 0 7 Transition Switch Pressure Close WC 2 0 2 0 1 5 2 0 2 0 1 7 Transition Switch Pressure Open WC 18 18 13 1 8 18 1 5 Long Vent Kit Part No 0011 0021 Pressure Switch Part No 1013518 1013515 Blower Switch Pressure Close WC 1 0 1 0 Blower Switch Pressure Open WC 0 8 0 8 Transition Switch Pressure Close WC 2 0 1 7 Transition Switch Pressure Open WC 1 8 1 5 High Altitude Long Vent Part No 0031 Pressure Switch Part No 1013165 Blower Switch Pressure Close WC 0 7 Blower Switch Pressure Open WC 0 6 Transition Switch Pressure Close WC 14 Transition Switch Pressure Open WC 12 Blower Data Type amp Size 11 8 11 8 11 10 11 10 11 10 11 10 Motor Amps Rpm 10 850 8 0 1050 10 1050 10 1050 13 900 13 900 Motor Type H p 5 1 5 5 PSC 5 3 Cap Mfd Volts 7 51370 7 51370 10 370 10 370 40 370 40 370 Filter Type amp Size Permanent not supplied 16x25x1 16x25x1 16x25x1 16x25x1 16x25x1 16x25x1 Cool Cap Tons 5 W C L ML MHi amp Hi 115 2 21 5 3 115 2 215 3 215 3 315 4 1172 2 3 31 31 5 4 410 5 315 4 415 5 Gas Conversion Kits Nat to LP NAHFOO2LP 1009509 NAHFOO2LP 1009509 LP to Nat 002 1009510 1013815 NAHFO002NG 1009510
39. 50B12A4 N9MP1075B12A4 1080 16 4 1100 14 4 N9MP1100J20A4 amp N9MP1125J20A4 N9MP2050B12A4 N9MP2075B12A4 N9MP2080F16A2 N9MP2100F14A4 N9MP2100J20A4 amp N9MP2125J20A4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Key Description pat 0 N9MP2 Non Functional 050B 075B osor 100F 100 125 050B 075B 080 100F 100 125 0 on Functiona Number 12A 12A 16A 14A 20A 20A 12A 12A 16A 14A 20A 20A Gas Conversion Kits Nat to LP NAHFOO2LP 1009509 1 1 LP to Nat NAHFOO2NG 1009510 1 1 Nat to LP NAHFOO3LP 1013815 LP to Nat 1013816 Order from Service Parts 1 1 1 1 1 1 1 1 Denotes Brand 440 01 1114 00
40. DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shown in Figure 12 Install the condensate trap hose assemblytothe furnace casing Hook one side ofthe clamp ears 44001 1114 00 onthe drain stub through the hole in the casing and push the con densate trap into position Secure with the two screws Recon nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps Mount the condensate drain trap in a vertical position to either the right or left side of the furnace using the two screws and gasket that are provided If needed remove the hole plugs from the fur nace side panel and relocated to the open set of holes in the oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications For both right and left side vent remove the 90 elbow fromthe vent fitting by loosening the clamp on the vent fitting Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe f
41. Elbows WC Transition Bx Pressure 5 No Elbows WC Transition Bx Pressure 40 5 90 DWV Elbows WC Limits amp Controls Rollout Switch F Limit Control Setting F Standard Pressure Sw Part No Blower Switch Pressure Close WC Blower Switch Pressure Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC High Altitude Pressure Sw Part No Blower Switch Pressure Close WC Blower Switch Pressure Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC Long Vent Kit Part No Pressure Switch Part No Blower Switch Pressure Close WC Blower Switch Pressure Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC High Altitude Long Vent Part No Pressure Switch Part No Blower Switch Pressure Close Blower Switch Pressure Open WC WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC Blower Data Type amp Size Motor Amps Rpm Motor Type H p Cap Mfd Volts Filter Type amp Size Permanent not supplied Cool Cap Tons 5 W C L ML MHi amp Hi Gas Conversion Kits Nat to LP LP to Nat Order from Service Parts Nat LP 50 000 46 000 40 10 35 65 Nat LP 75 000 69 000 40 10 40 70 Nat LP 80 000 73 600 Nat LP 100 000 92 000 40 10 40 70 Nat LP 100 000 92
42. N9MP1 amp N9MP2 9MPD ingle Stage Recognize safety information This is the safety alert iibi IN When you see this symbol on the furnace and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING or CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards those that will result in severe personal injury or death WARNING signifies a hazard that could result in personal injury or death CAUTION is used to identify unsafe practices that could result in minor personal injury or product and property damage Installing and servicing heating equipment can be hazardous due to gas and electrical components Only trained and qualified personnel should install repair or service heating equipment Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters All other operations must be performed by trained service personnel When working on heating equipment observe precautions in the literature on tags and on labels attached to or shipped with the unit and other safety precautions that may apply Follow all safety codes In the United States follow all safety codes including the current edition National Fuel Gas Code NFGC NFPA No 54 ANSIZ223 1 In Canada refer to the current edition of the National Standard Canada CAN CGA B149 1 and 2 M91 Natural Gas and Propane Installation Codes
43. NSCNGPIC Wear safety glasses and work gloves Have fire extinguisher available during start up and adjustment procedures and service calls These instructions cover minimum requirements and conform to existing national standards and safety codes In some instances these instructions exceed certain local codes and ordinances especially those that may not have kept up with changing residential construction practices Werequre these instructions as a minimum for a safe installation FAN ASSISTED DIRECT VENT GAS FURNACE Manufactured by EFFICIENCY RATING International Comfort Products Corporation USA CERTIFIED ama Lewisburg TN 37091 CERTIFIED Table of Contents 1 Safe Installation Requirements 7 Ductwork and Filter 2 Installation 8 Checks and Adjustments 3 Combustion amp Ventilation Air 9 Furnace Maintenance 4 Vent amp Combustion Air Piping 10 Sequence of Operation amp Diagnostics 5 Gas Supply and Piping 11 Concentric Vent Termination 6 Electrical Wiring 12 Tech Support and Parts A WARNING Electric Shock H d Pe eee FIRE OR EXPLOSION HAZARD All Lower Berore This furnace is not designed for use in mobile homes trailers or recreational vehicles EE Such use could result in death bodily injury in death personal injury and or property damage and or property damage Printed in U S A LP1 12 03 2002 440 01 1114 00 N9MP1 Indoor combustion air 1 pipe o
44. OSLP 1013815 NAHF003NG 1013816 NAHFOO2LP 1009509 NAHFOO2NG 1009510 HW SV9541M SNAP HW HSP HW SV9541M SNAP HW HSP HW ST9160 HW ST9160 30 30 60 100 140 180 60 100 140 180 1013801 1013802 2 3 2 2 2 1 2 0 1013803 1013803 2 0 2 0 1 8 1 8 NAHAO01LV NAHAO02LV 1013518 1013515 1 0 1 0 0 8 0 8 2 0 1 7 1 8 1 5 NAHAO03LV 1013165 0 7 0 6 1 4 1 2 11 10 10 1050 5 10 370 16 25 1 11 2 3 31 11 10 13 900 PSCPI 40 370 16x25x1 31 55 4 41 5 5 NAHFOO2LP 1009509 NAHFOO2NG 1009510 HW SV9541M SNAP HW HSP HW ST9160 30 60 100 140 180 1013166 13 14 1 8 1 6 1013157 0 9 0 7 1 7 1 5 11 10 13 900 PSCAIy 40 370 16x25x1 31 4 410 5 Manufacturers Number Mfr No See Rating Plate ALL Models Specifications 9MPD 9MPD050F12A OMPDO75F 12A 9MPD080J16A 9MPD100J14A 9MPD100J20A 9MPD125L20A General Gas Type Input Btuh Output Btuh Transformer Size VA T stat Heat Anticipator Temp Rise F Electrical Volts Hz F LA Gas amp Ignition Gas Type Gas Valve Regulation Type IgnitionType Series Manifold Press Inch s WC Std Main Orifices No Size Pilot Orifice Size Fan Controls Fan Control Type Fan Control Timed secs Combustion Flue Outlet Size Inches Std Outlet Temp 5 No Elbows Blower Pressure 5 No Elbows WC Blower Pressure 40 45 90 DWV
45. Open WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC High Altitude Long Vent Part No Pressure Switch Part No Blower Switch Pressure Close Blower Switch Pressure Open WC WC Transition Switch Pressure Close WC Transition Switch Pressure Open WC Blower Data Type amp Size Motor Amps Rpm Motor Type H p Cap Mfd Volts Filter Type amp Size Permanent not supplied Cool Cap Tons 5 W C L ML MHi amp Hi Gas Conversion Kits Nat to LP LP to Nat Order from Service Parts 440 01 1114 00 Nat LP 50 000 75 000 45 500 68 000 40 40 10 40 70 Nat LP Nat LP 80 000 72 000 10 35 65 Nat LP Nat LP 100 000 100 000 91 000 96 500 40 40 10 10 40 70 40 70 LP 125 000 113 750 40 10 40 70 115 60 9 8 115 60 8 9 115 60 9 0 115 60 9 0 115 60 10 5 115 60 11 2 HW SV9541M SNAP HW HSP HW SV9541M SNAP HW HSP HW SV9541M SNAP HW HSP HW ST9160 HW ST9160 HW ST9160 30 30 30 60 100 140 180 60 100 140 180 60 100 140 180 1013802 1013811 22 23 1 8 2 0 2 1 1 6 1013803 1013803 1013812 2 0 2 0 1 5 1 8 1 8 1 3 NAHAO01LV 1013518 1 0 0 8 20 18 0031 1013165 0 7 0 6 14 12 11 8 10 850 5 7 51370 16x25x1 11 2 21 3 11 8 8 0 1050 5 7 51370 16x25x1 11 5 2 21 5 3 11 10 10 1050 5 10 370 16 25 1 21 3 315 4 NAHFO
46. Replacement part supplied will be current active part For parts not listed consult place of purchase Key Description Non Functional Number 050F12A 075F12A 080J16A 100J14A 100J20A 125L20A A Panel Top 1012342 1 1 1012343 1012344 Gasket Top Panel 1012603 1012604 1012605 Partition Blower 1014018 1014014 1014016 1014017 Housing Blower 1012972 1012888 Panel Blower Cutoff 721020013 721020008 Hanger Blower 1012328 Door Blower Tempstar only 1013151 Tempstar only 1013152 Tempstar only 1013153 Comfortmaker Keeprite only 1013141 Comfortmaker Keeprite only 1013142 Comfortmaker Keeprite only 1013143 Heil Arcoaire only 1013138 Heil Arcoaire only 1013139 Heil Arcoaire only 1013140 Bracket Door Filler 1014006 1014007 1014008 Door Front Tstar only 1013154 Tstar only 1013155 Tstar only 1013156 Cmaker Keeprite only 1013148 Cmaker Keeprite only 1013149 Cmaker Keeprite only 1013150 Heil Arco only 1013145 Heil Arco only 1013146 Heil Arco only 1013147 Clamp Capacitor 1095020 1095022 Transition Assembly 1012281 1012282 1012283 Gasket Blower 1014425 Board Insulating 1012418 1012419 1012420 Box Collector 1012244 1012245 1012246 Gasket Transition 1013263 1013080 1013083 1013084 Gasket Collector Box 1012594 1012595 1012596 Partition Frt Ht Exchanger 1012650 1012648 1012651 1012653 Denotes Brand 440 01 1114 00 Re
47. Side Mounted Filter Rack 25 20 90 Filter Installation using Optional Filter Rack When installing or removing a bottom mounted filter slide the two side filter clips tothe back of the furnace BEFORE installing or re moving This will allow the filter to clear the front raised edge of the furnace Insertfilter into side clips firstand push filter back until it is fully engagedinto back clip When filteris in place slide clips back into place midway on filter as shown in Figure 35 Bottom Mounted Filter Rack 25 24 18 Slide filter clips towards back before removing Refer to Figure 36 and for guidelines to install filters Furnaces which require larger filter media and have limited clearances on one side of furnace require a standoff filter rack see Figure 36 available from your distributor Standoff Filter Rack Using Optional Standoff Filter Rack 25 21 45a CAUTION If filters are only suitable for heating application advise homeowner that filter size may need to be increased if air conditioning is added Addition Of Air Conditioning When a refrigeration coil is used in conjunction with this unit it must be installed on the discharge side of the unit to avoid con densation on the heat exchanger The coil installation instructions must be consulted for proper coil location and installation proce dures With a parallel flow arrange
48. T ROLLOUT SWITCH 1TO SERIES DEPENDING ON GAS VALVE MODEL BL COPPER CONDUCTORS ONLY B BL Y i w L 1 THERMOSTAT NOTE MOST VOLT METERS WILL READ 13 16 VOLTS TO i FURNACE CONTROL CHASSIS ON BOTH SIDES OF AN OPEN LIMIT OR PRESSURE SWITCH IN THE RECTIFIED AC VOLTAGE CIRCUIT INDUCER SPEED TAP CODE a BLACK HI BLUE MLO REDLO LINE VOLTAGE FACTORY LINE VOLTAGE FIELD LOW VOLTAGE FACTORY oe LOW VOLTAGE FIELD INTERNAL CIRCUIT BOARD WIRING r RECTIFIED AC VOLTAGE FACTORY PRESSURE SWITCH 1 TO2 IN SERIES DEPENDING ON MODEL 4 LP PRESSURE SWITCH 1 LP MODELS ONLY CAPACITOR SOME MODELS COLOR CODE BLACK BK BLUE BL BROWN BR GREEN ORANGE O RED R WHITE YELLOW Y PURPLE SEE MANUALS FOR ADJUSTING SPEED TAPS FOR PROPER HEATING COOLING amp CIRCULATING SPEEDS LADDER DIAGRAM HOT 115V 60HZ NEUTRAL INTERLOCK SWITCH CAPACITOR ll A O sc eco J HUMO amp 4 TRANSFORMER ROLLOUT SWITCH 1 TO3 IN SERIES DEPENDING ON MODEL p mie 39 PRESSURE SWITCH FURNACE 1 TO 2 IN SERIES CONTROL DEPENDING ON MODEL IGNITER LP PRESSURE SWITCH LP MODELS ONLY LM La boTT Lou ui IF
49. VC vent extension pipe to the vent fitting with the clamp This configuration allows left side venting from the furnace If right side ventingis required the combustion blower must be relocated on the plastic transition box Loosen the four 4 screws that se cure the blower to the transition approximately 1 2 Rotate the blower 180 and secure with the four 4 screws Note that some combustion blowers have plastic spacers on the mounting legs of the blower located at the 6 and 12 o clock positions blower snout to the left or right that are required for proper fit up of the blower to the transition Use caution to not over tighten the screws to pre vent stripping out of the plastic mounting holes NOTE For right side venting the vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope See Figure 14 Plug the upper drain stub on the vent fitting with the yellow plastic cap Connectthe PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortenedif an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp For left side mounted co
50. ace 2 If copper tubing is used it MUST comply with limitation set in National Fuel Gas Code or CGA codes 3 Two stage regulation of LP gas is recommended Final Check 1 The furnace and the gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 PSIG Close the manual shut off valve beforetesting at such pressures 2 When installation is complete test all pipe connections for leaks with the gas pressure less than 1 2 PSIG to the gas valve 3 Apply a commercial soap solution to all joints to test for leaks Correct any leaks indicated by bubbles Correct even the smallest leak at once Check for leaks at gas valve and orifice connections to the burner manifold along with the pilot tube connections to the valve and pilot assembly while the furnace is operating 6 Electrical Wiring WARNING ELECTRICAL SHOCK HAZARD Failure to do so can result in death personal inju ry and or property damage Turn OFF electric power at fuse box or service panel before making any electrical connections and ensure a proper ground connection is made before connecting line voltage Power Supply Wiring The furnace MUST be electrically wired and grounded in accor dance with local codes or in the absence of local codes with the latest edition of The National Electric Code ANSI NFPA 70 and or The Canadian Electric Code CSA C22 1 Field wirin
51. ad orrun gas pipe directly from gas meter or LP gas regulator Refer to NFGC and ANSI Z223 1 for proper gas pipe size Install correct pipe size for run length and furnace rating Measure pipe length from gas meter or LP second stage regulator NOTE Referto Figure 29 or Figure 30 for the general layout at the furnace The rules listed apply to natural and LP gas pipe installations NOTE Onthe Dual Certified or Direct Vent models install the gas pipe grommet to the furnace side panel with the gas pipe entry If needed remove the 2 hole plug and relocate to the open hole in the furnace side panel A CAUTION If a flexible connector is required or allowed by authority having jurisdiction black iron pipe shall be installed at gas valve and extended a minimum of 2 outside furnace casing 4 Use black iron or steel pipe and fittings or other pipe ap proved by local code NOTE The use of copper tubing for gas piping is NOT approved by the state of Massachusetts 5 Usegroundjointunions and install a drip leg no less than 3 long to trap dirt and moisture before it can enter gas valve 6 Usetwo pipe wrenches when making connections to pre vent gas valve from turning 7 Install a manual shut off valve external to furnace casing and tighten all joints securely Additional LP Connection Requirements 1 Have a licensed LP gas dealer make all connections at storage tank and check all connections from tank to fur n
52. ation of switch Check with governing authorities Changing Orifices for High Altitude A WARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to properly install orifices can result in death personal injury and or property damage Turn OFF electric power at disconnect and gas supply at manual valve in gas line when installing orifices Installation of orifices requires a qualified service technician NOTE Main burner orifices can be changed for high altitudes 1 Disconnect gas line from gas valve 2 Remove manifold from furnace 3 Remove the orifices from the manifold and replace them with properly sized orifices 4 Tighten orifices so it is seated and gas tight See Figure 28 5 Reinstall manifold Ensure burners do NOT bind on new orifices 440 01 1114 00 Typical Gas Piping for Upflow Drip Leg and Union Union should be outside the cabinet Manual shut off valve MUST be upstream of dripleg union and furnace Manual shut off Use elbows and 3 pipe nipple to connect valve to piping when using right side gas pipe entry LP Low pressure Switch Optional on some models Models may have 1 or 2 pressure Switches 25 23 37 Typical Gas Piping for Downflow Use elbows and 3 pipe nipple to connect valve to piping when using left side gas pipe entry Manual shut off Models may have LP Low pressure vave 1 or 2 pressure switch
53. be within minimum and maximum values listedonrating plate Pressures are usually setby gas sup pliers Manifold Gas Pressure Adjustment NOTE Make adjustment to manifold pressure with burners oper ating A WARNING FIRE OR EXPLOSION HAZARD Failure to turn OFF gas at shut off before connecting manometer can result in death personal injury and or property damage Turn OFF gas at shut off before connecting manometer 1 Remove the burner compartment door 2 With gas OFF connect manometer to tapped opening on gas valve Use manometer with a 0 to 15 water column range 3 Turn gas ON and remove adjustment screw cover on gas valve Turn counterclockwise to decrease pressure and clockwise to increase 4 For altitudes up to 2000 set pressure to value shown in Table 6 0 3 8mm water column For altitudes of 2000 to 8000 see Section 5 for correct pressure setting Adjust Pilot Burner The furnace has a pilot flame to light the main burner The flame should surround 3 g to 1 5 of the flame sensor See Figure 41 To adjust remove cap from pilot adjusting screw on gas valve Turn screw counterclockwise to increase or clockwise to decrease flame as required Replace adjusting screw cap Pilot Burner Proper Flame Adjustment Flame Sensor 336 to 1 Hot Surface Igniter 10 11 65 Main Bu
54. before connecting manometer can result in death personal injury and or property damage Turn OFF gas at shut off before connecting manometer Remove the burner compartment door 2 With gas OFF connect manometer to tapped opening on gas valve Use manometer with a 0 to 15 water column range 3 Turn gas ON and remove adjustment screw cover on gas valve Turn counterclockwise to decrease pressure and clockwise to increase 4 For altitudes up to 2000 set pressure to value shown in Table 6 0 3 water column 5 Connect manometer to the tapped opening on the outlet side of gas valve Use manometer with a 0 15 min water column range 6 Turn gas ON fire the furnace and remove adjustment Screw cover on gas valve 7 Turn counterclockwise to decrease pressure and clock wise to increase 8 Setpressureto value shownin Table 6 Refertolmportant Notes in Table 6 Pressure is also listed on furnace rating plate 9 When pressure is set replace adjustment screw cover on gas valve 10 Replace the burner compartment door 44001 1114 00 MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS NATURAL GAS Elevation Above Sea Level Heat Value Btu Cu Ft 0 1999 wo 2000 2999 wc 3000 3999 Wc 4000 4999 5000 5999 6000 6999 7000 7999 Orifice Size 44 Orifice size for 80 000 BTUH model General Derating Rules 1 For operation with
55. bly in the Y concentric fitting andthe large pipe assembly Ensure that the small diameter pipe is bottomed out and securely cemented in the Y concentric fitting Cement the furnace combustion air and vent pipes to the concentric vent termination assembly See Figure 45 or Figure 49 for proper pipe attachment Operate the furnace through one heat cycle to ensure com bustion air and vent pipes are properly connected to the concentric termination connections 44001 1114 00 Technical Support Manual Four Position Furnace Models Single Pipe N9MP1050B12A4 N9MP1075B12A4 N9MP1080F 16A4 N9MP1100F 14A4 N9MP1100J20A4 N9MP1125J20A4 or Two Pipe N9MP2050B12A4 N9MP2075B12A4 N9MP2080F 16A4 N9MP2100F 14A4 N9MP2100J20A4 9 2125 20 4 or Dual Certified 9MPDO50F 12A4 9MPD075F12A4 9MPDO080J16A4 9MPD100J14A4 9MPD100J20A4 9MPD125L20A4 25 23 30 Denotes Brand Manufactured by International Comfort Products Corporation USA Lewisburg TN USA 37091 Save This Manual For Future Reference 440 01 1114 00 Manufacturers Number Mfr No See Rating Plate ALL Models Specifications N9MP1 N9MP1050B12A N9MP1075B12A N9MP1080F16A N9MP1100F14A N9MP1100J20A N9MP1125J20A General Gas Type Nat LP Nat LP Nat LP Nat LP Nat LP Nat LP Input Btuh 50 000 75 000 80 000 100 000 100 000 125 000 Output Btuh 45 500 68 000 72 000 91 000 96 500 113 750 Transformer Size VA 40 40 40 40
56. duced when fuel is not burned completely or when the Rating Plate on unit Overfiring will result in failure of flame does not receive sufficient oxygen heat exchanger and cause dangerous operation Fur B Therecanbe numerous sources of fire or smoke in a build naces can be converted to L P gas with approved kit Install this furnace only in a location and position as speci fied in nstallation pg 5 of these instructions Provide adequate combustion and ventilation air to the furnace as specified in Combustion and Ventilation Air on pg 8 of these instructions Combustion products must be discharged outdoors Con nectthis furnace to an approved vent system only as spe ing or dwelling Fire or smoke can cause serious bodily inju ry death and or property damage Therefore in order to alert people of potentially dangerous fire or smoke you should have fire and smoke detectors listed by Underwrit ers Laboratories installed and maintained inthe building or dwelling see Note below Note The manufacturer of your furnace does not test any de tectors and makes no representations regarding any brand or type of detector cified in Combustion and Ventilation Air on pg 8 of these C To ensure safe and efficient operation of your unit you instructions should do the the following e Never test for gas leaks with an open flame Use a com 1 Thoroughly read this manual and labels on the unit mercially available soap solutio
57. e 44001 1114 00 Downflow Installations Dual Certified 9MPD A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION LEFT Side Venting DRAIN SIDE VIEW eee lt x Rotate downward 5 to 10 Return Air NOTE Built in channel will be angled 5 to 10 also PVC Vent Extension Pipe Exhaust gt Rotate 180 for Left Side S Optional S Supply Air Single Pressure Switch Connections on all models except 125 RIGHT Side Venting eS Return Air Combustion Air Pipe Optional Yellow Pressure Switch Plastic Cap Hose Transition Plastic Vent Pipe gt Exhaust PVC Vent Extension Pipe Plastic Caps Drain Line Vent Fitting Supply Air amp Clamps dwg 25 24 07 2 Pressure Switch Connection on all 125 models Downflow Installations Dual Certified 9MPD Models See Figure 12 NOTE
58. e clamps position the clamps as shownin Figure 13 Installthe condensate trap hose assemblytothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole in the casing and push the con densate trap into position Secure with the two screws Recon nect the drain hoses to the stubs onthe vent fitting and the plastic transition and secure with the clamps Mount the condensate drain trap in a vertical position to either the left or right side of the furnace using the two screws and gasket that are provided If needed remove the hole plugs from the fur nace side panel and relocate to the open set of holes in the oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps NOTE For left side venting the vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on 44001 1114 00 the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is usedto connectthe PVC vent extension tube to field installed vent pipe Securely at tachthe P
59. e from any air conditioner heat pump swimming pool swimming pool pumping chlorinator or filtration unit A VVARNING CARBON MONOXIDE POISONING HAZARD Failure to properly vent this furnace can result in death personal injury and or property damage 1 Install all couplings nipples and elbows using proper pro cedures for Joining Pipe and Fittings and maintain spac ing between vent and combustion air piping as indicated in Figure 19 through Figure 27 Sidewall Termination 12 or More Above Snow Level or Grade Level 18 Minimum for cold climates substained below 0 F Horizontal Termination 1 Cuttwo holes 21 2 for 2 pipe 3 for 21 2 pipe or 31 2 for 3 pipe Do NOT make the holes oversized orit will be nec essaryto add a sheet metal or plywood plate on the outside with the correct size hole in it 2 Check hole sizes by making sure it is smaller than the cou plings or elbows that will be installed on the outside The couplings or elbows MUST prevent the pipe from being pushed back through the wall 3 Extend vent pipe and combustion air pipe through the wall 3 4 to 1 and seal area between pipe and wall 4 Install the couplings nipple and termination elbows as shown and maintain spacing between vent and combus tion air piping as indicated in Figure 19 and Figure 20 A metal shield is recommended 18 x 18 min or 18 min diame ter around the vent termination at the exterior wall to protect t
60. e supply ducts carry air outside furnace area seal return air duct to furnace casing and terminate duct outside furnace space 2 Install air conditioning cooling coil evaporator on outlet side of furnace Control Center Fuse The 24V circuit contains a 5 amp automotive type fuse located on fan timer board See Figure 32 Any electrical shorts of 24V wiring during installation service or maintenance may cause fuse to blow If fuse replacement is required use only a fuse of identical size 5 amp Fan Timer Connections Switch 25 23 41 3 For furnaces installed without a cooling coil it is recom mended that the outlet duct be provided with a removable access panel This panel should be accessible when the furnace is installed so the exterior of the heat exchanger can be viewed for inspections The access panel MUST be sealed to prevent leaks 4 f separate evaporator and blower units are used install good sealing dampers for air flow control Chilled air going throughthe furnace could cause condensation and shorten the furnace life NOTE Dampers field supplied can be either automatic or manual Manually operated dampers MUST be equipped with a means to prevent furnace or air conditioning operation unless damper is in the full heat or cool position 44001 1114 00 A WARNING CARBON MONOXIDE POISONING HAZARD This could result in death personal injury and or property damage Co
61. ed as count recirulation of the flue gases may occur Water may also 2 If more than four elbows are required reduce the length of collect inside the larger combustion air pipe and flow to both the inlet and the exhaust pipes five feet for each the burner enclosure additional elbow used 3 Elbows are DWV long radius type for 2 and 3 vents Install the Y concentric fitting and the pipe assembly NOTE Feet of pipe is whichever pipe run is the longest either through the structure s hole For vertical termination install inlet or outlet side the parts through the field supplied roof boot flashing NOTE Do not allow insulation or other materials to accu mulate inside the pipe assembly when installing through the structure s hole If assembly needs to be extended to meet height or side wall thickness requirement the two pipes supplied in the kit may be replaced by using the same diameter solid single no coupling connections field supplied SDR 26 PVC ASTM D2241 pipes 7 Secure the assembly to the structure as shown in Do not extend dimension D more than 60 See Figure 46 Figure 45 or Figure 49 using field supplied metal strap Do not use field supplied couplings to extend the pipes ping or equivalent material Airflow restriction will occur and the furnace pressure NOTE Ensure the termination height is above the roof sur switch may cause intermittent operation face or anticipated snow level as shown in Figure 45 for
62. ed for proper com bustion and ventilation of flue gases Frozen Water Pipe Hazard A WARNING FROZEN AND BURST WATER PIPE HAZARD Furnace may shut down Do not leave your home unattended for long periods during freezing weather without turning off water supply and draining water pipes or otherwise protecting against the risk of frozen pipes Failure to do so may result in burst water pipes serious property damage and or personal injury Seal around supply and return air ducts Your furnace is designed solely to provide a safe and comfortable living environment The furnace is NOT designed to ensure that water pipes will not freeze It is equipped with several safety de vices that are designed to turn the furnace off and prevent it from restarting in the event of various potentially unsafe conditions e Install correct filter type and size Unit MUST be installed so electrical components are pro tected from direct contact with water 44001 1114 00 If your furnace remains off for an extended time the pipes in your home could freeze and burst resulting in serious water damage Water may create a condition in which mold can grow in your home Certain types of mold have been reported to cause respi ratory problems or other serious health risks Remedial actions including immediately drying all wet items should be taken quick ly to help prevent the development of mold in your home If the structure will be unatte
63. ed horizontally in an attic basement crawl space alcove or suspended froma ceiling ina basement or utility room See Figure 4 Do not install furnace onits back or in the reverse airflow positions as safety control operation will be ad versely affected Typical Horizontal Installation Inlet Pipe not used on Single Pipe model 25 23 34 NOTE 6 bottom clearance required for condensate trap 3 Combustion amp Ventilation Air For Single Pipe Installation A WARNING CARBON MONOXIDE POISONING HAZARD Failure to provide adequate combustion and ventilation air can result in death and or personal injury Use methods described here to provide combustion and ventilation air Furnaces require ventilation openings to provide sufficient air for proper combustion and ventilation of flue gases All duct or open ings for supplying combustion and ventilation air must comply with National Fuel Gas Code NFPA54 ANSI Z223 1 2001 or current edition and applicable provisions of local building codes This furnace can NOT be common vented or connected to any type B BW or L vent or vent connector nor to any portion of a fac tory built or masonry chimney If this furnace is replacing a pre viously common vented furnace it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the other remaining appliance s See Venting and Combustion Air Check in this section This furnace MUST be ve
64. eed for a 30 second postpurge period Timed from the gas valve de energizing the Heat fan speed de energizes after the selected Heat Fan Delay time expires Heating Request with Gas Supply Line Shut Off 24 VAC signals applied to W terminal of EFT control Inducer motor turns on The gas valve solenoid energizes Following a 3 second prepurge delay the pilot valve opens and the ignitor begins to warm up The ignitor glows red hot for 30 seconds then turns off The igniter stays off for 25 seconds then begins to warm up again The igniter glows red hot for 30 seconds then turns off The pilot valve closes 3 seconds after the igniter de energizes The inducer de energizes 5 seconds after the pilot valve closes The SmartValve proceeds to soft lockout and flashes error code 6 The control exits soft lockout after 5 minutes and begins another ignition sequence Gas Valve Diagnostic Codes See Figure 43 OFF Control not powered Heartbeat Normal Operation Standby or call for heat 1 Flash Notused 2 Flashes Pressure switch closed when should be open 3 Flashes Pressure switch circuit was still sensed as open 30 seconds after the inducer was energized System is in 5 minute delay mode with inducer off After 5 minute delay a new ignition sequence will be initiated Note SV9541M On Off switch in off position during a call for heat will generate this diagnostic code 4 Flashes Limit switch string open 5 F
65. eeze the hose together near the end and quickly reconnect the 3 4 OD rubber hose to the stub on the condensate trap Secure with the hose clamp When you return home your furnace will be ready to start as it is not necessary to drain the antifreeze from the furnace Do NOT operate furnace in a corrosive atmosphere containing chlorine fluorine or any other damaging chemicals Refer to Combustion amp Ventilation Air section Contaminated Combustion Air Typical Upflow Installation Aluminum or non rusting shield recommended See Vent Termination Shielding for dimensions 8 Min 4 20 Max in same atmospheric zone REL Coupling on ends of exhaust pipe Total pipe amp coupling out side structure 8 Inlet Pipe _ _ not used on Single Pipe model E M f 3 Min Vent Pipes MUST be supported 20 Max Horizontally and in Same atmospheric Vertically zone DISCHARGE AIR Increase minimum from 8 to 18 for cold climates sustained temperatures below 0 F 25 23 33 Typical Downflow Installation See Vent Termination Shielding in Vent Section Coupling on inside and outside of wall to restrain vent pipe 07 L 78 Min Inlet Pipe co 20 Max not used on in same Single Pipe atmospheric zone model Me Ven
66. eing placed into operation while all other appliances connected to the venting system are not in operation 1 Seal any unused openings in the venting system 2 Inspect the venting system for proper size and horizontal pitch as required in the National Fuel Gas Code 5 2223 1 54 or CSA B149 1 Natural Gas and Pro pane Installation Codes and these instructions Deter mine that there is no blockage or restriction leakage cor rosion and other de to ensure there is no blockage or re striction leakage corrosion and other deficiencies which could cause an unsafe condition As far as practical close all building doors and windows and all doors between the space in which the appliance s connected to the venting system are located and other spaces of the building Close fireplace dampers Turn on clothes dryers and any appliance not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan Follow the lightinginstructions Place the appliance being inspected into operation Adjust thermostat so appliance is operate continuously Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5 minutes of main burner operation Use the flame of a match or candle Figure 6 8 If improper venting is observed during any of the above tests the venting system m
67. elbow facing out Connect a 11 section of 2 PVC pipe field supplied to the 90 elbow using the rubber cou pling and clammps The PVC pipe will extend through the top pan el about 11 2 Connect the vent fitting to the end ofthe 11 section of PVC pipe using the clamp NOTE The 90 elbow is approved for use inside the furnace ONLY NOTE The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Plug the upper drain stub on the vent fitting with the yellow plastic cap Connectthe PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is usedto connect the 440 01 1114 00 PVC vent extension tube to field installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp Connect the 5 g OD rubber hose with the 90 bend to the lower drain stub on the vent fitting and secure with a 5 g clamp Route the hose to the horizontal drain stub on the condensate trap Cut off excess hoses and discard Connect the hose to the drain stub on the condensate trap and secure with a 5 g clamp Connect the 3 OD rubber hose with the 90 bend to the large drain stub on the condensate
68. et Air 1 4 Inlet Furnace Soffit Vent Air Of ia Minimum One Inlet and One Outlet Air Supply is Required May be in any Combination Shown Inlet Air Opening Must be Within12 of floor Outlet Air Opening Must be Within12 of ceiling 1 1 Square Inch per 4000 BTUH 2 1 Square Inch per 2000 BTUH Unconfined Space Installation A WARNING CARBON MONOXIDE POISONING HAZARD Failure to supply additional air by means of ventilation grilles or ducts could result in death and or personal injury An unconfined space or homes with tight construction may not have adequate air infiltration for proper combustion and ventilation of flue gases Most homes will require additional air An unconfined space is defined as an area having a minimum vol ume of 50 cubic feet per 1 000 Btuh total input rating for all gas appliances in area Refer to Table 2 for minimum area required _ Unconfined Space Minimum Area in Square Feet Minimum Area in Square Feet ating 50000 map 8 31 114 000 71 755 000 EXAMPLE NOTE Square feet is based on 8 foot ceilings 28 000 BTUH X 50 Cubic Ft 1 000 1 400 8 Ceiling Height 175 Sq Ft NOTE Refer to definitions in section titled Unusually Tight Construction f any one of the conditions apply the space MUST be considered confined space regardless of size 1 Adjoining rooms can be considered part of an unconfined area if there are openings with
69. etermine terminationlocations based on clearances spe cified in following steps and as shown in Figure 7 Figure 19 through Figure 27 For Concentric Termination Kit clearances see Figure 45 Figure 46 Figure 47 Figure 48 and Figure 49 in Section 10 in this manual 2 The vent termination must be located at least 12 above ground or normally expected snow accumulation levels 440 01 1114 00 3 Do NOT terminate over public walkways Avoid areas where condensate may cause problems such as above planters patios or adjacent to windows where steam may cause fogging 4 Theventtermination shall belocated atleast 4 horizontally from any electric meter gas meter regulator and any relief equipment These distances apply ONLY to U S installa tions 5 Theventtermination is to be located at least 3 above any forced air inlet located within 10 and at least 10 from a combustion air intake of another appliance except another direct vent furnace intake 6 In Canada the Canadian Fuel Gas Code takes prece dence over the preceding termination instructions Vent Termination Clearances United States Only In Canada See Canadian Fuel Gas Code Other Than Direct Vent Terminal Direct Vent Terminal 50 000 Btuh orless Than Direct Vent Forced Air Terminal Inlet Direct Vent Terminal More Than 50 000 Btuh 77176 Condensate Drain Trap This furnace removes both sensible and latent heat from the prod
70. g Field 2 Support Field Supplied 45 Elbow Field Supplied Combustion 25 22 02 Support must be field installed to secure termination kit to structure 44001 1114 00 Concentric Vent Dimensional Drawing BPVC Vent Exhaust VC Intake Combustion Air 25 22 03 Exc e Dimension will change accordingly as dimension D is lengthened or shortened Dimension D may be lengthened to 60 may also be shortened by cutting the pipes provided in the kit to 12 minimum Concentric Termination Kit amp NAHAO02CV Venting Table for Models 50 000 75 000 amp 80 000 Btuh Furnaces NAHAOO2CV 35 amp 4 90 elbows with 2 PVC pipe or NAHAOO1CV 65 amp 4 90 elbows with 3 PVC pipe 100 000 Btuh Furnace NAHAOO01CV 35 amp 4 90 elbows with 3 PVC pipe or 01 65 amp 4 90 elbows with 3 PVC pipe amp Long Vent Kit See Tech Manual 125 000 Btuh Furnace NAHAOO1CV 35 amp 4 90 elbows with 3 PVC pipe Do not include the field supplied 45 elbow in the total elbow count If more than four elbows are required reduce the length of both the inlet and the exhaust pipes five feet for each additional elbow used Elbows are DWV long radius type for 2 and 3 vents NOTE Feet of pipe
71. g connections must be made inside the furnace con nection box A suitable strain relief should be used at the point the wires exit the furnace casing Copper conductors must be used Line voltage wires should be sized forthe input amps stated onthe rating plate Furnace should be connected to its own separate circuit Thermostat Thermostat location has an important effect on the operation of the unit Follow instructions included with thermostat for correct mounting and wiring Low voltage connections to furnace must be made on terminal board to fan control 440 01 1114 00 Set thermostat heat anticipator in accordance with the Technical Support Manual Optional Equipment All wiring from furnace to optional equipment MUST conform to local codes or inthe absence of local codes with the latest edition of The National Electric Code ANSI NFPA 70 and or The Cana dian Electric Code CSA C22 1 Install wiring in accordance with manufacturer s instructions The wiring MUST have a minimum temperature rating of 105 C Humidifier Electronic Air Cleaner The furnace is wired for humidifier and or electronic air cleaner connection CAUTION Do NOT exceed 115V 0 8 amp maximum current load for both the EAC terminal and the HUM terminal combined NOTE The humidifier will be powered when the furnace is fired andthe circulating air blower comes on The electronic air cleaner will be powered anytime the air circulating blower is energi
72. hamfer end of pipe then clean fitting socket and pipe joint of all dirt grease or moisture 44001 1114 00 NOTE Stirthe solvent cement frequently while using Use a natu ralbristle brush orthe dauber supplied with the cement The prop er brush size is one inch 2 After checking pipe and socket for proper fit wipe socket and pipe with cleaner primer Apply a liberal coat of primer to inside surface of socket and outside of pipe Do NOT al low primer to dry before applying cement 3 Apply a thin coat of cement evenly in the socket Quickly apply a heavy coat of cement to the pipe end and insert pipe into fittings with a slight twisting movement until it bot toms out NOTE Cement MUST be fluid while inserting pipe If NOT recoat pipe 4 Hold the pipe in the fitting for 30 seconds to prevent the ta pered socket from pushing the pipe out of the fitting 5 Wipe all excess cement from the joint with a rag Allow 15 minutes before handling Cure time varies according to fit temperature and humidity Connecting Vent Pipes and Termination NOTE Combustion air intake and vent MUST terminate in the same atmospheric pressure zone If installation is in a cold cli mate sustained temperatures below 0 F increase the minimum distance between vent pipe and air intake from 8 to 18 CAUTION Maintain a minimum of 36 between combustion air inlet and clothes dryer vent Terminate the combustion air intake as far as possibl
73. he house exterior materials from flue product or condensation freez ing damage Using Exterior Risers 1 Install elbows and pipeto formriser as shownin Figure 20 2 Securevent pipe to wall with galvanized strap or other rust resistant material to restrain pipe from moving 3 Insulate pipe with Armaflex or equivalent moisture resis tant closed cell foam insulation or Fiberglass insulation if boxed in and sealed against moisture Sidewall Termination with Exterior Risers to Get Above Snow Level or Grade Level 718 Minimum for cold climates substained below 0 F GRADE LEVEL SNOW LEVEL Vertical Termination 1 Figure 21 shows the proper installation and clearances for vertical vent termination The vertical roof termination should be sealed with a plumbing roof boot or equivalent flashing The inlet of the intake pipe and end of the exhaust vent must be terminated no less than 12 above the roof or snow accumulation level and 12 away froma vertical wall or other protrusion 2 Ifthe vent system is installed an existing chimney make sure clearances shown in Figure 21 are maintained Hori zontal section before the termination elbow can be ex tended on the inlet air to provide necessary clearance Rooftop Termination GC 51 pees CERA 2122 y 2x gt gt 2 SN 12 Above roof or snow accumulation level B 8 Min 20 Maximum except in areas with extreme cold temperatures sus
74. heating and cool ing remove the undesired motor speed lead from the Heat or Cool terminal and connectthatleadto the open terminal at Unused Motor Lead location Attach a jump er between the Heat and Cool terminals and the re maining motor speed lead Note For motors with 4 speed leads it will be necessary to tape off the terminal of the motor speed lead removed from the Heat or Cool terminal with electrical tape since an open terminal will not be available at the Unused Mo tor Lead location Continuous Fan Operation Aterminal is provided on the electronic fan control located in the circulating blower compartment for operation of the continuous fan option This connection is intended for the low speed motor tap and has a lower contact rating 8 amps than the heat and cool taps When the low speed blower lead is connected to this terminal this will provide low speed blower operation whenever the other two speeds Heat or Cool are not energized Thoroughly check the system after modification to ensure the properoperation ofthe circulating air blowerin all modes of opera tion Separate speed selections for Heat Cool and Continuous Fan Connect low speed lead from circulating motor to the Cont ter minal at the electronic fan control The appropriate motor leads should already be connected to the Heat and Cool terminals Heating and Continuous Blower Speed the Same If it is necessary to operate the
75. heating speed and continuous blower speed using the same blower speed connect a jumper be tweenthe Heat and Cont terminals onthe electronic fan con trol Note There should be only ONE motor lead going to the Heat and Cont terminals See User s Information Manual and the Service Manual 10 Sequence of Operation amp Diagnostics The following is the normal operating sequence for the control system Cooling Y Request 24 VAC signals applied to Y amp G terminals of EFT electronic fan timer control Cool motor speed energized after 6 second Cool Fan On Delay time Y amp G signals removed from EFT Cool motor speed de energized after 60 second Cool Fan Off Delay time Circulating Fan G Request 24 VAC signals applied to G terminals of EFT control Heat motor speed energized without delay G signal removed from EFT Heat motor speed de energized without delay Heating W Request 24 VAC signals applied to W terminal of EFT control Inducer motor turns on The gas valve solenoid energizes Following a 3 second prepurge delay the pilot valve opens and the ignitor begins to warm up After the pilot lights the main burners energize and light Timed from the opening of the main gas valve the control will delay 30 seconds before switching the fan to Heat speed W signal removed from EFT The gas valve de energizes and the main burners go out The inducer runs at its present sp
76. inch of free area per 2 000 BTUH of combined input for all gas appliances in area see Table 1 6 Vertical duct openings or openings directly to outside re quire 1 square inch of free area per 4 000 BTUH for com bined input of all gas appliances in area see Table 1 Free Area Minimum Free Area Required for Each Opening Horizontal Duct Vertical Duct or openings Round Duct 2 000 BTUH to outside 4 000 BTUH 4 000 BTUH 75 000 31 5 sq in 18 75 sq in S 9 125 000 Wis 3mm _ EXAMPLE Determining Free Area Appliance 1 Appliance 2 100 000 30 000 130 000 4 000 32 5 Sq In Vertical Appliance 1 Appliance 2 100 000 30 000 130 000 2 000 65 Sq In Horizontal Total Input Total Input One permanent opening commencing within 12 of thetop ofthe enclosure shall be permitted where the equipment has clear ances of at least 1 from the sides and back and 6 from the front ofthe appliance The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces crawl or attic that freely communi cate with the outdoors and shall have a minimum free area of 154 per 3000 Btu per hr of the total input rating of all equipment located in the enclosure and Notless than the sum of the areas of all vent connectors in the confined space 440 01 1114 00 Gable Vent Outl
77. installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp Remove the pressure switch hose from the upper stub on the plastic transition box Relocate the plastic caps on the stubs ofthe plastic transition box fromthe lower stubs to the upper stubs and secure tightly with the clamps Route the pressure switch hose to the lower stub on the plastic transition box Cut off excess hose and discard Connectthe pres sure switch hose to the lower stub on the plastic transition box NOTE Failure to correctly install the pressure switch hose to the transition box can adversely affect the safety control operation Connect the 3 4 OD rubber hose with the 90 bend to the drain stub on the bottom of the plastic transition box and secure with a 3 4 clamp Route the hose to the large drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the transition and secure with a 3 4 clamp Connect the 5 5 OD rubber hose with the 90 bend to the lower drain stub on the vent fitting and secure with a 5 g clamp Route the hose to the smaller stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with 5 g clamp For left side or right side mounted condensate trap the pres sure tap on the condensate trap MUST be connected to the un used pressure tap located on the top of the plastic transition
78. is whichever pipe run is the longest either inlet or outlet side Concentric Termination Kit yN WV ARNINIG NAHAO01CV amp NAHAOO2CV Venting Table for N9MP2 Models CARBON MONOXIDE POISONING HAZARD 50 000 amp 80 000 Btuh Furnaces Failure to follow this warning could result in death NAHAO02CV 35 amp 4 90 elbows with 2 PVC pipe or personal injury and or property damage NAHAOO1CV 65 amp 4 90 elb ith 3 PVC pi 3 sito Pipe When using the alternate screw assembly method drill a 75 000 Btuh Furnaces clearance hole in the rain cap and a pilot hole in the vent 02 20 amp 2 90 elbows with 2 PVC pipe or pipe for the screw size being used Failure to drill NAHAO02CV 35 amp 4 90 elbows with 2 PVC pipe amp adequate holes may cause cracking of the PVC Long Vent Kit See Tech Manual or components allowing flue gases to be recirculated 001 65 amp 4 90 elbows with 3 PVC pipe NAHAOO1CV 35 amp 4 90 elbows with 3 PVC pipe or WV ARNING 65 amp 4 90 elbows with 3 PVC pipe amp Long Vent Kit See Tech Manual CARBON MONOXIDE POISONING HAZARD 125 000 Btuh Furnace Failure to follow this warning could result in death NAHAOO1CV 35 amp 4 90 elbows with 3 PVC pipe personal injury and or property damage 1 Do not include the field supplied 45 elbow in the total elbow Do not operate the furnace with the rain cap remov
79. ished living space A field fab ricated auxiliary drain pan with drain pipe is required to prevent damage by overflow due to blocked condensate drain 2 Connect ducts or openings directly to outside 3 When screens are used to cover openings they MUST be no less than 1 4 mesh 4 The minimum dimension of rectangular air ducts MUST NOT be less than 3 5 Whensizing grille or louver use the free area of opening If free area is NOT stamped or marked on grill or louver as sume a 20 free area for wood and 60 for metal Confined Space Installation NOTE A confined space is defined as an area with less than 50 cubic feet per 1 000 BTUH input rating for all gas appliances installed in the area Requirements 1 Provide confined space with sufficient air for proper com bustion and ventilation of flue gases using horizontal or ver tical ducts or openings 2 Figure 5 illustrate how to provide combustion and ventila tion air minimum of two permanent openings one inlet and one outlet are required 3 One opening MUST be within 12 of the floor and the se cond opening within 12 of the ceiling 44001 1114 00 Outside Air This is ONLY a guide Subject to codes of country having jurisdiction This installation NOT approved in Canada Gable n alternate Inlet Air 1 Ventilated Crawl S alternate Inlet Air 1 4 Size openings and ducts per Table 1 5 Horizontal duct openings require 1 square
80. ith no kinking or binding for proper condensate drainage Downflow Installations Single Pipe N9MP91 amp Direct Vent N9MP2 A4 Models LEFT Side Ventin Vent Fitting amp Clamps Return Air PVC Vent Extension Pipe Combustion Blower p Plastic Rotate 180 Cap k switches gu Pressure Switch Hose Transition x Plastic Caps Condensate Trap amp Gasket A Drain Line Supply Air 5 8 Hose amp Clamps Medel shown have two pressure RIGHT Side Venting ae Return Air Air Intake Coupling Combustion Air Pipe rd NoMP2 ONLY Vent Pipe c Exhaust PVC Vent A Extension Ls Pipe Vent Fitting amp Clamps Yellow Plastic Cap 2 Pressure Switch Connection on all 125 models NOTE Built in channel will Single Pressure Switch he angled 5 to 10 also Connections on all models except 125 dwg 25 24 04 NOTE TRAP MUST BE PRIMED BEFORE OPERATION Downflow Installations Single Pipe amp Direct Vent N9MP1 amp N9MP2
81. ke coupling as the template The air intake coupling is sized for 2 PVC pipe Install the combustion air pipe to the airintake coupling using RTV sealant to provide for future serviceability Vent Pipe Connection Install the vent pipe grommet to the furnace panel Locate the grommet in the furnace panel at a location directly away from the vent fitting onthe combustion blower The grommet snaps intothe 3 hole plug from the furnace panel NOTE Depending on the installation position the vent pipe grommet will be installed to the top panel or to the alternate location onthe side panels If needed remove the 3 hole plug from the furnace panel and relocate to the open hole in the furnace panel See Figure 12 or Figure 17 Install the vent pipe to the rubber coupling the vent fitting or the PVC vent extension pipe Securely attach using the clamp or PVC cement as required Note The vent fitting MUST be installed with the air flow marking arrow pointed toward the vent pipe See Figure 18 Some installations require the vent fitting to be installed with a 5 to 10 downward slope See Figures 8 17 440 01 1114 00 Proper Sealing Procedure for Combustion Blower Vent Pipe Top Panel Exit NOTE The 90 elbow is ap proved for use inside the furnace ONLY Rubber Coupling Vent Fitting m amp Clamps Combustion Vent Extension Pipe Side Panel Exit DRAIN SIDE VIEW m Rotate downward ma 5 to 10
82. lashes Flame sensed out of sequence Flame signal still present 6 Flashes 1 Note 1 Soft Lockout Maximum retry count exceeded failed to light within 4 trials for ignition 6 Flashes 2 Notes 1 2 Soft Lockout Maximum recycle count exceeded Last failure was Flame Sense Lost During Run 6 Flashes 3 Notes 1 2 Soft Lockout Maximum recycle count exceeded Last failure was Airflow Proving Circuit Opened During Run 6 Flashes 4 Notes 1 2 Soft Lockout Maximum recycle count exceeded Last failure was Limit Circuit Opened During Run 7 Flashes Soft Lockout Due to Limit Trips Taking Longer than 2 minutes to Reset Auto Reset After 1 Hour if Call for Heat Still Present Reset by Cycling Call for Heat at Any Time NOTE 1 The6 X designationindicates a combination of flash codes 6 flashes shows the control is in soft lockout followed by X flashes 44001 1114 00 to indicate the reason the control went into soft lockout When the 6 X code is flashing the SV9541 will attempt a new ignition sequence after a five minute delay period if the call for heatis still present Reset of the thermostat will initiate a new ignition sequence immediately NOTE 2 Any combination of 5 abnormal events during a single call for heat will result in soft lockout An abnormal event is a Flame Sense Failure During Run Airflow Proving Circuit Open During Run or Limit Circuit Open During Run The flash code will indicate which was the last abnor
83. ldings Buildings with indoor pools Furnaces installed in laundry rooms Furnaces installed in hobby or craft rooms Furnaces installed near chemical storage areas Permanent wave solutions for hair e Chlorinated waxes and cleaners Chlorine based swimming pool chemicals Water softening chemicals De icing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solvents such as perchloroethylene Printing inks paint removers varnishes etc Hydrochloric acid e Sulfuric Acid Solvent cements and glues e ntistatic fabric softeners for clothes dryers Masonry acid washing materials Vent and Combustion Air Piping Guidelines This furnace is approved for venting with Schedule 40 PVC CPVC ABS Cellular Core pipe fittings and SDR 26 PVC NOTE All PVC CPVC ABS and Cellular Core pipe fittings sol vent cement primers and procedures MUST conform to Ameri can National Standard Institute and American Society for Testing and Materials ANSI ASTM standards Pipe and Fittings ASTM D1785 02241 02466 02661 D2665 F 891 F 628 e PVC Primer and Solvent Cement ASTM D2564 Procedure for Cementing Joints Ref ASTM 02855 NOTE All vent piping MUST be installed in compliance with local codes or ordinances these instructions good trade practices and codes of country having jurisdiction 1 Determine the best routing and termination for the vent pi
84. mal event that put the system into the soft lockout state based on the table above Typical Gas Valve Honeywell Pilot Pressure Adjustment Hidden On Off Manifold Pressure Adjustment Diagnostic Light dwg 25 23 31a 440 01 1114 00 HONEYWELL SV9541M SMART VALVE Sequence of Operation POWER APPLIED TO APPLIANCE THERMOSTAT CALLS FOR HEAT PRESSURE SWITCHES PROVED OPEN WAIT FOR PRESSURE SWITCHES TO OPEN COMBUSTION BLOWER ENERGIZED PRESSURE SWITCHES CLOSED WITHIN 30 SEC COMBUSTION BLOWER DE ENERGIZED ONDS FIVE MINUTE WAIT PERIOD 3 SECOND PRE PURGE PILOT VALVE OPENS IGNITOR POWERED 1 THREE SECOND FLAME FAILURE RECYCLE DELAY PILOT LIGHTS AND FLAME IS SENSED NO PILOT VALVE CLOSES DURING 90 SECOND TRAIL FOR PILOT IGNITOR OFF IGNITION YES MAIN VALVE OPENS HEATING FAN ON DELAY BEGINS AFTER DELAY CIRCULATING BLOWER STARTS CIRCULATING BLOWER OFF AFTER DELAY COMBUSTION AIR BLOWER OFF AFTER POST 0 PURGE FLAME SENSE LOST THERMOSTAT CALL FOR HEAT ENDS PILOT AND MAIN VALVE CLOSE FLAME SENSE LOST MORE THAN FIVE TIMES IN THIS CALL FOR HEAT PILOT AND MAIN VALVE CLOSE 1 Ignitor ON for first 30 seconds of trial for ignition then OFF for next 30 seconds If the pilot has not lit it turns back ON for the final 30 seconds The pilot valve remains energi
85. me OFF Setting Dealer Comments Business Card Here Manual Gas Shut Off Upstream of Furnace Drip Leg YES 1 NO 1 Condensate Drain Connected YES d Condensate Drain Trapped YES 4 LJ Transition Pressure switch hose relocated for U D H Application YES No LJ Blower Speed Checked YES NO All Electrical Connections Tight YES d NO E Gas Vave OK YES 1 Measured Line Pressure When Firing Unit Calculated Firing Rate See Checks and Adjustments Sec tion Temperature Rise supply return temperature F Measured Manifold Gas Pressure Static Pressure Ducts Supply Air Return Date of Start Up CO 2 440 01 1114 00 1 Safe Installation Requirements NOTE It is the personal responsibility and obligation of the end userto contact a qualified installer to ensure that the installation is adequate and conforms to governing codes and ordinances Safety Rules Your unit is built to provide many years of safe and dependable service provided it is properly installed and maintained However abuse and or improper use can shorten the life of the unit and create hazards for you the owner WARNING Installation or repairs made by unqualified persons can result in hazards to you and others Installation MUST conform with local codes or in the absence of local codes with codes of all governmental authorities having jurisdiction The information contained in this ma
86. ment dampers must be installed to prevent chilled air from entering the furnace If manu ally operated dampers are used they must be equipped with a means to prevent operation of either unit unless the damper is in full heat or full cool position A 3 clearance is required on the right side of the furnace in order to run the condensate drain line Copper iron or plastic tubing may be used for the condensate drain line Downflow Furnace Installation Non Combustible Floor Installation Fabricate a plenumto the dimensions given in Table 8 for the fur nace outlet Plenum should be flanged approximately 3 4 for support Note The three 3 screws in the top panel of the furnace next to the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation 1 Position plenum through the floor and set the furnace over the openinginthe floor If necessary grout around the base to seal air leaks between the base and the floor Combustible Floor Installation A WARNING FIRE HAZARD Failure to install unit on noncombustible subbase can result in death personal injury and or property damage Place furnace on noncombustible subbase on downflow applications unless installing on non com bustible flooring Subbase for Combustible Floor NOTE The three 3 screws inthe top panel of the furnace next to the duct flange MUST be removedto provide serviceability of the primary heat e
87. mps as shown in Figure 10 Install the condensate trap hose assem bly to the furnace casing Hook one side of the clamp ears onthe drain stub through the hole in the casing and push the condensate trap into position Secure with the two screws Reconnect the drain hoses to the stubs on the vent fitting and the plastic transi tion and secure with the clamps Relocate the plastic cap and clamp from the vertical transition drain stub to the horizontal transition drain stub on the conden sate drain trap Secure the clamps tightly to prevent condensate leakage Do not change the cap and clamp on the vent drain stub Mount the condensate drain trap in a vertical position to the left side of the furnace using the two screws and gasket that are pro vided Note The condensate trap will be located under the fur nace in a vertical position when the furnace is placed horizontally onthe left side If needed remove the hole plugs from the furnace side panel and relocate to the open set of holes in the opposite side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Remove the 90 elbow and ventfitting from the combustion blow er by loosening the clamps on the vent fitting Connect the 90 el bow to the combustion blower using the rubber coupling and clamps Note for proper alignment of the vent pipe through the fur nace the 90 elbow must be installed with the HORIZONTAL lettering on the 90
88. n and secure with a 3 4 clamp Connect the 5 8 OD rubber hose with the 90 bend to the right drain stub on the vent fitting and secure with a 5 clamp Route the hose to the smaller drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the vent fitting and secure with a 5 clamp NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainage Horizontal Right Installations Single Pipe amp Direct Vent N9MP1 amp N9MP2 A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION Vent Pipe SENI Plastic Cap Vent Fitting amp Clamps Combustion Air Pipe Exhaust gt ONLY 5 6 Hose amp Clamps Models shown have two pressure switches dwg 25 23 59a Horizontal Trap Connection Plastic 9 Y Clamp ears Cap Pointed OUT Condensate Trap amp Gasket Preassemble and insert into furnace Pressure Switch Transition Pressure Switch Hose Transition 3 4 Hose amp Clamps Pressure Switch Blower Drain Line Single Pressure Switch Connections on all models except 125 Horizontal Right Installations Single Pipe amp Direct Vent N9MP1 amp N9MP2 Models See Figu
89. n made specifically for the This will help you understand how your unit operates and detection of leaks to check all connections as specified in the hazards involved with gas and electricity Gas Supply and Piping on pg 32 of these instructions 2 Donotuse this unit if any part has been under water Always install furnace to operate within the furnace s in Immediatelyccall a qualified HO nS peer tended temperature rise range with a duct system which the unit and to replace any part of the control system and has an external static pressure within the allowable rat any COntrobwimenihas Been underwater ings as specified in Technical Support Specifications 3 Never obstruct the vent grilles or any ducts that pro pgs 49 51 of these instructions When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space con taining the furnace the return air shall also be handled by duct s sealed to the furnace casing and terminating out side the space containing the furnace A gas fired furnace for installation in a residential garage must be installed as specified in nstallation Require ments pg 7 of these instructions This furnace is not to be used for temporary heating of buildings or structures under construction This furnace is NOT approved for installation in mo bile homes trailers or recreation vehicles vide air to the unit Air must be provid
90. nd connect the 5 45 OD rubber hose See Figure 17 NOTE Route hoses to the condensate trap with no kinking or binding for proper condensate drainage Connecting Vent and Combustion Air Piping A WARNING CARBON MONOXIDE POISONING HAZARD Failure to properly seal vent piping can result in death personal injury and or property damage Cement or mechanically seal all joints fittings etc to prevent leakage of flue gases Refer to the Figure 8 through Figure 17 that corresponds to the installation position of the furnace for the application Preassemble the vent and combustion air piping from the furnace tothe venttermination Do not cement the pipe joints until the pipe preassembly process is complete Combustion Air Pipe Connection Dual Certified or Direct Vent Install the air intake coupling and gasket to the furnace with the four 4 screws Note The air intake coupling and gasket can be installed to the top panel to the alternate air intake locations on either the left or right side panels of the furnace For downflow installation the air intake coupling and gasket must be installed to the alternate air intake location on either the left or right side panels Remove the 3 hole plug from the side panel and relocate to the air intake hole in the top panel Use four screws to seal the four 4 mounting holes in the top panel next to the hole plug Drill four 4 7 64 diameter holes in the casing using the air inta
91. nded during cold weather you should take these precautions 1 Turnoffthe water supply to the structure and drain the wa ter lines if possible and add an antifreeze for potable water to drain traps and toilet tanks Open faucets in appropriate areas O0 2 Have someone check the structure frequently during cold weather to make sure it is warm enough to prevent pipes from freezing Instruct them on a service agency to call to provide service if required 0 2 Installation A WARNING CARBON MONOXIDE POISONING HAZARD Failure to properly vent this furnace or other appliances can result in death personal injury and or property damage This furnace canNOT be common vented or connected to any type B BW or L vent or vent connector nor to any portion of a factory built or masonry chimney If this furnace is replacing a previously common vented furnace it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the other remaining appliance s See Venting and Combustion Air Check in Gas Vent Installation section This furnace MUST be vented to the outside Location and Clearances 4 Referto Figure 1 or Figure 2 for typicalinstallation and ba sic connecting parts required Refer to Figure 4 for typical horizontal direct vent installation and basic connecting parts required Supply and return air plenums and duct are also required 5 If furnace is a replacement it is usually best to i
92. ndensate trap connect the 3 4 OD rub ber hose with the 90 bend to the large drain stub on the conden sate trap and secure with a 3 4 clamp Route the hose to the drain stub on the bottom of the plastic transi tion box Cut off excess hose and discard Connect the hose tothe drain stub on the transition and secure with a 3 4 clamp RIGHT Side Venting Supply Air Models shown have two pressure switch Combustion Blower Rotate 180 for Right Side For right side mounted condensate trap connect the 3 4 OD rub ber hose with the 90 bend to the bottom of the plastic transition box and secure with a 3 4 clamp Route the hose to the large drain stub on the condensate pump Cut off excess hose and discard Connect the hose to the drain stub on the condensate trap and secure with a 3 4 clamp Upflow Installations Single Pipe N9MP1 amp Direct Vent N9MP2 A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION Rotate 180 for Left Side Combustion Blower Mounting Screws 4 Single Pressure Switch Connections on all models except 125 2 Pressure Switch Connection on all 125 models PVC Vent Extension Pipe c X Exhaust er DRAIN SIDE VIEW I Rotate downward 5 to 10
93. ndensate trap will be located under the fur nace in a vertical position when the furnace is placed horizontally on the right side If needed remove the hole plugs from the fur nace side panel and relocated to the open set of holesinthe oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Remove the 90 elbow and vent fitting from the combustion blow er by loosening the clamps on the vent fitting Connect the 90 el bow to the combustion blower using the rubber coupling and clamps Note for proper alignment ofthe vent pipe through the fur nace the 90 elbow must be installed with the HORIZONTAL lettering onthe 90 elbow facing out Connect the vent fitting to the end of the 90 elbow using the clamp NOTE The 90 elbow is approved for use inside the furnace ONLY NOTE The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Plug the upper drain stub on the vent fitting with the yellow plastic cap Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely
94. nly 2 Direct Vent ONLY 2 pipe only 9MPD Dual Certified Venting 1 or 2 pipes Denotes Brand MODEL NUMBER IDENTIFICATION GUIDE Brand Engineering Rev Brand Identifier Denotes minor changes 8 Non Condensing 80 Gas Furnace Marketing Digit 9 Condensing 90 Gas Furnace Denotes minor change Installation Configuration UP Upflow Cooling Airflow DN Downflow 08 800 CFM UH Upflow Horizontal 12 1200 CFM HZ Horizontal 14 1400 CFM DH Downflow Horizontal 16 1600 CFM MP Multiposition Upflow Downflow Horizontal 20 2000 CFM Cabinet Width Major Design Feature B 15 5 Wide 1 One Single Pipe N Single Stage F 19 1 Wide 2 Two Pipe P PVC Vent J 22 8 Wide D 1 or 2 Pipe T Two Stage L 24 5 Wide L Low NOx V Variable Speed Input Nominal MBTUH Denotes Brand 440 01 1114 00 Printed in U S A START UP CHECK SHEET For 90 Furnace Keep this page for future reference Dealer Name Address City State Province Zip or Postal Code Phone Owner Name Address City State Province Zip or Postal Code Model Number Serial Number Type of Gas Natural LP d Which blower speed tap is used Heating Cooling Temperature of Supply Air F or C Temperature of Return Air F or C Rise Supply Temp Return Temp CF Filter Type and Size Fan Time ON Setting Fan Ti
95. nstall the furnace where the old one was Choose the location or evaluate the existing location based upon the minimum clearance and furnace dimensions Figure 3 CAUTION Special precautions MUST be made if installing furnace inan area which may drop below freezing This can cause improper operation or damage to equipment If furnace environment has the potential of freezing the drain trap and drainline must be protected The use of electric heat tape or RV antifreeze is recommended for these installations See Condensate Trap Freeze Protection Section 440 01 1114 00 3 Install a reliable remote sensing device that will notify somebody of freezing conditions within the home Winter Shutdown If you go away during the winter months and do not leave the heat on in your home the plastic transition box and the condensate trap on the furnace must be protected from freeze damage See Figure 8 trough Figure 17 1 Disconnect the 5 g OD rubber hose from the vent drain fit ting that is located downstream of the combustion blower Insert a funnel into the hose and pour four 4 ounces of sanitary type RV antifreeze into the condensate trap Re connect the 5 g OD rubber hose to the stub on the vent drain fitting Secure with the hose clamp 2 Disconnect the 3 4 OD rubber hose from the condensate trap Insert a funnel into the hose and and pour four 4 ounces of sanitary type RV antifreeze into the plastic Transition box Squ
96. nted to the outside Air Openings and Connecting Ducts 1 Total input rating for all non direct vent gas appliances MUST be considered when determining free area of open ings If the furnace is to be suspended from the floor joists in a crawl space or the rafters in an attic it is necessary to use steel pipe straps or an angle iron frame to rigidly attach the furnace to pre vent movement These straps should be attached to the furnace with sheet metal screws and to the rafters or joists with bolts The preferred method is to use an angle iron frame bolted to the rafters or joists Take caution to allow door panels to be removed for maintenance If the furnace is to be installed in a crawl space consult local codes A suitable concrete pad or blocks are recommended for crawl space installation on the ground NOTE 6 bottom clearance required for condensate trap Thirty 30 inches between the front of the furnace and adjacent construction or other appliances MUST be maintained for service clearance Keep all insulating materials clear from louvered door Insulating materials may be combustible The horizontal furnaces may be installed directly on combustible wood flooring or supports as long as all required furnace clear ances are met See Figure 4 This furnace MUST NOT be installed directly on carpeting or tile or other combustible material other than wood flooring or sup ports For horizontal installation over a fin
97. ntric Fitting 3 or 4 Dia I SDR 26 Pipe 2 or 3 Dia Y Concentric Fitting ERIT sf lt 2 or 3 Dia Rain Cap 25 22 03 2 or 21 Dia SDR 26 Pipe Vertical amp Horizontal Termination 1 Note Determine the pipe diameters required for the installation from Table 10 and Table 11 and Figure 46 Determine the best location for the termination kit See Figure 45 for vertical termination or Figure 45 and Figure 49 for horizontal termination Roof termination is preferred since it is less susceptible to damage has re duced intake contaminants and less visible vent vapor For side wall termination consideration should be given to 1 possible damage from the vapors to plants shrubs other equipment and building materials 2 possible damage to the terminal from foreign objects 3 wind effects that may cause recirculation of flue products debris or light snow and 4 visible vent vapor Cut one 5 diameter hole through the structure for the Kit or one 4 diameter hole for the 2 Kit Dimension D may be lengthened to 60 max or shortened by cutting the pipes to 12 min Dimension A will change ac cording to D dimension See Figure 46 Concentric Vent Roof Installation Vent 0 Maintain 12 min clearance above highest anticipated snow level Max of 24 above roof Combustion Air Roof Boot Flashin
98. nual is intended for use by a qualified service technician who is experienced in such work who is familiar with all A The U S Consumer Product Safety Commission recom precautions and safety procedures required in such mends that users of gas burning appliances install carbon work and is equipped with the proper tools and test monoxide detectors There can be various sources of car instruments bon monoxide in a building or dwelling The sources could Failure to carefully read and follow all instructions in i gas fired clothes dryers gas cooking stoves Water this manual can result in furnace malfunction death eaters furnaces gas fired fireplaces wood fireplaces personal injury and or property damage and several other items Carbon monoxide can cause seri ous bodily injury and or death Therefore to help alert people of potentially dangerous carbon monoxide levels ou should have carbon monoxide detectors listed by a na NOTE This furnace is design certified by the Canadian Stan recognized agency e g Underwriters dards Association CSA for installation inthe United States and ries or CSA International installed and maintained in the Canada Refer to the appropriate codes along with Figure 1 or building or dwelling see Note below Figure 2 and this manual for proper installation eie Carbon monoxide or CO is a colorless and odorless gas Useonly the Type of gas approved for this furnace see pro
99. odels Air Intake Coupling 257 Vent Fitting amp Clamps Rubber Coupling Gas Pipe amp Clamp Grommet Exhaust Pressure Switch Hose Blower Plastic Cap 90 Elbow 7 2 Pressure Switch Connection on 125 models Sig Hose amp Clamps Plastic Cap 5 45 Rubber Hose mr d Some Models have one pressure switch Pressure Switch Blower Single Pressure Switch Connections on all models except 125 Condensate Trap amp Gasket Left or Right Side 2 314 Hose amp Clamps N Pressure Switch Combustion Blower Hose Transition Transition Box Pressure Switch Transition Drain Line Return Air NOTE DO NOT make connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shown in Figure 8 Install the condensate trap hose assem bly tothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole in the casing and push the condensate trap into position Secure with the two screws Reconnect the drain ho
100. ol air passing over heat exchanger can cause condensate to form resulting in heat exchanger failure Connections NOTE On upflow installations return air can enter through either side both sides or the bottom On horizontal or downflow installa tions the return air must enter through the knockout opening in the lower panel of the furnace Return air can not enter through rear of the furnace When the furnace is located in an area near or ad jacent to the living area the system should be carefully designed with returns to minimize noise transmission through the return grille Any blower moving a high volume of air will produce audible noise which could be objectionable to when the unit is located very close to living areas It is advisable to route the return air ducts under the floor or through the attic 1 Forside connections using a 16 x 25 filter cut out the em bossed area shown in Figure 33 This will provide a 141 3 x 22 5 approximate opening Side Return Air Cutout 141 Height of Cutout for 16 x 25 Filter 221 2 Width of Cutout for 16 x 25 Filter P A Embossed Area on Side of Furnace NOTE Furnaces with 5 TONS cooling rating require two 2 side returns or one side return with bottom return 2 Bottom returns can be made by removing the knockout panel in the furnace base Do NOT remove knock out ex cept for a bottom return 3 Installation of locking type dampe
101. or proper installation This pipe may only be shortened if an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely at tach the PVC vent extension pipe to the vent fitting with the clamp This configuration allows left side venting from the furnace If right side venting is required the combustion blower must be relocated on the plastic transition box Loosen the four 4 screws that se cure the blower to the transition approximately 1 2 Rotate the blower 180 and secure with the four 4 screws Note that some combustion blowers have plastic spacers on the mounting legs of the blower located at the 6 and 12 o clock positions blower snout tothe left or right that are required for proper fit up ofthe blowerto the transition Use caution to not over tighten the screws to pre vent stripping out of the plastic mounting holes NOTE Theventfitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Plugthe upper drain stub on the vent fitting with the yellow plastic cap Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is usedto connectthe PVC vent extension tube to field
102. out doors between rooms 2 Anattic or crawl space may be considered an unconfined space providedthere are adequate ventilation openings di rectly to outdoors Openings MUST remain open and NOT have any means of being closed off Ventilation openings to outdoors MUST be atleast 1 square of free area per 4 000 BTUH of total input rating for all gas appliances in area L9 3 Install air intake a minimum of 12 above maximum snow level and clear of any obstruction Duct or ventilation open ing requires one square inch of free area per 4 000 BTUH of total input rating for all gas appliances in area 4 Air inlet MUST be screened with not less than 1 4 mesh screen Unusually Tight Construction In unconfined spaces infiltration may be adequate to provide air for combustion ventilation and dilution of flue gases However in buildings with unusually tight construction additional air MUST be provided using the methods described in section titled Con fined Space Installation Unusually tight construction is defined as Construction with 1 Walls and ceilings exposed to the outside have a continu ous sealed vapor barrier Openings are gasketed or sealed and 2 Doors and openable windows are weather stripped and 3 Otheropenings are caulked or sealed These include joints around window and door frames between sole plates and floors between wall ceiling joints between wall panels at penetrations for plumbing electrical and
103. ow pointed toward the vent pipe Plug the left drain stub on the vent fitting with the yellow plastic cap Remove the pressure switch hose from the upper stub on the plastic transition box Relocatethe plastic caps onthe stubs ofthe plastictransition from the lower stubs to the upper stubs and secure tightly with the clamps Route the pressure switch hose to the lower stub on the plastic transition box Cut off excess hose and discard Connect the pressure switch hose to the lower stub on the plastic transition box Ensure that the hose is routed above the stub on the transi tion box so that condensate does not collect in the hose NOTE Failure to correctly install the pressure switch hose to the transi tion can adversely affect the safety control operation 44001 1114 00 Connect the 3 4 OD rubber hose with the 90 bend to the large drain stub on the condensate trap and secure with a 3 4 clamp Route the hose to the drain stub on the bottom of the plastic transi tion box Cut off excess hose and discard Connect the hose tothe drain stub on the transition and secure with a 3 4 clamp Connect the 5 g OD rubber hose with the 90 bend to the right s tub on the vent fitting and secure with a 5 clamp Route the hose to the smaller drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the trap and secure with a 5 clamp NOTE Route hoses to the condensate trap w
104. owers have plastic spacers on the mounting legs of the blower located at the 6 and 12 o clock positions blower snout to the left or right that are required for proper fit up of the blower to the transition Use caution to not over tighten the screws to pre vent stripping out of the plastic mounting holes For left side mounted condensate trap connect the 3 4 OD rub ber hose with the 90 bend to the large drain stub on the conden sate trap and secure with a 3 4 clamp Route the hose tothe drain stub on the bottomofthe plastictransi tionbox Cutoff excess hose and discard Connect the hose tothe drain stub on the transition and secure with a 3 4 clamp For right side mounted condensate trap connect the 3 4 OD rub ber hose with the 90 bend to the bottom of the plastic transition box and secure with a 3 4 clamp Route the hose to the large drain stub on the condensate trap Cut off excess hose and discard Connect the hose to the drain stub on the condensate trap and secure with a 3 4 clamp Upflow Installations Dual Certified 9MPD A4 Models RIGHT Side Venting Supply Air Trap Connection Clamp ears Pointed OUT Preassemble and insert into furnace Mounting Screws 4 for Rotating Combustion Blower Optional on some models NOTE TRAP MUST BE PRIMED BEFORE OPERATION Vent Fitting amp Clamps EE ES INASTALLATION
105. pe and air inlet pipe by referring to all of the instructions and guidelines in this Section 2 Determine the size required for the vent pipe and air inlet pipe 3 Loosely assemble all venting parts without adhesive pipe joint cement for correct fit before final assembly 4 Use of vertical piping is preferred because there will be some moisture in the flue gases that may condense as it leaves the vent pipe See Special Instruction For Horizon tal Vents 5 The vertical vent pipe MUST be supported so that no weight is allowed to rest on the combustion blower 6 Exhaustvent piping or air inlet piping diameter MUST NOT be reduced 7 exhaust vent piping from the furnace to termination MUST slope upwards A minimum of 1 4 per foot of run is required to properly return condensate to the furnace drain system 8 Use DWV type long radius elbows whenever possible as they provide for the minimum slope on horizontal runs and they provide less resistance in the vent system If DWV el bows cannot be used use two 45 elbows when possible On horizontal runs the elbows can be slightly misaligned to provide the correct slope 9 All horizontal pipe runs MUST be supported at least every five feet with galvanized strap or other rust resistant materi al NO sags or dips are permitted 10 All vertical pipe runs MUST be supported every six feet where accessible 11 The minimum pipe run length is 2 12 The piping canbe r
106. placement Parts 9MPD Models 9MPDO50F 12A4 9MPDO075F 12A4 9MPD080J16A4 9MPD100J14A4 9MPD100J20A4 amp 9MPD125L20A4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Key Description Abe ei ee No Non Functional Number 050F12A 075F12A 080J16A 100J14A 100J20A 125L20A W Gasket Attachment Plate 1012542 2 1012543 2 1012544 2 2 2 1012545 H E 2 X Cover Junction Box 1012350 1 1 1 1 1 1 Y Box Junction 1012349 1 1 1 1 1 1 Z Tube Pilot 1012832 1 1 1 1 1013077 1 1012834 1 AA Bracket Pilot 1010901 1 1 1 1 1 1 BB Manifold 1012276 1 1012277 1 1012278 1 1 1 1012279 5 1 CC Bottom Burner Box 1012334 1 1 1012335 1 1 1 1012336 1 DD Baffle Burner Box 1012338 1 1 1012339 1 1 1 1012340 1 EE Top Burner Box 1013702 1 1 1013703 1 1 1013704 1 FF Bracket Manifold Support 1012377 2 2 2 2 2 2 GG Bracket Burner Box Side 1012532 2 2 2 2 2 2 HH Bracket Control Mounting 1012321 1 1 1 1 1 1 JJ Tube Sensor 1009238 1 1 1 1 1 1 KK Trap Drain Assembly 1013676 1 1 1 1 1 1 LL Sightglass Comfortmaker amp Heil 1013235 1 1 1 1 1 1 Tempstar Only 1013236 1 1 1 1 1 1 X PART NOT ILLUSTRATED X Door Screws 1013349 4 4 4 4 4 4 X Door Screw Retaine
107. re 16 NOTE DO NOT make hose connections until the hose routing and lengths have been determined Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps position the clamps as shownin Figure 16 Install the condensate trap hose assemblytothe furnace casing Hook one side ofthe clamp ears onthe drain stub through the hole in the casing and push the con densate trap into position Secure with the two screws Recon nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps Relocate the plastic caps and clamps on the condensate drain trap from the vertical drain stub to the horizontal drain stubs Se cure the clamps tightly to prevent condensate leakage Mount the condensate drain trap in a vertical position to the right side of the furnace using the two screws and gasket that are pro vided Note The condensate trap will be located under the fur nace in a vertical position when the furnace is placed horizontally on the right side If needed remove the hole plugs from the fur nace side panel and relocate to the open set of holes in the oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Ensure that the vent fitting is securely attached to the combustion blower using the clamps NOTE The vent fitting MUST be installed with the airflow marking arr
108. rner Flame Check Allow the furnace to run approximately 10 minutes then inspect the main burner and pilot flames See Figure 42 Check for the following Figure 42 Stable and blue flames Dust may cause orange tips or wisps of yellow but flames MUST NOT have solid yel low tips Flames extending directly from burner into heat ex changer Flames do NOT touch sides of heat exchanger If any problems with main burner flames are noted it may be nec essary to adjust gas pressures or check for drafts Main Burner Burner Face Temperature Rise Check The blower speed MUST be set to give the correct airtemperature rise through the furnace as marked on the rating plate Tempera ture rise is the difference between supply and return air tempera tures 44001 1114 00 To check temperature rise use the following procedure 1 Place thermometers in supply and return air registers as close to furnace as possible avoiding direct radiant heat from heat exchangers 2 Operatefurnace continuously for 15 minutes with all regis ters and duct dampers open 3 Take reading and compare with range specified on rating plate 4 Ifthe correct amount of temperature rise is NOT obtained it may be necessary to change blower speed A higher blow er speed will lower the temperature rise A lower blower speed will increase the temperature rise Changing Blower Speed A WARNING ELECTRICAL SHOCK HAZARD Failure to do so can
109. rs 1013725 4 4 4 4 4 4 X Clamp Hose 3 4 1012976 2 2 2 2 2 2 X Clamp Hose 5 g 1012975 2 2 2 2 2 2 X Coupling Air Intake 1012284 1 1 1 1 1 1 X Clamp Hose 1013830 4 4 4 4 4 4 X Drain Vent 1014003 1 1 1 1 1 1 X Coupling Discharge 1002522 2 2 2 2 2 2 X Elbow 90 1013920 1 1 1 1 1 1 X Pipe PVC 1171527 1 1 1 1 1 1 X Gasket Air Intake 1012583 1 1 1 1 1 1 X Gasket Trap 1013701 1 1 1 1 1 1 X Grommet Vent 1012697 1 1 1 1 1 1 X Harness Wire 1013716 1 1 1013718 1 1 1013719 1 X Bushing Strain 1945287 1 1 1 1 1 1 X Grommet Vinyl 1009535 1 1 1 1 1 1 Hose Drain 1 1014358 1 1 1 1 1 1 X Hose Drain 5 6 1014359 1 1 1 1 1 1 X Hose Drain 3 16 1009238 1 1 1 1 1 1 X Installation Manual 44001111400 1 1 1 1 1 1 X User s Manual 44102200300 1 1 1 1 1 1 Denotes Brand 440 01 1114 00 Replacement Parts 9MPD Models 9MPDO50F 12A4 9MPDO075F 12A4 9MPD080J16A4 9MPD100J14A4 9MPD100J20A4 amp 9MPD125L20A4 Natural Gas Replacement part supplied will be current active part For parts not listed consult place of purchase Key Description Part 9MPD No Non Functional Number 050F12A 075F12A 080J16A 100J14A 100J20A 125L20A Gas Conversion Kits Nat to LP NAHFOO2LP 1009509 LP to Nat 02 1009510 Nat to LP NAHFOOS3LP 1013815 1 LP to Nat NAHFOO3NG 1013816 1 Order from Service Parts 1 1 1 1 Replacement Parts N9MP1 amp N9MP2 Models N9MP10
110. rs are recommended in all branches or in individual ducts to balance system s air flow 4 Non combustible flexible duct connectors are recom mended for return and supply connections to furnace 5 If air return grille is located close to the fan inlet install at least one 90 air turn between fan and inlet grille to reduce noise NOTE To further reduce noise install acoustical air turning vanes and or line the inside of duct with acoustical material Sizing Existing or new ductwork MUST be sized to handle the correct amount of airflow for either heating only or heating and air condi tioning 440 01 1114 00 Insulation 1 Insulate ductwork installed in attics or other areas exposed to outside temperatures with a minimum of 2 insulation and vapor barrier 2 Insulate ductwork in indoor unconditioned areas with a minimum of 1 insulation with indoor type vapor barrier Filters A Filter must be used Filters are not supplied with these furnaces but can be purchased from dealer Use either filter type Washable high velocity filters are based on a maximum air flow rating of 600 FPM Disposable low velocity filters are based on a maximum air flow of 300 FPM when used with filter grille NOTE Disposable low velocity filters may be replaced with washable high velocity filter providing they meet the minimum size areas Washable high velocity filters can be replaced ONLY with same type and size
111. s or in absence of local codes the applicable national codes When the installation is complete see the Venting and Com bustion Air Check in this manual Direct Vent N9MP2 Models This furnace is certified as a category IV appliance This furnace uses outside air for combustion ONLY it MUST be taken from the same atmospheric pressure zone as the vent pipe See Con fined Space Installation in the Combustion and Ventilation Air in this manual Dual Certified 9MPD Models This furnace is certified as a category IV appliance This furnace canbe installed as a direct vent furnace using outside air for com bustion or the furnace can use air from inside the structure for combustion The INLET air pipe is optional If combustion air comes from inside the structure adequate make up air MUST be provided to compensate for oxygen burned See Confined Space Installation in the Combustion and Ventilation Air chapter If combustion air is drawn from outside the structure it MUST be taken from the same atmospheric pressure zone as the vent pipe Contaminated Combustion Air Installations in certain areas or types of structures will increase the exposure to chemicals or halogens that may harm the fur nace Thefollowing areas ortypes of structures may contain or have ex posure to the substances listed below The installation must be evaluated carefully as it may be necessary to provide outside air for combustion Commercial bui
112. ses to the stubs on the vent fitting and the plastic transi tion and secure with the clamps Mount the condensate drain trap in a vertical position to either the left or right side of the furnace using the two screws and gasket that are provided If needed remove the hole plugs from the fur nace side panel and relocate to the open set of holes in the oppo site side panel NOTE All gaskets and seals must be in place for sealed combus tion applications Component Identification for Illustration for Figure 8 thru Figure 17 for specifies Pointed OUT Preassemble amp insert into fur nace Ensure that the vent fitting and the 90 elbow are securely at tached to the combustion blower using the clamps Note for prop er alignment of the vent pipe through the furnace the 90 elbow must be installed with the UPFLOW lettering on the 90 elbow facing out NOTE The 90 elbow is approved for use inside the furnace ONLY Plug the upper drain stub on the vent fitting with the yellow plastic cap For left side venting remove 90 elbow from the vent fitting by loosening the clamp on the vent fitting Securely attach vent fitting to combustion blower NOTE For left side venting the vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Connectthe PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist ven
113. stem will reset and initiate a new ignition sequence Soft Lockout Gas supply off or pressure too low or high for appliance to operate Last failure was Flame Sense lost during run Line voltage HOT lead wire not connected to L1 terminal on ST9160B Furnace not properly earth grounded 6 Flashes Maximum recycle count exceeded Flame sense rod contaminated or in incorrect position Pilot burner located in incorrect position Combustion air blower is de energized Circulating blower Pilot burner lead wires are in good condition and properly connected de energized after the OFF delay Cycling pressure switch Condensate drain blocked After 5 minute delay time control system will reset and initiate a Pressure switches operation tubing and wiring new ignition sequence 2 Hashes 440 01 1114 00 HONEYWELL SV9541M SMART VALVE Trouble shooting continued LED STATUS INDICATES CHECK REPAIR Soft Lockout Last failure was pressure switch Ignition system control switch must be in the ON position 6 Flashes Maximum recycle count exceeded Pressure switches operation tubing and wiring 3 Flashes 2 r Restrictions in furnace air intake or vent piping Combustion air blower is de energized Circulating blower is de KAMEN High winds blowing against vent energized after the OFF delay After 5 minute delay time control system will reset and initiate a new ignition sequence Soft Lockout Last
114. t Pipes MUST be supported Horizontall B 8 and Vertically J Min 20 Max in same atmospheric zone VENT PIPE Increase minimum from 8 to 18 for cold climates sustained temperatures below 0 F 25 23 33a Installation Requirements 1 Install furnace level 2 This furnace is NOT to be used for temporary heat of build ings or structures under construction 3 Install furnace as centralized as practical with respect tothe heat distribution system 4 Install the vent pipes as short as practical See Vent and Combustion Air Piping section 5 Maintain clearance for fire safety and servicing front clearance of 30 is required for access to the burner con trols and filter 6 Usearaised base for upflow furnace if the floor is damp or wet at times 7 Fordownflow installations non combustible subbase must be used under the furnace unless installation is on a non combustible floor surface This requirement applies even when a coil box or cabinet is used A WARNING FIRE HAZARD Failure to install unit on noncombustible subbase can result in death personal injury and or property damage Place furnace on noncombustible subbase on down flow applications unless installing on non combus tible flooring 8 For horizontal installations line contact is permissible only between lines formed by intersection of back and two sides
115. t condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation 440 01 1114 00 This pipe may only be shortened if an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely at tach the PVC vent extension pipe to the vent fitting with the clamp This configuration allows left side venting from the furnace If right side venting is required the combustion blower must be relocated on the plastic transition box Loosen the four 4 screws that se NOTE For right side venting the vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope See Figure 9 Plug the upper drain stub on the vent fitting with the yellow plastic cap Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp cure the blower to the transition approximately 1 2 Rotate the blower 180 and secure with the four 4 screws Note that some combustion bl
116. tained below 0 F the 18 Min Vent Termination Shielding Under certain wind conditions some building materials may be af fected by flue products expelled in close proximity to unprotected surfaces Sealing or shielding of the exposed surfaces with a cor rosion resistant material such as aluminum sheeting may be re quired to prevent staining or deterioration The protective material should be attached and sealed if necessary to the building be fore attaching the vent terminal Multi Vent Termination Clearances When two 2 or more furnaces are vented near each other each furnace must be individually vented Two 2 vent terminations may be installed as shown in Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 and Figure 27 but the next vent termination must be atleast 36 away from first 2 terminations It is important that vent terminations be made as shown to avoid recirculation of flue gases Concentric Vent and Combustion Air Roof Termination 12 Min Grade or Snow Level Combustion Air Dimension A is touching or 2 maximum separation 44001 1114 00 Concentric Vent and Combustion Rooftop Inlet Vent and Exhaust Air Sidewall Termination Air Termination 18 Min for Cold Climates Sustained Below 0 F 25 22 43 Recommended Alternate Installation for Sustained Cold Weather 0 F amp below 12 MIN EXHAUST OVERHANG 18 Min for Cold Climates Sustained Below 0
117. trap and secure with a 3 4 clamp Route the hose to the drain stub on the bottom ofthe plastic transi tion box Cut off excess hose and discard Connect the hose tothe drain stub on the transition and secure with a 3 4 clamp The pressure tap on the condensate trap MUST be connected to the unused pressure tap located on the top of the plastic transition box Remove the plastic caps from the pressure taps on the con densate trap and the plastic transition and connect with the 5 16 OD rubber hose NOTE This will require drilling a 5 16 OD hole inthe furnace cas ing next to the condensate trap NOTE Ensure hoses maintain a downward slope to the conden sate trap with no kinking or binding for proper condensate drain age Horizontal Right Installations Dual Certified 9MPD A4 Models NOTE TRAP MUST BE PRIMED BEFORE OPERATION DRAIN SIDE VIEW Combustion Vent Fitting 2 Air Pipe Optional amp Clamps Yellow Plastic Cap NOTE Built in channel will be angled 5 to 10 also Vent Pipe PVC Vent a Extension Pipe Vent Fitting amp Clamps y pees Exhaust gt Rubber Couplin amp Clamps 2 oq Plastic Cap 50 Sh Hose 116 Rubber amp Clamps Model shown with two pressure switches ____
118. tric Vent Termination Kit 1 Determine termination locations based on clearances spe NAHAO01CV amp NAHAO02CV cified in following steps and as shown in Figure 7 These kits are for vertical or horizontal termination of the combus Figure 44 through Figure 49 tion air inlet and the exhaust vent pipes on Category IV gas fired condensing furnaces The NAHA001CV kit can be used for 3 di ameter pipe systems The NAHAOO02CV kit can be used for 2 diameter pipe system Refer to Table 10 for the correct pipe size 3 Do NOT terminate over public walkways Avoid areas forthe furnace Both the combustion airinlet and the exhaust vent where condensate may cause problems such as above pipes must attach to the termination kit The termination kit must planters patios or adjacent to windows where steam may terminate outside the structure and must be installed per the cause fogging instructions outlined below for vertical or horizontal termination 44001 1114 00 2 The vent termination must be located at least 12 above ground or normally expected snow accumulation levels Vertical termination is preferred Field supplied pipe and fittings are required to complete the installation Kit Components Kit Contents 3 Rain Cap or 2 Rain Cap 3 Diameter SDR 26 Pipe 191 3 Long or 4 Diameter SDR 26 Pipe 371 8 Long 2 Diameter SDR 26 Pipe 315 6 Long or 215 Diameter SDR 26 Pipe 24 Long 3 Y Concentric Fitting or 2 Y Conce
119. ucer is energized Ignition system control switch must be in the ON position 3 Flashes Pressure switches operation tubing and wiring System goes into 5 minute delay period with combustion blower Restrictions in furnace air intake or vent piping inducer off At end of the 5 minute delay another cycle will begin Main Limit or Roll Out Switch is open Main limit switch Manual reset burner rollout switch 4 Flashes DEA MCN Combustion blower is energized Circulating blower is energized Limit and rollout switch wiring is good condition and securely heat speed connected Flame signal sensed out of proper sequence Flame at pilot burner 5 Flashes Combustion blower is energized Circulating blower is energized heat speed after the ON delay Soft Lockout Gas supply off or pressure too low or high for appliance to operate Damaged or broken HIS element Line voltage HOT lead wire not connected to L1 terminal on ST9160B 6 Flashes P Furnace not properly earth grounded Combustion air blower is de energized Circulating blower is de Sp 1 Flash Flame sense rod contaminated or in incorrect position energized after the OFF delay 25 9 y Pilot burner located in incorrect position Pilot burner lead wires are in good condition and popery connected Pressure switches operation tubing and wiring Failed to light pilot during 90 sec trial for ignition After 5 minute delay time control sy
120. uninthe same chase or adjacentto sup ply or vent pipe for water supply or waste plumbing It can also be runin the same chase with a vent from another 90 furnace NOTE In NO case can the piping be run in a chase where temperatures can exceed 140 F or where radiated heat 44001 1114 00 from adjacent surfaces would exceed 140 F 13 The vent outlet MUST be installed to terminate the same atmospheric pressure zone as the combustion air inlet 14 The vent system can be installed in an existing unused chimney provided that Both the exhaust vent and air intake run the length of the chimney No other gas fired appliance or fireplace solid fuel is vented into the chimney The top of the chimney MUST be sealed flush or crowned upto seal againstrain or melting snow so ONLY the piping protrudes The termination clearances shown in Figure 7 are main tained 15 Furnace applications with vertical vents requiring vent di ameter increaser fittings must have increaser fittings installed in vertical portion of the vent Condensate will be trapped in the vent if the vent diameter is increased prior to having an elbow turned upward This could cause nui sance tripping of the pressure switch Piping Insulation Guidelines NOTE Use closed cell neoprene insulation or equivalent If Fi berglass or equivalent insulation is used it must have a vapor bar rier Use R values of 7 up to 10 R 11 if exposure exceeds 10
121. ust be corrected in accor dance with the National Fuel Gas Code ANS Z223 T NFPA 54 CSA B149 1 Natural Gas and Pro pane Installation Codes 9 After it has been determined that each appliance con nected to the venting system properly vents when tested as outlined above return doors windows exhaust fans fireplace dampers and any other gas fired burning ap pliance to their previous conditions of use For Two Pipe Installation This furnace can NOT be common vented or connected to any type B BW or L vent or vent connector nor to any portion of a fac tory built or masonry chimney If this furnace is replacing a pre viously common vented furnace it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the other remaining appliance s See Venting and Combustion Air Check in this section This furnace MUST be vented to the outside 44001 1114 00 4 Vent and Combustion Air Piping WARNING CARBON MONOXIDE POISONING FIRE AND EXPLO SION HAZARD Failure to properly vent this furnace can result in death personal injury and or property damage Read and follow all instructions in this section Single Pipe N9MP1 Models This furnace is certified as a category IV appliance This furnace requires ventilation openings to provide air for proper combustion and ventilation of flue gases All duct or openings for supplying combustion and ventilation air must comply with the gas code
122. xchangers in the downflow installation Note When using the subbase for combustible floors the dis charge air duct flanges on the furnace MUST be broken down to provide proper fit up to the subbase Use duct pliers to bend the duct flanges flat onto the furnace casing DO NOT bend the duct flanges inward toward the heat exchangers as air flow restric tions may occur The Subbase for Combustible Floors MUST be used when a downflow furnace is set on a combustible floor even whenthe fur nace is installed on a coil box 1 Cutthe openingin the floor accordingto Table 8 The hole in the floor must be cut to the dimensions listed in Table 8 sincethe baseis equipped with locatingtabs that center the base over the opening The opening in the base is 11 4 shorter and 11 8 narrower than the recommended size of the opening in the floor This is done to maintain clearance between the floor and the plenum 2 Fabricate the plenum to the dimensions given in Table 8 Note that the dimensions given are outside dimensions 44001 1114 00 Subbases for Combustible Floors Dimensions _ Subbase for Combustible Openina In Floor Opening In Base Typical Plenum irre for MU Floor Dimensions pening For Plenum Dimensions oors Part Number RE s x N Furnace Subbase NAHHOO1SB 1511 16 283 4 149 6 16 161 4 145 8 15 131 5 15 131 2 15 15 15 177 1927 227 227 Suet
123. xtension tube to field installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp This configuration allows left side venting from the furnace If right side ventingis required the combustion blower must be relocated on the plastic transition box Loosen the four 4 screws that se cure the blower to the transition approximately 1 3 Rotate the blower 180 and secure with the four 4 screws Note that some combustion blowers have plastic spacers on the mounting legs of the blower located at the 6 and 12 o clock positions blower snout to the left or right that are required for proper fit up of the blower to the transition Use caution to not over tighten the screws to pre vent stripping out of the plastic mounting holes NOTE The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe with the drain stub at a 5 to 10 downward slope Plug the upper drain stub on the vent fitting with the yellow plastic cap Connect the PVC vent extension pipe to the vent fitting This pipe has a built in channel to assist vent condensate disposal Align the arrow onthe PVC pipe with the airflow marking arrow on the vent fitting See label on the PVC pipe for proper installation This pipe may only be shortened if an elbow is used to connect the PVC vent extension tube to field installed vent pipe Securely at tachthe PVC vent extension pipe to the vent fitting with the clamp
124. zed However the electronic air cleaner is NOT energized during con tinuous fan operation controlled by the electronic fan control Fan Control The fan control is preset at the factory with a fixed blower ON delay of 30 seconds inthe heating mode The blower OFF timing is preset at 140 seconds If desired the fan OFF delay can be re setto obtain the longest delay times while still maintaining comfort levels See Furnace Wiring Diagram Fan Delay DIP Switch Settings COOL ON DELAY 6 SEC COOL OFF DELAY 60 SEC HEAT ON DELAY 30 SEC HEAT OFF DELAY uw W aw Mp OFF 12 12 12 12 60 SEC 100SEC 140SEC 180SEC 25 23 47 Electrical Connections NOTE Junction Box can be mounted to either the left or right side Models may have 1 or 2 pressure switches 25 23 42 7 Ductwork and Filter A WARNING CARBON MONOXIDE POISONING HAZARD Failure to properly seal duct can result in death personal injury and or property damage Do NOT draw return air from inside a closet or utility room Return air duct MUST be sealed to furnace casing Installation NOTE Design and install air distribution system to comply with Air Conditioning Contractors of America manuals and or NFPA pamphlets 90A and 90B or other approved methods that conform to local codes and good trade practices 1 When furnac
125. zed during the entire 90 second trial for ignition COMBUSTION BLOWER DE ENERGIZED AFTER 30 SECOND POST PURGE NOTE If main limit string opens and takes longer than 2 minutes to close system goes into 1 hour wait period CIRCULATING BLOWER OFF AFTER DELAY WAIT FOR NEXT CALL FOR HEAT 44001 1114 00 HONEYWELL SV9541M SMART VALVE Trouble shooting The 6 X designation indicates a combination of flash codes 6 flashes shows the control is in soft lockout followed by X flashes to indicate the reason the control went into soft lockout Last status code indicates repair to address first LED INDICATES CHECK REPAIR Line voltage input at L1 and Neutral connectors on ST9160B Fan Timer Off No power to system control Low voltage 24V power at 24 VAC and COM terminals on ST9160B System wiring harness is in good condition and securely connected Heartbeat Normal indication whenever the system is powered unless some Not Applicable Normal Operation stand by or call for heat Bright Dim abnormal event has occurred switches closed wen it should be open Pressure switches stuck closed system will wait for pressure switch to i e when call for heat begins 2 Hashes Combustion blower is not energized until pressure switches Pressure switches miswired or jumpered opens Pressure switches open when they should be closed i e longer than 30 seconds after combustion blower ind

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