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INSTALLATION & OPERATING
(CATEGORY IV)
IF THIS FURNACE IS INSTALLED IN AN ENCLOSED AREA, SUCH AS A GARAGE OR UTILITY
ROOM, WITH ANY OTHER CARBON MONOXIDE PRODUCING DEVICE (i.e. AUTOMOBILE,
SPACE HEATER ETC.) INSURE THAT THE ENCLOSED AREA IS PROPERLY VENTILATED.
CARBON MONOXIDE (REFERRED TO AS CO) CAN CAUSE SERIOUS PERSONAL INJURY OR
DEATH
THIS FURNACE IS DESIGN CERTIFIED FOR INSTALLATION IN BUILDINGS
CONSTRUCTED ON SITE ONLY.
IO-176A
INSTRUCTIONS
for GSM & GSMS
SEALED COMBUSTION
CONDENSING FURNACES
Goodman Manufacturing Company,L.P.
2550 North Loop West, Suite 400, Houston, TX 77092
www.goodmanmfg.com
WARNING
WARNING
WARNING
12/01
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Summary of Contents for Goodman GSM
- Page 1 INSTALLATION & OPERATING INSTRUCTIONS for GSM & GSMS SEALED COMBUSTION CONDENSING FURNACES (CATEGORY IV) WARNING IF THIS FURNACE IS INSTALLED IN AN ENCLOSED AREA, SUCH AS A GARAGE OR UTILITY ROOM, WITH ANY OTHER CARBON MONOXIDE PRODUCING DEVICE (i.e. AUTOMOBILE, SPACE HEATER ETC.) INSURE THAT THE ENCLOSED AREA IS PROPERLY VENTILATED.
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Page 2: Location 6
SERVICE PARTS DEPARTMENT GOODMAN MANUFACTURING CO., LP 2550 NORTH LOOP WEST, SUITE 400 HOUSTON, TEXAS 77092 (713) 861 - 2500 The major parts groups are as follows;... -
Page 3: Table Of Contents
INDEX WARNINGS & GENERAL INFORMATION INSTALLATION LOCATION 6, 7 COMBUSTION AIR 7 - 9 VENTING 9,10 HORIZONTAL THROUGH THE WALL VENTING 11, 12 JOINING PIPE, DRAIN CONNECTIONS 12, 13 GAS PIPING AND GAS PIPE CAPACITY TABLE 13, 14 CIRCULATING AIR SUPPLY, RETURN AIR ELECTRICAL SUPPLY AND CONTROL VOLTAGE CONNECTIONS 16, 17 RATING THE FURNACE... - Page 4 Some localities require the installer/servicer to be licensed. If in doubt, check with local authorities. The GSM furnace is a two stage heating appliance. For optimum use, the GSM furnace should use a two stage room thermostat. The GSMS furnace is a single stage furnace and uses a single stage room thermostat.
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Page 5: Installation
These furnaces meet the California NOX emission standards and the California efficiency standards. The GSM & GSMS furnace may be installed as either a Direct Vent or Non-Direct Vent Furnace. These furnaces are designed to be an UPFLOW or HORIZONTAL furnace. The following sketch... -
Page 6: Location
LOCATION DO NOT install this furnace in a mobile home. This furnace is designed only for installation in buildings constructed on site and connected to ductwork. When installed in a utility room or closet, the door should be wide enough to allow the largest part of the furnace to enter, or to permit the replacement of another appliance, such as a water heater. -
Page 7: Combustion Air
COMBUSTION AIR The GSM & GSMS furnaces can be installed either as a Direct Vent or a Non-Direct Vent appliance. If installed as direct vent appliance the combustion air is to be taken from the outdoors via a 2” or 3”... - Page 8 Debris Screen PVC fitting Burner Box As a non-direct vent furnace, this must be installed in accordance with the combustion and ventilation air requirements found in ANSI Z221.3, section 5.3. When installed as a non-direct vent furnace in an area which is deemed as a confined area, see (ANSI Z223.1, section 1.7, “Space, Confined”) the requirements are as follows: All Combustion Air Taken From The Inside Of The Building.
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Page 9: Venting
COMBUSTION AIR / VENT PIPE SIZE The vent / combustion air pipe system should be of the following sizes. MODEL # VENT. COMB. O ELL 1 ELL 2 ELL 3 ELL 4 ELL GSM(S) DIA. 060-3 3” 2” 100’ 100’ 100’ 100’ 100’... - Page 10 DO NOT install the vent pipe in the same chase with the vent from another fuel burning appliance, except with a GMN, GMPN, GSM, or GSMS. DO NOT install the combustion air supply pipe and / or vent pipe under a deck or overhang where recirculation of combustion products can occur or a positive pressure may exist.
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Page 11: Horizontal Through The Wall Venting
HORIZONTAL THROUGH THE WALL VENTING This appliance may be horizontally vented through an exterior wall following the applicable instructions in the “VENTING” section in conjunction with these additional requirements. ALL HORIZONTAL VENT INSTALLATIONS MUST BE MADE IN ACCORDANCE WITH THESE INSTRUCTIONS. - Page 12 SUPPORTING AND PITCHING THE VENT AND COMBUSTION AIR SUPPLY PIPE All horizontal runs must be supported at least every five (5) feet and at joints with straps or hangers. No sags or dips are permitted. The pipes must be saddle supported only. Do not secure the hangers or straps tightly to the pipes to allow for expansion and contraction of the vent pipe.
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Page 13: Gas Piping And Gas Pipe Capacity Table
Note: Some local codes require this condensate to be neutralized prior to disposal. See illustrations below for proper drain connections. LEFT DRAIN & VENT RIGHT DRAIN & VENT HORIZONTAL LEFT HORIZONTAL RIGHT GAS PIPING & GAS PIPE CAPACITY TABLE Check the rating plate to make certain that the unit is equipped to burn the type of gas supplied. Care should be taken after the installation of this appliance that the gas control valve is not subjected to high gas supply line pressure. - Page 14 The gas input of the appliance is marked on the specification plate. The heating value of the gas may be determined by contacting the gas utility or gas supplier. The GSM furnace is a two stage furnace with the first stage delivering approximately 60% of the total furnace input.
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Page 15: Circulating Air Supply, Return Air
CAUTION If the local utility permits the use of a flexible gas connector ALWAYS USE A NEW FLEXIBLE CONNECTOR. DO NOT USE FLEXIBLE GAS LINES WHICH HAVE SERVICED ANOTHER APPLIANCE. AFTER A PERIOD OF TIME THESE LINES MAY BECOME BRITTLE AND WITH THE DISCONNECTION AND RECONNECTION CAN DEVELOP LEAKS. - Page 16 WARNING NEVER ALLOW THE PRODUCTS OF COMBUSTION TO ENTER THE RETURN DUCTWORK OR CIRCULATING AIR SUPPLY. ALL RETURN DUCTS MUST BE ADEQUATELY SECURED TO THE FURNACE AND COMPLETELY SEALED. ALL OTHER DUCTWORK MUST BE SECURED WITH APPROVED CONNECTIONS AND SEALED AIRTIGHT. THE VENT AND COMBUSTION AIR SUPPLY PIPES MUST BE PROPERLY INSTALLED AND SUPPORTED TO PREVENT LEAKAGE AS NOTED ELSEWHERE IN THESE INSTRUCTIONS.
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Page 17: Rating The Furnace
2,000 feet. Should this appliance be converted to L.P., refer to the instructions included in the factory authorized L.P. conversion kit LPM-03 (GSM) or LPM- 04 (GSMS). If for use at altitudes in excess of 2,000 feet refer to the instructions included in the factory authorized high altitude kit (HA-02). - Page 18 The supply pressure must be measured with this furnace and all other gas burning appliances in operation. The supply pressure must be adjusted to the pressure range stated on the series and rating plate. Applications for altitudes in excess of 2,000 feet require an orifice change. The orifices must be selected using the table below.
- Page 19 • Shut off all other gas fired appliances with the exception of the pilots. • Adjust the room thermostat. • Place furnace in operation. The GSM is a two-stage furnace; therefore, both stages are to be engaged when timing the gas meter.
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Page 20: Safety Controls
This furnace utilizes a vent pressure switch(s) which prevents the furnace from operating should any portion of the vent system become restricted or a venter failure occur. The GSM uses (2) two individual vent pressure switches. One switch is to control the first stage operation and another for the second stage operation. -
Page 21: Circulating Air Filters
BLOWER DOOR INTERLOCK SWITCH The purpose of the switch is to disconnect electrical power to the furnace should the blower door become dislodged, removed, or not properly reinstalled such as when performing a filter change. ALLOWING THE FURNACE TO OPERATE WITHOUT THE BLOWER DOOR BEING SECURELY IN PLACE CAN CAUSE COMBUSTION PRODUCTS TO BECOME CIRCULATED THROUGHOUT THE LIVING AREA WHICH CAN CAUSE SERIOUS ILLNESS OR CARBON MONOXIDE POISONING. - Page 22 MINIMUM FILTER SIZES INPUT BTU/H FILTER SIZE TYPE 60,000 240 IN / 480 PERM. / DISPOSABLE 80,000 320 IN / 640 PERM. / DISPOSABLE 100,000 363 IN / 727 PERM. / DISPOSABLE TEMPERATURE RISE The temperature difference between the outlet air and the inlet air of the furnace is known as the temperature rise.
- Page 23 It is also important that any repair or service be performed by a QUALIFIED service person, not by the user. HEATING MODE (W1 GSM ONLY) HEATING MODE W2 (GSM ONLY) • Main limit switch closed Same operation as W1 until “blower starts”...
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Page 24: Lighting Instructions
REMOVING AN EXISTING APPLIANCE When replacing an existing appliance, the resulting installation must comply with all local codes, or in the abscence of local codes, to the National Fuel Gas Code ANSI Z223.1 and/or CAN/CGA B149 installation codes and these installation instructions. If the installation of this furnace requires that an existing appliance be removed from a venting system which still serves another gas fired appliance, this may require that the existing vent be re-sized. -
Page 25: Inspecting And Cleaning The Heat Exchanger
INSPECTING & CLEANING THE HEAT EXCHANGER CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause dangerous and improper operation. Verify proper operation after servicing. It is the obligation of the installer to advise the user to have the furnace inspected and cleaned annually. - Page 26 BLOWER OFF DELAY (GSMS ONLY) In the heating mode, the time period between the extinguishing of the burners and the circulating blower turning off, is known as the “Blower Off Delay.” This time is factory preset at 150 seconds. The 150 second delay can be changed to 120 or 90 seconds by changing the position of a jumper on the Ignition Control.
- Page 27 GSMS ONLY IO-176...
- Page 28 GSM ONLY IO-176...
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Page 29: Lighting Instructions
LIGHTING INSTRUCTIONS These instructions are also on the furnace FOR YOUR SAFETY READ BEFORE OPERATING WARNING: Improper installation, adjustm- If you do not follow these instructions exactly, ent, alteration, service a fire or explosion may result causing property or maintenance can damage, personal injury or loss of life.