Goodman Mfg GMS8, GDS8 VII. Exterior Masonry Chimneys Category I Furnaces only, Checklist Summary

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Venting

THIS FURNACE IS NOT DESIGN CERTIFIED TO BE HORIZONTALLY VENTED.

Supply Air

Upflow Rotated Induced Draft Blower

To rotate the induced draft blwer counterclockwise, proceed as follows:

1.Disconnect electrical power from the furnace.

2.Disconnect the induced draft blower power leads, flue pipe, and pressure switch tubing.

3.Remove the round cutout from the appropriate side of the furnace.

4.Remove and save the four screws that hold the induced draft blower to the flue collector box.

5.Turn the induced draft blower 90 degrees clockwise, or counterclockwise. The gasket is adhered to the back plate and will rotate with the blower assembly.

6.Reinstall the induced draft blower on the flue collector box, using the four screws removed in Step 3. Tighten screws to provide an airtight seal.

7.Reconnect the induced draft blower power leads. NOTE: If the wires are not long enough, pull extra wire from the wire bundle in the blower compartment.

8.Remove and save the screw that holds the pressure switch to the furnace top panel.

9.Relocate the pressure switch to the same side as the flue outlet in the hole provided.

10.Reconnect the draft blower power leads, flue pipe, and pressure switch tubing. Make sure that all wires and the pressure switch tubing are at least one inch from the flue pipe, or any other hot surfaces.

11.Restore power to the furnace.

Counterflow units are shipped with the induced draft blower discharging from the top of the furnace. (“Top” as viewed for a counterflow installation.) Vent the furnace in accordance with the National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition. In Canada, vent the furnace in accordance with the National Standard of Canada, CAN/CSA B149.1 AND CAN/CSA B149.2 - latest editions and amendments.

WARNING

NEVER ALLOW THE PRODUCTS OF COMBUSTION, INCLUDING CARBON MONOXIDE, TO ENTER THE RETURN DUCTWORK OR CIRCULATION AIR SUPPLY.

VII. EXTERIOR MASONRY CHIMNEYS -

CATEGORY I FURNACES ONLY

An exterior masonry chimney is defined as a “Masonry chimney exposed to the outdoors on one or more sides below the roof line.” The ability to use a clay lined masonry chimney depends on a parameter not associated with interior chimneys. This variable is the geographic location of the installation. Researchers have discovered that the winter design temperatures have a direct impact on the suitability of this type of venting. In most situations, the existing masonry chimneys will require a properly sized metallic liner.

WARNING

POSSIBILITY OF PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS WHEN A SINGLE FAN ASSISTED CATEGORY I APPLIANCE (80% AFUE FURNACE) IS VENTED WITHOUT ADEQUATE DILUTION AIR. DO NOT CONNECT AN 80% FURNACE TO A MASONRY CHIMNEY UNLESS THE FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED APPLIANCE OR THE CHIMNEY IS LINED WITH A METAL LINER OR TYPE B METAL VENT. ALL INSTALLATIONS USING MASONRY CHIMNEYS MUST BE SIZED IN ACCORDANCE WITH THE APPROPRIATE VENTING TABLES. IF AN 80% FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED APPLIANCE, THE POTENTIAL FOR CONDENSATION DAMAGE MAY STILL EXIST WITH EXTREMELY COLD CONDITIONS, LONG VENT CONNECTORS, EXTERIOR CHIMNEYS, OR ANY COMBINATION OF THESE CONDITIONS. THE RISK OF CONDENSATION DAMAGE IS BEST AVOIDED BY USING THE MASONRY CHIMNEY AS A PATHWAY FOR PROPERLY SIZED METAL LINER OR TYPE B METAL VENT.

Crown

Wash

 

 

 

Roof Line

Clay Tile Size Generally

Clay Tile Size: 8" x 8" x12"

12" x 12" (24" Length)

 

(Each x 24" Length)

 

 

Attic Floor

 

1/2" to 1" Air Space

 

Second Floor

Throat

 

 

Damper

 

 

 

 

First Floor

 

 

Water Heater

Breech

F.A.F. Vent

Vent Connector

 

Connector

 

 

Fan Assisted

Natural Draft

Clean Out

Forced Air

Water Heater

 

Furnace

 

Basement Floor

Typical Multiple Flue Clay Tile Chimney

CHECKLIST SUMMARY

This checklist serves as a summary of the items to be checked before venting an 80+ furnace into a masonry chimney. In addition, we recommend that a qualified serviceman use this checklist to perform a yearly inspection of the furnace venting system.

This checklist is only a summary. For detailed information on each of the procedures mentioned, see the paragraph referenced with each item.

This inspection is based upon a draft topical report, “Masonry Chimney Inspection and Relining”, issued by the Gas Research Institute. While not yet finalized, we believe this report represents the best information on this subject which is currently available.

IO-242C

11

05/05

 

 

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Contents Installation & Operating Table of Contents XVI. Maintenance XII. Start-up Procedure and AdjustmentXIV. Safety Circuit Description XV. TroubleshootingTo the Owner II. SafetyTo the Installer Homeowner NoticeCSA International III. Product ApplicationAmerican National Standards Institute National Fire Protection AssociationGeneral IV. Location Requirements and ConsiderationsNational Fire Protection Association, Inc Existing Furnace Removal Clearances and AccessibilityHorizontal Installation Suspended FurnaceEquipment Located in Unconfined Spaces Z223.1 Section GeneralThermostat Influences Equipment Located in Confined Spaces Space, UnconfinedModel Minimum Vent Specially Engineered InstallationsVI. Category I Venting Vertical Venting Louvers and GrillesTypical Multiple Flue Clay Tile Chimney Checklist SummaryVII. Exterior Masonry Chimneys Category I Furnaces only Upflow Rotated Induced Draft BlowerCheck 1 Proper Chimney Termination Termination 10 Feet Or Less From Ridge, Wall or ParapetTermination More Than 10 Feet From Ridge, Wall or Parapet Check 5 Liner Condition Check 4 Debris in CleanoutCheck 7 Complete the Installation Check 3 Chimney Crown ConditionFIX 4 Relining VIII. Electrical ConnectionsFIX 2 -CHANGE Venting Arrangements FIX 3 Rebuild the CrownFossil Fuiel Applications Wiring HarnessIntegrated Ignition Control Volt Line ConnectionsHeating Heating/Cooling Room Thermostat Typical Field Wiring 24 VAC Control CircuitVolt Thermostat Wiring Setting the Heat AnticipatorHigh Altitude Derate IX. GAS Supply and PipingTwinning Propane GAS Conversion Pressure Switch Changes Furnace input Kbtu/hr904BNA does not require a switch change Firing RateGAS Piping Connections General Upflow InstallationsGeneral Furnace Layout GAS Piping Checks Propane Gas Installation TypCounterflow Installations Propane GAS Piping ChartsDuctwork Air Circulating AIR and FiltersXI. Sequence of Operation Integrated Ignition Control White-Rodgers Model 36G22 XII. START-UP Procedure and AdjustmentWhite-Rodgers Model 36F22 WHITE-RODGERS 36F22 GAS Valve White-Rodgers Model 36G22Measuring Inlet Gas Pressure Alternate Method GAS Supply Pressure MeasurementGAS Input Rate Measurement Natural GAS only GAS Manifold Pressure Measurement and AdjustmentXIII. Operational Checks Temperature Rise MeasurementAdjustment Switches Burner Flame XIV. Safety Circuit DescriptionXV. Troubleshooting XVI. Maintenance Induced Draft and Circulator Blower Motors Flame Sensor Qualified Servicer onlyIgniter Qualified Servicer only Upright Filter RemovalTroubleshooting 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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