Goodman Mfg GDS8, GHS8, GMS8 IV. Location Requirements and Considerations, General

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A copy of the CAN/CSA B149 Installation Codes can also be obtained from:

CSA International

178 Rexdale Boulevard

Etobicoke, Ontario, Canada M9W 1R3

The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated. The total heat loss should be calculated by an approved method or in accordance with “ASHRAE Guide” or “Manual J-Load Calculations” published by the Air Conditioning Contractors of America.

In the USA, this furnace MUST be installed in accordance with the latest edition of the ANSI Z223.1 booklet entitled “National Fuel Gas Code” (NFPA 54), and the requirements or codes of the local utility or other authority having jurisdiction. In Canada, this furnace must be installed in accordance with the current CAN/CGA-B149.1

&2 Gas Installation Codes, local plumbing or waste water codes and other applicable codes. Additional helpful publications available from the NFPA are, NFPA 90A - Installation of Air Conditioning and Ventilating System and NFPA 90B - Warm Air Heating and Air Conditioning System.

All venting shall be in accordance with PART 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1, or applicable local building and/or air conditioning codes. These publications are available from:

National Fire Protection Association, Inc.

Batterymarch Park, Quincy, MA 02269

The G**S8X of furnaces meet the California NOx emission standards and California seasonal efficiency standards. ANNUAL inspections of the furnace and its vent system is strongly recommended.

IV. LOCATION REQUIREMENTS AND CONSIDERATIONS

GENERAL

Model type determines which installation procedures must be used. For GMS and GHS models, you must follow instructions for Horizontal Left, Horizontal Right or Upflow installations only. GMS and GHS models are not approved for Downflow installations. For GDS models, you must follow instructions for Downflow installation only. GDS models are not approved for Horizontal or Upflow installations.

WARNING

POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE, EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION, OR MAINTENANCE OF THIS PRODUCT.

WARNING

TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT.

Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in Section V, Combustion and Ventilation Air Requirements.

•Centrally locate the furnace with respect to the proposed or existing air distribution system.

•Ensure the temperature of the return air entering the furnace is between 55°F and 100°F when the furnace is heating.

•Provisions must be made for venting combustion products outdoors through a proper venting system. The length of flue pipe could be a limiting factor in locating the furnace.

•Ensure adequate combustion air is available for the furnace. Improper or insufficient combustion air can expose building occupants to gas combustion products that could include carbon monoxide. Refer to Section V, Combustion and Ventilation Air Requirements.

•The furnace must be level. If the furnace is to be set on a floor that may become wet or damp at times, the furnace should be supported above the floor on a concrete base sized approximately 1-1/2" larger than the base of the furnace.

•Ensure upflow or horizontal furnaces are not installed directly on carpeting, or any other combustible material. The only combustible material allowed is wood.

•Exposure to contaminated combustion air will result in safety and performance-related problems. Do not install the furnace where the combustion air is exposed to the following substances:

chlorinated waxes or cleaners

chlorine-based swimming pool chemicals

water softening chemicals deicing salts or chemicals

carbon tetrachloride

halogen type refrigerants

cleaning solutions (such as perchloroethylene)

printing inks

paint removers

varnishes

hydrochloric acid

cements and glues

antistatic fabric softeners for clothes dryers

and masonry acid washing materials

•If the furnace is used in connection with a cooling unit, install the furnace upstream or in parallel with the cooling unit coil. Premature heat exchanger failure will result if the cooling unit coil is placed ahead of the furnace.

•If the furnace is installed in a residential garage, position the furnace so that the burners and ignition source are located not less than 18 inches (457 mm) above the floor. Protect the furnace from physical damage by vehicles.

•If the furnace is installed horizontally, the furnace access doors must be vertical so that the burners fire horizontally into the heat exchanger. Do not install the unit with the access doors on the “up/top” or “down/bottom” side of the furnace.

•Do not connect this furnace to a chimney flue that serves a separate appliance designed to burn solid fuel.

•On Counterflow Installations, the air conditioning coil must be downstream from the heat exchanger of the furnace.

•Counterflow Installation over a noncombustible floor. Before setting the furnace over the plenum opening, ensure the surface around the opening is smooth and level. A tight seal should be made between the furnace base and floor by using a silicone rubber caulking compound or cement grout.

•Counterflow Installation over a combustible floor. If installation over a combustible floor becomes necessary, use an accessory subbase (see Product Data Book applicable to your model* for details). A special accessory subbase must be used for upright counterflow unit installations over any combustible material including wood.

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Contents Installation & Operating Table of Contents XV. Troubleshooting XII. Start-up Procedure and AdjustmentXIV. Safety Circuit Description XVI. MaintenanceHomeowner Notice II. SafetyTo the Installer To the OwnerNational Fire Protection Association III. Product ApplicationAmerican National Standards Institute CSA InternationalIV. Location Requirements and Considerations National Fire Protection Association, IncGeneral Suspended Furnace Clearances and AccessibilityHorizontal Installation Existing Furnace RemovalZ223.1 Section General Thermostat InfluencesEquipment Located in Unconfined Spaces Space, Unconfined Equipment Located in Confined SpacesLouvers and Grilles Specially Engineered InstallationsVI. Category I Venting Vertical Venting Model Minimum VentUpflow Rotated Induced Draft Blower Checklist SummaryVII. Exterior Masonry Chimneys Category I Furnaces only Typical Multiple Flue Clay Tile ChimneyTermination 10 Feet Or Less From Ridge, Wall or Parapet Termination More Than 10 Feet From Ridge, Wall or ParapetCheck 1 Proper Chimney Termination Check 3 Chimney Crown Condition Check 4 Debris in CleanoutCheck 7 Complete the Installation Check 5 Liner ConditionFIX 3 Rebuild the Crown VIII. Electrical ConnectionsFIX 2 -CHANGE Venting Arrangements FIX 4 ReliningVolt Line Connections Wiring HarnessIntegrated Ignition Control Fossil Fuiel ApplicationsSetting the Heat Anticipator Typical Field Wiring 24 VAC Control CircuitVolt Thermostat Wiring Heating Heating/Cooling Room ThermostatIX. GAS Supply and Piping TwinningHigh Altitude Derate Firing Rate Pressure Switch Changes Furnace input Kbtu/hr904BNA does not require a switch change Propane GAS ConversionUpflow Installations General Furnace LayoutGAS Piping Connections General Propane GAS Piping Charts Propane Gas Installation TypCounterflow Installations GAS Piping ChecksCirculating AIR and Filters XI. Sequence of Operation Integrated Ignition ControlDuctwork Air XII. START-UP Procedure and Adjustment White-Rodgers Model 36F22White-Rodgers Model 36G22 GAS Supply Pressure Measurement White-Rodgers Model 36G22Measuring Inlet Gas Pressure Alternate Method WHITE-RODGERS 36F22 GAS ValveGAS Manifold Pressure Measurement and Adjustment GAS Input Rate Measurement Natural GAS onlyTemperature Rise Measurement Adjustment SwitchesXIII. Operational Checks XIV. Safety Circuit Description XV. TroubleshootingBurner Flame XVI. Maintenance Upright Filter Removal Flame Sensor Qualified Servicer onlyIgniter Qualified Servicer only Induced Draft and Circulator Blower MotorsTroubleshooting Chart Continuously Wiring Diagram for GMS8/GDS8/GHS8 Are Subject to Change Without Notice
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GMS8, GHS8, GDS8 specifications

Goodman Manufacturing, a well-reputed name in the HVAC industry, offers a comprehensive range of heating and cooling solutions. Among their notable products are the GDS8, GHS8, and GMS8 series, each designed to meet diverse customer needs while providing exceptional performance and energy efficiency.

The Goodman GDS8 gas furnace is known for its remarkable efficiency and reliability. Boasting an AFUE (Annual Fuel Utilization Efficiency) rating of up to 80%, the GDS8 converts a significant portion of fuel into usable heat, ensuring lower energy bills for homeowners. This model features a multi-speed blower motor that optimizes airflow, enhancing temperature consistency throughout the home, and reducing noise levels during operation. The GDS8 comes equipped with a durable heat exchanger crafted from high-quality steel, ensuring longevity and optimal heat transfer.

On the other hand, the GHS8 series represents Goodman’s commitment to high-efficiency heating. With an AFUE rating of up to 96%, the GHS8 is engineered for maximum performance. Its two-stage heating system allows for better temperature control, enabling the furnace to operate quietly and efficiently. Another standout feature is the ComfortBridge technology, which enhances the system’s ability to communicate and adapt to the home’s specific heating needs. This feature optimizes energy usage and increases comfort levels in any environment.

The Goodman GMS8 model is an exceptional choice for homeowners looking for a reliable gas furnace with a focus on energy efficiency. Similar to its counterparts, the GMS8 also delivers an AFUE of up to 96.5%. This unit features an advanced modulating gas valve that adjusts heating output based on the temperature requirements, creating a consistent and comfortable indoor climate. The GMS8 is also equipped with a high-efficiency ECM blower motor, which reduces energy consumption while improving airflow.

All three models feature Goodman’s quality construction, including a heavy-gauge cabinet that minimizes noise and enhances durability. They also are backed by Goodman’s limited lifetime warranty on the heat exchanger and a 10-year limited warranty on parts, providing customers with peace of mind regarding their investment. These furnaces are designed with efficiency and comfort in mind, making the GDS8, GHS8, and GMS8 ideal choices for homeowners looking to enhance their indoor environment while keeping energy costs in check.
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