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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.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any
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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. : When testing electrical equipment, always follow standard electrical procedures and precautions. :
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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. Dry moisture from all leads and terminals if wetting occurs. Wait at least 24 hours for the circuit to fully dry before energizing the system. : The furnace
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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. WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot. It is eq
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All installations and services must be performed by qualified service personnel. 4
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All installations and services must be performed by qualified service personnel. TABLE OF CONTENTS SECTION BEGINNING PAGE I. SAFETY SECTION 1 II. GENERAL INSTRUCTIONS AND CLEARANCES 6 III. FURNACE SPECIFICATIONS 8 IV. INSTALLATION 10 A. ROOF JACK 10 B. STANDARD CHIMNEY 10 C. FURNACE LOCATION 10 D. BASE INSTALLATION 12 1. Combustible Floor Base Model: 70-BASE 12 2. Cottage Base Model: 01COT-BASE 13 E. ALCOVE
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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. 2. Any reference to L.P. or Propane gas in this manual, any other labels, or markings on this furnace is to be construed to be propane HD-5. A c
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All installations and services must be performed by qualified service personnel. : The area around the furnace must be kept free and clear of combustible materials, especially papers and rags. : This furnace is not to be used as a construction heater. 6. Definitions of "combustible" and "non-combustible" materials as presented in the 1999 version of the National Fuel Gas Code, ANSI Z223.1-1999/NFPA 70-1999, are as follows: a. Combustible material: “...materials made of or
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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) #38 2.45 BURNER ORIFICE-PROP. GAS (DMS) #52 #53 GAS SUPPLY PRESSURE (IN.W.G.) MINIMUM REQUIRED PROPANE
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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.) 0.2 0.5 LOW SPEED: 759 694 MEDIUM LOW 907 809 SPEED: MEDIUM HIGH 1096 934 SPEED: HIGH SPEED: 1207 1029
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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. (Refer to Figure 2 for flue location on furnace.) Adapters for pitched roofs as well as extended barrel length roo
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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 11
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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. (duct requires 1-inch clearance to combustible floor). Cut a combustion air duct opening in the floor 1/8- inch larger than
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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. This permanent opening must be located no less than 12 inches from the bottom of the enclosure or skirting. Figure 3 Slit the corners of connector duct down t
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All installations and services must be performed by qualified service personnel. 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. Refer to the assembly in
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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 adjoining space.
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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. 5. Materials located in the return air system must have a flame spread classification of 200 or less. 6. Wiring materials located in the
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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. The maximum intake duct length allowed is equivalent to 40-feet of straight duct. Reduce this length by 6-feet for the intake hood and each 90-degree elbow u
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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. : With the gas piping pressurized, all gas piping connections must be leak tested using a strong soap and water solution. Any leaks must be repaired immediately after turning off the gas supply. A final test
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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. For service purposes, it is recommended the gas union be located inside the furnace. A drip leg must be used on both propane and natural gas installations immediately upstream of the furnace in order to trap oi
