Manuals / Lennox International Inc / Household Appliance / Boiler

Lennox International Inc GWB8-245E-2 Check Thermostat Operation, Operating Your Boiler

Models: GWB8-299E-2 GWB8-245E-2 GWB8-280E-2 Gas-Fired Hot Water Boiler GWB8-262E-2

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14 - OPERATING YOUR BOILER

CHECK THERMOSTAT OPERATION

A.When set above temperature indicated on thermostat, boiler should ignite.

B.Verify thermostat turns boiler off when room temperature reaches selected setting and starts boiler operating when room temperature falls a few degrees.

C.After setting limit control to limit setting, check to see if it shuts off gas supply to burners. Turn your thermostat up to call for heat and let boiler run until temperature of water reaches limit setting. Gas valve should shut off and circulator running until thermostat is satisﬁed, or water cools enough to restart burners through limit control.

D.Set thermostat for desired temperature. Conditions in your home and location of thermostat will govern this setting.

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Lennox International Inc GWB8-245E-2, GWB8-262E-2, GWB8-280E-2 Check Thermostat Operation, Operating Your Boiler

Contents

GAS-FIRED HOT WATER BOILERS before installingPRODUCT LITERATURE INSTALLATION INSTRUCTIONSINCH 1 - DIMENSIONS Figure 1 - Dimensions Table 1 - DimensionsDIMENSIONS BOILER MODEL NUMBER2 - BOILER RATINGS AND CAPACITIES Table 2 - Ratings and Capacities BOILERS FOR USE AT HIGH ALTITUDEUsed to address practices not related to personal injury 3 - TABLE OF CONTENTSDANGER DO NOT obstruct air openings to the boiler roomMinimum Clearances to Combustible 4 - INSTALLATION PROCEDURETable 3 - MINIMUM CLEARANCE DIMENSIONS BOILER5 - VENTILATION & COMBUSTION AIR Table 4 - Minimum Room Volume, Indoor Air OnlyRoom Cubic Feet Volume Input MbhDischarge line shall 6 - CONNECTING SUPPLY AND RETURN PIPINGFigure 2 - Safety Relief Valve allow complete drainage of the valve and the discharge lineFigure 3 - Temperature Pressure Gauge FOR USE WITH COOLING UNITSFigure 4 - Typical Hot Water Piping Figure 5 - Chilled Water Piping 6 - CONNECTING SUPPLY AND RETURN PIPINGFigure 7 - BYPASS PIPING - CIRCULATOR ON RETURN Bypass Piping Required For High Mass Large Water Content SystemsFigure 6 - BYPASS PIPING - CIRCULATOR ON SUPPLY 6 - CONNECTING SUPPLY AND RETURN PIPINGCheck Your Chimney Connecting The Vent Damper And Vent Connector7 - CHIMNEY AND VENT PIPE CONNECTION Chimney SizingRemoving Existing Boiler From Common Venting System Minimum Vent Pipe Clearance7 - CHIMNEY AND VENT PIPE CONNECTION Figure 10 - Vent Damper Position Indicator Figure 8 - Vent Damper InstallationFigure 9 - Vent Damper Placement Vent Damper Manual OperationDo not try to light any appliance WHAT TO DO IF YOU SMELL GAS9 - GAS SUPPLY PIPING If you cannot reach your gas supplier, call the ﬁre departmentELECTRIC POWER SUPPLY 10 - ELECTRICAL WIRINGVENT DAMPER WIRING THERMOSTAT INSTALLATIONFigure 12 - Integrated High Limit Electronic Ignition Control 11 - WIRING DIAGRAMSInducer is not an option Figure 13 - Integrated High Limit Electronic Ignition Control 11 - WIRING DIAGRAMSFigure 14 - Integrated High Limit Electronic Ignition Control 11 - WIRING DIAGRAMSNever run water in a hot empty boiler 12 -GENERAL INSTRUCTIONSFILLING SYSTEM WITH WATER For Your Safety, Read Before Operating service technician to inspect appliance and toLIGHTING PROCEDURE FOR BOILER WITH INTERMITTENT PILOT SYSTEM 13 - LIGHTING INSTRUCTIONSADJUST PILOT BURNER SAFETY PILOTGAS VALVE SAFETY SHUTDOWN TEST ADJUST LIMIT CONTROLSCHECK THERMOSTAT OPERATION 14 - OPERATING YOUR BOILER15 - MAINTAINING YOUR BOILER SAFETY RELIEF VALVECLEANING YOUR BOILER AND BURNERS BURNERSControls out of adjustment 16 - SERVICE HINTSNo electric power to boiler Reset according to instructionsDIAPHRAGM TYPE EXPANSION TANK 17 - EQUIPMENT AND OPTIONAL ACCESSORIESWATER TEMPERATURE CONTROL AIR ELIMINATING FITTING AIR PURGER17 - EQUIPMENT AND OPTIONAL ACCESSORIES ROLLOUT SWITCH FLAME ROLLOUT SAFETY SHUTOFFBLOCKED VENT SAFETY SWITCH BLOCKED VENT SAFETY SHUTOFF APPENDIX A - CONTROL MODULE A.1 Installation Environment ConsiderationsA.3 Adjusting Settings Do not use corrosive chemicals around or on module or gas controlAPPENDIX A - CONTROL MODULE A.5 OperationTable 6 - Operation State Codes StateA.8 Troubleshooting Error Codes A.6 Boiler High Limit Temperature ControllerA.7 Troubleshooting Figure 20 - Basic Control Algorithm ExampleDeﬁnition APPENDIX A - CONTROL MODULE Table 7 - Troubleshooting Error CodesError A.9 Intermittent PilotCorrect Pilot Flame 3/8 to 1/2 inch in ﬂame. See Figure 16, Page Figure 19 - Troubleshooting Pilot FlameAPPENDIX A - CONTROL MODULE ECR International, Inc PRODUCT LITERATURELennox Industries Inc. Dallas, Texas Manufactured by