Goodman Mfg GHS8, GDS8, GMS8 instruction manual Installation & Operating

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These furnaces comply with requirements embodied in the American National Standard

/National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces.

®

CUS

INSTALLATION & OPERATING

INSTRUCTIONS for

GMS8, GDS8 and GHS8

GAS FIRED WARM AIR FURNACE

SINGLE STAGE

(CATEGORY 1)

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to know the product better than the customer. This includes all

safety precautions and related items.

Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all

safety warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous

than when the unit is in operation.

Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a

customer in its safe use.

Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good

safety practices...follow them.

The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there

is a direct conflict between existing practices and the content of this manual, the precautions listed here take

precedence.

*NOTE: Please contact your distributor or our website for the applicable product data book referred to in this manual.

IO-242C

05/05

 

© 2005 Goodman Manufacturing Company, L.P.

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Contents Installation & Operating Table of Contents XIV. Safety Circuit Description XII. Start-up Procedure and AdjustmentXV. Troubleshooting XVI. MaintenanceTo the Installer II. SafetyHomeowner Notice To the OwnerAmerican National Standards Institute III. Product ApplicationNational Fire Protection Association CSA InternationalNational Fire Protection Association, Inc IV. Location Requirements and ConsiderationsGeneral Horizontal Installation Clearances and AccessibilitySuspended Furnace Existing Furnace RemovalThermostat Influences Z223.1 Section GeneralEquipment Located in Unconfined Spaces Equipment Located in Confined Spaces Space, UnconfinedVI. Category I Venting Vertical Venting Specially Engineered InstallationsLouvers and Grilles Model Minimum VentVII. Exterior Masonry Chimneys Category I Furnaces only Checklist SummaryUpflow Rotated Induced Draft Blower Typical Multiple Flue Clay Tile ChimneyTermination More Than 10 Feet From Ridge, Wall or Parapet Termination 10 Feet Or Less From Ridge, Wall or ParapetCheck 1 Proper Chimney Termination Check 7 Complete the Installation Check 4 Debris in CleanoutCheck 3 Chimney Crown Condition Check 5 Liner ConditionFIX 2 -CHANGE Venting Arrangements VIII. Electrical ConnectionsFIX 3 Rebuild the Crown FIX 4 ReliningIntegrated Ignition Control Wiring HarnessVolt Line Connections Fossil Fuiel ApplicationsVolt Thermostat Wiring Typical Field Wiring 24 VAC Control CircuitSetting the Heat Anticipator Heating Heating/Cooling Room ThermostatTwinning IX. GAS Supply and PipingHigh Altitude Derate 904BNA does not require a switch change Pressure Switch Changes Furnace input Kbtu/hrFiring Rate Propane GAS ConversionGeneral Furnace Layout Upflow InstallationsGAS Piping Connections General Counterflow Installations Propane Gas Installation TypPropane GAS Piping Charts GAS Piping ChecksXI. Sequence of Operation Integrated Ignition Control Circulating AIR and FiltersDuctwork Air White-Rodgers Model 36F22 XII. START-UP Procedure and AdjustmentWhite-Rodgers Model 36G22 Measuring Inlet Gas Pressure Alternate Method White-Rodgers Model 36G22GAS Supply Pressure Measurement WHITE-RODGERS 36F22 GAS ValveGAS Input Rate Measurement Natural GAS only GAS Manifold Pressure Measurement and AdjustmentAdjustment Switches Temperature Rise MeasurementXIII. Operational Checks XV. Troubleshooting XIV. Safety Circuit DescriptionBurner Flame XVI. Maintenance Igniter Qualified Servicer only Flame Sensor Qualified Servicer onlyUpright Filter Removal 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.