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Roberts Gorden DAT75, DAT90, DAT100, DAT115 service manual Ignition Electrode and Flame Probe

Models: DAT115 DAT100 DAT90 DAT75

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DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

16.3 Ignition Electrode and Flame Probe.

	Fan/Limit Thermostat
	Burners
		Secondary
		Limit
		Thermostat
	Flame	Flame
	Probe	Flame
	Probe	Probe
	Remove all	Probe
	burner compartment
	screws to remove
	the burner	Remove
	compartment and	Remove
	compartment and	Screw
	access the	Screw
	access the
	“Front View”.

Burner Compartment

Front Views

Ignition

Electrode

Ignition

Electrode

(3 mm)

.120"

spark

gap

Burners

To replace the ignition electrode or flame probe, remove the electrical lead and screw. Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment.

Description	Part Number
Spark Electrode	90427411
Automatic Ignition Flame Probe	90439300
Burners (all models)	92000000

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Roberts Gorden DAT75, DAT90, DAT100, DAT115 service manual Ignition Electrode and Flame Probe

Contents

FOR YOUR SAFETY DO NOT use electrical switchesmanual thoroughly before installing or servicing DualAirPage TABLE OF CONTENTS SECTION 1 Heater SafetySECTION 2 Installer Responsibility SECTION 4 SpecificationsPage TABLE OF FIGURES Page Product Approval SECTION 1 HEATER SAFETY SECTION 2 INSTALLER RESPONSIBILITY2.1 Clearances to Combustibles 2.2 Corrosive Chemicals3.3 Minimum Required Installation Clearances 3.2Location and Suspension All models3.4 Clearances to Combustibles 3.5 Ventilation80 cm is necessary to service heater SECTION 4 SPECIFICATIONS 4.1 DAT Front ViewFront View Left Version Rear View4.2 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 SECTION 5 HEATER INSTALLATION 5.1 General 5.2 Handling5.3 Shelf Mounting and Suspension Figure 3 Suspension Methodsterminal. See Page 12, Figure 6.3 Type B22 ApplianceSee Page 10, Figure 4 through Page 12, Figure 6.3.1 Air Intake Terminal CoverFigure 5 Control Section & Upper Panel Figure 6 AlternateRoof Terminal MasterflashMetal Sleeve 25 mm air gap to7.1 Room Sealed Installation 7.2 Open Flued InstallationSECTION 7 AIR SUPPLY 7.3 Building VentilationDepartment for recommendations regarding duct resistance and design. Tel +447700 Figure 10 DuctingSECTION 9 GAS PIPING 9.1 ConnectionsSECTION 10 WIRING AND ELECTRICAL INFORMATION 10.2 Remote Control10.1 Electrical Supply 10.2.1 Remote Frost ThermostatTerminal Relay/FunctionOperation Number10.4 DAT Wiring Diagram See Page 20, SectionWIRING SITESECTION 10 WIRING AND ELECTRICAL INFORMATION 10.5 DAT Wiring DiagramSite wiring connections shown 10.6 DAT Site Connections at Main Circuit Board SECTION 11 COMMISSIONING Gas Fired Heater Cooling Coils/Condensers11.1 Pre-CommissionChecks 11.1.1 LouvresFigure 12 Automatic Burner Control Box Sequence Figure 13 Modureg Gas Valvetwo adjustments. See Page 22, Figure 11.5 Combustion Testing11.4.2 Commissioning the Gas Valves See Page 22, FigurePressure Switch 11.6 Turning Off the DualAir Unit11.7 External Controls 11.8 Complete the Commissioning12.2 Heater Operation 12.2.1 Warning LightsFigure 14 Heater Operating Sequence 12.3 Common User Controls12.3.3 Burner Lockout Reset Button 12.6Simple Fault Finding12.6.1 Simple Fault Finding burner faults 12.4 Cooling Section OperationFOR YOUR SAFETY 3.DO NOT use electrical switchesIf you smell gas 1.Open windows13.2 Burner Maintenance 13.3 Fan/Motor Assembly Maintenance13.4 Heat Exchanger Maintenance SECTION 13 SERVICING 13.1 Servicing Instructions13.5 Gas Control Valve Maintenance Replace faulty gas valves with genuineROBERTS GORDON replacement parts 13.6 Flue Fan Do not repair or disassemble on site14.3 Gas Valves SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.2 Burner Conversion SECTION 15 TROUBLESHOOTING 15.1 General Explosion HazardStart TROUBLESHOOT ENDSvalues, then reverse the test leads TROUBLESHOOT ENDS 15.3 Troubleshooting for Flame Supervision SystemSTART 15.4 Troubleshooting for Solenoid Valves 15.5 Troubleshooting for Main FanSTART START15.6 Troubleshooting for Fan Contactor SECTION 15 TROUBLESHOOTINGSTART TROUBLESHOOT ENDSSECTION 16 REMOVAL AND REPLACEMENT PARTS 16.1.1 Gas Valve Replacement - all modelsBurner Components See Page 5, Section16.2 Burner Compartment 16.2.1 Burner InjectorsEnsure gas tight fitting of injectors Ensure correct alignment with burners16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan 16.5 Heater Pressure Switch See Page 21, Section16.6.2 Pressure Switches Coil Pressure SwitchFilter Pressure Switch Figure 18 Cooling Coil Safety Devices16.8 Fan Motor Removal 16.7 Ignition Control16.7.1 S4563C 16.8.1 Fan Removal and Replacement Figure 19 Combination Fan/Limit Thermostat Fire HazardHeat exchanger damage may result BREAK-OFFLINK MUST BE REMOVEDPage Fire Hazard close to heaterinjury or property damage OPERATING INSTRUCTIONS