Roberts Gorden DAT115 Gas Fired Heater, Cooling Coils/Condensers, Louvers, Electrical Checks

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SECTION 11: COMMISSIONING

SECTION 11: COMMISSIONING

Gas Fired Heater

Installation, service, commissioning and annual inspection of the heater must be done by a contractor qualified in the installation and service of gas-fired heating equipment. Read this manual carefully before installation, commissioning, operation, or service of this equipment. All components are accessed via the hinged door. Opening the door exposes live electrical connections and hot components.

Cooling Coils/Condensers

Installation, service, commissioning and annual inspection of the cooling equipment must be done by a contractor qualified in the installation and service of refrigeration equipment. Read condenser manufacturers manual carefully before installation, commissioning, operation, or service of this equipment.

WARNING

Electrical Shock Hazard

Use extreme caution while commissioning.

Failure to follow these instructions can result in death or electrical shock.

11.1 Pre Commission Checks

All pre commission checks must be carried out before lighting the heater.

Ensure that the heater and all controls are suitable for the gas, pressure and electrical supply to which they are to be connected.

11.1.1 Louvers

Where fitted, the air delivery louvers need to be set during commissioning to give the required air distribution.

WARNING

11.1.2 Electrical Checks

1.Check that all site wiring is connected in accordance with the appropriate wiring dia- grams on Page 17, Section 10.3 through Page 20, Section 10.6.

2.Check the correct fuse size is fitted; See Page 16, Section 10.1.

11.2 Gas Supply

All aspects of the gas installation including the gas meter must be inspected, tested for soundness and purged in accordance with local and national codes.

11.3 Mechanical Checks

1.Check that the fan is free to run and that the fan rotates in the correct direction. To reverse rota- tion transpose two of the incoming phase con- nections.

2.Check that the flue and air intake are installed in accordance with these instructions and local regulations.

3.Check that the settings of the Combination Fan/

Limit thermostat are correct - See Page 7, Sec- tion 4.3 and Page 8, Figure 4.4.

NOTE: The second limit thermostat is preset and sealed at the factory and is not adjustable.

11.4 Begin Commissioning

11.4.1 Before Operating the Heater

To ensure that all the controls are in safe working order, operate the heater for the first time with the isolating gas valve turned off.

1.Turn off the isolating gas valve

2.Using the installed external control, turn on the burner. The automatic sequence will now begin

as described on Page 22, Figure 12.

There will be no ignition of the burner and lockout will occur, proving the controls are operating correctly.

Cut Hazard

Turn off gas and electrical supply before maintenance. Fan can start automatically at any time.

Failure to follow these instructions can result in severe injury or product damage.

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Contents DualAir Page 2005 Page Table of Figures Page Product Approval Clearances to Combustibles Corrosive ChemicalsNational Standards and Applicable Codes Flue Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information Electrical SupplyInstallation 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 Heater Installation 5.1 General HandlingShelf Mounting and Suspension Flue Conversion Flue Installation 6.1 Flue InstallationType B22 Appliance Air Intake Terminal CoverControl Section & Upper Panel Vertical and Horizontal Flue Termination Type B22 Appliance Building Ventilation Room Sealed InstallationOpen Flued Installation Heaters Installed Within the Heated SpaceDuct resistance and design. Tel +44 0 Optional Heater Configurations 8.1 Distribution Duct14, .1 and to ensure that there is Department for recommendations regardingConnections Gas Connection with Stainless Steel Flex ConnectorRemote Control Remote Frost ThermostatSee 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 Electrical Checks Gas Fired HeaterCooling Coils/Condensers LouversAutomatic Burner Control Box Sequence Set Minimum Pressure Combustion Testing all modelsCommissioning the Gas Valves Commissioning the Gas ValveInstruction to the User Pressure SwitchTurning Off the DualAir Unit Complete the CommissioningSee Page 7, .3 and Page 8, Figure See Page 26, SectionSee Page 25, Section Heater OperationCooling Section Operation Burner Lockout Reset ButtonSimple Fault Finding all models Simple Fault Finding burner faultsServicing 13.1 Servicing Instructions Burner Maintenance13.3 Fan/Motor Assembly Maintenance Heat Exchanger MaintenanceGas Control Valve Maintenance all models Conversion Between Gases 14.1 General Burner ConversionGas 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 ContactorGas Valve Gas Valve Replacement all modelsBurner Components See Page 5, SectionBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter See Page 21, Section Heater Pressure SwitchPressure Switches Coil Pressure SwitchFilter Pressure Switch Ignition Control 16.7.1 S4563C Models 75 toFan 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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