Nordyne M4RC54D-24B Installation Instructions Manual
Nordyne M4RC54D-24B Installation Instructions Manual

Nordyne M4RC54D-24B Installation Instructions Manual

Single stage condensing gas furnaces m4rc series; m4rl series
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Single Stage Condensing Gas Furnaces
INSTALLATION INSTRUCTIONS
M4RC Upflow Furnace
WARNING:
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could
result in serious injury or property damage.
• Installation and service must be performed
by a qualified installer, service agency 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.
WHAT TO 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 building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
M4RL Downflow Furnace
AVERTISSEMENT
RISQUE D'INCENDIE OU D' EXPLOSION
• Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves, la mort ou des dommages matériels.
• L'installation et l'entretien doivent être
effectués par un installateur qualifié, un
organisme de service ou le fournisseur de
gazstaller, service agency or the gas supplier.
• Ne pas entreposer ni utiliser de l'essence ni
d'autres vapeurs ou liquides inflammables
dans le voisinage de cet appareil, ni de tout
autre appareil.
QUE FAIRE S'IL Y A UNE ODEUR DE GAZ
• Ne pas tenter d'allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique;
n'utiliser aucun téléphone dans le bâtiment.
• Évacuer l'immeuble immédiatement.
• Appeler immédiatement le fournisseur de
gaz en employant le téléphone d'un voisin.
Respecter à la lettre les instructions du
fournisseur de gaz.
• Si personne ne répond, appeler le service des
incendies.
92.1% AFUE

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Summary of Contents for Nordyne M4RC54D-24B

  • Page 1 Single Stage Condensing Gas Furnaces 92.1% AFUE INSTALLATION INSTRUCTIONS M4RL Downflow Furnace M4RC Upflow Furnace WARNING: AVERTISSEMENT RISQUE D’INCENDIE OU D’ EXPLOSION FIRE OR EXPLOSION HAZARD • Failure to follow safety warnings exactly could • Le non-respect des avertissements de result in serious injury or property damage.
  • Page 2: Table Of Contents

    TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION ....3 Upflow Furnace Installation ........19 Bottom Panel Removal ........19 REQUIREMENTS & CODES ........3 Alternate Bottom Panel Removal ......19 Combustion Air Quality ......... 4 Inducer & Venting Options ........20 Installation in a Garage .........
  • Page 3: Important Safety Information

    IMPORTANT SAFETY INFORMATION TROUBLESHOOTING ..........35 Please read all instructions before servicing this equipment. MAINTENANCE ............35 Pay attention to all safety warnings and any other special FIGURES & TABLES ..........37 notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a Figure 41.
  • Page 4: Combustion Air Quality

    • When supply ducts carry air circulated by the furnace b.) The (CO) detector shall: • Be located in the room that houses the appliance to areas outside the space containing the furnace, the return air shall also be handled by duct(s) sealed to or equipment;...
  • Page 5: Installation In A Garage

    Installation in a Garage Heating Load This furnace should be sized to provide the design heating WARNING: load requirement. Heating load estimates can be made using approved methods available from Air Conditioning Do not place combustible material on or against Contractors of America (Manual J);...
  • Page 6: Combustion Air & Venting Requirements

    COMBUSTION AIR & VENTING REQUIREMENTS WARNING: AVERTISSEMENT: RISQUE D’EMPOISONNEMENT AU CARBON MONOXIDE POISONING HAZARD MONOXYDE DE CARBONED Failure to follow the steps outlined below for each appliance connected to the venting system Le non-respect des consignes suivantes portant sur chacun des appareils raccordés au système being placed into operation could result in carbon d’évacuation mis en service pourrait entraîner monoxide poisoning or death.
  • Page 7: Direct Vent Installation

    Important Information Manufactured Homes • This furnace must be vented in compliance with Recreational Vehicles, Park Models the current revision of the National Fuel Gas Code Manufactured Buildings (ANSI-Z223.1/NFPA54). Instructions for determining Modular Homes / Buildings the adequacy of an installation can be found in the •...
  • Page 8: Air From Inside

    Air From Inside Figure 3 Vent or If combustion air is taken from the heated space, the two Chimney openings must each have a free area of at least one square Ventilation Louvers inch per 1,000 Btuh of total input of all appliances in the (each end of attic) confined space, but not less than 100 square inches of free area.
  • Page 9: Alternate Method Of Providing Air From Outside

    Figure 5 Alternate Method of Providing Air from Outside If acceptable under local Codes, it is permitted to provide outside air using one opening (See NFGC). Vent or Chimney Generally, confined spaces must have two openings in the space for combustion air. One opening must be within Air Duct Water 12 inches of the ceiling, and the other must be within...
  • Page 10: Vent Pipe Material

    Vent Pipe Material Vent Pipe Installation Vent and combustion air pipe and fittings must be one of the following materials in the list and must conform to the CAUTION: indicated ANSI/ASTM standards. Cement must conform to ASTM Standard D2564 for PVC and Standard D2235 Combustion air must not be drawn from a for ABS.
  • Page 11: Outdoor Terminations - Horizontal Venting

    Outdoor Terminations - Horizontal Venting WARNING: Vent and combustion air intake terminations shall be installed as depicted in Figure Figure 8, and in The combustion air vent and exhaust vent must accordance with these instructions: be configured as shown in Figure 9. Improper •...
  • Page 12: Outdoor Terminations - Vertical Venting

    Vent Freezing Protection Figure 9 Vent Configuration to Provide 12" Minimum height above CAUTION: Snow Level. 12" Min. 19" Max. When the vent pipe is exposed to temperatures Support below freezing (i.e., when it passes through Outside 12" Above Wall unheated spaces, chimneys, etc.) the pipe Maximum Expected...
  • Page 13: Existing Installations

    Downflow furnaces can only use contains limestone). Proper drains and connections to the one return opening. condensate tubing are required as NORDYNE cannot be • It is recommended that the outlet duct contain a held responsible for water leakage which occurs due to removable access panel.
  • Page 14: Return Air Connections

    Use it must be designed so that the furnace will not operate NORDYNE’s certiduct program to determine proper when the damper is in the cooling position or when in duct size for A/C.
  • Page 15: Furnace Installation

    Upflow and downflow models must be installed with NOTE: The furnace may be installed on combustible the Nordyne A/C coil box which are listed according to flooring when installed on a Nordyne duct connector. See the cabinet size of the furnace: “B” cabinet - 920169, Figure 12 (page 16).
  • Page 16: Downflow Furnace Installation

    Figure 12 Table 3 REDUCER (See Notes) FLOOR OPENING “X” FLOOR CAVITY FELT-SEAL SUPPLY AIR DUCT FIBERGLASS SPACERS INSULATION DUCT CONNECTOR TABS Duct Connector If Floor Cavity Type & Part Number NOTES: (“X”) is: Finger Tab With reducer installed: Opening to duct is 10-1/4” x 13-1/4”. Screw Down With reducer removed: Opening to duct is 13-1/4”...
  • Page 17: Narrow Duct Attachment - Option 1

    4. Install the duct connector back in the floor opening with Figure 15 the bottom tabs extending into the supply air duct. 5. Install the mounting plate (Figure 14) under the back side of the duct connector. Align the screw holes in both components.
  • Page 18: Installing Screw-Down Duct Connectors

    Installing the Downflow Furnace Figure 17 Secure finger tabs to side of air duct with staples 1. Prepare the AC coil box for installation by removing 2 or sheet metal screws screws from the sides of the A/C coil box. Finger Tabbed 2.
  • Page 19: Upflow Furnace Installation

    Upflow Furnace Installation Bottom Panel Removal The steps listed below describe how to remove the bottom panel from the furnace. Figure WARNING: 1. Remove the door (1) from the blower compartment. The furnace must not be installed directly on 2. Disconnect the blower motor wiring harness (2) from carpeting,tile,or any combustible material other the control board.
  • Page 20: Inducer & Venting Options

    Figure 23 Table 4 1 Pipe Installations Vent Upflow Downflow Option 1 Option 7 Right Option 2* Option 8* Left Option 3* Option 9* 2-Pipe Installations Vent Upflow Downflow Option 4 Option 10 Right Option 5* Option 11* Figure 23. Alternate Removal Method Left Option 6* Option 12*...
  • Page 21: Alternate Pressure Switch Location

    Figure 24 Alternate Pressure Switch Location In some inducer orientations, the inducer pressure switch may interfere with gas pipe installation. Check the side of the cabinet the gas pipe will enter and determine if the inducer pressure switch needs to be moved. If the switch interferes with gas pipe installation, please follow these instructions for relocating it to the alternate location: 1.
  • Page 22: Rubber Grommets

    Rubber Grommets Figure 29 The 2 1/4” rubber grommet is used to seal the opening between the furnace cabinet and the 2” PVC vent pipe. Inducer The rubber grommet should be installed in one of the 3” holes prior to running the vent pipe out of cabinet. No sealants are required.
  • Page 23: Typical Orientation

    Figure 31 3” PVC Pipes Figure 30 (page 22). NOTE: If supplied with your furnace, the NORDYNE PVC trap (664659) may be used 3” Neoprene in place of the reducer and 1/2” X 1/2” hose barb Couplings 3” PVC Pipes The 1/2”...
  • Page 24: Condensate Drain Lines

    Condensate Drain Lines Figure 32 Furnace Filter IMPORTANT NOTE: If the furnace is installed in an area where temperatures fall below freezing, special precautions must be made Filter Retainer Brackets for insulating condensate drain lines that drain to the outdoors. If condensate freezes in the lines, this will Furnace Flanges cause improper operation or damage to the furnace.
  • Page 25: Gas Supply & Piping

    • All gas piping must be installed in compliance with GAS SUPPLY & PIPING local codes and utility regulations. In the absence of local codes the gas line installation must comply WARNING: with the latest edition of the National Fuel Gas Code (ANSI Z223.1) or (CAN/CGA B149.1 or .2) Installation FIRE OR EXPLOSION HAZARD Codes.
  • Page 26: High Altitude Application

    12% at 3,000 feet and etc. This deration is in reference to AVERTISSEMENT: the input rate and gas heating value at sea level. To derate the furnace requires knowing the heating value of RISQUE D’INDENDIE OU D’EXPLOSION the gas at the installation site. Heating values at particular Le non-respect des avertissements de sécurité...
  • Page 27 Figure 35 UPFLOW MODELS Note “A” Note “A” Note “B” Note “B” Left Side Entry Right Side Entry DOWNFLOW MODELS Note “A” Note “A” Note “B” Note “B” Left Side Entry Right Side Entry Pipe Nipple Dripleg Manifold Automatic Gas Valve Elbow Plug (w/ manual shut-off)
  • Page 28: Conversion To Lp/Propane

    Conversion to LP/Propane Removing The Burner Orifices 1. Adjust the thermostat to the OFF position, or its lowest temperature setting. WARNING: 2. Turn the main gas supply valve (on the outside of the This furnace was shipped from the factory unit) to the OFF position.
  • Page 29: Measuring The Supply Gas Pressure

    11. Disconnect the manometer or pressure gauge. Figure 37 12. Remove the NPT fitting and reinstall the inlet pressure plug. NOTE: To prevent cross threading, hand tighten the plug first, then tighten with 3/16 Allen wrench. Measuring the Manifold Pressure The manifold pressure must be measured by installing a pressure gauge (Manometer, Magnehelic Meter, etc.) to the outlet end of the gas valve.
  • Page 30: Electrical Wiring

    2. Check all gas connections for leaks with a soap and ELECTRICAL WIRING water solution. If the solution bubbles there is a gas leak which must be corrected. WARNING: 3. Turn on all electrical power to the furnace. 4. Turn the gas valve ON/OFF knob (Figure 36) to the ON ELECTRICAL SHOCK,FIRE OR EXPLOSION...
  • Page 31: Line Voltage Wiring

    may be optionally installed. Please contact your distributor Line Voltage Wiring for the proper upgrade motor kit. It is recommended that the line voltage (115 VAC) to the furnace be supplied from a dedicated branch circuit Twinning containing the correct fuse or circuit breaker for the furnace as listed in Table WARNING:...
  • Page 32 Table 5 Cabinet Nominal Maximum Minimum Maximum Maximum Furnace Furnace Model Number Width Input Electrical Operating Operating Furnace Fuse or Circuit *RC/*RL (Btuh) (in.) Supply Amperes Breaker Amps** Voltage Voltage 17 ½ 054D-24B 54,000 115-60-1 10.0 072D-35C 72,000 115-60-1 090D-35C 90,000 115-60-1 15.6...
  • Page 33: Grounding

    Verifying & Adjusting Input Rate one stage of heating and the second furnace to ignite for the second stage of heating. IMPORTANT NOTE: 3. Refer to Figure 40 (page 32) for the remaining The input rate must not exceed the rate shown on the thermostat connections.
  • Page 34: Verifying Burner Operation

    Verifying Burner Operation OPERATING SEQUENCE The operating sequences for the heating, cooling, and fan modes are described below. Refer to the field and CAUTION: furnace wiring diagrams: Figure 39 (page 32), Figure The door over the burners may only be opened 40 (page 32), &...
  • Page 35: Troubleshooting

    MAINTENANCE TROUBLESHOOTING If the furnace fails to operate check the following: WARNING: • Is the thermostat operating properly? • Are the blower compartment door(s) in place? ELECTRICAL SHOCK, FIRE OR EXPLOSION • Is the furnace disconnect closed? HAZARD • Has the circuit breaker tripped or the control board fuse burned open? Failure to follow safety warnings exactly could •...
  • Page 36 maintenance checkup be performed. At a minimum, 6. Using two wrenches, separate the ground-joint union this check should include the following items: in the gas supply piping at the furnace. 7. Remove the piping between the Gas Valve and the Air Filter(s) - An air filter is supplied with the furnace as ground-joint union.
  • Page 37: Figures & Tables

    FIGURES & TABLES Figure 41 Bottom *RC Upflow Furnace Return TOP VIEW Opening Model #’s Dim. “A” Dim. “B” Dim. “C” 054D-24B 17 1/2 15 7/8 16 1/8 FRONT BRACE 072D-35C 19 3/8 19 5/8 090D-35C FLANGES ½ 108D-45D 24 1/2 22 7/8 23 1/8 BOTTOM...
  • Page 38: Airflow Data

    Airflow Data Table 7 External Static Pressure (Inches Water Column) Heating Model Motor Input Number Speed (Btuh) CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise High* 1550 1520 1485 1450 1410 1360 1300 1255 Med-High...
  • Page 39: Electrical Information

    Electrical Information Figure 42 HIGH XFMR R C Y G W Figure 42. M4RC & M4RL Wiring Diagram...
  • Page 40: Gas Information

    Gas Information Table 8 GAS FLOW RATES GAS FLOW RATES (CUBIC FEET PER HOUR) (CUBIC FEET PER HOUR) CUBIC FEET PER CUBIC FEET PER TIME FOR TIME FOR REVOLUTION OF GAS METER REVOLUTION OF GAS METER ONE REVOLUTION ONE REVOLUTION (SECONDS) (SECONDS) 1,800...
  • Page 41: Natural Gas - High Heating Value

    Table 10 LOCAL HEATING VALUE, BTU PER CUBIC FOOT ALTITUDE ABOVE 650 700 750 800 850 900 950 1,000 1,050 SEA LEVEL 2,000 FT LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH 3,000 FT LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH 4,000 FT LOW LOW LOW LOW LOW HIGH HIGH HIGH HIGH 5,000 FT...
  • Page 42: Venting Information

    Venting Information Table 14 VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED CANADIAN INSTALLATIONS US INSTALLATIONS Direct Vent (2-pipe) & Clearance Location Conventional Vent Direct Vent Conventional Vent (1-pipe) (2-pipe) Furnaces (1-pipe) Furnaces Furnaces Clearance above grade, veranda, porch, deck, 12 inches (30cm) 12 inches (30cm) 12 inches (30cm)
  • Page 43: Horizontal Venting

    HORIZONTAL VENTING Figure 43 (2-Pipe Shown) First Support as Close Straps or Other Suitable to Furnace as Possible Supports at minimum Seal / Caulk 5 ft. Intervals 3” x 90° Elbows Around Pipes at Wall 3” x 90° Elbow Upward Pitch 1/4” Per Foot (Exhaust Vent) 3”...
  • Page 44 Figure 44 UPFLOW OPTIONS - 1 PIPE Rubber COMBUSTION COMBUSTION Grommet COMBUSTION Plug Plug NOTE 5 NOTE 5 Rubber Grommet OPTION 1 OPTION 2 OPTION 3 Rubber PVC Trap Grommet See VIEW A for drain line positions See VIEW B for drain line positions See VIEW C for drain line positions VIEW -A- VIEW -B-...
  • Page 45 DOWNFLOW OPTIONS - 1 PIPE Figure 45 COMBUSTION COMBUSTION Rubber Grommet COMBUSTION Plug Plug Option Option Option NOTE 5 NOTE 5 Rubber Grommet Trap Rubber Grommet See VIEW D for drain line positions See VIEW E for drain line positions See VIEW F for drain line positions Drain Line Attached VIEW -D-...
  • Page 46: Furnace Components

    FURNACE COMPONENTS The descriptions below are various functional components that affect the operation and shutting down of this furnace. Some of these components and their locations are shown in Figure 46. If any component of the furnace must be replaced, use only factory authorized replacement parts specified in the Replacement Parts List provided online. Blower Limit Switch - The Blower switch prevents furnace operation when blower is not operational.
  • Page 48: Installation / Performance Check List

    INSTALLATION / PERFORMANCE CHECK LIST ELECTRICAL SYSTEM ATTENTION INSTALLERS: Electrical connections tight? It is your responsibility to know this product better than your customer. This includes being able to install the product according to strict Line voltage polarity correct? safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product.

This manual is also suitable for:

M4rc072d-35cM4rc108d-45dM4rl090-35cM4rc090d-35c

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