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Roberts Gorden DAT115, DAT75 Gas Control Valve Maintenance, Do not repair or disassemble on site

Models: DAT115 DAT100 DAT90 DAT75

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SECTION 13: SERVICING

13.5 Gas Control Valve Maintenance

No regular maintenance is required on these devices. To change gas control valves, See Page 36, Step 16.1 and Page 40, Section 16.5.

Do not repair or disassemble on site.

Replace faulty gas valves with genuine

ROBERTS GORDON® replacement parts.

13.6 Flue Fan

The flue fan should not require maintenance. However, If the air pressure switch is causing burner lockout then remove the flue fan from the vent box. See Page 39, Section 16.4. Ensure that the fan is free to run and that the fan wheel is clean.

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Roberts Gorden DAT115, DAT75, DAT90, DAT100 service manual Gas Control Valve Maintenance, Do not repair or disassemble on site

Contents

DualAir FOR YOUR SAFETYDO NOT use electrical switches manual thoroughly before installing or servicingPage SECTION 4 Specifications TABLE OF CONTENTSSECTION 1 Heater Safety SECTION 2 Installer ResponsibilityPage TABLE OF FIGURES Page Product Approval 2.2 Corrosive Chemicals SECTION 1 HEATER SAFETYSECTION 2 INSTALLER RESPONSIBILITY 2.1 Clearances to Combustibles3.5 Ventilation 3.3 Minimum Required Installation Clearances3.2Location and Suspension All models 3.4 Clearances to Combustibles80 cm is necessary to service heater Rear View SECTION 4 SPECIFICATIONS 4.1 DATFront View Front View Left Version4.2 General Technical Data Table 4.3Technical Data Table - Heater Section Appliance Category II 2H/L 3B/P 4.4.2 DAT100 and 115 4 kW motor Figure 3 Suspension Methods SECTION 5 HEATER INSTALLATION 5.1 General5.2 Handling 5.3 Shelf Mounting and Suspension6.3.1 Air Intake Terminal Cover terminal. See Page 12, Figure6.3 Type B22 Appliance See Page 10, Figure 4 through Page 12, FigureFigure 6 Alternate Figure 5 Control Section & Upper Panel25 mm air gap to Roof TerminalMasterflash Metal Sleeve7.3 Building Ventilation 7.1 Room Sealed Installation7.2 Open Flued Installation SECTION 7 AIR SUPPLYFigure 10 Ducting Department for recommendations regardingduct resistance and design. Tel +44 77009.1 Connections SECTION 9 GAS PIPING10.2.1 Remote Frost Thermostat SECTION 10 WIRING AND ELECTRICAL INFORMATION10.2 Remote Control 10.1 Electrical SupplyNumber TerminalRelay/Function OperationSITE 10.4 DAT Wiring DiagramSee Page 20, Section WIRINGSECTION 10 WIRING AND ELECTRICAL INFORMATION 10.5 DAT Wiring DiagramSite wiring connections shown 10.6 DAT Site Connections at Main Circuit Board 11.1.1 Louvres SECTION 11 COMMISSIONING Gas Fired HeaterCooling Coils/Condensers 11.1 Pre-CommissionChecksFigure 13 Modureg Gas Valve Figure 12 Automatic Burner Control Box SequenceSee Page 22, Figure two adjustments. See Page 22, Figure11.5 Combustion Testing 11.4.2 Commissioning the Gas Valves11.8 Complete the Commissioning Pressure Switch11.6 Turning Off the DualAir Unit 11.7 External Controls12.3 Common User Controls 12.2 Heater Operation12.2.1 Warning Lights Figure 14 Heater Operating Sequence12.4 Cooling Section Operation 12.3.3 Burner Lockout Reset Button12.6Simple Fault Finding 12.6.1 Simple Fault Finding burner faults1.Open windows FOR YOUR SAFETY3.DO NOT use electrical switches If you smell gasSECTION 13 SERVICING 13.1 Servicing Instructions 13.2 Burner Maintenance13.3 Fan/Motor Assembly Maintenance 13.4 Heat Exchanger MaintenanceDo not repair or disassemble on site 13.5 Gas Control Valve MaintenanceReplace faulty gas valves with genuine ROBERTS GORDON replacement parts 13.6 Flue Fan14.3 Gas Valves SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.2 Burner Conversion TROUBLESHOOT ENDS SECTION 15 TROUBLESHOOTING 15.1 GeneralExplosion Hazard Startvalues, then reverse the test leads TROUBLESHOOT ENDS 15.3 Troubleshooting for Flame Supervision SystemSTART START 15.4 Troubleshooting for Solenoid Valves15.5 Troubleshooting for Main Fan STARTTROUBLESHOOT ENDS 15.6 Troubleshooting for Fan ContactorSECTION 15 TROUBLESHOOTING STARTSee Page 5, Section SECTION 16 REMOVAL AND REPLACEMENT PARTS16.1.1 Gas Valve Replacement - all models Burner ComponentsEnsure correct alignment with burners 16.2 Burner Compartment16.2.1 Burner Injectors Ensure gas tight fitting of injectors16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan See Page 21, Section 16.5 Heater Pressure SwitchFigure 18 Cooling Coil Safety Devices 16.6.2 Pressure SwitchesCoil Pressure Switch Filter Pressure Switch16.8 Fan Motor Removal 16.7 Ignition Control16.7.1 S4563C 16.8.1 Fan Removal and Replacement BREAK-OFFLINK MUST BE REMOVED Figure 19 Combination Fan/Limit ThermostatFire Hazard Heat exchanger damage may resultPage OPERATING INSTRUCTIONS Fire Hazardclose to heater injury or property damage