Thermo Pride GMD2-60N Installation And Service Manual
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Thermo Pride GMD2-60N Installation And Service Manual

Gas-fired furnace downflow & direct vent (sealed combustion
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DOWNFLOW & DIRECT VENT (SEALED COMBUSTION)
INSTALLATION AND SERVICE MANUAL
For installation in:
1. Manufactured Homes
2. Modular Homes/Buildings
3. Site Constructed—Residential
(Single Story Dwellings)
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE USER
AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL.
VEUILLEZ LIRE CES INSTRUCTIONS AVANT L'INSTALLATION, LA MISE À FEU INITIALE ET AVANT TOUT
ENTRETIEN OU MAINTENANCE. CES INSTRUCTIONS DOIVENT ÊTRE LAISSÉES À L'UTILISATEUR ET
DOIVENT ÊTRE CONSERVÉES POUR RÉFÉRENCE ULTÉRIEURE PAR UN PERSONNEL DE MAINTENANCE
QUALIFIÉ.
MG-521
ECN 5625-MA 200408
GAS-FIRED FURNACE
MODELS: GMD2-60N and GMD2-80N
THERMO PRODUCTS, LLC.
POST OFFICE BOX 237
DENTON, NC 27239
PHONE: 800- 476-4328
Pour l'installation dans :
1. Maisons fabriquées
2. Maisons modulaires / Bâtiments
3. Site a construit - Résidentiel
(Habitations à étage unique)
MADE IN USA

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  • Page 1 GAS-FIRED FURNACE DOWNFLOW & DIRECT VENT (SEALED COMBUSTION) MODELS: GMD2-60N and GMD2-80N INSTALLATION AND SERVICE MANUAL For installation in: Pour l'installation dans : 1. Manufactured Homes 1. Maisons fabriquées 2. Modular Homes/Buildings 2. Maisons modulaires / Bâtiments 3. Site Constructed—Residential 3.
  • Page 3 All installations and services must be performed by qualified service personnel. c WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. c AVERTISSEMENT: Si les informations contenues dans ces instructions ne sont pas suivies à...

  • Page 4: Safety Section

    All installations and services must be performed by qualified service personnel. I. SAFETY SECTION This page and the following two pages contain various warnings and cautions found throughout this furnace Service and Installation Manual. Please read and comply with the statements on the cover and the statements below. This furnace is not to be used as a construction heater.
  • Page 5 All installations and services must be performed by qualified service personnel. All gas pipe connections must be leak tested using a strong soap and water solution (with the gas turned on). Any leaks must be repaired immediately after turning off the gas supply. A final test for gas leakage must be made after purging the gas line.
  • Page 6 All installations and services must be performed by qualified service personnel. This page and the following page contain reproductions of the various warning and instruction labels placed on the Thermo Pride Gas Furnace. Please read and comply with the contents of these labels.
  • Page 7 All installations and services must be performed by qualified service personnel.
  • Page 8 All installations and services must be performed by qualified service personnel. NAT. 60 000 14,0 POUCES D'EAU W. C. P.L. 60 000 11,0 14,0 10,0 POUCES D'EAU W. C. NAT. 80 000 2,45mm 14,0 POUCES D'EAU W. C. P.L. 80 000 11,0 14,0 10,0 POUCES D'EAU W.

  • Page 9: Table Of Contents

    All installations and services must be performed by qualified service personnel. TABLE OF CONTENTS SECTION BEGINNING PAGE SAFETY SECTION GENERAL INSTRUCTIONS AND CLEARANCES III. FURNACE SPECIFICATIONS INSTALLATION A. ROOF JACK B. STANDARD CHIMNEY C. FURNACE LOCATION D. BASE INSTALLATION 1. Combustible Floor Base Model: 70-BASE 2.

  • Page 10: General Instructions And Clearances

    All installations and services must be performed by qualified service personnel. II. GENERAL INSTRUCTIONS AND CLEARANCES NOTE: READ THIS SECTION BEFORE STARTING INSTALLATION 1. This furnace is equipped with orifices for operation with natural gas. For conversion to propane gas, see instructions in Gas Conversion Section of this manual.
  • Page 11 Also, allow ample clearances for servicing the furnace for easy access to the air filter, blower assembly, burner assembly, controls, and vent connections. MODELS GMD2-60N and GMD2-80N CLOSET ALCOVE FRONT 6”...

  • Page 12: Furnace Specifications

    All installations and services must be performed by qualified service personnel. III. FURNACE SPECIFICATIONS MODEL GMD2-60 GMD2-80 HEAT INPUT RATE (BTUH) 60,000 80,000 HEATING CAPACITY (BTUH) 49,000 65,000 BURNER ORIFICE-NAT. GAS (MM) 2.45 BURNER ORIFICE-PROP. GAS (DMS) GAS SUPPLY PRESSURE (IN.W.G.) MINIMUM REQUIRED PROPANE NATURAL...
  • Page 13 All installations and services must be performed by qualified service personnel. BLOWER DATA GMD2-60 MANUFACTURER: MORRISON PRODUCTS, INC. BLOWER MODEL: 10-7, DIRECT DRIVE NOMINAL MOTOR POWER OUTPUT (HORSEPOWER): 1/3 TYPICAL AIRFLOW @ SPECIFIED EXTERNAL STATIC PRESSURES (SCFM @. IN.W.G.): ESP (IN W.C.) LOW SPEED: MEDIUM LOW SPEED:...

  • Page 14: Installation

    All installations and services must be performed by qualified service personnel. IV. INSTALLATION A. ROOF JACK The roof jack assembly and accessories must be listed by a nationally recognized testing agency for the appropriate heating fuel. The roof jack assembly must be installed according to the vent manufacturer’s instructions prior to the furnace installation.
  • Page 15 All installations and services must be performed by qualified service personnel. Combustible Floor Base Model: 70-BASE Figure 1A Cottage Base Model: 01COT-BASE Figure 1B Coil Cabinet Model: CE111S Figure 1C CE111S...

  • Page 16: Base Installation

    All installations and services must be performed by qualified service personnel. D. BASE INSTALLATION 1. Combustible Floor Base Model: 70-BASE Use the base bottom panel as a template to mark floor opening locations (see Figure 2). Cut a square opening in the floor for the supply air connector duct. Cut the opening 1-inch larger than the square template opening.

  • Page 17: Cottage Base Model: 01Cot-Base

    All installations and services must be performed by qualified service personnel. If the combustion air passageway cannot terminate outside of the skirting or enclosure, a permanent opening with a minimum of 50 square inches of unobstructed infiltration (free area) for ventilation air must be provided for adequate combustion.

  • Page 18: Alcove Installation

    All installations and services must be performed by qualified service personnel. c CAUTION: A permanent opening with a minimum of 50 square inches of unobstructed infiltration (free area) for ventilation and combustion air must be provided to the interior of the structure. Additional make-up air may need to be supplied to the interior of the structure to compensate for exhaust fans, appliances, or vents, which consume air from the interior of the structure.

  • Page 19: Closet Installation

    All installations and services must be performed by qualified service personnel. F. CLOSET INSTALLATION WARNING: HAZARD OF ASPHYXIATION: A suction effect will occur when the furnace is operating inside the closet with the closet door closed. For proper operation, the furnace blower shall create no more than a 0.05-inch water column pressure differential between the closet and the...

  • Page 20: Combustion Air

    All installations and services must be performed by qualified service personnel. 4. The total free area of openings in the floor or ceiling registers serving the return air system must be at least 350 square inches. At least one register must be located where it is not likely to be covered by carpeting, boxes, furniture, or any other objects.
  • Page 21 All installations and services must be performed by qualified service personnel. flanges, duct, and adapter are completely sealed to the burner enclosure base with high temperature silicone caulk. A 3-inch round to 7-inch x 2-1/4 inch rectangular adapter plate is supplied with the furnace for adapting the 3-inch round flex combustion air duct to the 2-inch x 7-inch combustion air duct.

  • Page 22: Gas Piping

    All installations and services must be performed by qualified service personnel. H. GAS PIPING Because of the potential of the odorant to fade, a gas leak may not be detected by smell. If this furnace is installed below grade, contact your gas supplier for a gas detector.

  • Page 23: Electrical Wiring

    All installations and services must be performed by qualified service personnel. design-certified to be resistant to the action of the LP gases should be used on all threaded joints. The burner is setup to be piped to the gas supply through the left-hand side of the furnace.
  • Page 24 All installations and services must be performed by qualified service personnel. d. Connect the “neutral” wire to the white wire. e. Connect the “ground” wire to the green wire. f. Reinstall and secure the junction box cover with the original mounting screws. 3.
  • Page 25 All installations and services must be performed by qualified service personnel. If the heat anticipator is set too high, the furnace may delay activation of a heating cycle for too long. If the heat anticipator is set too low, the furnace may cycle too frequently.

  • Page 26: Initial Start Up

    All installations and services must be performed by qualified service personnel. J. INITIAL START UP: This furnace does not have a pilot. It is equipped with a hot surface igniter, which automatically lights the burner. Do not attempt to light the burner by hand. Check the following items before the initial start-up.
  • Page 27 All installations and services must be performed by qualified service personnel. must be reduced 20.0%. Example: a furnace rated at 80,000 BTU at sea level must be reduced to a firing rate of 64,000 (80,000 x .80 = 64,000) at an elevation of 5,000 feet.

  • Page 28: Burner Adjustment

    All installations and services must be performed by qualified service personnel. TABLE 2 This gas furnace is equipped with a fixed orifice sized for the manifold pressure shown on the rating label. The input can only be increased, or decreased, by adjusting the manifold pressure.

  • Page 29: Setting Temperature Rise

    After 10 to 15 minutes of continuous operation, the temperature rise through the GMD2-60N furnace must fall within a range of 45F to 75F or 55F to 85F for the GMD2-80N. If the outlet or supply duct temperature is too high, check to make sure the return air filter is clean, the return air registers are free from obstruction, the outlet registers are properly adjusted and clear, and the supply and return air ducts are open.

  • Page 30: Furnace Checkout Procedure

    All installations and services must be performed by qualified service personnel. N. FURNACE CHECKOUT PROCEDURE Before any system of gas piping is finally put into service, it shall be carefully tested to assure that it is gas tight as indicated in section IV. H. Gas Piping of this manual. NOTICE: All controls on the unit should be checked for proper functioning prior to the qualified service personnel leaving the job site.

  • Page 31: Installer's Instructions To User

    All installations and services must be performed by qualified service personnel. V. INSTALLER'S INSTRUCTIONS TO USER: After completing the installation, the installer shall inform and/or demonstrate to the homeowner: The location of all the instructions in the furnace must be kept along with instructions for any accessories in the plastic pouch near the furnace.

  • Page 32: Starting The Unit

    All installations and services must be performed by qualified service personnel. VI. STARTING THE UNIT VI. STARTING THE UNIT A. SEQUENCE OF OPERATIONS CONTINUOUS SAFE OPERATION CHECK IF FLAME AT ANY TIME THE SIMULATION CONDITION PRESENT OR ROLL-OUT GAS VALVE IS SWITCH OPENS, SYSTEM ENERGIZES INDUCER NOT ENERGIZED FAN FOR 15 SECONDS AND CIRCULATOR BLOWER...
  • Page 33 All installations and services must be performed by qualified service personnel. AFTER DELAY-TO-FAN--ON THE RETRY SEQUENCE PERIOD ENDS, CIRCULATING PROVIDES A 60 SECOND MAIN AIR FAN IS ENERGIZED AT WAIT BEFORE IGNITION BURNER HEATING SPEED. THE RETRY. RETRY IS OPERATION (OPTIONAL) ELECTRONIC ATTEMPTED WITH AN AIR CLEANER AND...

  • Page 34: Troubleshooting

    All installations and services must be performed by qualified service personnel. VII. TROUBLESHOOTING THIS SECTION IS ONLY TO BE PERFORMED BY TRAINED, QUALIFIED SERVICE PERSONNEL, AND NOT BY THE FURNACE OWNER. NOTICE: BEFORE TROUBLESHOOTING, FAMILIARIZE YOURSELF WITH THE START UP AND CHECKOUT PROCEDURE. ALL INSTALLATION AND SERVICES MUST BE PERFORMED BY QUALIFIED HEATING CONTRACTORS When testing electrical equipment, always follow standard electrical procedures and precautions.
  • Page 35 All installations and services must be performed by qualified service personnel. DIAGNOSTIC FEATURES The integrated control continuously monitors its own operation and the operation of the system. If a failure occurs, the LED will indicate a failure code as shown below.
  • Page 36 All installations and services must be performed by qualified service personnel. TROUBLESHOOTING GUIDE THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO CALL FOR HEAT. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL OPERATION. TO USE THIS DIAGRAM, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES.
  • Page 37 All installations and services must be performed by qualified service personnel. IS THERE LINE VOLTAGE CHECK THE INTEGRATED ACROSS INDUCER POWER CONTROL DIAGNOSTIC LED TERMINALS "IND" & "IND N" LAMP. RESET BY INTERRUPTING AT THE INTEGRATED CONTROL? POWER TO CONTROL FOR MORE THAN ONE SECOND.
  • Page 38 All installations and services must be performed by qualified service personnel. AFTER GAS VALVE CHECK FOR PROPER ADJUST TO 3.5" FOR NATURAL GAS OPENS, DO THE MANIFOLD PRESSURE. OR 10.0" WC FOR LP GAS BURNERS IGNITE? IS IGNITOR REPOSITION TO POSITIONED CORRECTLY? CORRECT LOCATION.
  • Page 39 All installations and services must be performed by qualified service personnel. DOES SYSTEM RUN UNTIL IS LED LIGHT CHECK ALL THERMOSTAT IS SATISFIED? ON INTEGRATED WIRING FOR CONTROL FLASHING? LOOSE CONNECTIONS. DOES BURNER SHUT OFF CHECK FOR SHORT IN WIRE TO WHEN THERMOSTAT IS THERMOSTAT AND CORRECT SATISFIED?

  • Page 40: Dealer Maintenance

    All installations and services must be performed by qualified service personnel. VIII. DEALER MAINTENANCE A qualified heating contractor should perform the following maintenance procedures at the beginning of each heating season. Correct any deficiencies at once. c WARNING: Personal injury or property damage could result from repair or service of this furnace by anyone other than a qualified heating contractor.

  • Page 41: Inducer Blower Assembly

    All installations and services must be performed by qualified service personnel. Figure 9 C. INDUCER BLOWER ASSEMBLY Inspect the pressure switch and tubing connections and inspect the blower/assembly for warpage, deterioration and carbon or other build-up. If necessary, clean the accessible portions of the housing and blower with a damp cloth.

  • Page 42: Gaskets/Sealing Materials

    All installations and services must be performed by qualified service personnel. combustion products. If a restriction is found, the flue vent must be cleaned or replaced to ensure proper venting. Vent pipes should also be inspected for any signs of corrosion, deterioration, or leakage that may cause combustion by-products to infiltrate the home or indoor environment.

  • Page 43: Users Information Section

    All installations and services must be performed by qualified service personnel. 3. Open all shutoff valves in the gas supply line. 4. Turn “on” the main power at the disconnecting switch and at the furnace power switch to start the inducer. 5.

  • Page 44: Component Locations

    All installations and services must be performed by qualified service personnel. B. COMPONENT LOCATIONS The following diagram shows a typical furnace installation and typical position of the components referenced in these instructions. Figure 10 C. INSPECTION AREAS IMPORTANT: For safe operation it is the responsibility of the owner and/or user that the burner, chimney/vent pipe, heat exchanger and controls should be inspected every year by a qualified heating contractor.

  • Page 45: Filter Location And Cleaning

    All installations and services must be performed by qualified service personnel. 1. VESTIBULE: The furnace vestibule areas or burner compartment should be inspected by removing front door of the furnace and looking for signs of excessive heat such as discoloration of components, materials damaged from rust or corrosion, soot or carbon build-up.

  • Page 46: Appendix A - Replacement Parts

    All installations and services must be performed by qualified service personnel. APPENDIX A – REPLACEMENT PARTS...
  • Page 47 All installations and services must be performed by qualified service personnel.

  • Page 48: Appendix B - Wiring Diagram

    All installations and services must be performed by qualified service personnel. APPENDIX B – WIRING DIAGRAM...

This manual is also suitable for:

Gmd2-80n

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