Thermo Pride GMD1-60N Installation And Service Manual
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Thermo Pride GMD1-60N Installation And Service Manual

Gas-fired furnace down flow & direct vent (sealed combustion)
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DOWN FLOW & DIRECT VENT (SEALED COMBUSTION)
MODELS: GMD1-60N and GMD1-80N
INSTALLATION AND SERVICE MANUAL
For installation in:
1. Manufactured Homes
2. Modular Homes/Buildings
3. Site Constructed—Residential (Single Story Dwellings)
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this
or any other appliance.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• 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.
:
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.
: Improper installation, adjustment, alteration, service, or maintenance can cause
injury or property damage. Refer to this manual. For assistance or additional information, consult
a qualified installer, service agency, or fuel supplier.
: Do not use this appliance if any part has been underwater. Immediately call a
qualified service technician to inspect the appliance and to replace any part of the electrical or
control system that has been underwater.
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.
MG-505
ECN 5396-MA 141211
GAS-FIRED FURNACE

FOR YOUR SAFETY

WHAT TO DO IF YOU SMELL GAS
THERMO PRODUCTS, LLC.
POST OFFICE BOX 217
NORTH JUDSON, IN 46366
PHONE: (574) 896-2133
:
MADE IN USA

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  • Page 1: For Your Safety

    GAS-FIRED FURNACE DOWN FLOW & DIRECT VENT (SEALED COMBUSTION) MODELS: GMD1-60N and GMD1-80N INSTALLATION AND SERVICE MANUAL For installation in: 1. Manufactured Homes 2. Modular Homes/Buildings 3. Site Constructed—Residential (Single Story Dwellings) FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

  • Page 2: 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 3 All installations and services must be performed by qualified service personnel. after turning off the gas supply. A final test for gas leakage must be made after purging the gas line. DO NOT wet electronic components during the leak test. Wetting electronic components may damage circuitry and cause a hazardous situation.
  • Page 4 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 5 All installations and services must be performed by qualified service personnel.

  • Page 6: 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 7: 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 8 Also, allow ample clearances for servicing the furnace for easy access to the air filter, blower assembly, burner assembly, controls, and vent connections. MODELS GMD1-60N and GMD1-80N CLOSET ALCOVE FRONT 6”...

  • Page 9: Furnace Specifications

    All installations and services must be performed by qualified service personnel. III. FURNACE SPECIFICATIONS MODEL GMD1-60 GMD1-80 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 10 All installations and services must be performed by qualified service personnel. BLOWER DATA GMD1-60 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 11: 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 12 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 / CE211T Figure 1C CE111S CE211T...

  • Page 13: 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 14: 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 15: 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 16: 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 17: 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 18 All installations and services must be performed by qualified service personnel. 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. Recommended materials for the combustion air duct are smooth, round, galvanized steel duct or schedule 20 PVC pipe.

  • Page 19: 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 20: 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 21 All installations and services must be performed by qualified service personnel. f. Reinstall and secure the junction box cover with the original mounting screws. 3. Connection Of Room Thermostat Wires NOTE: Class 1 thermostat wire must be used inside the furnace burner compartment.

  • Page 22: 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 23 All installations and services must be performed by qualified service personnel. 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. If the furnace is installed at an elevation of 2,000 feet or less, no reduction in input is required.

  • Page 24: Burner Adjustment

    All installations and services must be performed by qualified service personnel. 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 25: Setting Temperature Rise

    Figure 8 M. SETTING TEMPERATURE RISE The GMD1-60N and GMD1-80N is designed and wired at the factory for a heating blower speed that should result in an approximate temperature rise of 70°F. The blower motor is wired on low speed for heating mode of the GMD1-60N.

  • Page 26: 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 27: 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 28: Starting The Unit

    All installations and services must be performed by qualified service personnel. 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 AT HEATING SPEED UNTIL SITUATION CORRECTION...
  • Page 29 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 30: 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 31 All installations and services must be performed by qualified service personnel. DIAGNOSTIC FEATURES : Power must be disconnected before servicing. The 50A65-143 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. If the failure is internal to the control, the light will stay on continuously.
  • Page 32 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, FOLLOW THE INSTRUCTIONS IN THE BOXES.
  • Page 33 All installations and services must be performed by qualified service personnel. CHECK THE INTEGRATED CONTROL DIAGNOSTIC LED IS THERE LINE VOLTAGE LAMP. RESET BY INTERRUPTING ACROSS INDUCER POWER POWER TO CONTROL FOR MORE TERMINALS "IND" & "IND N" THAN ONE SECOND. IF LED STAYS AT THE INTEGRATED CONTROL? ON CONTINUOUSLY, REPLACE INTEGRATED CONTROL.
  • Page 34 All installations and services must be performed by qualified service personnel. AFTER GAS VALVE MEASURE MANIFOLD ADJUST TO 3.5" WC FOR OPENS, DO THE PRESSURE. IS NATURAL GAS OR 10.0" WC BURNERS IGNITE? PRESSURE ADEQUATE? FOR PROPANE GAS CHECK IGNITOR VOLTAGE DURING CORRECT LINE 20 SECOND WARM-UP,...
  • Page 35 All installations and services must be performed by qualified service personnel. CHECK ALL IS LED LIGHT DOES SYSTEM RUN UNTIL WIRING FOR ON INTEGRATED THERMOSTAT IS SATISFIED? LOOSE CONTROL FLASHING? CONNECTIONS CHECK FOR SHORT IN DOES BURNER SHUT OFF WIRE TO THERMOSTAT WHEN THERMOSTAT IS AND CORRECT IF SATISFIED?

  • Page 36: 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 37: 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 38: Gaskets/Sealing Materials

    All installations and services must be performed by qualified service personnel. 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. If signs of corrosion, deterioration, or leakage are evident, the vent pipe must be replaced with a properly sized, agency-approved, vent pipe.

  • Page 39: Users Information Section

    All installations and services must be performed by qualified service personnel. IX. USER INFORMATION SECTION A. WARNINGS AND CAUTIONS: If you suspect there is a problem with the furnace, pertaining to the venting system or any other related problem, immediately contact a qualified service agency.

  • Page 40: 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 41: 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 42: Appendix A - Replacement Parts

    All installations and services must be performed by qualified service personnel. APPENDIX A – REPLACEMENT PARTS...
  • Page 43 All installations and services must be performed by qualified service personnel.

  • Page 44: 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:

Gmd1-80n

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