Roberts Gorden DAT90, DAT75, DAT100, DAT115 service manual Combination Fan/Limit Thermostat

Page 49

SECTION 16: REMOVAL AND REPLACEMENT PARTS

Figure 19: Combination Fan/Limit Thermostat

WARNING

Fire Hazard

Break-off link must be removed from replacement thermostat.

Heat exchanger damage may result.

Failure to follow these instructions can result in death, injury, property damage or product damage.

Dial

Set Point 3 Limit Temp.

Set Point 2 Fan On

Set Point 1 Fan Off

Fan Terminals

Manual Fan Switch

(White)

Pull out for normal operation. Push in for continuous fan.

Push Screwdriver in and hold to release

Push in Lock

Wire to Controlled Equipment

Limit Stat

Manual Reset Button (Red)

Limit Terminals

BREAK-OFF LINK

MUST BE REMOVED

43

Image 49

Contents DualAir Page 2005 Page Table of Figures Page Product Approval Corrosive Chemicals Clearances to CombustiblesNational Standards and Applicable Codes Critical Considerations 3.1 Basic Information Minimum Required Installation ClearancesElectrical Supply FlueInstallation Clearances and Clearances to Combustibles Front View Left Version Specifications 4.1 DAT all modelsModel 100 115 Fan Data General Technical Data Table all modelsModel 100 115 2 DAT100 and 115 4 kW motor Handling Heater Installation 5.1 GeneralShelf Mounting and Suspension Type B22 Appliance Flue Installation 6.1 Flue InstallationAir Intake Terminal Cover Flue ConversionControl Section & Upper Panel Vertical and Horizontal Flue Termination Type B22 Appliance Open Flued Installation Room Sealed InstallationHeaters Installed Within the Heated Space Building Ventilation14, .1 and to ensure that there is Optional Heater Configurations 8.1 Distribution DuctDepartment for recommendations regarding Duct resistance and design. Tel +44 0Connections Gas Connection with Stainless Steel Flex ConnectorRemote Frost Thermostat Remote ControlSee Page 17, .3 through Page 18, Section Number See Page 20, Section DAT Wiring Diagram ModelsSite wiring connections shown DAT Site Connections at Main Circuit Board Cooling Coils/Condensers Gas Fired HeaterLouvers Electrical ChecksAutomatic Burner Control Box Sequence Commissioning the Gas Valves Combustion Testing all modelsCommissioning the Gas Valve Set Minimum PressureTurning Off the DualAir Unit Pressure SwitchComplete the Commissioning Instruction to the UserSee Page 25, Section See Page 26, SectionHeater Operation See Page 7, .3 and Page 8, FigureSimple Fault Finding all models Burner Lockout Reset ButtonSimple Fault Finding burner faults Cooling Section Operation13.3 Fan/Motor Assembly Maintenance Burner MaintenanceHeat Exchanger Maintenance Servicing 13.1 Servicing InstructionsGas Control Valve Maintenance all models Burner Conversion Conversion Between Gases 14.1 GeneralGas Valves Conduct Commissioning procedure as shown on Page 21, Section Result in death or electrical shock Troubleshooting For Automatic Ignition Burner SystemsStart Troubleshooting for Flame Supervision SystemTroubleshooting for Main Fan Troubleshooting for Solenoid ValvesConduct Commissioning procedure as on Page 21, Section Troubleshooting for Fan ContactorBurner Components Gas Valve Replacement all modelsSee Page 5, Section Gas ValveBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter See Page 21, Section Heater Pressure SwitchCoil Pressure Switch Pressure SwitchesFilter Pressure Switch 16.7.1 S4563C Models 75 to Ignition ControlFan Motor Removal Fan Removal and Replacement Combination Fan/Limit Thermostat Page Page Some objects can catch fire or explode when placed

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