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Nordyne M1B Furnace User Manual

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2. 2 501 esn eq ay perddns se jo Aue uoneuuojur 104 eas 10109 0 pazisejod 4 L SALON 319V1d303H 2 ama YOLOSNNOO 9 5 LON 33S 4 5 qup i BES RRB 589 LE 39 21 EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES Includes 4 Input Reduction for Each 1 000 Feet MODEL OUTPUT CAPACITY SEALEVEL 2000 3000 4000 5000 6000 7000 8000 9000 10000 Up DILE ZEIEAEAEAEREREEREE M1M G 056 Up IEEE ZEIEIESEREREREERE M1M G 070 OUTPUT MBTUH 567 52 3 50 2 48 2 462 444 42 6 40 9 ORIFICE SIZE NAT GAS 21 M1M 077 JOUTPUT MBTUH 617 569 546 524 50 3 48 3 46 4 44 5 427 41 0 moor Ta Pate re restate tet a M1G 077 JOUTPUT MBTUH 599 55 2 53 0 50 9 48 9 46 9 45 0 432 41 5 39 8 OUTPUT MBTUH 717 __ 66 1 635 60 9 58 5 56 1 53 9 51 7 497 477 JOUTPUT MBTUH 697 __ 64 2 617 59 2 56 8 54 6 524 50 3 48 3 463 Dg
3. YAMS ue4 40 U0 7 uod j9 U Y 2 sed 2 es ee 0 6 4 ion 201 Ajddng jeuondo peri st our jens yur eq Aew e1oN A ug 9NEA HO NYS J veuny jo 6 Buiusng N el deo eur IIO 8 6 18 ground Fuel tanks may also be buried if prop erly coated to resist corrosion For below ground fuel tank installations the vertical dimension from the bottom of the fuel tank to the fuel pump must not exceed ten feet Keep the tank filled especially in the summer to reduce the accu mulation of condensation Fuel Line Hook Up One Line System The one line system is highly recommended where vertical lift from bottom of tank to pump is not more than eight feet A single line hookup has the advantage of costing less and giving quieter operation Fuel Line Hook Up Two Line System Use a two line system only if the vertical lift exceeds 8 feet 1 Install the oil feed line as outlined in steps 1 6 below 2 Install the oil pump bypass plug in the bottom return port 3 Run
4. 1 066 Ig re Pe Perera ete tata M1B 086 JOUTPUT MBTUH 682 62 9 60 3 57 9 55 6 53 4 51 2 49 2 47 2 453 Table 12 High Altitude Reference Sources ANSI 2233 1 8 NFPA 54 National Fuel Gas Code For Canadian high altitude 2 000 4 500 reduce gas manifold pressure to 3 0 W C for natural gas and 9 W C for LP gas NOTE Do not attempt to change the size of an orifice by drilling it out To do so will void the manufacturer s warranty INSTALLER Please leave these installation instructions with the homeowner We Encourage Professionalism US Throw Listed Certification on y NATE 708074E 708074E Replaces 708074D Specifications and illustrations subject to change without notice and without incurring obligations NORDYNE Printedin U S A 04 06
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9. A 56 Provide min 250 Sq in 1613 cm open free area in front or side wall or B 76 dh in closet A Model door w o Coil Cabinet a fully im louvered B Model Si door may Clearance be used to Furnace Cabinet w Coil Cabinet ___ 4 23 LK gt r4 d S1934 _ Figure 1 Overall Dimensions Figure 4 Special 1 Clearance a Federal Manufactured Home Constructions amp Safety Standard H U D Title 24 Part 3280 707 a 2 b American National Standard ANSI 119 2 NFPA 5010C for all recreational vehicle in stallations c American National Standard ANSI Z223 1 NFPA 54 and or CAN CGA B149 for all gas fired furnace models d American National Standard ANSI Z95 1 NFPA 31 and or CSA B139 for all oil fired furnace models e American National Standard ANSI C1 NFPA 70 and or CSA 22 1 Canadian Elec tric Code Part 1 for all electrical field wiring f Units have been investigated under stan dards UL 307A amp B UL727 1999 ANSI 21 47a CAN 2 3a 1995 and CSA B140 10 5 UNIT LOCATION The furnace shall be appropriately located to the supply and return air distribution system See AIR DISTRIBUTION Page 8 Sides and back of the furnace may be enclosed by wall framing See Minimum Clearances Table 4 and Figures 2 through 5 The furnace installation is only intended for free air return through the furnace door louve
10. HUD snowload zones use an external roof jack extension p n 901937 f M1 furnaces may be used with roof jacks as tall as 170 except M1M 056 amp M1B 066 models which are limited to 120 An internal roof jack extension p n 901935 10 p n 903107 18 can be used to increase roof jack height All connections inside the home must be made below the ceiling These extensions are available as optional accessories and may be purchased through your NORDYNE distributor USE SLANT DECK IF ROOF PITCH IS FLASHING X FACTOR IS F Series Roof Jack 2 in 12 903893 2 5 12 2 1 8 2 1 2 in 12 903893 2 5 12 2 1 2 3 in 12 903894 3 12 2 7 8 3 1 2 in 12 903894 3 12 3 1 4 4 in 12 903895 4 12 3 5 8 S Series Roof Jack 2 5 12 Pitch only 4 1 2 in 12 903895 2 5 12 2 1 8 5 in 12 903895 2 5 12 2 1 2 5 1 2 in 12 903894 3 12 2 7 8 6 in 12 903894 3 12 3 1 4 6 1 2 in 12 903895 4 12 3 5 8 Optional Deck Flashings for Flat and 2 5 12 Pitch Roof Jacks 4 12 Pitch Roof Jacks not applicable Table 6 Slant Deck Flashings Use Duct Connector If X Floor Cavity is Model Part Number English Metric mm Finger Tab Screw Down 7 8 22 901987 904008 2 51 901988 904009 4 1 4 108 901989 904010 6 1 4 159 901990 904011 8 1 4 210 901991 904012 10 1 4 260 901992 904013 12 1 4 311 901993 904014 Table 7 Floor Cavity Sizes 10 DUCT CONNECTOR SE
11. 1 On Off Switch This switch turns electrical power to the furnace on and off The switch must be set in the On position for the furnace to operate For M1G models in warm weather there is a possibility of the blower coming on periodically or operating continuously due to a heat buildup within the furnace by a combination of warm weather and heat from the pilot This is normal operation as long as there is power to the furnace and the On Off switch is at the ON position If blower operation is not desired the On Off switch may be set in the OFF position to cut the electrical power to the furnace 2 Limit Control This furnace is protected by two high temperature safety limit switches The auxiliary upper limit switch and the high temperature lower limit switch are auto matic reset types either limit trips the burner will shut off If either limit switch trips off again soon after resetting set the furnace On Off switch to the OFF position and call your authorized serviceman 3 Gas Valve The gas valves for the gas furnaces are a 100 shut off type and will fail safe if for some reason the gas is turned off The valve is a step open type for M1G models and slow open for M1M and M1B models which means it opens to a low fire position and after a few seconds steps open to high fire 4 Roll Out Switch M1G 056 amp 070 The furnace is protected by a manual
12. e Check for gas supply gas line valve on control lever on Control Module Is Powered Ignitor Does Not Heat Up a Disconnect ignitor leads at AMP receptacle and check for 120 volts at the plug during ignition sequence b Replace ignition control if 120 volts is not available at AMP plug during ignition se quence 120 Volts Is Available At AMP Plug Ignitor Does Not Heat Up a Disconnect power to the furnace b Disconnect AMP plug to the ignitor and check ignitor resistance with an ohm meter Set on RX1 scale e Normal reading should be 40 75 ohms f above or below this rating at room tem perature change ignitor c Check for continuity from ignitor receptacle to burner Main Flame Ignites Burner Locks Out a Ignition control is not properly grounded b Defective ignition control c Improper polarity of 120 volt power supply d Ignitor has hairline crack e Improper gas pressure or burner air adjust mentis not allowing flame to contact ignitor tip for flame rectification Misaligned ignitor does not allow flame to contact ignitor tip for flame rectification Burner Short Cycling Thermostat Calls for Heat Limit Switches Closed Check for polarity Check ground Check flue Check combustion air Check gas pressure Check orifice Check the position of ignitor a normal read ing should be 40 75 ohms 24 Volts Supplied To Gas
13. Ceiling um Figure 23 Pitched Roof c Venting system warning tags to be removed and discarded A WARNING Failure to properly secure the flue pipe to the furnace may resultin fire explo sion or asphyxiation when operating the furnace 13 ELECTRICAL WIRING Refer to the wiring diagram in these instructions or affixed to the inside of the control box cover for the wiring of your particular unit ELECTRICAL BRANCH SUPPLY CIRCUITS Route all electrical wiring to the left side of the furnace For installation of A Cabinet fur naces allow sufficient slack in the wiring if an optional cooling coil cabinet is added at a later time Use of copper conductors is recom mended A WARNING Any attemptto operate furnace before replacing transit mode weather cap with upper roof jack section may re sult in hazard of fire explosion or as phyxiation WEATHER CAP FLASHING p OUTER PIPE INNER FLUE PIPE FLUE ASSEMBLY SCREWS Power supply circuit to the furnace must be installed and grounded in accordance with the National Electrical code ANSI C1 NFPA 70 or Canadian Electric Code Part 1 CSA 22 1 and all local codes having jurisdiction CONNECT POWER SUPPLY WIRES a Remove the furnace control panel cover b Insert 115 volt wires through the strain relief on the left side of the furnace control box see Figure 25 c Connect the hot wire to the BLACK pigtail lead an
14. M1GHO090 90 72 17 36 X x 1 4 3 1 0904 90 72 17 36 1 4 3 090 90 72 17 36 x x 1 2 4 M1GD 090 90 72 17 36 x x 3 4 5 056 56 46 29 45 x 1 8 2 1 056 56 46 29 45 1 4 3 056 56 46 29 45 x x 1 2 4 M1MDO056 56 46 29 45 x x 3 4 5 070 __ 70 57 24 42 x x 15 2 1 070 70 57 24 42 x x 1 4 3 070 70 57 24 42 x x 1 2 4 M1MD 070 70 57 24 42 i x x 3 4 5 1 077 77 62 21 40 0 3 x 1 4 3 077 77 62 21 40 0 3 x x 1 2 4 M1MDO77 77 62 21 40 0 3 x x 3 4 5 1 090 90 72 17 36 0 3 X X 1 4 3 M1MCO90 90 72 17 36 0 3 x x 1 2 4 1 090 90 72 17 36 0 3 x x 3 4 5 M1BAO066 66 53 26 43 0 3 x x 2 1 066 66 53 26 43 x 3 1 066 66 53 26 43 x x 4 1 086 86 68 18 37 x x 3 1 086 86 68 18 37 x x 4 M1SA 066 66 54 50 G X Burner Model 2 MiSBO66 66 54 x 3 15 066 x AF 10 Nozzle M1SB 086 x Spray Angle 3 M1SC 086 x 80 A 4 Electrical Supply 120 volts 60HZ 1 Ph Thermostat Circuit 24 volts 60 2 30 vac Fuse or Breaker 15 amps Normal Anticipator Setting 0 4 Temperature Rise 45 to 75 F Manifold Pressure Natural Gas 3 5 w c High Altitude See Table 11 For Canadian LP Gas 10 w c High Altitude 2 000 to 4 500 reduce the Blower capacity only needs relay box for AC gas manifold pressure to 3 0 W C for natural gas and to 8 W C for LP gas Table 2 M1 Furnace Specifications Blowe
15. This interlock sys tem usually contains either a Heat Cool switch which must be turned to the Heat or Cool position to activate either heating or cooling operation or a positive OFF switch on the cooling thermostat 31 Figure 37 Coil Cavity Damper Non Platinum Series Only Figure 38 Damper without Coil Cavity Non Platinum Series Only M1 A C Ready M1 A C Ready Thermostat Furnace Thermostat Furnace Red Red White White White White Green N Green Green Green Yellow Grey Yellow Grey Route Thermostat wire to intended Platinum Series AC HP location Coil and secure extra Standard Wiring six feet of wire to home s undercarriage Platinum Ready Wiring Figure 39 Thermostat Wiring A C Ready Models 32 Blower Speed Selection Chart for M1 B Models and for use with Blower Kit No 903773 1 4 Speed Cooling Speed Evap Coil __ H om om M Blower Speed Selection Chart for M1 C Models and 1 2 Hp 4 Speed Cooling Speed Evap Coil 2 2 1 2 E 4 Ton amp 3 Ton for use with Blower Kit No 903413 Blower Speed Selection Chart for M1 D Models and for use with Blower Kit No 903414 and 903890 Cooling Speed Evap Coil 2 1 2 Ton 3 1 2 amp Ton amp 4 Ton cpu pup Table 11 A C Blower Selection The furnace must also be equipped with an automatic damper See Figures 37 or 38 NORDYNE p n
16. Turn off all electric power to the appliance Push in the gas control lever slightly and move left to OFF DO NOT FORCE Wait ten 10 minutes to clear out any gas If you then smell gas STOP Follow step d the SAFETY INFORMATION If you don t smell gas go to the next step Find pilot follow metal tube pilot tube from gas control valve Open hinged fire obser vation door The pilot is found at the end of the pilot tube just left of the pilot shield Slightly depress the gas control lever and move it right to the ON position and release then move it to the PILOT position Move the control lever to SET and hold Immediately light the pilot with a match Continue to hold the control lever for about one 1 minute after the pilotis lit Release the lever and it will spring back to the PILOT position Pilot should remain lit If it goes out repeat steps d through h above If the lever does not spring back when released stop and immediately call your service tech nician or gas supplier If the pilot will not stay lit after several tries move the gas control lever to OFF and call your service techni cian or gas supplier Move the gas control lever left to ON Turn on all electric power to the furnace Set the thermostat to Heat and or the desired temperature setting Set the On Off Fan switch to ON Replace the furnace door A WARNING C
17. 15 second lockout time the control shuts down on safety lockout and must be manually reset If control locks over three times in a row the control enters restricted lockout To reset hold down the reset button for 30 seconds until the LED flashes twice Once flame is established the ignition re mains on 10 seconds to ensure flame stabil ity It then turns off The circulating air blower will energize after the temperature fan switch closes The furnace runs until the call for heat is satisfied The circulating air blower will de energize when the temperature fan switch opens N WARNING If furnace still does not light turn the furnace off described above and call your technician In the event of any flashback or explosion immediately shut off furnace and call your service technician Gas Gun Models M1 gas gun furnaces may be converted to oil gun in the field by using the proper conversion kit listed in the RPL If yourfurnace model number begins with M1B the furnace does not have a pilot Ignition is accomplished automatically by a silicon car bide hot surface ignitor A control module takes care of all lighting and timing functions There are no external relays or timing devices Do not try to light this furnace manually The control module is not field serviceable 1 Before operation smell all around the fur nace for gas Be sure to smell next to the floor because some gas is heavier tha
18. 3 8 0 1 16 a FZ Te IN Figure 32 Oil Gun electrode Position 26 N CAUTION Combustion air adjustment must be made only by a qualified technician Improper air adjustment may cause unsafe operation explosion and or fire asphyxiation e the input to the furnace is too great because of excessive gas pressure wrong size nozzle or orifice high alti tude etc the burner flame will be sooty and can produce carbon mon oxide which could result in unsafe operation explosion and or fire or asphyxiation GAS CONVERSION This gas fired heating appliance was shipped from the factory for use with natural gas How ever the appliance can be converted for use with LP gas Use the following procedure for gas conversion of the burner ATMOSPHERIC AND DIRECT IGNITION FURNACES a Follow the instructions to Turn Off Gas to the Appliance b Disconnect the gas pipe union and the elec trical wires connected to the gas valve c Remove the pilot tube and thermocouple from the gas valve M1G Honeywell Valve 2 2967 OTHER SIDE OF CAP PRESSURE REGULATOR M11678 Figure 33 Convertible Pressure Regulator Cap Robertshaw Valve Figure 34 Convertible Pressure Regulator d To remove the gas valve assembly remove screw s from gas valve bracket Gas valve and spud may
19. 901996 for furnaces without coil cavity or p n 901083 with coil cavity to prevent cold air from being discharged up around the heat exchanger Cold air may cause conden sation inside the heat exchanger which can lead to rust and early failure OPTIONAL ADD ON AIR CONDITIONING Ask your dealer or contractor about NORDYNE add on central air conditioning systems There is a split system or package air conditioner designed for your total comfort needs Whether split system or single package an energy saving NORDYNE unit is available that has been designed specifically for manufactured housing applications and can best handle your home comfort needs Listed and ARI Certified all models are pro tected by the NORDYNE Air Conditioner Lim ited Warranty Platinum series units are self contained pack age units with compressor and cooling coils They are designed as a drop in system when used with the AC ready M1 Single package unit includes cooling coils com pressor and vertical discharge fan This type of unit connects with the existing home air duct System an optional close off damper is re quired with the furnace Split system unit with vertical discharge for quiet operation connects with NORDYNE cooling coil furnace optional coil cavity required with A model furnaces 33 020 990 oueudsouny sed Op nla 8288202 qald AS VI 7313 SATV
20. A WARNING Failure to keep supply of oil clean by various procedures described above may cause failure of certain compo nents such as the fuel pump gears check valve shaft seal or burner nozzle which may result in a burner fire 15 FLUE GAS SAMPLING It may be necessary to take flue gas sampling from oil and gas gun furnaces M1S and M1B Series Models in order to check the perfor mance after furnace installation A flue gas sample may be taken from the heat exchanger which is located behind the hole of the top front of blower compartment N STOP Read the SAFETY INFORMATION Turn off all electric power to the appliance Remove the black plastic cap located above the blower and save Through the top of the blower compartment hole drilla hole for your sampling tube into the heat exchanger Insert sampling tube through the drilled hole After a complete check and adjustment of furnace performance fill the drilled hole with a screw that is larger than the hole Put silicon sealant rated at least 500 F around the screw Plug the outside hole with the plastic cap you removed in step 3 A WARNING If you do not follow these instructions exactly a fire or explosion may result causing personal injury loss of life or property damage 16 LIGHTING AND SHUTDOWN GENERAL ALL MODELS Read the safety information on the front page of these installation inst
21. MODELS Main Burner Does Not Come On a Check the electrical supply to the furnace b Be sure the furnace On Off switch is in the ON position c Check for proper thermostat operation d Check for broken or open thermostat wires e Check to make sure the insulation located on the inside of the front panel is glued securely around the fan switch and the limit switch f Shut off the electrical supply to the furnace and remove the electrical box cover g Check for a defective transformer or blown fuse h Check electrical circuit for proper grounding polarity and make sure the electrical con nections are tight i Check to see if limit switches may have failed to close j Replace the electrical box cover and restore electrical power to the furnace Turn the On Off switch to ON and raise the thermostat setting above room temperature k Check for 24 volts at the gas valve Replace the gas valve if the pilot is estab lished and it does not open when powered with 24 volts Gas Valve Powered 24 volts No Main Flame a The manual shut off valve must be on b The pilot flame must be established c The gas valve control lever must be in the ON position d Check gas pressure coming to the gas valve e Replace the gas valve if the main burner does not come on under the above conditions Pilot Will Not Light or Goes Out a Check the incoming gas pressure b Check for the proper pilot
22. On a call for heat the thermostat contacts close supplying 24 VAC between terminals C and W of the control module which starts combustion motor b When the inducer starts the air pressure switch closes at 0 20 differential pres sure and energizes the control c After a 45 second purge period the ignitor is energized for a 30 second warm up period after which the gas valve opens d The trial period for ignition is approximately 6 seconds after which the gas valve either remains open if flame is sensed or closes if flame is not sensed If flame is not sensed the entire sequence is repeated four more times before lockout occurs To reset wait 30 seconds and then interrupt the 24 VAC power by turning the room thermostat below room temperature then returning it to the original set point If flame is not established on the fifth trial for ignition initial try 4 re tries the control de energizes the gas valve flashes 4 on the Status LED and lockouts out heat operation for 1 hour Ifa flame is present the control energizes the main blower on heat speed 30 seconds after the gas valve opens When call for heat is satisfied the thermostat contacts open the gas valve shuts off gas flow and the combustion blower remains on for a 30 second post purge period The main blower is de energized after a 120 second blower off delay NWARNING FOR YOUR SA
23. Valve During Ignition No Main Gas Flow a Gas valve may be defective necessary b Gas piping may be plugged Check for adequate gas supply to gas valve at union Replace if Burner Operates Insufficient Heat a Check thermostat for proper setting and location Thermostat should not be located where it will be affected by another heat source b Check for clean filter and proper air flow c Check burner for proper gas firing rate d Be sure unit is not undersized for its thermal load e Check thermostat anticipator The nominal anticipator setting is 0 4 Burner Flame Without Motor Running a Gas valve stuck open check gas valve for proper operation replace if necessary and inspect heat exchanger b Check for 115 volts to the combustion blower motor replace if necessary 29 c If no power to combustion blower then check wiring and control module replace if neces sary Circulation Air Blower Will Not Operate Even Though The Burner Does Operate a Check thermostat G wiring b Check wiring to motor c Check for a defective motor TROUBLESHOOTING OIL GUN Honeywell R7184 oil gun control only Burner does not start with a call for heat 1 Check the electrical supply to the furnace 2 Be sure the furnace door switch is in the on position 3 Check for line voltage at the oil primary control The voltage should be 115 VAC 4 Check indicator light with burner off no call for heat
24. be removed Orifice is located at the end of the spud M1G M1M or re move three 3 bolts from U shaped manifold plate and orifice assembly M1B e Replace the main orifice with the L P gas orifice supplied in the envelope located by the gas valve Check to insure the orifice size matches the nameplate f Itis not necessary to convert the pilot orifice g For Honeywell gas valves with the regulator converter Figure 33 check for the letters NAT or LP on the pressure regulator cap Unscrew the cap invert it replace and tighten until snug h For the Robertshaw gas valve with the regu lator converter Figure 34 remove the black cover and unscrew the converter located on top of the gas valve Invert the converter For LP the red ring will be located at the bottom and the LP stamping on the con verter will appear right side up Then screw converter back into the regulator hand tight plus 1 8 turn and replace the black cover onto the converter top to protect the threads i Reassemble the burner assembly into the furnace Reconnect the gas piping and electrical wires to the gas valve k Open the manual shut off valve and follow the FURNACE START UP procedure as outlined previously in this manual to put the furnace into operation NOTE The pilot flame is adjustable by turning the adjustment screw located on the gas valve with a small screwdriver See Figure 29 TROUBLESHOOTING STANDING PILOT
25. no flame a If indicator light is on the cad cell is seeing stray light or the cad cell or controller is defective b If indicator light is off go to step 5 c If flashing refer below a Reset primary control 5 Jumper T to T terminals on primary control a If burner starts check thermostat or limit wiring connections b If burner does not start turn off power Check all wiring connections c If burner does not start replace R7184 control Burner starts then locks out on safety with indicator light flashing at second 1 second off a Reset primary control To reset the control from lockout the button needs only to be pressed and released If it is in restricted mode the button should be held in for 30 seconds until the light flashes twice or until the light stops flashing on earlier models Note Restricted Mode If the control locks out three times in a row without a complete heat cycle between attempts the lockout becomes restricted mode 1 If indicator light stops flashing and ignition remains off primary control could be defective If line voltage is present at the ignitor terminals but there is no ignition the ignitor is probably defective and needs to be replaced 2 If indicator light stops flashing burner 30 Led Flashes Cad Cell Resistance Ohms 1 0 400 2 400 800 3 800 1 600 4 gt 1600 Table 10 Cad Cell Resistance when sensing flame t
26. orifice See the nameplate SPECIFICATION c Check for proper pilot flame adjustment See BURNER ADJUSTMENTS d Check the thermocouple millivoltage Millivoltage should read between 18 and 30 mv If the closed millivolt reading is not between 18 and 30 mv the gas valve electromagnet 27 Control Module Status Indicators M1M Series Control Status The Red LED labeled STATUS is provided to indicate system faults Steady ON Steady OFF Rapid flash One flash Two flashes Three flashes Four flashes Five flashes Control OK No power False flame or internal control fault Limit switch is open Pressure switch is open Pressure switch is stuck closed Lockout due to failed ignition L1 neutral reversed or L1 voltage not present on L1 Flame Status A Yellow LED labeled Flame is provided to indicate flame status When flame is sensed the flame LED is lit If flame sense is weak yellow LED will flash Control Module Status Indicator M1B a One flash the control is in lock out because the inducer centrifu gal switch is or was stuck closed b Two flashes the control is in lockout because the signal was not received by the control that the inducer centrifugal switch had closed within the time Three flashes the control is in lockout because a failed ignition attempt a gas valve error or a false flame sensed during the warm up period If false flame has been sensed the control wi
27. to a smaller number counterclockwise for less Factory Combustion Air Settings M1B 066 2 3 5 M1B 086 4 0 M1S 066 3 0 M1S 086 5 5 Table 9 25 air to a larger number clockwise for more air Tighten the lock nut after completing the adjust ment For best results use instruments to measure between 8 9 CO after the combus tion air has been adjusted Oil Gun Only It is recommended that the CO and Smoke levels should be measured for maximum per formance CO readings should be 10 11 for 66 000 BTUH furnaces and 12 13 for 86 000 BTUH furnaces The Smoke should be NO 0 on the Bacharach Scale and 0 to 0 02 negative draft over fire Electrode Setting Oil Gun Only Poor ignition of the oil spray may result if the electrodes are not adjusted as shown in Figure 32 Do not permit any electrodes to be grounded to any surface Switching the Honeywell R7184 Ignition Control between Interrupted and Intermit tent Duty Oil Gun Only The Honeywell oil primary control can be switched between interrupted and intermittent ignition control To switch from interrupted duty Factory set to intermittent duty remove the igniter wire from the blue control wire Attach the burner motor and igniter wire to the orange control wire Cap and reseal the orange control wire Cap and isolate the blue control wire 5 32 GAP A ELECTRODE 6 1 f S 1 NOZZLE 5 16 ABOVE CL i 1
28. 5 ton ready M1 Furnaces d The total free area of openings in the floor or ceiling registers serving the return air duct system must be at least 235 sq in At least one register should be located where it is not likely to be covered by carpeting boxes and other objects e Materials located in the return duct system must have a flame spread classification of 200 or less This includes a closet door if the furnace is in a closet Approx Length Model Number Below Flashing F S AW T 1523 0 2 4 A S 15 23 21 35 27 47 35 63 S AW T 27 47 2 5 FLUE STEEL TYPE A ALUMINIZED F FLAT FLASHING MIN ADJ 5 SLANT FLASHING LENGTH FLASHING TPE PITCH 12 RISE AW ALL WEATHER ___ BLANK NON TRANSIT ADJ FLAT T TRANSIT MODE LENGTH 2 2 5 12 4 4 12 All Weather Roof Jack Assemblies MODEL APPROX ADJ NUMBER LENGTHS BELOW FLASHING FO1323 5 13 23 FO2343 5 23 43 501835 5 18 35 502447 5 24 47 503263 5 32 63 504895 5 48 95 SOT2442 5 24 42 SOT2745 5 27 45 SOT4581 5 45 81 FOT2846 5 28 46 27 5 TYPE STANDARD H HIGH WIND MIN ADJ A ARCTIC ROOF JACK LENGTH S eee FLASHING 5 5 FLUE DIA F FLAT FLASHING one L ADJ LENGTH Table 5 Roof Jack Assemblies with Flashing Noncombustible pans having 1 upturned flanges are located beneath openings in
29. A SV9 1VOIN12313 HOLIMS OLNV NO HOLIMS LN3A 19538 1VANVIN 25 HOLIMS 3813 ve LIWTT IH p ania XNV SLIM AHOSS3ODV WNOILdO 403 AARAA e 0 105NNOO MATIVLSNI A HOLIMS 330 0 01 4 eq ay se ay Aue uoneuuojur je21329 o e euunj ees pezuejod eq Jamod SALON 34 SINVH9VIG 06 060 220 e2euinj 5 Lp anG 288802 HO LIMS 091313 OLNV NO 3ATVA SV9 1 21412313 SDVNYNA H LIMS j JOASNVYL Movida Movida 5 nln 0193 2 HOLIMS adA j 2 90 95 jsnui ay
30. Downflow Direct Vent Sealed Combustion Forced Air Gas and Oil Furnaces Owners Manual installation Instructions Series M1B M1G M1M and M1S For installation in 1 Manufactured Homes 2 Recreational Vehicles Park Models Manufactured Buildings 3 Modular Homes Buildings A WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Donotstore or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appli ance WHAT DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your build ing Immediately call your gas supplier from aneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas sup plier call the fire department Installation and service must be per formed by a qualified installer ser vice agency or the gas supplier NWARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the appliance before shutting off the electrical sup ply d NWARNING Improper installation adjustment al teration service or maintenance can cause injury or property damage Re fer to this manual For assistance or additional information consult a quali fied
31. FETY WHAT TO DO IF YOU SMELL GAS e Do try to light any appliance Donottouchany electrical switch do not use any phone in your building e immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions elf you cannot reach your gas sup plier callthe fire department Should overheating occur or the gas supply fail to shut off disconnect the power at the main circuit breaker and then see To Turn Off Gas To Appliance OPERATING INSTRUCTIONS FOR OIL AND GAS GUN FURNACE Oil Gun Model M1 oil gun furnaces may be converted to gas gun in the field by using the proper conversion kit listed in the RPL If your furnace model number begins with 15 the furnace is equipped with an ignition device which automatically lights the burner Do not try to light this furnace manually a Open all valves in the oil line b Be sure the fire door is closed c Set the On Off switch to ON d Set the thermostat to the desired setting SEQUENCE OF OPERATION FOR OIL GUN MODELS Oil Furnace Honeywell R7184 Control 1 When a call for heat is initiated there is a 2 6 second delay while the control performs a safe start check 2 The ignition and motor are turned on and a Co A N flame should be established within the 15 second lockout time NOTE Burner will prepurge for 15 seconds if equipped with R7184B Control If flame is not sensed within the
32. LECTION PLATINUM SERIES a For Platinum ready construction use the 14 round duct connector p n 903896 NON PLATINUM SERIES a Determine depth of floor cavity from surface of floor to top of supply air duct See Figure 9 FLOOR CAVITY depth equal to X in Figure 11 and Table 7 b Select appropriate model from Table 7 which matches X dimension of the floor cavity To maximize air delivery re move reducer C see Figure 11 to obtain the largest open area that will fit the duct floor construction Screw down duct connector opening to duct without reducer is 13 x 13 With reducer it is 13 x 10 1 8 Figure 9 Figure 10 REDUCER SPACERS Figure 11 INDICATES FINGER TAB DUCT CONNECTOR ONLY View of 2 Finger Tab js Duct Connector OPENING TO DUCT WITH PLATE C REMOVED OPENING BECOMES 13 1 4 x 13 1 4 SEE 7 10 CEILING AND ROOF OPENINGS 13 1 2 ALT FUEL INE HOLES FLOOR OPENING 23 1 4 FUEL ine HOLE Figure 12 Closet or Alcove gt 2 3 4 2 2 gt REAR WALL OF CLOSET OR ALCOVE_ gt 22 d 5 FLOOR CUT OUT o FOR DUCT CONN n 9 e tc 2 Y ES n e FLOOR CUT OUT FOR OPTIONAL FUEL LINE COOLING COIL FOR NON PLATINUM SERIES UNIT
33. S t an e ETE TEN 1 1 4 D eem 10 ALT FUEL LINE i 2 tere 8 119 8 lt 14 3 4 gt 15 1 2 gt Figure 13 Cut Out Locations 11 INSTALLATION Required floor ceiling and roof cut out open ings must be carefully located to avoid misalign ment of the furnace and Roof Jack see Figures 128 13 Installation procedures are suggested for typical furnace installations and need not be followed in the exact listed sequence CUT OUT FLOOR OPENING amp FUEL LINE HOLE a Determine center of closet or alcove Figure 13 b Locate center of the floor opening measured 10 from the rear wall and mark cut out measuring approximately 14 1 2 by 14 1 2 1 for model duct connector used refer to Figures 10 amp 11 c Locate center of fuel line hole measured 23 1 4 from the rear wall and 6 5 8 to the left of center of the floor cut out See Figure 12 or 5 1 4 to the left of center of the floor cut out or for entry through right side of furnace measured 9 to the right of center of the floor cut out d Cut out floor opening and one fuel line hole IMPORTANT Refer to the installation instructions provided with optional air conditioning packages when installing furnaces with optional cooling coil cabinet or with optional C series indoor coils CUT OUT CEILING AND ROOF OPENINGS a Locate center of Roof Jack opening mea sured 13 1 2 from the rear wall of close
34. UCT CONNECTOR a Place duct connector through the floor open ing See Figure 15 b Secure duct connector to floor INSTALLING SCREW DOWN DUCT CON NECTOR a Apply a bead of caulking mastic or other approved sealant around bottom side of 1 2 flange and restrictor plate when applicable b Locate the duct connector over duct and carefully lower screw down duct connector into place c Once duct connector is located on duct temporarily hold in place while fastening duct connector to the floor using flat head screws or nails Be sure flanges of duct connector stay in contact with the duct d Screw plenum to duct making sure a seal is made between the duct and the duct connec tor Additional screws may be added if re quired e Cut away duct along edge of flange allowing the center to drop into the duct Remove section of duct with caution as edges will be sharp 12 INSTALLING FINGER TABBED DUCT CON NECTORS a Place duct connector through the floor open ing with bottom tabs extending through the duct opening See Figure 15 b Secure duct connector to floor Bend bottom tabs under and up tightly against the supply air duct See Figure 16 NOTE The duct connector is designed for use on ducts 12 in width When using the connector on 12 wide ducts there may be insufficient clearance to bend the tabs on two sides of the duct connector In such cases the tabs may be attached to the sides of the duct b
35. UIVALENT ORIFICE SIZES AT HIGH ALTITUDES 40 M1MB 056A BW Application E M Manufactured Home Furnace Series Door Color W White Fuel Type of Combustion G Gray G Gas Direct Vent Pilot Burner Natural or Forced Draft Cabinet Dimensions M Gas Direct Vent HSI A 56 x 19 3 4 x 23 3 4 Forced Draft B w Coil Cavity B Gas Direct Vent Gun Burner 76 x 19 3 4 x 23 3 4 S Oil Direct Vent Gun Burner Electrical Code Comfort Model A 1PH 60 Hz 120 VAC H Heating A Heating A C Ready Heating Capacity B A C Ready 3 Ton Input BTUH 000 C A C Ready 4 Ton D A C Ready 5 Ton Table 1 Model Identification N A WARNING Do not use this appliance if any part has been submerged under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been submerged underwater NOTICE TO INSTALLER Installer is advised to follow carefully all instruc tions and warnings in this manual to insure maximum performance safety and operating efficiency of these appliances Improper instal lation may create hazardous conditions and will void the appliance warranty 1 SPECIFICATIONS General Description M1 Series gas and oil furnaces are listed direct vent sealed combustion downflow heating appliances for manufactured mobile homes recreational vehicles and for use i
36. a floor duct system g Wiring materials located in the return duct system shall conform to Articles 300 22 of the National Electrical Code ANSI C1 NFPA 70 4 ROOF JACK SLANT DECK PITCHED FLASHING ROOF Y X SEE TABLE 1 CEILING ES cavity 4 A RooF Y OPENING CEILING B lt Combustion Y iq Air Pipe A Furnace 56 or 76 Y Figure 6 Roof Jack Assemblies ee ROOF JACK SLANT DECK FLASHING PITCHED ROOF 6 CEILING CAVITY e CEILING Ni ROOF OPENING CEILING OPENING Figure 7 Example of Flat Jack with Flashing ROOF JACK WITH ED 2 12 12 SLANT FLASHING 2122 SLANT DECK 5 12 ROOF SLOPE Figure 8 Example of 272 12 Slant Jack 7 Gas piping is not run in or through the return duct system Test the negative pressure in the closet with the air circulating fan operating at high speed and the closet closed The negative pressure is to be no more negative than minus 0 05 inch water column Air conditioning systems may require more duct register and open louver area to ob tain necessary airflow Use NORDYNE s certiduct program to determine proper duct size for A C 8 AIR DISTRIBUTION SYSTEMS For proper air distribution the supply duct System must be designed so tha
37. d the neutral wire to the WHITE pigtail lead Secure all connections with suitable wire nuts d Connect the ground wire to the grounding Screw e Reinstall the control panel cover and secure with the original mounting screws CONNECT THERMOSTAT WIRES a Insert 24 volt wires through the plastic grom met just above the control panel b Connect the thermostat wires to the furnace low voltage pigtails see Figure 25 c Connect low voltage circuit to the wall ther mostat d A hole may be made in the furnace cabinet to ease thermostat wiring Make sure that the wiring is protected from the sharp edge of the added hole NOTE The thermostat should be installed 4 to 5 feet above the floor on an inside wall which is relatively free from direct sources of heat or COMPLETED ASSEMBLY V TO FURNACE Figure 24 15 cold drafts The nominal anticipator setting is 0 4 Refer to the thermostat literature for addi tional information Five conductor thermostat wire is recom mended for 24 volt low voltage circuit 2 wire is required for furnace only 5 wire for heating and optional cooling systems For Platinum ready Construction a Use a heat cool thermostat b Run thermostat wire from the Thermostat to the Furnace see Figure 39 c Using thermostat wire with at least two wires four wire is recommended run thermostat wire from the Furnace to the intended loca tion of the Platinum series unit Leave a
38. ds EX Gas Control Lever Pilot Adjustment Figure 28 Standing Pilot Valve Pilot Bracket Figure 29 Lighting Furnace 21 e When the call for heat is satisfied the thermo stat contacts open the gas valve shuts off gas flow and the induced draft blower stops GENERAL DIRECT IGNITION MODELS Read safety information on front page of these installation instructions before operating fur nace DO NOT ATTEMPT TO OPERATE FURNACE IF YOU SMELL GAS Operating instructions for M1M MODELS WITH DIRECT IGNITION a STOP Read the SAFETY INFORMATION b Set the thermostat to the lowest setting c Turn off all electric power to the appliance d This appliance is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand e Honeywell push in the gas control knob and turn clockwise to OFF Robertshaw push the gas control lever to OFF NOTE The lever cannot be placed in the OFF position unless it is pushed in slightly DO NOT FORCE See Figures 30 amp 31 GAS CONTROL KNOB Figure 30 Direct Ignition Gas Valve Honeywell Gas Control Figure 31 Direct Ignition Gas Valve Robertshaw 22 f Wait ten 10 minutes to clear out any gas If you smell gas STOP and follow step d in the SAFETY INFORMATION section If you do not smell gas go to the next step g Set the On Off switc
39. e with liquid petroleum L P gas The gas supply to your home will either be Natural Gas or L P bottle gas Your furnace is factory equipped to operate on Natural Gas If your gas supply is L P bottle gas you must contact a qualified serviceman or gas supplier to convert the furnace The necessary instruc tions for the gas conversion are found on the lighting instruction label attached to the furnace in Section 16 Service Guide 4 Thermostat Wires Blower Plug Power Entry On Auto Furnace VY Control Box To Combustion Blower or Flame Roll Out Switch Switch Heating Models Only To Gas Valve or Burner Figure 25 Control Panel All Models For natural gas operation the furnace is de signed for 7 W C inlet pressure Pressure is reduced to 3 1 2 W C by the pressure regu lator in the gas valve The maximum inlet pressure for the valve is 13 W C For L P gas pressure to the gas valve must be more than 11 W C but not more than 13 W C Pressure is reduced to 10 W C by the pressure regulator in the gas valve N CAUTION The furnace must be converted by a qualified technician Improper conver sion can cause unsafe operation ex plosion fire and or asphyxiation Oil Tank and Piping Installation The following procedures are recommended as good pract
40. eaks in the heating duct system Check the room thermostat to be sure the setting is not higher than necessary Low humidity requires higher temperatures for the same level of comfort Check for proper humidity level in the home TROUBLESHOOTING DIRECT IGNITION FURNACES INCLUDING GAS GUN Burner Motor Does Not Run Thermostat Calls For Heat a Check the electrical supply to the furnace b Be sure the furnace On Off switch is in the ON position c Defective thermostat circuit white and red thermostat low voltage leads M1M M1B models If the burner motor or combustion fan runs check Thermostat connections Thermostat d No voltage to control module determine if 24 volts or 120 volts is available to the control module If voltage is not available check for Blown fuse defective transformer circuit breaker no electrical supply Limit switch open Loose connections Combustion Blower Does Run No Flame a Defective centrifugal switch M1B Model Check the operation of centrifugal switch by removing end bell of the burner motor Clean contacts of motor e If the contacts are closed replace the motor b Defective pressure switch M1M and M1G 077 090 Models check air tube and elec trical connections c Burner in purge mode allow 75 seconds for flame establishing period d Check for proper electrical connections at purge timer control box or gas valve
41. er installation furnace adjust supply pressure to the furnace ments improper operating procedure on the 6 Providing instructional training on how to part of the user etc light and operate the furnace 7 Furnace problems caused by installation of Some specific examples of service calls which an air conditioner heat pump or other air cannot be included in warranty payments are comfort devices 8 Adding a Roof Jack extension because of 1 Converting the furnace to use another type unusual wind and or snow conditions of gas 9 Revising installation of the furnace flue as 2 Repairing duct work in the home found to be sembly Roof Jack faulty 10 Adjusting or calibrating of thermostat 3 Correcting wiring problems in the electrical 11 Any construction debris which falls into flue circuit supplying the furnace system 4 Resetting circuit breakers blown fuses or other switches Furnace Input Output Orifice No E S P Pilot Ignitor a A C Ready Model No MBtu h MBtu h Nat LP In WC Burner Direct Blower D Tons 56 45 29 45 0 3 X 29 45 0 3 M1GH 056 1 8 2 M1GBO056 56 45 x 1 4 3 M1GC 056 56 45 29 45 x 1 2 4 1 056 56 45 29 45 x 3 4 5 70 70 57 24 42 x 15 27 070 70 57 24 42 1 4 3 MiGC 070 70 57 24 42 x 1 2 4 MiGD 070 __ 70 57 24 42 x 3 4 5 M1GH 077 77 62 21 40 X X 1 4 1 077 77 62 21 40 1 4 3 M1GC 077 77 62 21 40 x x 1 2 4 M1GD 077 77 62 21 40 x x 3 4 5
42. h an approved tape for a leak free joint INSTALL FURNACE a Remove furnace outer door s and bottom fuel line knockout b Place furnace onto duct connector and cen ter with floor opening c Slide onto mounting plate Bottom rear slots on furnace should engage with mounting plate tabs d Secure front with one 1 fastener at each corner See Figure 19 or 20 NOTE Additional fasteners may be used at rear sides or through door frame as desired to secure furnace to closet or alcove framing INSTALL ROOF JACK Apply caulking compound on underside of roof flashing to form a continuous strip at least 3 8 wide see Figure 21 around the underside of the perimeter of the flashing Connect Roof Jack Assembly to the furnace Insert telescop ing Roof Jack Assembly through the opening cut on the roof Connect flue pipe to flue collar of furnace Connect combustion air pipe to furnace collar with sheet metal screw See Figure 22 It is recommended that the connec tion of the combustion air pipe to the furnace be made before the flashing is secured to the roof to maintain alignment of roof jack and furnace connections NOTE For replacement furnaces be sure the inner flue pipe connects over the furnace vent collar DO NOT use a smaller diameter inner flue pipe which could slide inside the fur nace vent collar and restrict the flow of furnace flue products Attach Roof Flashing If necessary shift roof flashing slightly i
43. h to the ON position h Honeywell turn knob on gas control counter clockwise to ON Robertshaw push the gas control lever to ON i Turn on all electric power to the appliance j Replace the furnace door k Set the thermostat HEAT and the desired temperature setting The furnace should light after approximately 75 seconds If the appli ance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier In the event of any flashback or explosion immediately shut off the furnace and call your service technician TO TURN OFF GAS APPLIANCE a Set the thermostat to the lowest setting b Turn off all electric power to the appliance before servicing unit c Set the ON OFF switch to OFF d Honeywell push in the gas control knob and turn clockwise to OFF Robertshaw push the gas control lever to OFF e Replace the furnace door SEQUENCE OF OPERATION FOR MiM MODELS WITH DIRECT IGNITION Direct ignition model furnaces do not have a pilot Ignition is accomplished automatically by a silicon carbide hot surface ignitor A control module takes care of all timing functions After lighting the control module uses the ignitor as aflame sensor shutting off gas should the flame go out There are no external relays or timing devices Do not try to light this furnace manually The control module is not field serviceable a
44. ice However requirements of local codes and ordinances H U D Manufac tured Home and Safety Standards or National Fire Protection Association must be satisfied where they apply for an approved installation Wire Gauge Length Unit to T STAT 2 Wire Heating 5 Wire Heating Cooling Table 8 Thermostat Wire Gauge Use a tank capacity suitable for the application with a weatherproof capped fill opening and shielded vent to let in air as fuel is used The tank must be clean inside before filling All water rust sediment and other foreign matter must be flushed out A fuel or tank gauge is recommended for easy checking of the fuel level Check the gauge reading with a dipstick Locate the storage tank conveniently near the home For above ground fuel tank installations the tank may rest three to four inches off the On Off Fan Switch Control Panel Alt Fuel Line Entry Figure 26 Typical Gas Piping 17 Ajddng eur1 o Buis punous 101 7 2 eunpeooud ye d pue uod eoejdeu uod doi SSRs jan Bunoefur Aq euuud AAD 10014 jan e ue1u8n pue sxee loj ee 10 yip Sjrej 1an Jeuing uno 0 sseq Ag ___ _ 7
45. installer service agency or the gas supplier LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER TABLE OF CONTENTS 1 SPECIFICATIONS 2 OWNERSINFORMA TION eu MANUFACTURER WARRANTY OWNER RESPONSIBILITY 4 INSTALLATION STANDARDS Prec PR 6 MINIMUM CLEARANCES 7 RETURN AIR PROVISIONS 8 AIR DISTRIBUTION SYSTEMS 9 10 DUCT CONNECTOR SELECTION secs 11 INSTALLATION 11 12 INSTALLATION OF TRANSIT MODE VENTING SYSTEM 14 19 14 FUEL PIPING 16 15 FEUE GAS SAMPLING coches ca 19 16 LIGHTING AND FURNACE SHUT DOWN iiid oin cu a ciini ne 20 17 SERVICE GUIDE meme suu 25 BURMA ie ce PT 30 19 OPTIONAL ACCESSORIES tatoo tanen rect ad tame 31 20 WIRING DIAGRAMS nsus tutu cuam NM 34 39 21 EQ
46. ll return to normal operation and repeat ignition sequence when the false flame is not present d Fourflashes the control is in lockout due to a failure within the control board Control Module Status Indicator M1S Series The indicator light on the oil primary control provides lockout recycle and cad cell indications as follows 1 Flashing 1 2 second on 1 2 second off system is locked out or in restricted mode 2 Flashing 2 seconds on 2 seconds off control is in recycle mode 3 Indicator light is on cad cell is sensing flame 4 Indicator light is off cad cell is not sensing flame may be defective Replace the gas valve if necessary e Be sure the pilot shield is in place Check for gas leaks in the pilot line or the pilot assembly g Check the flue assembly to make sure all connections are tight h See the FURNACE START UP procedure for lighting details Main Flame Is Not Burning Properly a Check the manifold gas pressure b Check for the correct main burner orifice See the nameplate SPECIFICATION 28 C d Check the flue for any blockages or loose connections Checkthe combustion air passages for block age High Gas Bills a b Be sure the proper orifices are being used Be sure the return air system is clear and free of blockage Be sure the furnace filter is clean Be sure the home is insulated that windows and doors fit tightly and that there are no l
47. lose hinged fire door If fire door is open or spring is broken it may allow products of combustion into the living space by the furnace blower resulting in possible asphyxiation In the event of any flashback or explosion immediately shut off the furnace and call your service technician TO TURN OFF GAS TO APPLIANCE a Set the thermostat to the lowest setting b Turn off all electric power to the appliance at breaker or fuse box before servicing c Remove the furnace door d Push in the gas control lever slightly and move to the left to OFF DO NOT FORCE Replace the furnace door D SEQUENCE OF OPERATION FOR STAND ING PILOT a b On a call for heat the thermostat contacts close supplying 24 VAC to the gas valve When the gas valve is energized it steps open at a reduced flow and opens fully after approximately 14 seconds When the call for heat is satisfied the thermo stat contacts open the gas valve shuts off gas flow SEQUENCE OF OPERATION FOR STAND ING PILOT WANDUCED DRAFT BLOWERS MODELS a b d On a call for heat the thermostat contacts close supplying 24 VAC to the relay The relay contacts close and energize the induced draft motor When the inducer starts the air pressure switch closes at 0 20 WC differential pres sure and energizes the gas valve When the gas valve is energized it steps open at a reduced flow and opens fully after approximately 14 secon
48. lve if applicable and fuel line connections for leaks Make any adjustments necessary for good operation A WARNING Use of furnace or air conditioning com ponents that are not included in the certification of this appliance may cre ate a hazard invalidate the certifica tion and in many states make instal lations illegal Listed NORDYNE air conditioning components are speci fied on the furnace label ADDITIONAL OIL FURNACE MAINTENANCE In addition to the preceding the following should be performed by a qualified service contractor at least once each season for oil fired furnaces a Replace the oil nozzle with the type nozzle specified for your furnace b Clean adjust and replace if necessary the D spark electrodes Reset the nozzle drawer assembly to fac tory specifications Clean the inside of the furnace heat ex changer and replace the combustion liner if necessary Cleanorreplace the oil filter elementatthe oil tank Adjustthe burner for top efficiency and check to make sure all fittings are leak tight 19 OPTIONAL ACCESSORIES Necessary when the Furnace is Used with Some Central Air Conditioners If an air conditioner is installed that does not use the furnace blower for air distribution and that operates independently of the furnace the thermostat system must have an interlock to prevent the furnace and air conditioner from operating at the same time
49. n 1 8 MAINTENANCE By Homeowner 1 N Return On some closet installations the return air opening to the furnace may be on the floor on the door on the side wall of the closet or some combination of these The upper grille on the front of the furnace admits return air to the blower Return air must be provided back to the circulating blower in order to provide air distribution Filters At least twice each season more often in dusty areas remove and clean the air filters with a vacuum or with warm water and soap Reinstall when dry Also clean dust and lint around furnace and in the fur nace vestibule Figure 35 Seasonal Service Information During ex tremely cold weather ice may form on the furnace roof jack Small amounts of ice form ing on the roof jack will present no problems to proper furnace operation Excessive ice formation could restrict the combustion air supply to the burner causing inefficient burner operation If excessive ice has formed on the air inlet or exhaust portions of the roof jack it must be carefully removed Figure 36 By Serviceman All furnaces need periodic service at the begin ning of each heating season Call your service man to Remove the air circulator and clean all dust and lint from the unit with a stiff bristle brush Inspect the combustion chamber blower compartment flue collar and Roof Jack Check the gas va
50. n air and will settle on the floor If you smell gas STOP and follow the safety instructions below If you don t smell gas go to the next step Set the thermostat to the lowest setting Turn off all electric power to the appliance This appliance is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 5 Honeywell push in the gas control knob and turn clockwise to OFF Robertshaw push the gas control lever to OFF NOTE The lever cannot be placed in the OFF position unless it is pushed in slightly DO NOT FORCE See Figures 30 amp 31 6 Waitten minutes to clear out any gas If you then smell gas STOP and follow the safety information on the preceding page If you don t smell gas go to the next step 7 Set the On Off switch to the ON position 8 Honeywell turn knob on gas control counter clockwise to ON Robertshaw push the gas control lever to ON Turn on the electric power to the appliance 10 Set the thermostat to Heat and or the desired temperature setting The furnace should light in approximately 45 seconds If the appliance will not operate follow the instructions To Turn Off Gas To Appli ance and call your service technician or gas supplier the event of any flashback or explosion immediately shut off the furnace and call your service technician SEQUENCE OF OPERATION FOR GAS GUN MODELS a On a call f
51. n residential modular commercial construction The furnace must be located so that venting can be properly achieved Air conditioning may be addedto structures with M1 series furnaces using Platinum series air conditioning or conventional units This Instal lation Instruction manual includes special re quirements for incorporation of air conditioning equipment to the M1 series of furnaces Multi speed blower assemblies as shown in Table 3 have been certified for field installation in M1 Series furnaces An air conditioner can be easily field installed with M1GH Series furnaces if used in conjunction with certified 2 wire relay box p n 9030924 or 4 5 wire relay box 902898A 2 OWNERINFORMATION ABOUT YOUR CENTRAL FURNACE SYSTEM NORDYNE has been involved in the design of products for the manufactured home industry since the first manufactured home or trailer was built NORDYNE originated the sealed combustion System which separates the furnace combus tion system from the living area of the home now a standard for the manufactured home industry NORDYNE engineers developed the first cen tral heating system and the first central air conditioner for manufactured homes NORDYNE is dedicated to bringing to its cus tomers the finest heating and cooling comfort possible NORDYNE constantly seeks to fur ther refine its products to continuously provide exceptional comfort Follow the instructions in this booklet carefully a
52. n the roof opening so that assembly is in good alignment with furnace Press down firmly over caulking on roof flashing to make the seal with roof water tight Secure flashing with appropriate fasteners As an STEP 1 Fold Back Flap B STEP 2 Fold Back Flap B Cut Area A Area A Top of Duct Fold Back B Bend Duct Connector Tabs Up and Over along length of duct STEP 3 Fold Back Flap B Staple Folded Duct Flap typ to side of Duct Connector STEP 4 Figure 18 13 SLIDE FURNACE ALL THE WAY BACK MTG PLATE Poe See ae 5522111 2 7 44 SECURE FURNACE 2 FASTENERS AT FRONT CORNER HOLES xA J SUPPLY AIR DUCT Figure 19 A B amp Platinum Cabinet Furnaces SLIDE FURNACE ALL THE WAY BACK ONTO MTG PLATE Figure 20 A Cabinet Furnace on 911969 Coil Cabinet Non Platinum Series Secure Roof Jack with appropriate fasteners after connecting to furnace Caulk under roof flashing to prevent water leakage Optional 901943 Ceiling Trim Ring or 902521 2 piece Ceiling Ring Connect outer flue shield Figure 22 added protection against leaks coat the flash ing plate and fasteners with approved roofing compound If flashing mounted on 12 degree angle is used it may be necessary
53. nd this appliance will provide many years of superior performance If you wish to cool your home automatically with a central air conditioning system investigate the excellent NORDYNE cooling systems avail able from your heating and cooling contractor These systems are designed to work best with your NORDYNE furnace and have been care fully engineered to deliver optimum performance when mated with NORDYNE manufactured home furnaces NORDYNE also offers water heaters fire places and ventilating systems specifically de signed for manufactured housing applications Check with your manufactured home retailer your heating and cooling contractor or your distributor for information Write directly to the factory PO Box 46911 St Louis MO 63146 if you are not able to locate a source for NORDYNE manufactured housing products in your area 3 MANUFACTURER WARRANTY OWNER S RESPONSIBILITIES It is the sole responsibility of the homeowner to make certain the gas furnace has been cor rectly set up and converted to the proper fuel L P gas or Natural gas and adjusted to oper ate properly All gas furnaces are manufac tured for Natural gas and must be field con verted when using L P gas A warranty certificate with full details is included with these instructions However NORDYNE will not be responsible for any costs found necessary to correct problems due to improper 5 Correcting problems due to improper gas setup improp
54. or heat the furnace control begins an ignition sequence which lasts approxi mately 45 seconds b After this sequence the control module tests to see if flame is sensed If it has the furnace continues to heat until the thermostat is satisfied 24 c If the burner has not lit the ignition sequence is repeated a maximum of two more times If flame is not sensed after three attempts the control enters Lockout and no further at tempts to light the burner will occur Lockout occurs contact a qualified service technician for assistance N DANGER Before placing the furnace in service it must be checked to make sure it is equipped for the type of gas being used The burner flame must also be observed and adjusted if necessary Failure to observe this caution may result in unsafe operation explosion and or fire or asphyxiation See the following sections Gas Supply and Combustion Air d When call for heat is satisfied the thermostat contacts open and the gas valve shuts off gas flow TO TURN OFF GAS OIL APPLIANCE a Set the thermostat to the lowest setting b Turn off all electric power to the appliance before servicing unit c Set the On Off Switch to OFF d Honeywell turn gas control knob clockwise to OFF Robertshaw Push the gas control lever to OFF For oil shut off all valves Replace the furnace door gt o THE FURNACE CONTROLS AND FUNC TIONS
55. r Motor Assembly A C Capacity Blower Wheel Motor Hp Ton 903773 2 2 amp 8 903413 2 27 384 903414 2 27 3 485 Table 3 Field Installation Blower Assemblies Carefully review these responsibilities with your manufactured housing dealer service com to pany or gas supplier so there will be no misun 6 152 mm Top Clearance derstanding at a later time N CAUTION C Removable access Never attemptto alter or modify this reed fumace door frame Cabinet to access roof jack furnace or any of its components Never attempt to repair damaged or inoperable components Such action could cause unsafe operation explo sion fire and or asphyxiation If a malfunction has occurred or if you feel that the furnace is not oper ating as it should contact a qualified WA AI 4578 Nearest Wall or Partition Ww service agency or gas utility for as Sq in 1816 om Top Clearance zu open free area in sistance front or or side wall B or 5 n closet oor 4 INSTALLATION STANDARDS located Si t Installer shall be familiar with and comply with all or bottom codes and regulations applicable to the instal lation of these heating appliances and related equipment In lieu of local codes the installation shall be in accordance with the current provi sions of one or more of the following standards 4 ne
56. reset safety switch located on the bottom left hand side of the combustion pipe 5 Oil Burner Primary Control The primary control for oil gun furnaces starts the burner monitors a safe operating cycle and shuts the burner off at the end of a heating cycle The control uses a light sensing transducer to determine if fuel ignition has been suc cessfully attained If ignition is not attained by the end ofthe safety ignition timing period the control shuts the burner off and enters lock out 6 a Summer Cooling H Series Your fur nace is equipped to operate the circulating fan only Turn the Fan On Auto switch to the ON position during warm weather The blower will now operate to circulate air in your home through the duct system b Summer Cooling A B C amp D Series Your furnace is A C ready equipped with A C relay and transformer The unitis equipped to use a 4 wire thermostat When using a 5 wire thermostat RC and RH should be jumped see instructions included with ther mostat 17 SERVICE GUIDE BURNER ADJUSTMENTS Burner settings and adjustments are made at the factory However these settings may change during shipping handling and installa tion Therefore the following items should be checked and readjusted if necessary Atmospheric Gas with Standing Pilot and Direct Ignition Furnaces Including Gas Gun a Gas Pressure The gas pressure can be checked with a manometer at the pressure
57. rs DO NOT connect a ducted return air system di rectly to the furnace Improper installation may create a hazard and damage equipment as well as void all warranties Furnace may be installed on combustible floor ing when using NORDYNE Duct Connectors see Section 10 When installed in a residential garage the fur nace must be positioned so the burners and the source of the ignition are located no less than 18 inches above the floor and protected from physical damage by vehicles ALL MODELS Front Back Sides Roof Jack Top Top and Sides of Duct Bottom of Duct B Cabinet A Cabinet w coil box A Cabinet w o coil box Table 4 Minimum Clearances 6 MINIMUM CLEARANCES This heating appliance must be installed with clearances not less than the minimums shown in Table 4 This heating appliance must be installed with ample clearance for easy access to the air filter blower assembly burner assem bly controls and vent connections Alcove installations see Figure 2 minimum 18 clearance at front of furnace shall be provided for future servicing A removable access panel should be installed between top of the furnace door frame and the ceiling Closet installations must use a louvered door having a minimum free area of 235 sq in when located 6 from furnace See Figure 3 or 390 sq in for 5 ton ready M1 furnaces For special clearance between 1 and 6 quirements are a louvered door wi
58. ructions before lighting furnace DO NOT ATTEMPT TO LIGHT FURNACE IF YOU SMELL GAS SAFETY INFORMATION FOR YOUR SAFETY READ BEFORE LIGHT ING a The first lighting of the furnace after any o home setup must be performed by a qualified service technician If this appliance has a pilot that must be lit by hand follow these instructions exactly BEFORE LIGHTING smell all around the furnace for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor 20 WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch and do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas suppliers instructions If you cannot reach your gas supplier call the fire depart ment Useonly your hand to push in the gas control lever Never use tools If the lever will not push in by hand don t try to repair it Call a qualified service technician Force or at tempted repair may result in a fire or explo sion Do not use this furnace if any part has been under water Immediately call a qualified service technician to inspect the furnace and to replace any part of the gas valve or control system which has been under water LIGHTING INSTRUCTIONS FOR STAND ING PILOT MODELS Stop Read the safety information Set the thermostat to the lowest setting
59. t or alcove along the center line of furnace and floor opening See Figure 13 MOUNTING PLATE FLOOR REAR WALL CUT DUCT OPENING 1 16TH LARGER THAN DUCT CONNECTOR Figure 14 Mounting Plate UNDER DUCT OPENING D PATUIT MOUNTING OPENING FUEL LINE HOLES Non Platinum Series SCREWS MOUNTING 7 PLATE Ne DUCT lt cm 4 SUPPLY Platinum Series CONNECTION Figure 15 Duct Connector 11 b Cut ceiling and roof holes as follows Ceiling Hole 8 3 4 222 mm diameter Roof Hole 9 3 8 238 mm diameter c DO NOT ALLOW DEBRIS TO FALL INTO THE FURNACE THIS COULD CAUSE UNSAFE OPERATION AND VOIDS THE FURNACE WARRANTY Use the top cap that comes with the furnace packaging or alternate protector to prevent debris from falling into the furnace before the final roof jack connection is made CUT DUCT OPENING FINGER TABBED ONLY a Place duct connector through the floor open ing with bottom tabs resting on top of the supply air duct b Center duct connector and push back against rear edge of floor opening c Mark cut out location tab area and remove duct connector d Cut out duct opening 1 4 larger than area marked INSTALL FURNACE MOUNTING PLATE a Place mounting plate supplied within duct connector at rear of the floor opening See Figure 15 INSTALLING PLATINUM SERIES 14 ROUND D
60. t the static pressure measured external to the furnace does not exceed the listed static pressure rating shown on the furnace rating plate Location size and number of registers should be selected on the basis of best air distribution and floor plan of the home N CAUTION HAZARD OF ASPHYXIATION Do not cover or restrict return air opening 9 ROOF JACK SELECTION Note Install only Roof Jack Assemblies listed in Table 5 on this heating appliance a Determine depth of ceiling cavity from center of roof opening to center of ceiling opening See Dimension A in Figure 6 Determine ceiling height and subtract height of furnace See Dimension B in Figure 6 Add dimensions A B and X from Table 6 and Figure 7 if slant deck flashing is used The total length of A B X must be within the minimum and maximum range of one of the Roof Jacks listed in Table 5 O APPLICATION NOTES a FAW FAWT SAW and SAWT Series Roof Jacks with a 5 diameter inner vent pipe may be used with all models of M1 Series gas and oil furnaces b F Flat Flashing flexes from 0 12 to 1 12 roof slope c S Slant Flashing 2 5 12 Slope flexes from 1 12 to 4 12 roof slope 4 12 flexes from 3 12 to 5 12 d Stainless steel roof jacks are available e If the roof jack crown is covered or blocked with snow the furnace will not operate prop erly If the home is located in regions where snow accumulation exceeds 7
61. tap located on the side of the gas valve The gas valve pressure regulator can be adjusted by re moving the regulator selector stack and turning the slotted insert located directly under the selector stack The regulator selector stack must be secured in place before each pressure reading is taken Natural gas manifold pressure should be 3 5 W C and L P gas manifold pressure should be 10 W C Replace the gas pressure tap plug on the gas valve b Pilot Flame Standing Pilot Only The pilot flame can be adjusted by turning the pilot adjustment screw located on top of the gas valve See Figure 29 The pilot flame height should be between 3 4 and 1 The flame tip should be visible just above the pilot bracket when viewed through the observa tion door The same pilot orifice is used with both natural and L P gas COMBUSTION AIR In order for the flame to burn efficiently it must receive adequate combustion air The amount of combustion air required will vary depending on altitude actual B T U content of the fuel being used gas pressure conversion to an other gas and other factors The burner flame should be observed and any necessary adjust ments made before the furnace is placed into service See Table 9 for Factory Air settings Gas Gun Combustion air adjustment is made to the main burner by loosening the lock nut on the plastic air shutter located on the side of the plastic burner air inlet box Move the threaded rod
62. tdown 7 Insert the short length of the copper tube level with the bottom of the duplex bushing Form the tube into an inverted U to serve as a vent How to Eliminate Air Leaks To eliminate problems caused by air in the oil line all connections in the oil supply line and all plugs nuts and fittings on the pump must be airtight This includes the nut that covers the pressure adjustment It is important that the hook up be done carefully and with a good flaring tool To assure continuous operation use a wire to jump terminals T T or F F on the primary control while burner is running If furnace is equipped with the Honeywell R7184 primary control priming oil pump procedure is as fol lows 1 While the ignition is on press for 1 2 second or less and release the reset button The lockout time will be extended to 4 minutes If prime is not established within the 4 min utes the control will lock out Press the reset button to reset the control Repeat steps 1 and 2 if needed until the pump is fully primed N When oil flow is clear and free of air bubbles close air bleed valve and tighten Time to bleed air out will vary depending on length of oil line number of bends etc Fuel Oil Type Do not use fuel oil heavier than Grade No 2 Grade No 1 may be used where the oil supply is subject to low temperatures DO NOT USE GASOLINE CRANKCASE OIL OR ANY OIL CONTAINING GASOLINE
63. th a mini mum of 250 sq in free area with the open ings in the closet door in line with the louvered openings in the furnace door A fully louvered closet door may be used See Figure 4 and section 7 1 to evaluate compliance with this requirement 7 RETURN AIR PROVISIONS U S A home manufacturers shall comply with all of the following conditions to have acceptable return air systems for closet installed forced air heating appliances N CAUTION HAZARD OF ASPHYXIATION Nega tive pressure inside the closet with closet door closed and the furnace blower operating on high speed shall be no more negative than minus 0 05 inch water column A Single trunk duct Dual trunk duct N w crossover connector Transition duct w branches ae 0 Figure 5 Non Platinum Supply Duct System a Regardless of the location the return air opening into the closet shall not be less than specified in the appliance s listing b Means shall be provided to prevent inadvert ent closure by a flat object placed over the return air opening when itis located in the floor of the closet versus the vertical front or side wall c The cross sectional area of the return duct system leading into the closet when located in the floor or ceiling shall not be less than 235 square inches or 390 square inches for
64. the return line up through the furnace base to the return port of the pump Run the other end of the line to the tank using 3 8 O D copper tubing or 1 4 pipe with the ends capped and routing the line so it stays clean 4 Insert the return line through the second opening in the duplex bushing If the bottom of the tank is lower than the pump intake the tube should be inserted three or four inches from the tank bottom If the bottom of the tank is higher than the pump intake the return line should extend not more than 8 inside the tank If a two pipe system is used or if oil is taken from the bottom of the tank a filter is recommended Hook Up Procedure See Figure 27 1 Use a 3 8 O D copper tubing for the fuel line Cap the end with tape to keep out dirt while the line is being routed 2 Install duplex bushing for two 3 8 lines in the top fitting of the tank Insert one end of the tubing through the duplex bushing until it is three to five inches from the bottom drain Tighten the bushing 4 Run the line where it will not be subject to damage Also make bends gradually and avoid kinks which might restrict oil flow 5 Open the furnace door Connect the oil line to the intake port on the pump Tighten other port plugs on the pump 6 Be sure oil line is airtight Air leaks can cause the pump to lose prime and will create other problems such as nozzle failure odors rum bling noise and false safety shu
65. tleast six feet of extra thermostat wire at the in tended location for future hook up Coil re maining six feet of wire and attach to the home s undercarriage Once the furnace is installed check the thermo stat anticipator against the nominal setting of 0 4 1 Connect the milliamp meter in series with one of the gas valve s low voltage terminals 2 Energize the gas valve 3 Read the value of the milliamps 4 Adjust the heat anticipator of the thermostat to the value read on the milliamp meter If the heat anticipator is set too high the furnace may delay in coming on If the heat anticipator is set too low the furnace may cycle frequently and not provide comfort to the homeowner 14 FUEL PIPING Sizing and installation of fuel lines must be in accordance with federal state and local regu lations All piping shall be black iron pipe or equivalently sized steel tubing Internally tinned copper tubing may be used for gas supply systems Fuel line installations other than typical installa tions shown in Figures 26 and 27 must comply with the fuel piping provisions stated in the Federal Manufactured Home Standard H U D TITLE 24 PART 280 and the National Fuel Gas Code ANSI Z223 1 NFPA 54 a Optional fuel inlet lines are available for all gas furnace models to permit the addition of a 1 2 F P T shut off valve above the floor NOTE Shut off valve must be designed and listed for us
66. to adjust the angle to match the roof pitch 1 12 4 12 maximum 12 INSTALLATION OF TRANSIT MODE VENTING SYSTEM MANUFACTURED HOME FACTORY a Furnace to be installed per furnace installa tion manual b Roof Jack to be selected from Table 5 of these instructions c Roof Jack less upper Roof Jack crown with weather cap to be installed as described under Install Roof Jack d Upper Roof Jack crown to be stored in a prominentlocation inside manufactured home until on site installation e The four warning tags supplied must be installed as follows To weather cap To fuel line connection point Gas furnace burner Oil To furnace flame observation door Gas or Oil To furnace wall thermostat MANUFACTURED HOME SITE a Transit mode weather cap to be removed and upper Roof Jack crown installed See Figure 24 b Place upper Roof Jack crown on to the flue pipe assembly Be sure inside flue pipe attaches over inner flue pipe Be sure outer Roof Jack pipe fits over outer pipe Secure in place using three 3 10 1 2 sheet metal screws removed in step a Do not use the same holes which secured the rain cap in place Upper Roof 1 Jack Section Secure lower roof jack section with no 10 S M screws Optional Slant Deck Flashing lt Secure flashing with appropriate Caulk under roof flashing to prevent water leakage t
67. urns on but control locks out again check cad cell if cad cell is Okay replace primary control 3 If indicator light continues to flash at 1 2 second on 1 2 second off verify that control is not in restricted mode If restricted mode reset it If not in re stricted mode replace R7184 4 Ifindicator light stays off while the flame is on check cad cell sighting for view of flame 5 If burner locks out check cad cell resistance See Table 10 6 If burner keeps running system is Okay 7 If indicator light is off check cad cell assembly after disconnecting line volt age power b Burner will not start and indicator light is flashing at 2 second on 2 second off Hold the reset button down for 1 2 second If indicator light continues to flash wait for 60 70 seconds If it still continues to flash replace the primary control c To check cad cell resistance Press and release the button during the run mode The light will flash to indicate the cad cell resistance For proper burner operation it is important that the cad cell resistance reaover 1600 Ohms For cad cell resistance see Table 10 Figure 35 Periodic Cleaning Check for Ice Here Figure 36 Roof Jack A WARNING Do not obstruct any return air open ings including the grille on the fur nace To do so may cause the furnace toactivate the high limitand shutdown or it may cause asphyxiatio
68. y using sheet metal screws or other suitable fasteners See Figure 17 If sealant mastic or tape is used to provide a better seal it should be approved by applicable national or local codes ALTERNATE ATTACHMENT METHODS This procedure may also be used to install a furnace duct connector to narrow metal ductwork where insufficient clearance prevents HL 1 INSERT DUCT CONNECTOR INTO DUCT CUT OUT 2 BEND BOTTOM TABS OVER AND ONTO THE UNDERNEATH DUCT SERVICE Figure 16 Installation of Duct Connector Duct Connector Narrow Duct Duct Figure 17 bending of the duct connector tabs at the side s of the duct See Figure 18 1 Score and cut the top of the metal duct as indicated in Step 1 or Step 2 With Step 1 choice also cut out the metal from the shaded area A 2 Fold the duct flap B up See Step 3 3 At the front to back of duct run Area A bend the duct tabs and secure them directly to the duct 4 At Area B bend the duct tabs up and back over around the duct connector See Step 3 5 Fold form the duct flap against the side of the duct connector and attach as shown See Step 4 Use three 3 staples minimum on each duct flap OR if a 2X block joist is not provided use two 2 sheet metal screws minimum on each duct flap An alternate attachment method is acceptable as long as the duct connector is securely attached 6 Tape the duct flap edges wit

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