Goodman Mfg GHS8, GDS8, GMS8 XII. START-UP Procedure and Adjustment, White-Rodgers Model 36F22

Page 22

NORMAL HEATING SEQUENCE

1.Thermostat calls for heat .

2.The induced draft blower is energized.

3.The igniter is energized and is allowed to preheat.

4.The gas valve is energized delivering gas to the burners and starting combustion.

5.The control checks for a signal from the flame sensor within seven seconds after the gas valve is energized. Gas will only continue to flow if a signal is present.

6.Circulator blower is energized on heat speed following a fixed thirty second blower on delay . Electronic air cleaner terminals are energized with circulator blower.

7.Thermostat contacts open when thermostat is satisfied, completing the call for heat.

8.. Gas valve closes, extinguishing flame.

9.Induced draft blower is de-energized following a two (2) - second post purge. Humidifier terminals are de-energized.

10.Circulator blower is de-energized following a selectable heat off delay period (90, 120, 150 or 180 seconds). Electronic air cleaner terminals are de-energized.

The adjustable delay-off timing allows the installer to customize the comfort level.

CONSTANT FAN

The continuous fan speed mode provides circulation.

XII. START-UP PROCEDURE AND ADJUSTMENT

Furnace must have a 115 VAC power supply properly connected and grounded. Proper polarity must be maintained for correct operation. An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access door in place except for inspection and maintenance.

This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is not operating properly, the control module LED will flash on and off in a factory- programmed sequence, depending on the problem encountered. This light can be viewed through the observation window in the blower access door. Refer to the Troubleshooting Chart for further explanation of the lighting codes.

Follow the start-up and adjustment items, refer to further information in Section XIII, Operational Checks.

FURNACE OPERATION

Purge gas lines of air prior to start-up. Do not purge lines into an enclosed burner compartment.

Check for leaks using an approved chloride-free soap and water solution, an electronic combustible gas detector, or other approved method. Verify that all required kits (propane gas, high altitude, etc.) have been appropriately installed.

NOTE: An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access doors in place except for inspection and maintenance.

FURNACE START-UP

1.Close the manual gas shutoff valve external to the furnace.

2.Turn off the electrical power to the furnace.

3.Set the room thermostat to the lowest possible setting.

4.Remove the burner compartment door.

NOTE: This furnace is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5.White-Rodgers Models 36F22/36G22: Push the switch to the OFF position.

6.Wait five minutes to clear out any gas. Then smell for gas, including near the floor.

7.If gas can be smelled following the five minute waiting period in Step 6, immediately follow the instructions on Page 4 of this manual. If you do not smell gas after five minutes:

White-Rodgers Models 36F22/36G22: Push the switch to the ON position.

8.Replace the door on the front of the furnace.

9.Open the manual gas valve external to the furnace.

10.Turn on the electrical power supply to the furnace.

11.Set the room thermostat to the desired temperature.

NOTE: There is an approximate 20 second delay between thermostat energizing and burner firing.

FURNACE SHUTDOWN

1.Set the thermostat to lowest setting.

2.Turn off the electrical power supply to the furnace.

3.White-Rodgers Models 36F22/36G22: Push switch to the OFF position.

4.Close manual gas shutoff valve external to the furnace.

5.Replace the door on the unit.

Gas Valve

On/Off

Selector

Switch

INLET

 

 

OUTLET

Inlet Pressure Tap

Pressure Regulator

Outlet (Manifold)

(Side of Valve)

 

Adjustment

 

Pressure Tap

 

(Under Cap Screw)

 

White-Rodgers Model 36F22

Outlet Pressure

Pressure Regulator

 

Adjustment

Tap

 

 

 

(Under Cap Screw)

 

 

INLET

 

 

OUTLET

Inlet Pressure

Gas Valve

Tap

On/Off

 

 

Selector

 

Switch

White-Rodgers Model 36G22

IO-242C

22

05/05

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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 InternationalNational Fire Protection Association, Inc IV. Location Requirements and ConsiderationsGeneral Suspended Furnace Clearances and AccessibilityHorizontal Installation Existing Furnace RemovalThermostat Influences Z223.1 Section GeneralEquipment 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 More Than 10 Feet From Ridge, Wall or Parapet Termination 10 Feet Or Less 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 ThermostatTwinning IX. GAS Supply and PipingHigh Altitude Derate Firing Rate Pressure Switch Changes Furnace input Kbtu/hr904BNA does not require a switch change Propane GAS ConversionGeneral Furnace Layout Upflow InstallationsGAS Piping Connections General Propane GAS Piping Charts Propane Gas Installation TypCounterflow Installations 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 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 onlyAdjustment Switches Temperature Rise MeasurementXIII. Operational Checks XV. Troubleshooting XIV. Safety Circuit DescriptionBurner 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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