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Allied Air Enterprises 92G1UH Furnace User Manual

1. 90 ells 90 ells Standard Termination at Elevation 4 501 to 10 000 410 135 _ HERE ENS _ Call Technical Service _ 4 NEN NEN j 2 j 090 O MEME d Call Technical Service S wa ws II Technical Service s S p Pipe Size e lt o e Lu w w ga e wi c ga e o o LO LO LO OTL LO ojo LO o a st st w Dj lt eio lt col iolz 1 o st st gt 2 LO O LO LO ou 0 c LO LO lt eiu LO LO aT LO m eel r lt a eo cal eo co oo eo eo eo uw x led p op Concentric Termination at Elevation T to 10 000 410 135 045 oso S _ j _ LJ II Technical Service Call Technical Service Call Technical Service Table 5 506501 01 Issue 1031 Page 18 of 48 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN UPFLOW DIRECT OR NON DIRECT VENT APPLICATIONS Pipe size determined in table 5 TRANSITION 2 DO NOT transition Use only the factory from smaller to larger supplied trap Trap can pipe in horizontal runs be installed on either of exh
2. 2 Construct a raised wooden frame and cover frame with a plywood sheet If unitis installed above finished space fabricate an auxiliary drain pan to be installed under unit Set unit in drain pan as shown in Figure 17 Leave 8 inches for service clearance below unit for condensate trap Provide a service platform in front of unit When installing the unit in a crawl space a proper support platform may be created using cement blocks 4 Route auxiliary drain line so that water draining from this outlet will be easily noticed by the homeowner 5 If necessary run the condensate line into a condensate pump to meet drain line slope requirements The pump must be rated for use with condensing furnaces Protect the condensate discharge line from the pump to the outside to avoid freezing 6 Continue with exhaust condensate and intake piping installation according to instructions 506501 01 INTAKE PIPE EXHAUST PIP GAS CONNECTOR Gas connector may be used for Canadian installation if accept abis by local authority having jurisdiction RAISED J PLATFORM SERVICE PLATFORM Figure 17 Return Air Horizontal Applications Return air may be brought in only through the end of a furnace installed in the horizontal position The furnace is equipped with a removable bottom panel to facilitate installation See Figure 13 Filters This unit is not equipped with a filter or rack A field provided filter is requi
3. WALL SUPPORT EXTENDED APPLICATION See venting Table 5 for maximum venting lengths with this arrangement Use wall support every 24 610 mm Use two wall supports if extension is greater than 24 610 mm but less than 48 1219 mm NOTE One wall support must be 6 152 mm from top of each pipe intake and exhaust 2 51 mm 3 76 mm Vent Pipe Vent Pipe A Minimum clearance above grade or average 12 305 mm 12 305 mm snow accumulation B Maximum horizontal separation between 6 152 mm 6 152 mm intake and exhaust C Minimum from end of exhaust to 6 152 mm 6 152 mm inlet of intake D Maximum exhaust E Maximum wall support distance from top of each 6 152 mm 6 152 mm pipe intake exhaust Figure 32 Page 26 of 48 On field supplied terminations for sidewall exit exhaust piping may extend a maximum of 12 inches 305 mm for 2 PVC and 20 inches 508 mm for 3 76 mm PVC beyond the outside wall Intake piping should be as short as possible See Figures 31 and 32 On field supplied terminations a minimum distance between the end of the exhaust pipe and the end of the intake pipe without a termination elbow is 8 and a minimum distance of 6 with a termination elbow See Figures 31 and 32 If intake and exhaust piping must be run up a side wall to position above snow accumulation or other obstructions piping must be supported every 24 610 mm as shown in Figures 31 and 32
4. 441193 30628 and 81 20 approved for use in Canadian installations to meet 5 149 TT The 441 92 Concentric kit is provided with a 1 1 2 accelerator which must be installed on fhe exhaust outlet When this Kit is used with this furnace Table 3 Joint Cementing Procedure 1 Measure and cut vent pipe to desired length All cementing of joints should be done according to the 2 Deburand chamfer end of pipe removing any ridges or specifications outlined in ASTM D 2855 rough edges If end is not chamfered edge of pipe may remove cement from fitting socket and result in a leaking joint 3 Clean and dry surfaces to be joined DANGER 4 Test fit joint and mark depth of fitting on outside of pipe DANGER OF EXPLOSION D Uniformly apply a liberal coat of PVCD primer for PVC Fumes from PVC glue may ignite during system check Allow fumes to dissipate for at least 5 minutes before placing unit into operation or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket NOTE Time is critical at this stage Do not allow primer to dry before applying cement 506501 01 Issue 1031 Page 15 of 48 Promptly apply solvent cement to end of pipe and inside socket surface of fitting Cement should be applied lightly but uniformly to inside of socket Take care to keep excess cement out of socket Apply second coat to end of pipe Immediately after applying last co
5. Printing inks paint removers varnishes etc Hydrochloric acid Antistatic fabric softeners for clothes dryers Masonry acid washing materials In the past there was no problem in bringing in sufficient outdoor air for combustion Infiltration provided all the air that was needed In today s homes tight construction practices make it necessary to bring in air from outside for combustion Take into account that exhaust fans appliance vents chimneys and fireplaces force additional air that could be used for combustion out of the house Unless outside 506501 01 air is brought into the house for combustion negative pressure outside pressure is greater than inside pressure will build to the point that a down draft can occur in the furnace vent pipe or chimney As a result combustion gases enter the living space creating a potentially dangerous situation In the absence of local codes concerning air for combustion and ventilation use the guidelines and procedures in this section to install these furnaces to ensure efficient and safe operation You must consider combustion air needs and requirements for exhaust vents and gas piping Aportion of this information has been reprinted with permission from the National Fuel Gas Code ANSI Z223 1 NFPA 54 This reprinted material is not the complete and official position of ANSI on the referenced subject which is represented only by the standard in its entirely In Canada refe
6. When exhaust and intake piping must be run up an with pipe sized per Table 6 The intake piping may be equipped with a 90 elbow turndown Using turndown will add 5 feet 1 5 m to the equivalent length of the pipe A multiple furnace installation may use a group of up to four terminations assembled together horizontally as shown in Figure 35 DIRECT VENT CONCENTRIC ROOFTOP TERMINATION 71M80 69M29 or 60L46 US 41W92 or 41W93 Canada 1 1 2 38 mm accelerator provided on 71 80 and EXHAUST 44W92 kits VENT 12 305mm Minimum Above Average SHEET METAL STRAP Clamp and sheet metat strap must be field installed to support the weight of the termination kit FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION Figure 33 506501 01 DIRECT VENT CONCENTRIC WALL TERMINATION 71M80 69M29 OR 60L46 US 41W92 or 41W93 Canada 1 1 2 38 mm accelerator provided 1M80 amp 44W92 kits for 045 and 070 units FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION OUTSIDE WALI EXHAUST EXHAUST 12 305mm Min above grade or average snow accumulation Figure 34 OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT INSTALLATION OF DIRECT VENT WALL TERMINATION EXHAUST VENT INTAKE 12 305 mm Min above grade or average snow accumulation INTAKE AR 4 7 Inches mm Side View o _ optional intake elbow Figure
7. me UG TAPA FARA LAUREA 3 DUCT SYSTEM SUPPLY AIR DUCT Sealed Insulated if necessary RETURN DUCT Sealed Filter Installed and Clean C Grilles Unobstructed VOLTAGE CHECK Supply Voltage Electrical Connections Tight 506501 01 UNIT OPERATION Heating Mode Cooling Mode 3 GAS MANIFOLD PRESSURE W C 3 INDOOR BLOWER AMPS 2 COMBUSTION SAMPLE CO PPM 4 TEMPERATURE DROP Retum Duct Temperature G INDOOR BLOWER __ Supply Duct Temperature Temperature Drop 3 TEMPERATURE RISE cdi Supply Duct Temperature 5 TOTAL EXTERNAL STATIC dry coil Return Duct Temperature Supply External Static Return External Static Total External Static TOTAL EXTERNAL STATIC DRAIN LINE Supply External Static Return External Static Total External Static Temperature Rise Leak Free CONDENSATE LINE 5 THERMOSTAT yo lt Adjusted and P ed 1 Leak Free lt _ Adjusted and Programm VENT PIPE A _ Explained Operation to Owner _ Leak Free 5 L3 Combustion DDN Temperatures Blower Motor Amps uu Nu y uu gf y y yu M ut m M up ar uf Contractor s Name Telephone Checklist Completed Job Address Techniclan s Name 506501 01 Issue 1031 Page 47 of 48 REQUIREMENTS for COMMONWEALTH of MASSACHUSETTS Modifications to NFPA 54 Chapter 10 Revise NFPA 54 section 10 8 3 to add the following req
8. 35 506501 01 Minimum 12 305 mm plate or average snow DIRECT VENT APPLICATION USING EXISTING CHIMNEY STRAIGHT CUT OR ANGLE CUT IN DIRECTION OF SLOPE 3 8 OF 76 mm 203 mm F 8 12 203mm 305 mm INTAKE PIPE SHOULDER OF FITTINGS INSULATION aptonal PROVIDE SUPPORT OF PIPE ON TOP PLATE ALTERNATE INTAKE PIPE above chimney top accumulation PORTION OF CHIMNEY SIZE TERMINATION PIPE PER TABLE 6 NOTE Do not discharge exhaust gases directly into any chimney or vent stack If vertical discharge through an existing unused chimney or stack is required insert piping inside chimney until the pipe open end is above top of chimney and terminates as illustrated In any exterior portion of chimney the exhaust vent must be insulated Figure 36 Details of Exhaust Piping Terminations for Non Direct Vent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the roof In attic or closet installations vertical termination through the roof is preferred Figures 37 through 40 show typical terminations 1 Issue 1031 Exhaust piping must terminate straight out or up as shown The termination pipe must be sized as listed in Table 6 The specified pipe size ensures proper velocity required to move the exhaust gases away from the building On field supplied terminations for side wall exit exhaust piping may extend a maximum of 12 inch
9. 42 of 48 Issue 1031 Winterizing and Condensate Trap Care 1 Turn off power to the furnace 2 Haveashallow pan ready to empty condensate water 3 Remove the clean out cap from the condensate trap and empty water Inspect the trap then reinstall the clean out cap Cleaning Heat Exchanger If cleaning the heat exchanger becomes necessary follow the below procedures and refer to Figure 1 when disassembling unit Use papers or protective covering in front of furnace while removing heat exchanger assembly 1 Turn off electrical and gas supplies to the furnace 2 Remove the burner access panel 3 Mark all gas valve wires and disconnect them from valve 4 Remove gas supply line connected to gas valve 5 Remove sensor wire from flame sensor Disconnect 2 pin plug from the ignitor 6 Disconnect wires from flame rollout switches 7 Remove four burner assembly screws at the vestibule panel and remove gas valve manifold and burner box as a single unit 8 If necessary clean burners at this time Follow procedures outlined in Burner Cleaning section 9 Remove the clean out cap on trap and drain Replace cap 10 Disconnect condensate drain line from the condensate trap Remove condensate trap it may be necessary to cut drain pipe Remove the 1 2 NPT fitting from the cold end header box Disconnect drain tubes from cold end header collector box 11 Disconnect condensate drain tubes from flue collar Remove scr
10. Combustion air pressure switch proves blower operation Switch is factory set and requires no adjustment 3 After a 15 second prepurge the hot surface ignitor energizes 4 After a20 second ignitor warm up period the gas valve solenoid opens 5 Gas is ignited flame sensor proves the flame and the combustion process continues 6 If flame is not detected after first ignition trial the ignition control will repeat steps 3 and 4 four more times before locking out the gas valve The ignition control will then automatically repeat steps 1 through 6 after 60 minutes To interrupt the 60 minute period move thermostat from Heat to OFF then back to Heat Heating sequence then restarts at step 1 506501 01 Gas Pressure Adjustment Gas Flow Approximate GAS METER CLOCKING CHART Seconds for One Revolution LP DIAL 400 J 55 Natural 1000 ft Table 8 cur U UJ Of ar TO 136 82 o 86 t LP 2500 btu cu ft Furnace should operate at least 5 minutes before checking gas flow Determine time in seconds for two revolutions of gas through the meter Two revolutions assures a more accurate time Divide by two and compare to time in Table 8 If manifold pressure matches Table 9 and rate is incorrect check gas orifices for proper size and restriction Hemove temporary gas meter if installed NOTE 7o obtain accurate reading shut off all other gas appliances connected to meter Supply P
11. LP Propane gas will settle close to the floor and may be difficult to smell An LP Propane leak detector should be installed in all LP applications Use only the type of gas approved for use with this furnace Hefer to unit nameplate A95UH A93UH 95G1UH amp 92G1UH units are CSA International certified to ANSI Z21 47 and CSA 2 3 standards Building Codes In the USA installation of gas furnaces must conform with local building codes In the absence of local codes units must be installed according to the current National Fuel Gas Code ANSI Z223 1 NFPA 54 The National Fuel Gas Code is available from the American National Standards Institute Inc 11 West 42nd Street New Your NY 10036 In Canada installation must conform with current National Standard of Canada CSA B149 Natural Gas and Propane Installation Codes local plumbing or waste water codes and other applicable local codes In order to ensure proper unit operation in non direct vent applications combustion and ventilation air supply must be provided according to the current National Fuel Gas Code or CSA B149 standard 506501 01 Installed Locations This furnace is CSA International certified for installation clearances to combustible material as listed on the unit nameplate and in the table in Figure 10 Accessibility and service clearances musttake precedence over fire protection clearances NOTE For installation on combustible floors the furnace shall not b
12. PIPE SIZE TO J ACCUMULATION TERMINATION Lh 1 2 13 mm FOAM INSULATION IN UNCONDITIONED SPACE IF REQUIRED 1 2 13 mm FOAM INSULATION IF REQUIRED Use wall support every 24 610 mm Use two supports if extension is greater than 24 but less than 48 Figure 39 NON DIRECT VENT APPLICATION USING EXISTING CHIMNEY SIZE TERMINATION STRAIGHT CUT OR PIPE PER TABLE 6 ANGLE CUT IN DIRECTION OF ROOF SLOPE Minimum 12 305 mm above chimney top plate or average snow SHOULDER OF FITTINGS accumulation PROVIDE SUPPORT OF PIPE ON TOP PLATE SHEET METAL TOP PLATE INSULATE TO FORM SEAL EXTERIOR PORTION OF CHIMNEY NOTE Do not discharge exhaust gases directly into any chimney or vent stack If vertical discharge through an existing unused chimney or stack is required Insert piping inside chimney until the pipe open end is above top of the chimney and terminates as illustrated In any exterior portion of chimney the exhaust vent must be insulated Figure 40 Condensate Piping This unit is designed for either right or left side exit of condensate piping in upflow applications In horizontal applications the condensate trap must extend below the unit An 8 service clearance is required for the condensate trap Refer to Figure 41 for condensate trap locations Issue 1031 506501 01 CONDENSATE TRAP AND PLUG LOCATIONS Unit shown in upflow position Trap same on right side same on
13. Parts List Start Up Checklist Manufactured By Allied Air Enterprises Inc A Lennox International Inc Company 215 Metropolitan Drive West Columbia SC 29170 Page 1 of 48 A95UH A93UH 95G1UH amp 92G1UH Unit Dimensions inches mm 1 NOTE 20 C D 5 Ton size units installed in upflow 3 3 8 EXHAUST AIR applications that require air volumes of 1800 cfm 850 L s or OUTLET greater must have one of the following 1 Single side return air with transition to accommodate 2 51 20 x 25 x 1 in 508 x 635 x 25 mm air filter Single side return air with optional RAB Return Air Base Bottom return air Return air from both sides SUPPLY AIR Bottom and one side return air OPENING 2 Optional External Side Return Air Filter kit is not for use with optional Return Air Base COMBUSTION AIR INTAKE Consider sizing requirements for optional IAQ equipment before cutting side return opening 2 seno SIDE RETURN 23 3 4 AIR FILTER 603 Either Side 25 635 TOP VIEW 1 25 27 3 4 Front Panel 705 9 16 14 19 7 1 9 16 494 14 mm _ 6 9 16 167 2 51 9 229 Either Side 2 OPTIONAL Right GAS PIPING INLET SIDE RETURN 12 5 8 321 TV Either Side AIR FILTER KIT Either Side CONDENSATE Either Side v7 TRAP CONNECTION pa Either Side 6 1 2 165 INLET SK Either Side Either Side 1 1 2 584 38 1 Side Return 14 Air Open
14. Required to Be Vented in the most current edition of NFPA 54 as adopted by the Board and 2 Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling building or structure used in whole or in part for residential purposes MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM PROVIDED When the manufacturer of Product Approved side wall horizontally vented gas fueled equipment provides a venting system design or venting system components with the equipment the instructions provided by the manufacturer for installation of the equipment and the venting system shall include 1 Detailed instructions for the installation of the venting system design or the venting system components and 2 Acomplete parts list for the venting system design or venting system MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When the manufacturer of Product Approved sidewall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases but identifies special venting systems the following requirements shall be satisfied by the manufacturer 1 The referenced special venting system instructions shall be included with the appliance or equipment installation instructions and 2 The special venting systems shall be Product Approved by the Board and the instructions for that system shall include a parts list and de
15. for plastic pipe are flammable liquids and should be kept away from all sources of ignition Do not use excessive amounts of solvent cement when making joints Good ventilation should be maintained to reduce fire hazard and to minimize breathing of solvent vapors Avoid contact of cement with skin and eyes PIPING AND FITTINGS SPECIFICATIONS SDR 21 PVC or SDR 26 PVC Pipe D220 ABS DWV Drain Waste amp Vent amp Fittings PVC DWV Drain Waste amp Vent Pipe amp Fittings ASTM PRIMER amp SOLVENT CEMENT SPECIFICATION Solvent PVC CPVC ABS Purpose Cement For Fittings amp Pipe of the same material D2564 D2235 F493 ABS to PVC or CPVC Transition Solvent CANADA PIPE amp FITTING amp SOLVENT CEMENT amp CPVC Pipe and Fittings gt amp CPVC Pipe and Fittings PVC amp CPVC Solvent Cement ABS to PVC or CPVC Transition Cement Table 2 ULCS636 Page 14 of 48 Issue 1031 A IMPORTANT A95UH1D A93UH1D 95G1UH amp 92G1UH exhaust and intake connections are made of PVC Use PVC primer and solvent cement when using PVC vent pipe When using ABS vent pipe use transitional solvent cement to make connections to the PVC fitting in the unit Use PVC primer and solvent cement or ABS solvent cement meeting ASTM specifications refer to Table 2 As an alternate use all purpose cement to bond ABS PVC or CPVC pi
16. given in Figure 28 or 29 In addition position termination so it is free from any obstructions and 12 above the average snow accumulation At vent termination care must be taken to maintain protective coatings over building materials prolonged exposure to exhaust condensate can destroy protective Page 22 of 48 Issue 1031 coatings It is recommended that the exhaust outlet not be located within 6 feet 1 8 m of a condensing unit because the condensate can damage the painted coating NOTE f winter design temperature is below 32 F 0 C it is recommended that the exhaust piping be insulated with 1 2 13 mm Armaflex or equivalent when run through an unconditional area In extremely cold climate areas with temperature below 20 F 6 7 C it is recommended that 3 4 19 mm Armaflex or equivalent be used Insulation on outside runs of exhaust pipe may be painted or wrapped to protect insulation from deterioration in accordance with the insulation manufacturers recommendation Exhaust pipe insulation may not be necessary in some specific applications NOTE During extremely cold temperatures below approximately 20 F 6 7 C units with long runs of vent pipe through unconditioned space even when insulated may form ice in the exhaust termination that prevents the unit from operating properly Longer run times of at least 5 minutes will alleviate most icing problems Also a heating cable may be installed on exhaust
17. must correct the 4 system as indicated in the general venting requirements section A WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death 7 The following steps shall be followed for each appliance connected to the venting system being placed into operation while all other appliances connected to the venting system are not in operation 1 Seal any unused openings in the common venting system 2 Inspect the venting system for proper size and horizontal pitch Determine that there is no blockage restriction leakage corrosion or other deficiencies which could cause an unsafe condition 506501 01 Issue 1031 Close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building Turn ON clothes dryers and any appliances not connected to the common 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 Close fireplace dampers Follow the lighting instructions Turn ON the appliance that is being inspected Adjust the thermostat so that the appliance operates continuously After the main burner has operated for 5 minutes test for
18. pin plug to the wire harness Reconnect drain tubes between flue collar and cold end header box secure burner assembly to vestibule panel using four existing screws Burners are Self aligning to center of clam shells Reconnect gas supply line to gas valve Reconnect flame rollout switch wires Reconnect sensor wire and reconnect 2 pin plug from ignitor 43 44 45 46 47 Reconnect wires to gas valve Replace the blower compartment access panel Refer to instruction on verifying gas and electrical connections when reestablishing supplies Follow lighting instructions to light and operate furnace for 5 minutes to ensure that heat exchanger is clean and dry and that furnace is operating properly Replace heating compartment access panel Cleaning the Burner Assembly 1 Noor 5 10 11 12 13 14 15 16 17 18 19 Issue 1031 Turn off gas and electrical power to the furnace Remove heating compartment access panel Disconnect the gas supply line from the gas valve Disconnect and label wires from gas valve Disconnect ignitor wiring at 2 circuit plug Disconnect and label wires from rollout switch Disconnect and label flame sensor wire Disconnect and label ground wire from burner manifold assembly Remove four screws that secures burner manifold assembly to vestibule Remove the assembly and make note not to allow ignitor plate to dislodge from the assembly Gently clean
19. the face of the burners using the soft brush attachment on a vacuum cleaner Visually inspect the inside of the burners and crossovers for any blockage caused by foreign matter Remove any blockage Reinstall the burner manifold assembly using the existing four screws Burners are self aligning to center of clam shells Reconnect ground wire Reconnect flame sensor wire Reconnect rollout switch wires Reconnect ignitor wires Reconnect gas valve wires Reconnect gas supply line to gas valve Refer to instructions on verifying gas and electrical connections when re establishing supplies Follow instructions to place furnace in operation Run furnace 5 minutes to ensure burners are clean and operating correctly Replace heating compartment access panel Page 43 of 48 PLANNED SERVICE A service technician should check the following items during an annual inspection Power to the unit must be shut off for safety Fresh air grilles and louvers on the unit and in the room where the furnace is installed Must be open and unobstructed to provide combustion air Burners Must be inspected for rust dirt or signs of water Vent pipe Must be inspected for signs of water cracked damaged or sagging pipe or disconnected joints Unit appearance Must be inspected for rust dirt signs of water burnt or damaged wires or components Blower access door Must be properly in place and provide a seal between the return air and
20. using a commercially available soap solution made specifically for leak detection The furnace must be isolated from the gas supply system by closing its individual manual shut off valve during any pressure testing of the gas supply system at pressures more than or equal to 1 2 psig 3 48 kPa 14 inches w c Manual Main Shut Off Valve will not hold normal test pressure Furnace Isolate 1 8 Gas Vake Plugged Tap Figure 46 A IMPORTANT When testing pressure of gas lines gas valve must be disconnected and isolated See Figure 46 Gas valves can be damaged if subjected to pressures greater than 1 2 psig 3 48 kPa A WARNING FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury death or property damage Never use an open flame to test for gas leaks Check all connections using a commercially available soap solution made specifically for leak detection Some soaps used for leak detection are corrosive to certain metals Carefully rinse piping thoroughly after leak test has been completed Page 31 of 48 AUTOMATIC GAS VALVE with manual shut off valve Left Side Piping Standard MANUAL MAIN SHUT OFF VALVE GROUND JOINT UNION Gas Valve n DRIP LEG Bellows Grommet FIELD PROVIGED AND INSTALLED Right Side Piping Alternate Bellows Grommet MANUAL MAIN SHUT OFF VALVE GROUND J
21. 0 for the USA and current Canadian Electric Code Part 1 CSA standard C22 1 for Canada A green ground wire is provided in the field makeup box NOTE The gas furnace contains electronic components that are polarity sensitive Make sure that the furnace is wired correctly and is properly grounded Accessory Terminals One line voltage EAC 1 4 spade terminal is provided on the furnace control board Any accessory rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral terminals If an accessory rated at greater than one amp is connected to this terminal it is necessary to use an external relay See Figure 54 for control board configuration This terminal is energized when the indoor blower is operating One line voltage HUM 1 4 spade terminal is provided on the furnace control board Any humidifier rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral Issue 1031 506501 01 FURNACE amp CONDENSING UNIT THERMOSTAT DESIGNATIONS Refer to specific thermostat and outdoor unit Thermostat Furnace Condensing Unit POWER R __ R HEAT CONDENSING o ES LOA e esu UA INDOOR BLOWER _COMMON _ Figure 51 A CONDENSING NUNIT COMMON terminals If a humidifier rated at greater than one amp is connected to this termina
22. 067 3950 2750 2200 900 1680 1520 1400 1300 1220 1150 50 8 52 502 111 85 77 87 62 30 53 80 47 57 43 04 39 64 36 81 34 55 32 56 2 1 2 2 469 6300 4350 3520 3000 63 5 67 713 178 39 123 17 99 67 84 95 3 3 068 11000 7700 6250 5300 76 2 77 927 311 48 218 03 176 98 150 07 4 4 026 23000 15800 12800 10900 101 6 102 260 651 27 447 39 362 44 308 64 1 1 4 1 380 1400 950 770 660 58 53 490 460 43 arr eea em eve ase aesa ason asen aso cate 90 73 66 1 57 en 2650 2400 2250 2050 1950 1850 0 0 0 810 7 690 0 620 25 48 22 94 2124 19 54 18 41 17 58 4750 4300 3900 3700 3450 134 50 121 76 110 43 104 77 97 69 9700 8800 8100 7500 7200 6700 274 67 249 18 229 36 212 37 203 88 189 72 NOTE Capacity given in cubic feet of gas per hour kilo liters of gas per hour and based on 0 60 specific gravity gas Table 7 Removal of the Furnace from Common Vent 3 In the event that an existing furnace is removed from a venting system commonly run with separate gas appliances the venting system is likely to be too large to properly vent the remaining attached appliances Conduct the following test while each appliance is operating and the other appliances which are not operating remain connected to the common venting system If the venting system has been installed improperly you
23. 6 If unit will be started immediately upon completion of installation prime trap per procedure outlined in Unit Start Up section 506501 01 Issue 1031 Page 29 of 48 Condensate line must slope downward away from the trap CONDENSATE ASSEMBLY to drain If drain levelis above condensate trap condensate Condensate Drain pump must be used Condensate drain line should be routed 30 PVC Elbow 5Feet Connection In Unit within the conditioned space to avoid freezing of condensate and blockage of drain line If this is not possible a heat cable kit may be used on the condensate trap and line Heating cable kit is available in various lengths 6 ft 1 8 m _ Li Adapt kit no 26K68 24 ft 7 3 m kit no 26K69 and 50 tt 15 2 1 2 slip X 1 2 NPT field provided Maxi mum m kit no 26K70 field provided CONDENSATE TRAP LOCATIONS Unit shown in upflow position with remote trap Drain Trap Assembly furnished Field Provided Vent Min 1 Above Condensate Drain Connection Cap and Clamp To 90 PVC Elbow Clean Out Drain field provided Figure 44 UNIT WITH EVAPORATOR COIL Trap Can Be Installed a Maximum 5 From Furnace Condensate trap and evaporator coil must be drained separately as shown To Drain Piping from furnace must slope down a minimum of 1 4 per ft toward trap i Field Provided Figure 42 A CAUTION Do not use copper tubing or exis
24. INSTALLATION INSTRUCTIONS A95UH A93UH 95G1UH amp 92G1UH Warm Air Gas Furnace Upflow Horizontal Left and Right Air Discharge ad CERTIFIED This manual must be left with the homeowner for future reference This is a safety alert symbol and should never be ignored When you see this symbol on labels or in manuals be alert to the potential for personal injury or death A CAUTION As with any mechanical equipment personal injury can result from contact with sharp sheet metal edges Be careful when you handle this equipment A WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a licensed professional installer or equivalent service agency or the gas supplier TABLE OF CONTENTS Unit Dimensions A95 A93 95G1 92G1UH Parts Arrangement A95 A93 95G1 92G1UH Gas Furnace Shipping and Packing List Safety Information Use of Furnace as a Construction Heater General Combustion Dilution Ventilation Air Setting Equipment Filters Duct System Pipe and Fittings Specifications Joint Cementing Procedure Venting Practices 5065 01 0 1 506501 01 Issue 1031 Vent Piping Guidelines Gas Piping Electrical Unit Start Up Gas Pressure Measurement High Altitude Information Other Unit Adjustments Service Planned Service Failure Codes Repair
25. OINT UNION DRIP LEG Gas Valve In LP propane applications a 4 BIP nipple must be installed to allow clearance for the low inlet pressure switch NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET MANUAL MAIN SHUT OFF VALVE GROUND JOINT UNION Figure 47 Horizontal Applications Possible Gas Piping Configurations Bellows Grommet DRIP LEG Horizontal Applicatlon Right Side Alr Discharge E Gas Valve NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Page 32 of 48 FIELD PROVIDED AND INSTALLED Figure 48 Issue 1031 MANUAL MAIN SHUT OFF nq VALVE Horizontal Application Left Side Air Discharge GROUND JOINT UNION Bellows Grommet DRIP LEG Gas Valve MANUAL MAIN SHUT OFF VALVE GROUND JOINT M UNION DRIP LEG Bellows Grommet 506501 01 GAS PIPE CAPACITY FT HR kL HR Nominal Internal Iron Pipe Size Diameter Length of Pipe Feet m 53 3 4 824 360 250 200 470 151 138 118 110 19 05 20 930 10 19 7 08 5 66 4 81 4 28 3 94 3 34 3 11 1 1 049 680 465 375 320 285 260 240 205 25 4 26 645 19 25 43 17 10 62 9 06 8 07 7 36 6 80 5 80 65 10 20 30 Inches mm Inches mm 3 048 6 096 N NP 1 2 5622 175 120 97 82 12 7 17 799 4 96 3 40 2 75 2 32 4 1 2 4 610 2100 460 1180 990 38 1 40 894 59 46 41 34 33 44 28 03 18 288 21 336 24 384 30 480 pes 3 2 2
26. OTE IF ANY WIRE IN THIS APPLIANCE IS REPLACED IT MUST BE REPLACED WITH WIRE OF LIKE SIZE RATING INSULATION THICKNESS AND TERMINATION FIELD SUPPLIED ACC WIRE 145 IS USED WITH HONEYWELL GAS VALVE WHEN APPLIED IN LP GAS UNITS Page 35 of 48 TYPICAL WIRING DIAGRAM BURNERS O O i O A TM IGNITER 120V ACC SWITCH SENSOR J159 IF USED E ERE P150 INDUCER MOTOR 810 PRIMARY GAS LIMIT S E SIC SWITCH L1 NOTE USE COPPER CONDUCTORS ONLY COMBUSTION AIR PROVING SWITCH 1 ROOM THERMOSTAT INDOOR L BLOWER MOTOR A A UNIT A BLACK 51 ry at L1 EQUIPMENT GROUND SEE BLOWER SPEED CHART P153 _3 P158 P156 4 lt DOOR NEUTRALS J158 1158 ANT BLOWER MOTOR I F HH H 144A _____ _ zB Figure 53 Page 36 of 48 Issue 1031 BLOWER SPEED CHART FACTORY AN SPEED TAPS d Bc RED x aes BROWN BOE F570608 9766508 YELLOW Reo 4 070512 070BP12 YELLOW RED 09015 090 BROWN T D T BLACK BROWN YELLOW RED BROWN BLOWER SPEED SELECTION asc a SPEED i APS BLACK BROWN YELLOW THERMOSTAT HEAT ANTICIPATION SETTINGS 65 HONEYWELL VALVE JACKPLUG CHART JACK PLUG BURNER CONTROL JACKIPLUG INDUCE R IGMITER J P159 JACK PLUG IGNITER WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT M
27. PIPE PER TABLE 6 UNCONDITIONED ATTIC SPACE 1 2 13 mm FOAM 12 305 mm ABOVE INSULATION IN AVERAGE SNOW UNCONDITIONED ACCUMULATION 3 76 mm OR 2 51 mm PVC PROVIDE SUPPORT FOR INTAKE AND EXHAUST LINES Figure 30 506501 01 Issue 1031 FIELD SUPPLIED WALL TERMINATION NOTE FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION SIZE TERMINATION PER TABLE 6 STRAIGHT APPLICATION WALL SUPPORT EXTENDED APPLICATION See venting Table 5 for maximum venting lengths with this arrangement Use wall support every 24 610 mm Use two wall supports if extension is greater than 24 610 mm but less than 48 1219 mm NOTE One wall support must be 6 152 mm from top of each pipe intake and exhaust 3 76 mm 2 51 mm Vent Pipe Vent Pipe A Minimum clearance above grade or average 12 305 mm 12 305 mm snow accumulation 6 152 mm 6 152 mm end of exhaust to 8 203 mm 8 203 mm inlet of intake D Maximum exhaust 6 152 6 152 Figure 31 B Maximum horizontal separation between intake and exhaust C Minimum from E Maximum wall support distance from top of each pipe intake exhaust Page 25 of 48 FIELD SUPPLIED WALL TERMINATION NOTE FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION SIZE TERMINATION PER TABLE 6 A B STRAIGHT APPLICATION
28. SHOWN IN ON POSITION MANIFOLD PRESSURE MANIFOLD PRESSURE GAS VALVE SHOWN IN ON POSITION Figure 55 Page 38 of 48 Issue 1031 9 Replace the upper access panel 10 Turn on all electrical power to the unit 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate follow the instructions Turning Off Gas to Unit and call your service technician or gas supplier Turning Off Gas to Unit 1 Setthe thermostat to the lowest setting 2 Turn off all electrical power to the unit if service is to be performed 3 Remove the upper access panel 4 Move gas valve switch to OFF 5 Replace the upper access panel Failure To Operate If the unit fails to operate check the following Is the thermostat calling for heat Are access panels securely in place Is the main disconnect switch closed Is there a blown fuse or tripped breaker Is the filter dirty or plugged Dirty or plugged filters will cause the limit control to shut the unit off Is gas turned on at the meter Is the manual main shut off valve open Is the internal manual shut off valve open Is the unit ignition system in lockout If the unit locks out again inspect the unit for blockages pi o Heating Sequence Of Operation 1 When thermostat calls for heat combustion air inducer starts 2
29. UST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES NOTE IF ANY WIRE IN THIS APPLIANCE IS REPLACED IT MUST BE REPLACED WITH WIRE OF LIKE SIZE RATING INSULATION THICKNESS AND TERMINATION IMPORTANT TO PREVENT MOTOR BURNOUT NEVER CONNECT MORE THAN ONE LEAD TO ANY ONE CONNECTION PARK TERMINALS ARE UNPOWERED TERMINALS ALL UNUSED MOTOR LEADS MUST BE WIRED TO A PARK TERMINAL ROOM THERMOSTAT FIELD SUPPLIED ACC WIRE DO NOT USE RED LOW SPD MOTOR LEAD FOR HEATING LEAVE ON PARK TERMINAL FOR 070808 070 080C12 090 12 110C16 110CP18 135020 AND 135DP20 145 15 USED WITH HONEYWELL GAS VALVE WHEN APPLIED IN LP GAS UNITS HEAT COOL JUMPER PRESENT ON SOME MODELS 74 DENOTES OPTIONAL COMPONENTS LINE VOLTAGE FIELD INSTALLED CLASS II VOLTAGE FIELD WIRING HEATING UNITS GAS Mew Form No 537344 01 506501 01 INTEGRATED CONTROL Automatic Hot Surface Ignition System 900 0000000 S IUHLITIN Figure 54 Unit Start Up FOR YOUR SAFETY READ BEFORE OPERATING A WARNING Do not use this furnace if any part has been underwater A flood damaged furnace is extremely dangerous Attempts to use the furnace can result in fire or explosion Immediately call a qualified service technician to inspect the furnace and to replace all gas controls control system parts and electrical parts that have been wet or to replace the furnace if deemed neces
30. al clearance to ventilated soffit located above the terminal within Equal to or greater than soffit depth Equal to or greater than soffit depth horizontal distance of 2 feet mm from the center line of the terminal E Clearance to unventilated soffit Equal to or greater than soffit depth Equal to or greater than soffit depth to outside corner No minimum to outside corner No minimum to outside corner a ub NE Clearance to inside corner 3 feet 9m 3 feet 9m EN Clearance to each side of center line ex 3 feet 9m within a height 15 feet 4 5m feet 9m within a height 15 feet 4 5m tended above meter regulator assembly above the meter regulator assembly above the meter regulator assembly Clearance to service regulator 3 feet 9m 3 feet 9m vent outlet J Clearance to non mechanical air 6 inches 152mm for appliances lt 10 000 supply inlet to building or the com 4 feet 1 2 m below or to side of opening Btuh 3kw 12 inches 305mm for bustion air inlet to any other ap 1 foot 30 cm above opening appliances gt 10 000 Btuh 3kw and pliance 100 000 Btuh 30kw 36 inches 9m for appliances gt 100 000 Btuh 30kw K Clearance to mechanical air sup 3 feet 9m above if within 10 feet 6 feet 1 8m ply inlet 3m horizontall L Clearance above paved sidewalk or 7 feet 2 1myF 7 feet 2 1m T paved driveway located on pub
31. at of cement to pipe and while both inside socket surface and end of pipe are wet with cement forcefully insert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn during assembly but not after pipe is fully inserted to distribute cement evenly Do not turn ABS or cellular core pipe NOTE Assembly should be completed within 20 seconds after last application of cement Hammer blows should not be used when inserting pipe 8 After assembly wipe excess cement from pipe at end of fitting socket A properly made join will show a bead around its entire perimeter Any gaps may indicate an improper defective assembly due to insufficient solvent Handle joints carefully until completely set Venting Practices Page 16 of 48 Piping Suspension Guidelines SCHEDULE 40 PVC 5 all other pipe 3 See Table 2 for allowable pipe NOTE solate piping at the point where it exits the outside wall or roof in order to prevent transmission of vibration to the structure Wall Thickness Guidelines 24 maximum 3 4 minimum insulation if required Figure 18 EQUIPMENT IN CONFINED CHIMNEY SPACE ALL AIR FROM INSIDE OR GAS VENT FURNACE OPENINGS To Adjacent If this gas furnace replaces a furnace which was commonly vented with another gas appliance the size of the existing vent pipe for that gas appliance must be checked Without the heat of the original furnace flue products the existing vent pip
32. ater during any phase of construction Very low return air temperature harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit These units may be used for heating of buildings or structures under construction if the following conditions are met e heventsystem must be permanently installed per these installation instructions e Aroom thermostat must control the furnace The use of fixed jumpers that will provide continuous heating is not allowed e The return air duct must be provided and sealed to the furnace e Return air temperature range between 60 F 16 C and 80 F 27 C must be maintained Page 5 of 48 e Air filters must be installed in the system and must be maintained during construction e Air filters must be replaced upon construction completion e The input rate and temperature rise must be set per the furnace rating plate e Onehundred percent 10096 outdoor air must be provided for combustion air requirements during construction Temporary ducting may supply outdoor air to the furnace Do not connect duct directly to the furnace Size the temporary duct following the instructions in section for Combustion Dilution and Ventilation Air in a confined space with air from outside e hefurnace heat exchanger components duct system air filters and evaporator coils must be thoroughly cleaned following final construction cleanup e All furnace operating condition
33. aust pipe side of cabinet within 5 ft of the furnace Figure 22 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN HORIZONTAL DIRECT OR NON DIRECT VENT APPLICATIONS RIGHT HAND DISCHARGE SHOWN 14 is T MAX SIDE VIEW DO NOT transition from smaller to larger pipe in horizonta runs of exhaust pipe Use only the factory supplied trap Trap can be installed within 5 ft of the furnace Trap MUST be installed on left side for left hand discharge Figure 23 506501 01 Issue 1031 Page 19 of 48 TYPICAL AIR INTAKE PIPE CONNECTIONS IN UPFLOW DIRECT VENT APPLICATIONS Pipe size determined in Table 5 TRANSITION AIR INTAKE Use only the factory supplied trap Trap can be installed on either side of cabinet within 5 ft of the furnace Figure 24 TYPICAL INTAKE PIPE CONNECTIONS IN HORIZONTAL DIRECT VENT APPLICATIONS Right Hand Discharge Shown TRANSITION AIR INTAKE Use only the factory supplied trap Trap can be installed within 5 ft of the furnace Trap MUST be installed on left side for left hand discharge Figure 25 Intake Piping Figures 24 through 27 This gas furnace may be installed in either direct vent or non direct vent applications In non direct vent applications when intake air will be drawn into the furnace from the surrounding space the indoor air quality must be considered and guidelines listed in Combustion Dilution and Ventilation Air secti
34. created in the room If a gas appliance is operating in a room with negative pressure the flue products can be pulled back down the vent pipe and into the room This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide gas This raw gas or toxic fumes might then be distributed throughout the house by the furnace duct system Return air can be brought in through the bottom or either side of the furnace If a furnace with bottom return air is installed on a platform make an airtight seal between the bottom of the furnace and the platform to ensure that the unit operates properly and safely Use fiberglass sealing strips caulking or equivalent sealing method between the plenum and the furnace cabinet to ensure a tight seal If a filter is installed size the return air duct to fit the filter frame Pipe amp Fittings Specifications All pipe fittings primer and solvent cement must conform with American National Standard Institute and the American Society for Testing and Materials ANSI ASTM standards The solvent shall be free flowing and contain no lumps undissolved particles or any foreign matter that adversely affects the joint strength or chemical resistance of the cement The cement shall show no gelation stratification or separation that cannot be removed by stirring Refer to Table 2 for approved piping and fitting materials Page 13 of 48 A CAUTION Solvent cements
35. d excessive pressure drop Table 7 list recommended pipe sizes for typical applications NOTE Use two wrenches when connecting gas piping to avoid transferring to the manifold Gas piping must not run in or through air ducts clothes chutes chimneys or gas vents dumb waiters or elevator shafts Center gas line through piping hole Gas line should not touch side of unit See Figures 47 and 48 4 Piping should be sloped 1 4 per 15 feet 6 mm per 5 6 m upward toward the gas meter from the furnace The piping must be supported at proper intervals every 8 to 10 feet 2 44 to 3 05 m using suitable hangers or straps Install a drip leg in vertical pipe runs to serve as a trap for sediment or condensate 5 A1 8 plugged tap or pressure post is located on the gas valve to facilitate test gauge connection See Figure 55 506501 01 Issue 1031 6 In some localities codes may require installation of a manual main shut off valve and union furnished by installer external to the unit Union must be of the ground joint type A IMPORTANT Compounds used on threaded joints of gas piping must be resistant to the actions of liquified petroleum gases Leak Check After gas piping is completed carefully check all piping connections factory and field installed for gas leaks Use a leak detecting solution or other preferred means Never use an open flame to test fro gas leaks Check all connections
36. e condition Tothe extent that it is practical close all building doors and windows and all doors between the space in which the appliances connected to the venting system are located and other spaces of the building 4 Close fireplace dampers 5 Turn on clothes dryers and any appliances 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 Page 40 of 48 Issue 1031 6 Follow the lighting instruction to place the appliance being inspected into operation Adjust thermostat so appliance will operate continuously 7 Use the flame of match or candle to test for spillage of flue gases at the draft hood relief opening after 5 minutes of main burner operation 8 If improper venting is observed during any of the above tests the venting system must be corrected or sufficient combustion makeup air must be provided The venting system should be re sized to approach the minimum size as determined by using the appropriate tables in appendix G in the current standards of the National Fuel Gas Code ANSI Z223 1 NPFA 54 in the U S A and the appropriate Natural Gas and Propane appliances venting sizing tables in the current standard of the CSA B149 Natural Gas and Propane Installation Codes in Canada 9 After determining that each appliance remaining connected to the common venting system properly vents whe
37. e field provided materials and the factory provided air intake screen to route the intake piping as shown in figure 26 or 27 Maintain a minimum clearance of 3 76 mm around the air intake opening The air intake opening with the protective screen should always be directed forward or to either side in the upflow position and either straight out or downward in the horizontal position The air intake piping must not terminate too close to the flooring or a platform Ensure that the intake air inlet will not be obstructed by loose insulation or other items that may clog the debris screen 2 Usea sheet metal screw to secure the intake pipe to the connector if desired General Guidelines for Vent Terminations In Non Direct Vent applications combustion air is taken from indoors and the flue gases are discharged to the outdoors The furnace is then classified as a non direct vent Category IV gas furnace In Direct Vent applications combustion air is taken from outdoors and the flue gases are discharged to the outdoors The furnace is then classified as a direct vent Category IV gas furnace In both Non Direct Vent and Direct Vent applications the vent termination is limited by local building codes In the absence of local codes refer to the current National Fuel Gas Code ANSI Z223 1 NFPA 54 in U S A and current CSA B149 Natural Gas and Propane Installation Codes in Canada for details Position termination according to location
38. e installed directly on carpeting tile or other combustible material other than wood flooring For installation in a residential garage the furnace must be installed so that the burner s and the ignition source are located no less than 18 inches 457 mm above the floor The furnace must be located or protected to avoid physical damage by vehicles When a furnace is installed in a public garage hangar or other building that has a hazardous atmosphere the furnace must be installed according to recommended good practice requirements and current National Fuel Gas Code or CSA B149 standards Note Furnace must be adjusted to obtain a temperature rise within the range specified on the unit nameplate Failure to do so may cause erratic limit operation and premature heat exchanger failure This furnace must be installed so that its electrical components are protected from water Installed in Combination with a Cooling Coil When this furnace is used with cooling units Figure 3 it shall be installed in parallel with or on the upstream side of cooling units to avoid condensation in the heating compartment With a parallel flow arrangement a damper or other means to control the flow of air must adequately prevent chilled air from entering the furnace If the damper is manually operated it must be equipped to prevent operation of either the heating or the cooling unit unless it is in the full HEAT or COOL setting When installed thi
39. e is probably oversized for the single water heater or other appliance The vent should be checked for proper draw with the remaining appliance Figure 19 Exhaust Piping Figures 22 and 23 1 areas where piping penetrates joist or interior walls hole must be large enough to allow clearance on all sides of pipe through center of hole using a hanger When furnace is installed in a residence where unit is shut down for an extended period of time such as a vacation home make provisions for draining condensate collection from trap and lines Route piping to outside of structure Continue with installation following instructions given in piping termination section A CAUTION Do not discharge exhaust into an existing stack or stack that also serves another gas appliance If vertical discharge through an existing unused stack is required insert PVC pipe inside the stack until the end is even with the top or outlet end of the metal stack A CAUTION The exhaust vent pipe operates under positive pressure and must be completely sealed to prevent leakage of combustion products into the living space Issue 1031 506501 01 Vent Piping Guidelines This gas furnace can be installed as either a Non Direct Vent or a Direct Vent gas central furnace NOTE In non Direct Vent installations combustion air is taken from indoors and flue gases are discharged outdoors In Direct Vent installations combustion a
40. es 305 mm for 2 PVC and 20 508 mm for 3 76 mm PVC beyond the outside wall See Figure 38 Page 27 of 48 Page 28 of 48 NON DIRECT VENT ROOF TERMINATION KIT 15F75 or 44J41 SIZE TERMINATION PIPE PER TABLE 6 12 305mm ABOVE AVE SNOW 1 2 13mm FOAM ACCUMULATION INSULATION 3 76mm OR 2 51mm UNCONDITIONED ATTIC SPACE PROVIDE SUPPORT FOR EXHAUST LINES Figure 37 NON DIRECT VENT FIELD SUPPLIED WALL TERMINATION 12 305 mm MAX for 2 51 mm 20 508 mm MAX for 3 76 mm FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION EM ug EFFEEF dc _ PVC REDUCER SIZE TERMINATION 12 Min PIPE PER TABLE 6 305 mm Above Grade or average snow accumulation Figure 38 If exhaust piping must be run up a sidewall to position above snow accumulation or other obstructions piping must be supported every 24 610 mm as shown in Figure 39 When exhaust piping must be run up an outside wall any reduction in exhaust pipe size must be done after the final elbow NON DIRECT VENT FIELD SUPPLIED WALL TERMINATION EXTENDED OR 15F74 WALL TERMINATION VENT PIPE EXTENDED 12 305 mm for 2 51 mm UNCONDITIONED 20 504 mm MAX for 3 76 mm SPACE 6 152 mm TERMINATION PIPE PER TABLE 6 FIELD PROVIDED REDUCER MAY BE 12 305 mm REQUIRED TO ABOVE GRADE OR ADAPT LARGER AVERAGE SNOW VENT
41. es adjacent rooms which are not separated by a door Though an area may appear to be unconfined it might be necessary to bring in outdoor air for combustion if the structure does not provide enough air by 506501 01 Issue 1031 infiltration If the furnace is located in a building of tight construction with weather stripping and caulking around the windows and doors follow the procedures in the Air from Outside section Confined Space A confined space is an area with a volume less than 50 cubic feet 1 42 m per 1 000 Btu 29 kW per hour of the combined input rating of all appliances installed in that space This definition includes furnace closets or small equipment rooms When the furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace the return air must be handled by ducts which are sealed to the furnace casing and which terminate outside the space containing the furnace This is especially important when the furnace is mounted on a platform in a confined space such as a closet or small equipment room Even a small leak around the base of the unit at the platform or at the return air duct connection can cause a potentially dangerous negative pressure condition Air for combustion and ventilation can be brought into the confined space either from inside the building or from outside Air from Inside If the confined space that houses the furnace adjoin
42. etting of 120 seconds The fan OFF delay affects comfort and is adjustable to satisfy individual applications Adjustthe fan OFF delay to achieve a supply airtemperature between 90 and 110 F at the moment that the blower is de energized Longer OFF delay settings provide lower return air temperatures shorter settings provide higher return air temperatures See Figure 56 HEAT FAN OFF TIME SECONDS HEAT OFF PIN PIN2 60 PIN2 90 PIN 3 PIN 4 PIN 4 PIN 5 NO JUMPER To adjust fan off timing reposition jumper across pins to achieve desired setting Figure 56 506501 01 Issue 1031 Thermostat Heat Anticipation Set the heat anticipator setting if adjustable according to the amp draw listed on the wiring diagram that is attached to the unit Electrical 1 Check all wiring for loose connections 2 Check for the correct voltage at the furnace furnace operating 3 Check amp draw on the blower motor Motor Nameplate Actual Blower Speeds Follow the steps below to change the blower speeds 1 Turn off electrical power to furnace 2 Remove blower access panel 3 Disconnect existing speed tap at control board speed terminal NOTE of any unused motor leads must be insulated 4 Place unused blower speed tap on integrated control PARK terminal or insulate 5 Refer to blower speed selection chart on unit wiring diagram for desired heating or cooling speed See B
43. ews that secures flue collar in place Remove flue collar It may be necessary to cut the exiting exhaust pipe for removal of the fitting 12 Loosen two clamps from flexible no hub exhaust collar 13 Disconnect the 2 pin plug from the combustion air inducer Remove screws which secure combustion air inducer to collector box Remove combustion air inducer assembly Remove ground wire 14 Mark and disconnect all combustion air pressure tubing from cold end header collector box 15 Mark and remove wires from pressure switch Remove pressure switch Keep tubing attached to pressure switch 16 Remove electrical junction box from the side of the furnace 17 Remove blower access panel 18 Mark and disconnect any remaining wiring to heating compartment components Disengage strain relief bushing and pull wiring and bushing through the hole in the blower deck 19 Remove the primary limit from the vestibule panel 20 Remove top cap screws to allow top cap to be tilted upward to allow clearance for removing heat exchanger 506501 01 21 22 23 24 29 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 506501 01 Remove two screws from the front cabinet flange atthe blower deck Spread cabinet sides slightly to allow clearance for removal of heat exchanger Remove screws along vestibule sides and bottom which secure vestibule panel and heat exchanger assembly to cab
44. for appliances Btuh 3kw 12 inches 305mm for gt 10 000 Btuh 3kw and 50 000 Btuh appliances gt 10 000 Btuh 3kw and 15 kw 12 inches 305mm for ap 100 000 Btuh 30kw 36 inches 9m pliances gt 50 000 Btuh 15kw for appliances gt 100 000 Btuh 30kw C Clearance to permanently 42 12 closed window ee Vertical clearance to ventilated soffit located above the terminal within a Equal to or greater than soffit depth Equal to or greater than soffit depth horizontal distance of 2 feet mm from the center line of the terminal Clearance to unventilated soffit Equal to or greater than soffit depth Equal to or greater than soffit depth Clearance to outside corner No minimum to outside corner No minimum to outside corner Clearance to inside corner 3 feet 9m 3 feet 9m Clearance to each side of center line ex feet 9m within a height 15 feet 4 5m feet 9m within a height 15 feet 4 5m tended above meter regulator assembly above the meter regulator assembly above the meter regulator assembly Clearance to service regulator 3 feet 9m 3 feet 9m vent outlet MM J Clearance to non mechanical air 6 inches 152mm for appliances lt 10 000 6 inches 152mm for appliances lt 10 000 supply inlet to building or the com Btuh 3kw 9 inches mm for appliances Btuh 3kw 12 inches 305mm for bustion air inlet to any other ap gt 10 000 Bt
45. glass Wool Disturbing the insulation in this product during installation maintenance or repair will expose you to fiberglass wool Breathing this may cause lung cancer Fiberglass wool is known to the State of California to Cause cancer Fiberglass wool may also cause respiratory skin and eye irritation To reduce exposure to this substance or for further information consult material safety data sheets available from address shown below or contact your supervisor Allied Air Enterprises Inc 215 Metropolitan Drive West Columbia SC 29170 Combustion Dilution amp Ventilation Air If this unit ts installed as a Non Direct Vent Furnace follow the guidelines in this section NOTE n Non Direct Vent Installations combustion air is taken from indoors and flue gases are discharged outdoors A WARNING Insufficient combustion air can cause headaches nausea dizziness or asphyxiation It will also cause excess water in the heat exchanger resulting in rusting and premature heat exchanger failure Excessive exposure to contaminated combustion air will result in safety and performance related problems Avoid exposure to the following substances in the combustion air Supply Permanent wave solutions Chlorinated waxes and cleaners Chlorine base swimming pool chemicals Water softening chemicals De icing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solvents such as perchloroethylene
46. harged to outdoors Intake and exhaust pipes may be routed either horizontally through and outside wall or vertically through the roof In attic or closet installations vertical termination through the roof is preferred Figures 30 through 40 show typical terminations 1 Exhaust and intake exits must be in same pressure zone Do not exit one through the roof and one on the side Also do not exit the intake on one side and the exhaust on another side of the house or structure 2 Intake and exhaust pipes should be placed as close together as possible at termination end refer to illustrations Maximum separation is 3 76 mm on roof terminations and 6 152 mm on sidewall terminations 3 Onroofterminations the intake piping should terminate straight down using two 90 elbows See Figure 30 4 Exhaust piping must terminate straight out or up as shown Areducer may be required on the exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the intake piping See Table 6 EXHAUST PIPE TERMINATION SIZE REDUCTION Termination MODEL Exhaust Pipe Size 045 and070_ 3 oo 2 51 mm 2 1 2 64 mm 76 mm or 4 102 St 3 76 mm or 4 102 mm Table 6 NOTE Care must be taken to avoid recirculation of exhaust back into intake pipe DIRECT VENT ROOF TERMINATION KIT 15F75 OR 44J41 3 76 mm Max 8 203 mm MIN Inches mm SIZE TERMINATION
47. her altitudes Refer to Table 9 for proper manifold pressure settings at varying altitudes Table 10 lists required pressure switch changes and conversion kits at varying altitudes The combustion air pressure switches are factory set and require no adjustment Manifold Pressure Outlet Inches w c Altitude feet 0 4501 5501 6501 7501 4500 5500 6500 7500 10 000 Call Call Tech Tech Tech Service Service Service Service L P Call Call Call Tech Tech Tech Gas Service Service Service Service Table 9 NOTE A natural to L P propane gas changeover kit is necessary to convert this unit Refer to the literature kit installation instruction for the conversion procedure Conversion Kit and Pressure Switch Requirements at Varying Altitudes High Altitude Pressure LPG Propane Kit Switch Kit 7501 10 000 ft 4501 7500 ft Technical Service Technical Service 7501 10 000 ft 0 7500 tt 7501 10 000 ft Call Technical Service Pressure switch is factory set No adjustment necessary All models use the factory installed pressure switch from 0 4500 feet 0 1370 m Table 10 506501 01 Issue 1031 Page 39 of 48 Testing for Proper Venting and Sufficient Combustion Air for Non Direct Vent Applications A WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation co
48. hey shall be of the same cross sectional area as the free area of the openings to which they connect The minimum dimension of rectangular air ducts shall be no less than 3 inches 75 mm In calculating free area the blocking effect of louvers grilles or screens must be considered If the design and free area of protective covering is not known for calculating the size opening required it may be assumed that wood louvers will have 20 Page 8 of 48 Issue 1031 to 25 percent free area and metal louvers and grilles will have 60 to 75 percent free area Louvers and grilles must be fixed in the open position or interlocked with the equipment so that they are opened automatically during equipment operation EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE Inlet Air through Ventilated Attic ol ROOF TERMINATED EXHAUST PIPE VENTILATION LOUVERS Each end of attic SIDE WALL INLET AIR TERMINATED Ends 12 above EXHAUST PIPE bottom ALTERNATE LOCATION I I I T I T NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 mm per 1 17 kW per hour of the total input rating of all equipment in the enclosure Figure 6 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE P d ROOF TERMINATED EXHAUST PIPE OUTLET AIR age SIDE WALL TERMINATED EXHAUST PIPE ALTERNATE LOCATION NOTE Each air duct opening shall have a free area of a
49. inet Remove two screws from blower rails which secure bottom heat exchanger flange Remove heat exchanger from furnace cabinet Back wash heat exchanger with soapy water solution or steam If steam is used it must be below 275 F 135 C Thoroughly rinse and drain the heat exchanger Soap solutions can be corrosive Take care to rinse entire assembly Reinstall heat exchanger into cabinet making sure that the rear baffle ofthe heat exchanger assembly is nested under the support located at the rear of the cabinet Remove the indoor blower to view this area through the blower opening He secure the supporting screws along the vestibule sides Reinstall blower assembly and reinstall two screws through rails Reinstall cabinet screws on front flange at blower deck Reinstall screws securing top cap Reinstall the primary limit on the vestibule panel Route heating component wiring through hole in blower deck and reinsert strain relief bushing Reinstall pressure switch and reconnect pressure switch wiring Carefully connect combustion air pressure switch hosing from pressure switch to proper stubs on cold end header collector box Reinstall 1 2 NPT if removed in the cold end header box Reconnect drain tubing to collector box Reinstall condensate trap pipe Reconnect condensate drain line to the condensate trap Reinstall electrical junction box Reinstall the combustion air inducer and flexible no hub connector Reconnect the 2
50. ing 856 Either Side m av E 23 1 2 83 597 Bottom Return Air Opening FRONT VIEW SIDE VIEW i 1 Bottom Return Air Opening Model A95UH A93UH 95G1UH 92G1UH Page 2 of 48 Issue 1031 506501 01 EXPANDED VIEW TOP CAP FLEXIBLE NO HUB BURNER BOX EXHAUST COLLAR ASSEMBLY HEAT EXCHANGER MANIFOLD ASSEMBLY GAS VALVE FLUE COLLAR COMBUSTION AIR INDUCER ACCESS PANEL CABINET SIGHT GLASS BAG ASSEMBLIES PRIMARY LIMIT COMBUSTION AIR PRESSURE PROVE SWITCH BLOWER ASSEMBLY BLOWER ACCESS DOOR COLD END HEADER BOX Figure 1 506501 01 Issue 1031 Page 3 of 48 A95UH A93UH 95G1UH amp 92G1UH Gas Furnace The A95UH A93UH 95G1UH amp 92G1UH Category IV gas furnace is shipped ready for installation in the upflow or horizontal position The furnace is shipped with the bottom panel in place The bottom panel must be removed if the unit is to be installed in horizontal or upflow applications with bottom return air The A95UH A93UH 95G1UH amp 92G1UH can be installed as either a Direct Vent or a Non Direct Vent gas central furnace The furnace is equipped for installation in natural gas applications A conversion kit ordered separately is required for use in propane LP gas applications NOTE n Direct Vent installations combustion air is taken from outdoors and flue gases are discharged outdoors In Non Direct Vent installations combustion air is
51. ir is taken from outdoors and flue gases are discharged outdoors Intake and exhaust pipe sizing Size pipe according to Tables 4 and 5 Table 4 lists the minimum vent pipe lengths permitted Table 5 lists the maximum pipe lengths permitted Regardless of the diameter of pipe used the standard roof and wall terminations described in section Exhaust Piping Terminations should be used Exhaust vent termination pipe is sized to optimize the velocity of the exhaust gas as it exits the termination Refer to Table 6 In some applications which permit the use of several different sizes of vent pipe a combination vent pipe may be used Contact Allied Air Technical Service for assistance in sizing vent pipe in these applications NOTE The exhaust collar on all models is sized to accommodate 2 Schedule 40 vent pipe When vent pipe which is larger than 2 must be used in an upflow application a transition must be applied at the exhaust collar in order to properly step to the larger diameter vent pipe Contact Allied Air Technical Service for more information concerning sizing of vent systems which include multiple pipe sizes EXHAUST PIPE 12 max of straight pipe 9 pude Min Horizontal Application NOTE horizontal runs of exhaust pipe must slope back toward unit A minimum of 1 4 6 mm drop for each 12 805 mm of horizontal run is mandatory for drainage NOTE Exhaust pipe MUST be glued t
52. kW per total input rating of all equipment in the enclosure See Figure 5 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE Inlet Air from Crawl Space and Outlet Air to Ventilated Attic VENTILATION LOUVERS Each end of attic ROOF TERMINATED EXHAUST PIPE SIDE WALL TERMINATED VENTILATION EXHAUST PIPE LOUVERS ALTERNATE For unheated LOCATION crawl space NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 per 1 17 kW per hour of the total input rating of all equipment in the enclosure Figure 5 If air from outside is brought in for combustion and ventilation the confined space must have two permanent openings One opening shall be within 12 inches 805 mm of the top of the enclosure and one opening within 12 inches 805 mm of the bottom These openings must communicate directly or by ducts with the outdoors or spaces crawl or attic that freely communicate with the outdoors or indirectly through vertical ducts Each opening shall have a minimum free area of 1 square inch 645 per 4 000 Btu 1 17 kW per hour of total input rating of all equipment in the enclosure see Figures 5 and 6 When communicating with the outdoors through horizontal ducts each opening shall have a minimum free area of 1 square inch 645 mm 2 000 Btu 56 kW per total input rating of all equipment in the enclosure See Figure 7 When ducts are used t
53. l it is necessary to use an external relay See Figure 54 for control board configuration This terminal is energized in the heating mode when the combustion air inducer is operating Install the room thermostat according to the instructions provided with the thermostat See Figure 51 for thermostat designations If the furnace is being matched with a help pump refer to the FM21 installation instruction or appropriate dual fuel thermostat instructions Indoor Blower Speeds 1 When the thermostat is set to FAN ON the indoor blower will run continuously on the heating speed when there is no cooling or heating demand When the furnace is running in the heating mode the indoor blower will run on the heating speed When there is a cooling demand the indoor blower will run on the cooling speed Generator Use Voltage Requirements The furnace requires 120 volts 1096 Range 180 volts to 132 volts The furnace operates at 60 Hz 5 Range 57 Hz to 63 Hz The furnace integrated control requires both polarity and proper ground Both polarity and proper grounding should be checked before attempting to operate the furnace on either permanent or temporary power Generator should have a wave form distortion of less than 5 RHD TYPICAL FIELD WIRING DIAGRAM Figure 52 506501 01 Issue 1031 WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES N
54. leaks of flue gases at the draft hood relief opening Use the flame of a match or candle After determining that each appliance connected to the common venting system is venting properly step 3 return all doors windows exhaust fans fireplace dampers and any other gas burning appliances to their previous mode of operation If a venting problem is found during any of the preceding tests the common venting system must be modified to correct the problems Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in Appendix G These are in the current standards of the National Fuel Gas Code ANSI 2223 1 Page 33 of 48 Electrical ELECTROSTATIC DISCHARGE ESD Precautions and Procedures A CAUTION Electrostatic discharge can affect electronic components Take precautions during furnace installation and service to protect the furnace s electronic controls Precautions will help to avoid control exposure to electrostatic discharge by putting the furnace the control and the technician at the same electrostatic potential Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface such as the gas valve or blower deck before performing any service procedure INTERIOR MAKE UP BOX INSTALLATION Left Side Make Up Box Figure 49 INTERIOR MAKE UP BOX INSTALLATION Remove and Relocate Plug to Unused Opening on Left Side Figu
55. left side NOTE In upflow applications where side return air filter is installed on same side as the condensate trap filter rack MUST be installed beyond condensate trap or trap must be relocated to avoid interference Figure 41 NOTE f necessary the condensate trap may be installed up to 5 away from the furnace Use PVC pipe to connect trap to furnace condensate outlet Piping from furnace must slope down a minimum of 1 4 per ft toward trap 1 Determine which side condensate piping will exit the unit location of trap field provided fittings and length of PVC pipe required to reach available drain 2 Remove plug Figure 41 from the cold end header box at the appropriate location on the side of the unit Install field provided 1 2 NPT male fitting into cold end header box Use Teflon tape or appropriate pipe dope 3 Install the cap over the clean out opening at the base of the trap Secure with clamp See Figure 44 4 Install drain trap using appropriate PVC fittings glue all joints Glue the provided drain trap as shown in Figure 44 Route the condensate line to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain 5 Installed field provided vent on trap assembly as shown in Figures 42 through 45 Trap must extend at least 1 above the furnace condensate drain connection in upflow applications and 4 1 2 above the bottom of the cabinet in horizontal applications
56. lic property Clearance under veranda porch 12 inches 305mm t 12 inches 305mm deck or balcon 1 In accordance with the current ANSI Z223 1 NFPA 54 Natural Fuel Gas Code For clearances not specified in ANSI 2223 UNFPA 54 or CSA B149 1 2 n accordance with the current CSA B 149 1 Natural Gas and Propane Installation Code clearance will be in accordance with local installation codes and the re T A vent shall not terminate directly above a sidewalk or paved driveway that is located quram gae eee eae moss nte ISO QU ions between two single family dwellings and serves both dwellings Permitted only if veranda porch deck or balcony is fully open a minimum of two sides beneath the floor Allied Air recommends avoiding this location if possible Figure 28 506501 01 Issue 1031 Page 23 of 48 VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATiONS IN THE USA AND CANADA INSIDE CORNER DETAIL W Y Fixed Closed KCK KO KG y AREA WHERE TERMINAL VENT TERMINAL AIR SUPPLY INLET IS NOT PERMITTED US Installations Canadian Installations2 Clearance above grade veranda 12 inches 305mm or 12 in 305mm 12 inches 305mm or 12 in 305mm porch deck or balcony above average snow accumulation above average snow accumulation B Clearance to window or 6 inches 152mm for appliances 10 000 6 inches 152mm for appliances 10 000 door that may be opened Btuh 3kw 9 inches mm
57. lower performance data beginning on the next page 6 Connect selected speed tap at control board speed terminal 7 Re secure blower access panel 8 Turn on electrical power to furnace 9 Recheck temperature rise Electronic Ignition The integrated control has an added feature of an internal Watchguard control The feature serves as an automatic reset device for integrated control lockout caused by ignition failure This type of lockout is usually due to low gas line pressure After one hour of continuous thermostat demand for heat the Watchguard will break and remake thermostat demand to the furnace and automatically reset the integrated control to begin the ignition sequence Exhaust and Air Intake Pipe 1 Check exhaust and air intake connections for tightness and to make sure there is no blockage 2 ls pressure switch closed Obstructed exhaust pipe will cause unit to shut off at pressure switch Check termination for blockages 3 Obstructed pipe or termination may cause rollout switches to open Reset manual flame rollout switches on burner box assembly if necessary Page 41 of 48 Service A WARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation serious injury death or property damage Improper servicing could result in dangerous operation serious injury death or property damage Before servicing disconnect all elec
58. m The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown Side return air openings must be cut in the field There are cutting guides stenciled on the cabinet for the side return air opening The size of the opening must not extend beyond the markings on the furnace cabinet SIDE VIEW 2 To minimize pressure drop the largest opening height possible up to 14 inches is preferred Figure 12 panel Once the bottom panel has been removed reinstall Removing the Bottom Panel the bottom cap See Figure 13 Horizontal Applications A WARNING Do not install the furnace on its front or its back See Figure 14 BOTTOM CAP BOTTOM PANEL Figure 13 Removing the Bottom Panel Remove the two screws that secure the bottom cap to the furnace Pivot the bottom cap down to release the bottom 506501 01 Issue 1031 Figure 14 This furnace can be installed in horizontal applications with either right or left hand air discharge Refer to Figure 15 for clearances in horizontal applications Page 11 of 48 Horizontal Application Installation Clearances Right Hand Discharge Left End Air i Flow Bottom Floor Left Hand Discharge Right End Front clearance in alcove installation must be 24 in 610 mm Maintain a minimum of 24 in 610 mm for front service access An 8 service clearance must be maintained below the unit to provide for se
59. m A door must never be used as a portion of the return air duct system The base must provide a stable support and an airtight seal to the furnace Allow absolutely no sagging cracks gaps etc For reason should return and supply air duct systems ever be connected to or from other heating devices such as a fireplace or stove etc Fire explosion carbon monoxide poisoning personal injury and or property damage could result Installation Clearances p Left Side 27 Right Side Front clearance in alcove installation must be 24 in 610 mm Maintain a minimum of 24 in 610 mm for front service access T Allow proper clearances to accommodate condensate trap and vent pipe installation For installations on a combustible floor do not install the furnace directly on carpeting tile or other combustible materials other than wood flooring Figure 10 Page 10 of 48 Issue 1031 Return Air Guidlines Return air can be brought in through the bottom or either side of the furnace installed in an upflow application Ifthe furnace is installed on a platform with bottom return make an airtight seal between the bottom of the furnace and the platform to ensure that the furnace operates properly and safely The furnace is equipped with a removable bottom panel to facilitate installation Markings are provided on both sides of the furnace cabinet for installations that require side return air Cut the fu
60. n tested as indicated in step 3 return doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous condition of use 506501 01 Other Unit Adjustments Primary Limit The primary limit is located on the heating compartment vestibule panel This limit is factory set and requires no adjustment Flame Rollout Switches Two These manually reset switches are located on the front of the burner box Pressure Switch The pressure switch is located in the heating compartment on the cold end header box This switch checks for proper combustion air inducer operation before allowing ignition trial The switch is factory set and must not be adjusted Temperature Rise After the furnace has been started and supply and return air temperatures have been allowed to stabilize check the temperature rise If necessary adjust the blower speed to maintain the temperature rise within the range shown on the unit nameplate Increase the blower speed to decrease the temperature Decrease the blower speed to increase the temperature rise Failure to adjustthe temperature rise may cause erratic limit operation Fan Control The fan ON time of 30 seconds is not adjustable The fan OFF delay amount of time that the blower operates after the heat demand has been satisfied may be adjusted by changing the jumper position across the five pins on the integrated control The unit is shipped with a factory heat fan OFF s
61. o furnace exhaust fittings NOTE Exhaust piping should be checked carefully to make sure there are no sages or low spots Figure 20 A IMPORTANT Do not use screens or perforated metal in exhaust or intake terminations Doing so will cause freeze ups and may block the terminations 506501 01 Issue 1031 Use the following steps to correctly size vent pipe diameter 045 070 090 110 or 135 btuh Furnace capacity Standard or Concentric 2 Which termination See Table 3 Which needs Intake or most elbows exhaust 4 How many 5 Desired pipe size 6 What is the altitude Use Table 5 to find max pipe length MINIMUM VENT PIPE LENGTHS UH 95G1UH amp 93G1UH AS95UH A93 efr Min Vent Length 15 ft or ici 5 ft plus 2 elbows or 10 ft plus 1 elbow Any approved termination may be added to the minimum length listed This gas furnace must have 3 to 2 reducing ell supplied or field replacement Canadian kit installed directly into unit flue collar Table 4 Page 17 of 48 Maximum Allowable Vent Length Standard Termination at Elevation 0 to 4 500 109 104 e cy m a i T E e e A q T a c glefe kai c S gt ei iwi lIveij liuwl lI w e boa Ezi kad ESI ESI p G 113 108 17 12 17 12 2 1 2 110 105 100 Pipe Size
62. on must be followed Page 20 of 48 Issue 1031 Follow the next two steps when installing the unit in Direct Vent applications where combustion air is taken from outdoors and flue gases are discharged outdoors The provided air intake screen must not be used in direct vent applications outdoors 506501 01 1 Use transition solvent cement or a sheet metal screw to secure the intake pipe to the inlet air connector 2 Route piping to outside of structure Continue with installation following instructions given in general guide lines for piping terminations and in intake and exhaust piping terminations for direct vent sections Refer to Table 5 for pipe sizes TYPICAL AIR INTAKE PIPE CONNECTIONS HORIZONTAL NON DIRECT VENT APPLICATIONS Horizontal Right Hand Air Discharge Application Shown TYPICAL AIR INTAKE PIPE CONNECTIONS UPFLOW NON DIRECT VENT APPLICATIONS INTAKE DEBRIS SCREEN Provided INTAKE DEBRIS SCREEN Provided NOTE Debris screen may be positioned straight out preferred or with an elbow rotated to face down Figure 27 NOTE Debris screen and elbow may be rotated so that screen may be positioned to face forward or to either side Figure 26 506501 01 Issue 1031 Page 21 of 48 Follow the next two steps when installing the unit Non Direct Vent applications where combustion air is taken from indoors and flue gases are discharged outdoors 1 Us
63. pair parts are available through Allied Air dealers When ordering parts include the complete furnace model number listed on the CSA nameplate All service must be performed by a licensed professional installer or equivalent service agency or gas supplier Cabinet Parts Upper Access Panel Blower Access Panel Top Cap Control Panel Parts Transformer Integrated Control Board Door Interlock Switch Blower Parts Blower Wheel Motor Motor Mounting Frame Motor Capacitor Blower Housing Cutoff Plate 506501 01 Heating Parts Issue 1031 Flame Sensor Heat Exchanger Assembly Gas Manifold Combustion Air Inducer Gas Valve Main Burner Cluster Main Burner Orifices Pressure Switch Ignitor Primary Limit Control Flame Rollout Switches Page 45 of 48 Start Up amp Performance Check List UNIT SET UP Furnace Model Number Serial Number E N TT lt Line Voltage lt gt E 1 GAS SUPPLY _ Natural Gas _ LP Propane Gas C Piping Connections Tight Leak Tested Gas Supply Pressure VAR 49 48 09 49 9 A7 AT AV AP AP AF MEAT INTAKE EXHAUST PIPE All Joints Primed and Glued C Terminations Installed Property C Horizontal Pipes Sloped if applicable Condensate Trap Primed Line Sloped Pipes Supported Heat Cable Installed and Operable if applicable Page 46 of 48 Issue 1031 1 Supply Line Pressure w c SUPPLY AIR Fiter
64. pe when using fittings and pipe made of the same materials Use transition solvent cement when bonding ABS to either PVC or CPVC Low temperature solvent cement is recommended during cooler weather Metal or plastic strapping may be used for vent pipe hangers Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket Canadian Applications Only Pipe fittings primer and solvent cement used to vent exhaust this appliance must be certified to ULC S636 and supplied by a single manufacturer as part of an approved vent exhaust system When bonding the vent system to the furnace use ULC S636 approved One Step Transition Cement to bond the pipe to the flue collar or to bond the 90 elbow or reducing 90 elbow to the flue collar In addition the first three feet of vent pipe from the furnace flue collar must be accessible for inspection 506501 01 OUTDOOR TERMINATION KITS USAGE STANDARD CONCENTRIC Outdoor Outdoor Exhaust Exhaust AS5UH Accelerator Accelerator A93UH Dia X Dia X 95 651UH Length Length 9761UH i ii i 1 1 2 2 3 Concentric Concentric Concentric Kit Kit Kit 60L46 or 44 VVO3T Requires field provided and installed 1 1 2 exhaust accelerator Kit 51W 11 is provided with a 1 1 2 accelerator which must be used for ali 2 and 2 1 2 PVC installations T Termination kits 44W92
65. piping and termination to prevent freeze ups Heating cable installation kits are available see unit specification sheets for part numbers A IMPORTANT Do not use screens or perforated metal in exhaust terminations Doing so will cause freeze ups and may block the terminations A IMPORTANT For Canadian Installations Only In accordance to CSA International B149 installation codes the minimum allowed distance between the combustion air intake inlet and the exhaust outlet of other appliances shall not be less than 12 inches 305 mm 506501 01 VENT TERMINATION CLEARANCES FOR NON DIRECT VENT INSTALLATiONS IN THE USA AND CANADA INSIDE CORNER DETAIL ixed osed SS N AREA WHERE TERMINAL VENT TERMINAL Q AIR SUPPLY INLET S IS NOT PERMITTED US installations Canadian Installations Clearance above grade 12 inches 305mm or 12 in 305mm 12 inches 305mm or 12 in 305mm porch deck or balcony above average snow accumulation above average snow accumulation Clearance to window 6 inches 152mm for appliances lt 10 000 door that may be opened 4 feet 1 2 m below or to side of opening Btuh 3kw 12 inches 305mm for 1 foot 30 cm above opening appliances gt 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances gt 100 000 Btuh 30kw C Clearance to permanently 12 42 closed window D Vertic
66. r to the CSA B149 Installation codes A CAUTION Do not install the furnace in a corrosive or contaminated atmosphere Meet all combustion and ventilation air requirements as well as all local codes All gas fired appliances require air for the combustion process lf sufficient combustion air is not available the furnace or other appliance will operate inefficiently and unsafely Enough air must be provided to meet the needs of all fuel burning appliances and appliances such as exhaust fans which force air out of the house When fireplaces exhaust fans or clothes dryers are used at the same time as the furnace much more air is required to ensure proper combustion and to prevent a down draft Insufficient air causes incomplete combustion which can result in carbon monoxide In addition to providing combustion air fresh outdoor air dilutes contaminants in the indoor air These contaminants may include bleaches adhesives detergents solvents and other contaminants which can corrode furnace components The requirements for providing air for combustion and ventilation depend largely on whether the furnace is installed in an unconfined or a confined space Unconfined Space An unconfined space is an area such as a basement or large equipment room with a volume greater than 50 cubic feet 1 42 m per 1 000 Btu 29 kW per hour of the combined input rating of all appliances installed in that space This space also includ
67. re 50 Page 34 of 48 The unit is equipped with a field makeup box The makeup box may be moved to the right side of the furnace to facilitate installation Seal unused openings on left side with plugs removed from right side Secure the excess wire to the existing harness to protect it from damage Refer to Figure 52 for field wiring and Figure 53 for schematic wiring diagram and troubleshooting The power supply wiring must meet Class restrictions Protected by either a fuse or circuit breaker select circuit protection and wire size according to unit nameplate NOTE Unit nameplate states maximum current draw Maximum Over Current Protection allowed is 15 AMP Holes are on both sides of the furnace cabinet to facilitate wiring Install a separate properly sized disconnect switch near the furnace so that power can be turned off for servicing Before connecting the thermostat check to make sure the wires will be long enough for servicing at a later date Make sure that thermostat wire is long enough to facilitate future removal of blower for service Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field wiring diagram shown in Figure 52 Use 18 gauge wire or larger that is suitable for Class ll rating for thermostat connections Electrically ground the unit according to local codes or in the absence of local codes according to the current National Electric Code ANSI HFPA No 7
68. red for the unit to operate properly Table 1 list recommended filter sizes A filter must be in place whenever the is operating Furnace Cabinet Width Bottom Return 17 1 2 16 X 25 X 1 16 X 25 X 1 16 X 25 X 1 20 X 25 X 1 24 1 2 16 X 25 X 1 24 X 25 X 1 Table 1 506501 01 Issue 1031 Duct System Use industry approved standards to size and install the supply and return air duct system This will result in a quiet and low static system that has uniform air distribution NOTE This furnace is not certified for operation in heating mode indoor blower operating at selected heating speed with an external static pressure which exceeds 0 5 inches w c Operation at these conditions may result in improper limit operation Supply Air Plenum If the furnace is installed without a cooling coil a removable access panel should be installed in the supply air duct The access panel should be large enough to permit inspection by reflected light of the heat exchanger for leaks after the furnace is installed The furnace access panel must always be in place when the furnace is operating and it must not allow leaks into the supply air duct system Return Air Plenum NOTE Return air must not be drawn from a room where this furnace or any other gas fueled appliance i e water heater or carbon monoxide producing device i e wood fireplace is installed When return air is drawn from a room a negative pressure is
69. ressure Measurement A threaded plug on the inlet side of the gas valve provides access to the supply pressure tap Remove the threaded plug install a field provided barbed fitting and connect a manometer to measure supply pressure Replace the threaded plug after measurements have been taken For proper furnace operation the minimum gas supply pressure is 5 w c and the maximum gas supply pressure is 13 w c for natural gas The minimum gas supply pressure is 10 w c and the maximum gas supply pressure is 13 w c for LP propane gas Manifold Pressure Measurement 1 Remove the threaded plug from the outlet side of the gas valve and install a field provided barbed fitting Connect to a manometer to measure manifold pressure 2 Startunit and allow 5 minutes for unit to reach steady state While waiting for the unit to stabilize observe the flame Flame should be stable and should not lift from burner Natural gas should burn blue 4 After allowing unit to stabilize for 5 minutes record manifold pressure and compare to value given in Table 9 NOTE Shut unit off and remove manometer as soon as an accurate reading has been obtained Take care to remove barbed fitting and replace threaded plug High Altitude Information NOTE n Canada certification for installations at elevations over 4500 feet 1372 m is the jurisdiction of local authorities The manifold pressure may require adjustment to ensure proper operation at hig
70. rnace cabinet at the maximum dimensions shown on page 2 Furnace applications which include side return air and a condensate trap installed on the same side of the cabinet trap can be installed remotely within 5 ft require either a return air base or field fabricated transition to accommodate an optional IAQ accessory taller than 14 5 See Figure 11 Side Return Air with transition and filter 20 X 25 X 1 508 mm X 635 mm X 25 mm 1 1 2 in Air Filter Return Air Figure 11 506501 01 CONDENSATE Ned rA AIR FLOW u e 17 1 2 446 B Width 68W62 21 553 C Width 68W63 INDOOR AIR QUALITY CABINET Optional Return Air Base Upflow Applications Only FURNACE FRONT IF BASE IS USED WITHOUT IAQ CABINE T A SINGLE RETURN AIR PLENUM MUST COVER BOTH UNIT AND _ RETURN AIR BASE 7 1 4 OPENINGS J 184 OPTIONAL RETURN AIR BASE 193 584 Overall Maximum Minimum 11 279 2 Maximum 1 22 7 16 14 356 570 Overall Maximum 1 Unit side return air Opening 5 5 3 SIDE RETURN ____ Either Side 584 24 1 2 662 Width 68W64 FRONT VIEW NOTE Optional side return air filter kits are not for use with return air base 1 Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air W x H 23 x 11 in 584 x 279 m
71. rvicing of the condensate trap unless the trap is mounted remotely For installations on a combustible floor do not install the furnace directly on carpeting tile or other combustible materials other than wood flooring Figure 15 Suspended Installation of Horizontal Unit This furnace may be installed in either an attic or a crawl space Either suspend the furnace from roof rafters or floor joists as shown in Figure 16 or install the furnace on a platform as shown in Figure 17 Ahorizontal suspension kit 51W10 may be ordered from your distributor or use equivalent NOTE Heavy gauge sheet metal straps may be used to suspend the unit from roof rafters or ceiling joists When Straps are used to suspend the unit in this way support must be provided for both the ends The straps must not interfere with the plenum or exhaust piping installation Cooling coils and supply and return air plenums must be supported separately Page 12 of 48 Issue 1031 Typical Horizontal Application metal strap typical internal brace provided with kit bracket Figure 16 NOTE When the furnace is installed on a platform or with the horizontal suspension kit in a crawl space it must be elevated enough to avoid water damage accommodate drain trap and to allow the evaporator coil to drain Platform Installation of Horizontal Unit 1 Select location for unit keeping in mind service and other necessary clearances See Figure 15
72. s including ignition input rate temperature rise and venting must be verified according to these installation instructions General These instructions are intended as a general guide and do not supersede local codes in any way Consult authorities having jurisdiction before installation In addition to the requirements outlined previously the following general recommendations must be considered when installing one of these furnaces e Place the furnace as close to the center of the air distribution system as possible The furnace should also be located close to the chimney or vent termination point e When the furnace is installed in non direct vent applications do not install the furnace where drafts might blow directly into it This could cause improper combustion and unsafe operation e When the furnace is installed in non direct vent applications do not block the furnace combustion air opening with clothing boxes doors etc Air is needed for proper combustion and safe unit operation e When the furnace is installed in an attic or other insulated space keep insulation away from the furnace e When the furnace is installed in an unconditioned space consider provisions required to prevent freezing of condensate drain system A CAUTION These units should not be installed in areas normally subject to freezing temperatures Page 6 of 48 Issue 1031 A WARNING Product Contains Fiber
73. s a space categorized as unconfined air can be brought in by providing two permanent openings between the two spaces Each opening must have a minimum free area of 1 square inch 645 mm per 1 000 Btu 29 kW per hour of total input rating of all gas fired equipment in the confined space Each opening must be at least 100 square inches 64516 mm One opening shall be within 12 inches 305 mm of the top ofthe enclosure and one opening within 12 inches 305 mm of the bottom See Figure 4 Equipment in Confined Space All Air From Inside wH r E OPENINGS To Adjacent SIDE WALL Uncenfined TERMINATED EXHAUST PIPE ALTERNATE LOCATION h NOTE Each opening shall have a free area of at least one square inch per 1 000 Btu 645 per 29 kW per hour of the total input rating of all equipment in the enclosure but not less than 100 square inches 64546 mm Figure 4 Page 7 of 48 Air from Outside If air from outside is brought in for combustion and ventilation the confined space shall be provided with two permanent openings One opening shall be within 12 305 mm ofthe top of the enclosure and one within 12 805 mm of the bottom These openings must communicate directly or by ducts with the outdoors or spaces crawl or attic that freely communicate with the outdoors or indirectly through vertical ducts Each opening shall have a minimum free area of 1 square inch per 4 000 Btu 645 per 59
74. s furnace must be electrically grounded according to local codes In addition in the United States installation must conform with the current National Electric Code ANSI NFPA No 70 The National Electric Code ANSI NFPA No 70 is available from the following address National Fire Protection Association 1 Battery March Park Quincy MA 02269 In Canada all electrical wiring and grounding for the unit must be installed according to the current regulations of the Canadian Electrical Code Part CSA Standard C22 1 and or local codes 506501 01 Issue 1031 Heating Unit Installed Parallel to Air Handler Unit Dampers open during heating operation only lel a lt a V Air Handler Unit h Dampers open during cooling operation only Heating Unit Installed Upstream of Cooling Unit Evaporator Figure 3 NOTE This furnace is designed for a minimum continuous return air temperature of 60 F 16 C or an intermittent operation down to 55 F 13 C dry bulb for cases where a night setback thermostat is used Return air temperature must not exceed 85 F 29 C dry bulb This furnace may be installed in alcoves closets attics basements garages and utility rooms in the upflow or horizontal position This furnace design has not been CSA certified for installation In mobile homes recreational vehicles or outdoors Use of Furnace as a Construction Heater These units are not recommended for construction he
75. sary A WARNING Danger of explosion Can cause injury or product or property damage Should the gas supply fail to shut off or if overheating occurs shut off the gas valve to the furnace before shutting off the electrical blower deck before performing any service procedure A CAUTION Before attempting to perform any service or maintenance turn the electrical power to unit OFF at disconnect switch BEFORE LIGHTING the unit smell all around the furnace area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor The gas valve on the unit is equipped with a gas control switch lever Use only your hand to move switch Never use tools If the switch will not move by hand do not try to repair it Force or attempted repair may result in a fire or explosion Placing the furnace into operation This furnace is equipped with an automatic hot surface ignition system Do not attempt to manually light burners on this furnace Each time the thermostat calls for heat the burners will automatically light The ignitor does not get hot when there is no call for heat on these units 506501 01 Issue 1031 Page 37 of 48 Priming Condensate Trap The condensate trap should be primed with water prior to start up to ensure proper condensate drainage Either pour 10 fl oz 800 ml of water into the trap or follow these steps to prime the trap 1 Follo
76. t least one square inch per 2 000 Btu 645 per 59 kW per hour of the total input rating of all equipment in the enclosure If the equipment room is located against an outside wall and the air openings communicate directly with the outdoors each opening shall have a free area of at least 1 square inch per 4 000 Btu 645 mm 1 17 kW per hour of the total input rating of all other equipment in the enclosure Figure 7 506501 01 Shipping Bolt Removal Units with 1 2 hp blower motor are equipped with three flexible legs and one rigid leg The rigid leg is equipped with a shipping bolt and a flat white plastic washer rather than the rubber mounting grommet used with a flexible mounting leg See Figure 8 The bolt and washer must be removed before the furnace is placed into operation After the bolt and washer have been removed the rigid leg will not touch the blower housing Units with 1 2 HP Blower Motor RIGID LEG remove shipping bolt and washer Figure 8 INSTALLATION Setting Equipment A WARNING Do not connect the return air ducts to the back of the furnace Doing so will adversely affect the operation of the safety control devices which could result in personal injury or death A WARNING Blower access panel must be securely in place when blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into living space resulting in personal injur
77. tailed installation instructions A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment all venting instructions all parts lists for venting instructions and or all venting design instructions shall remain with the appliance or equipment at the completion of the installation 506501 01
78. taken from indoors and flue gases are discharged outdoors See Figure 2 for applications involving roof termination DIRECT VENT INSTALLATION _ NON DIRECT VENT INSTALLATION COMBUSTION AIR f OUTLET OUTSIDE OF HOUSE EXHAUST OUTLET COMBUSTION AIR INTAKE INSIDE USE Figure 2 Shipping and Packing List 1 Assembled Gas Furnace 1 Bagassembly containing the following 3 Wire nuts 1 Snap bushing 1 Snap Plug 1 Wire tie 1 Condensate trap 1 Condensate trap cap 1 Condensate trap clamp 1 2 diameter debris screen Check equipment for shipping damage If you find any damage immediately contact the last carrier Please refer to specification sheets for available accessories Page 4 of 48 Issue 1031 Safety Information A WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by alicensed professional installer or equivalent service agency or the gas supplier A CAUTION As with any mechanical equipment personal injury can result from contact with sharp sheet metal edges Be careful when you handle this equipment A DANGER DANGER OF EXPLOSION There are circumstances in which odorant used with LP Propane gas can lose its scent In case of a leak
79. the room where the furnace is installed Return air duct Must be properly attached and provide an air seal to the unit Operating performance Unit must be observed during operation to monitor proper performance of the unit and the vent system Combustion gases Flue products should be analyzed and compared to the unit specifications Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the items can be repaired or replaced Instruct the homeowners to pay attention to their furnace Situations can arise between annual furnace inspections that may result in unsafe operation For instance items innocently stored next to the furnace may obstruct the combustion air supply This could cause incomplete combustion and the production of carbon monoxide gas Page 44 of 48 Issue 1031 LED Status LED Off LED On 1 Flash 2 Flashes 3 Flashes 4 Flashes 5 Flashes 6 Flashes 7 Flashes 8 Flashes 9 Flashes FAILURE CODES Fault Description No power to control or control hardware fault detected Normal operation Flame Present with gas valve off Pressure switch closed with inducer off Pressure switch open with inducer on High limit switch open Rollout switch open Pressure switch cycle lockout Lockout due to no ignition Lockout due to too many flame dropouts Incorrect line voltage phasing 506501 01 REPAIR PARTS LIST The following re
80. ting copper condensate lines for drain line CONDENSATE TRAP LOCATIONS Unit shown in horizontal right hand discharge position Field Provided Vent Must Not Interfere VWith Service To The Unit 5 max PVC Pipe Only Piping from furnace must slope down a minimum to drain of 1 4 per ft toward trap Figure 43 Page 30 of 48 Issue 1031 506501 01 Gas Piping A CAUTION If a flexible gas connector is required or allowed by the authority that has jurisdiction black iron pipe shall be installed at the gas valve and extend outside the furnace cabinet The flexible connector can then be added between the black iron pipe and the gas supply line A WARNING Do not exceed 600 in lbs 50 ft Ibs torque when attaching the gas piping to the gas valve 1 Gas piping may be routed into the unit through either the left or right hand side Supply piping enters into the gas valve from the side of the valve as shown in Figure 47 Move Bellows grommet to side which gas line enters Ensure opposite gas line hole is plugged with supplied plug A IMPORTANT The gas valve requires a low inlet pressure switch in LP propane applications A 4 BIP nipple must be installed in the gas valve inlet when right side gas entry is used in LP propane applications See Figure 47 2 When connecting gas supply factors such as length of run number of fittings and furnace rating must be considered to avoi
81. trical power to furnace When servicing controls label all wires prior to disconnecting Take care to reconnect wires correctly Verify proper operation after servicing Atthe beginning of each heating season system should be checked as follows by a qualified service technician Blower Check the blower wheel for debris and clean if necessary The blower motors are prelubricated for extended bearing life No further lubrication is needed A WARNING The blower access panel must be securely in place when the blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into living space resulting in personal injury or death Filters All air filters are installed external to the unit Filters should be inspected monthly Clean or replace the filters when necessary to ensure proper furnace operation Table 1 lists recommended filter sizes Exhaust and air intake pipes Check the exhaust and air intake pipes and all connections for tightness and to make sure there is no blockage NOTE After any heavy snow ice or frozen fog event the furnace vent pipes may become restricted Always check the vent system and remove any snow or ice that may be obstructing the plastic intake or exhaust pipes Electrical 1 Check all wiring for loose connections 2 Check for the correct voltage at the furnace furnace operating 3 Check amp draw on the blower motor Motor Nameplate Actual Page
82. uh 3kw and 50 000 Btuh appliances gt 10 000 Btuh 3kw and pliance 15 kw 12 inches 305mm for ap 100 000 Btuh 30kw 36 inches 9m lances gt 50 000 Btuh 15kw for appliances gt 100 000 Btuh 30kw to mechanical air sup 3 feet 9m above if within 10 feet 6 feet 1 8m ly inlet 3m horizontall L Clearance above paved sidewalk or 7 feet 2 1m 7 feet 2 1myf paved driveway located public property Clearance und r veranda porch 12 inches 305mm 12 inches 305mm deck or balcon In accordance with the current ANSI Z223 1 NFPA 54 Natural Fuel Gas Code For clearances not specified ANSI Z223 1 NFPA 54 or CSA B149 1 deer 2 In accordance with the current CSA B149 1 Natural Gas and Propane installation Code ance will be in accordance with local installation codes and the requirements T vent shall not terminate directly above a sidewalk or paved driveway that is located Ofthe gas supplier and these installation instructions between two single family dwellings and serves both dwellings Pennitted only if veranda porch deck or balcony is fully open on a minimum of two sides beneath the floor Allied Air recommends avoiding this location if possible Figure 29 Page 24 of 48 Issue 1031 506501 01 Details of Intake and Exhaust Piping Terminations for Direct Vent Installations NOTE n Direct Vent installations combustion air is taken from outdoors and flue gases are disc
83. uirements For all side wall horizontally vented gas fueled equipment Installed in every dwelling building or structure used in whole or in part for residential purposes including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven 7 feet above the finished grade in the area of the venting including but not limited to decks and porches the following requirements shall be satisfied 1 INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontally vented gas fueled equipment the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery backup is installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gas fitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling building or structure served by the side wall horizontally vented gas fueled equipment It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors a Inthe event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and battery backup may be installed on the ne
84. uld result in carbon monoxide poisoning or death The following steps shall be followed for each appliance connected to the venting system being placed into operation while all other appliances connected to the venting system are not in operation After the gas furnace has been started the following test should be conducted to ensure proper venting and sufficient combustion air has been provided to the unit as well as to other gas fired appliances which are separately vented If this furnace replaces a Category furnace which was commonly vented with another gas appliance the size of the existing vent pipe for that gas appliance must be checked Without the heat of the original furnace flue products the existing vent pipe is probably oversized for the single water heater or other appliance The vent should be checked for proper draw with the remaining appliance The test should be conducted while all appliances both in operation and those not in operation are connected to the venting system being tested If the venting system has been installed improperly or if provisions have not been made for sufficient amounts of combustion air corrections must be made as outlined in the previous section 1 Sealany unused openings in the venting system 2 Visually inspect the venting system for proper size and horizontal pitch Determine there is no blockage or restriction leakage corrosion or other deficiencies which could cause an unsaf
85. w the lighting instructions to place the unit into operation Set the thermostat to initiate a heating demand Allow the burners to fire for approximately 3 minutes Adjust the thermostat to deactivate the heating demand Wait for the combustion air inducer to stop Set the thermostat to initiate a heating demand and again allow the burners to fire for approximately 3 minutes 6 Adjust the thermostat to deactivate the heating demand and wait for the combustion air inducer to stop At this point the trap should be primed with sufficient water to ensure proper condensate drain operation gt O A WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal Injury or death Gas Valve Operation Figure 55 1 STOP Read the safety information at the beginning of this section 2 Setthe thermostat to the lowest setting 3 Turn OFF all electrical power to the unit 4 This furnace is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand Remove the upper access panel Move gas valve switch to OFF See Figure 55 Wait five minutes to clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 8 Move gas valve switch to ON See Figure 55 PE GAS VALVE
86. xt adjacent floor level b Inthe event that the requirements of this subdivision cannot be met at the time of completion of installation the owner shall have a period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery operated carbon monoxide detector with an alarm shall be installed 2 APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI UL 2034 listed and IAS certified 3 SIGNAGE Ametal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS Page 48 of 48 Issue 1031 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless upon inspection the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5 08 2 a 1 through 4 EXEMPTIONS The following equipment is exempt from 24 CMR 5 08 2 a 1 through 4 1 Theequipment listed in Chapter 10 entitled Equipment Not
87. y or death Upflow Applications The gas furnaces can be installed as shipped in the upflow position Refer to Figure 10 for clearances Select a location that allows for the required clearances that are listed on the unit nameplate Also consider gas supply connections electrical supply vent connection condensate trap and drain connections and installation and service clearances 24 inches 610 mm at unit front The unit must be level from side to side Tilt the unit slightly maximum 1 2 in from level from back to front to aid in the draining of the heat exchanger See Figure 9 Allow for clearances to combustible materials as indicated on the unit nameplate SETTING EQUIPMENT Unit must be level side to side in all applications UPFLOW APPLICATION C AIR FLOW FRONT VIEW SIDE VIEW HORIZONTAL APPLICATION FRONT VIEW UNIT FRONT 1 2 END VIEW usw Tilt the unit slightly Max 1 2 from back to front to aid in the draining of the heat exchanger Figure 9 506501 01 Issue 1031 Page 9 of 48 A WARNING Improper installation of the furnace can resultin personal injury or death Combustion and flue products must never be allowed to enter the return air system or air in the living space Use sheet metal screws and joint tape to seal return air system to furnace In platform installations with furnace return the furnace should be sealed airtight to the return air plenu

Allied Air Enterprises 92G1UH Furnace User Manual

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