Nordyne M2RC-080, Installation Instructions Manual

Page 1: ...gency or the gas supplier Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Downflow Model Do not try to light any appliance Do not touc...

Page 2: ...Voltage Wiring 25 Ventilation 26 Start up and Adjustment 26 Start Up Procedure 26 Shut Down Procedure 26 Verifying and Adjusting Firing Rate 26 Verifying and Adjusting Temperature Rise 27 Verifying B...

Page 3: ...oil Box 27 5 8 Gas Connection Condensata Drain Outlet Downflow Furnace i Combust cm Air Inlet I i _ i I Exhaul_ _ _ _ i 2 _l_ 24 718 1 I 2 T 21 114 _ t5t 2 o 1111 llt _ 19 3 4 _1 Norton Supply Air O_0...

Page 4: ...1100 High 1910 M2RC 100 100 000 Meal High 1640 53 Med Low 1 2 1440 61 Low 1230 High 1620 32 Med High 1450 36 M2RL_60 60 000 Med Low 1 2 1255 42 Low 1080 48 High 1620 43 Med High 1450 49 M2R L 089 8_...

Page 5: ...nace 4 Resetting circuit breakers blown fuses or other switches 5 Correcting problems due to improper gas supply pressure to the furnace 6 Providing instructional training on how to light and operate...

Page 6: ...the 1430 Broadway Installati0n of Air Conditioning and Ventilating New York NY 10018 Systems NFPA No 90A or the Standard for the Installation of Warm Air Heating and Air NFPA publications are availabl...

Page 7: ...read CAUTION HAZARD OF ASPHYXIATION Do not cover or restrict return air opening k Air conditioning systems may require more duct register and open louver area to obtain necessary airflow Use NORDYNE...

Page 8: ...racket to the A C coil box and the furnace Repeat on the other side of the furnace for the other bracket Attach the plenum from the supply duct to the flanges of the A C coil box Secure the plenum to...

Page 9: ...OR TABS UNDER DUCT OPENING MOUNTING PLATE FLOOR CUTDUCTOPENING a Place duct connectorthroughthe floor b Figure 9 Duct Connector opening with bottom tabs resting on top of the supply air duct Center du...

Page 10: ...o the sides of the duct by using sheet metal screws or other suitable fasteners See Figure 11 if ial_e is used to provide a better seal it should be approved by applicable national orlocal codes ALTER...

Page 11: ...urnace Repeat on the other side of the furnace for the other bracket NOTE Additional fasteners may be used at rear sides or through door frame as desired to secure furnace to closet or alcove framing...

Page 12: ...estriction leakage corrosion and other deficiencies which could cause an unsafe condition c In so far as is practical close all building doors and windows and all doors between the space in which the...

Page 13: ...emettre les ventilateurs d _vacuetion les registres de foyers et tout autre appareil fonctionnant au gaz _ leur etat de fonctionnement initial g Si un appareil n evacue pas correctement _ la suite de...

Page 14: ...gging sections to trap water See Figures 14 15 Figure 16 illustrates vent and combustion air pipe sizes exiting the furnace Transition to the correct pipe size must be done close to the furnace so tha...

Page 15: ...ouplings per pipe are allowed instructions Specifically all minimum distance requirements with respect to termination of the vent piping listed below The following list is a summary of vent terminal l...

Page 16: ...port as close to the furnace as possible Upwa_ Pitch l_ _rFoot Flexible 3 x 2 neducRr to adapt tha 2 diameter vent pipe of furnace to the 3 diameter pipe of the vent Figure 15 Vertical Venting Upflow...

Page 17: ...e area be tween the wall and pipe 3 Apply couplings to the vent pipe on the interior and exterior sides of the wall to insure the pipe can not be pushed or pulled through the wall 4 Insure the combust...

Page 18: ...ey Vent Freezing Protection To prevent condensate icing over extended runs of vent pipe exposed to temperatures Exhaust Vent s Combustion Air Exhaust Plumbing Vent Roof Boot ryp Both Pipes i A 12 Abov...

Page 19: ...long the drain system Insure that all are air tight NOTE Industry research studies indicate that when condensate is routed to an active drain household detergents etc buffer its acidity If the drain i...

Page 20: ...orifice for derate NOTE For Canadian high altitude 2 000 to 4 500 ft simply reduce the gas manifold pressure to 2 8 WC for natural gas and 8 5 WC for LP gas without changing the orifices NOTE The den...

Page 21: ...ess cover plate from the burner box 7 Remove supply gas piping from the gas valve 8 Carefully remove the burner assembly fas teners and remove the bumer assembly from the appliance Keep the fasteners...

Page 22: ...upon the type of conversion sea level or high altitude natural gas or LP gas To Convert the Unit to the Alternate Gas 1 Remove the orifice bag from the manifold of the unit 2 Install the appropriate...

Page 23: ...operates properly Refer to the installation instruc tions provided with your unit for the nor mal operating sequence After the flame ignites visually inspect the burner assembly to ensure that the fl...

Page 24: ...upplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the furnace See Table 11 An electrical switch should be readily accessible from and within sight of the furna...

Page 25: ...ing four wire applications The recommended minimum wire gauge for thermostat wiring is shown in Table 11 The thermostat must not be installed on an outside wall or any other location where its operati...

Page 26: ...are closed If necessary press the red button to reset a switch See Figure 31 for location DO NOT install a jumper wire across a switch to defeat its function If a switch reopens on start up DO NOT re...

Page 27: ...of a gas meter with a 1 cubic foot dial 40 seconds From Table 11 read 90 cubic feet per hour of gas Heating value of the gas obtained from gas supplier 1040 Btu per cubic foot Firing rate 1040 x 90 9...

Page 28: ...emperature and verify that the burner flame extinguishes completely Verifying Operation of the Supply Air Limit Switch To verify operation of the supply air limit switch make surethatthe blower dooris...

Page 29: ...d then remove Reinstall the filter in the reverse man ner Ensure that the filter is centered over the return opening of the furnace and is captured by the fastener at the rear of the furnace For the d...

Page 30: ...until the fault condition clears 4 The inducer is energized 5 The pressure switch will close If the pressure switch does not close after 10 seconds the fault LED will blink 2 times repetitively and th...

Page 31: ...fied delay factory set at 120 seconds Furnace Fails to Operate If the furnace does not operate check the following 1 Is the thermostat operating properly 2 Are the blower compartment door s in place 3...

Page 32: ...29 Motor 1 2 HP 4 Speed Not Shown 30 Access Doors Set Not Shown Upflow Furnace 1 Man_oU DownflowFurnace 2 Flame Sensor Not Shown 3 Gas Valve 4 Roll Out Limit Switch 155 F 5 Pressure Switch 6 Integ rat...

Page 33: ...lame or Gas Valve Relay Shorted Power Off FAULT CONDITION Low Flame Sensor Signal Flame Present LIGHT ON 1 FLASH 2 FLASHES 3 FLASHES 4 FLASH ES 5 FLASHES Continuous OFF FLAME YELLOW LIGHT Continuous F...

Page 34: ...g Manifold Pressure in water column with furnace operating Is there adequate fresh air supply for combustion and ventilation Furnace Input Supply Air Temperature Return Air Temperature Temperature Ris...

Page 35: ...35...

Page 36: ...ll IIIIIilll IIIlllllf IIIII 708120B 708120B Replaces 708120A Specifications and illusb ations subject tochange without notice and without inclJrringobligations Printed inU S A O Fallon MO NORDYNE _ o...