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Roberts Gorden CTCU 11, CTCU 27, CTCU 15, CTCU 22, CTCU 7, CTCU 32 service manual General, 32 of

Models: CTCU 32 CTCU 7 CTCU 22 CTCU 11 CTCU 15 CTCU 27

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COMBAT® CTCU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

15.1 General

For your safety and optimum heater performance, use only ROBERTS GORDON® replacement parts.

Conduct Commissioning procedure as shown on Page 21, Section 11.

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Roberts Gorden CTCU 11, CTCU 27, CTCU 15, CTCU 22, CTCU 7, CTCU 32 service manual General, 32 of

Contents

CTCU CombatModels CTCU If you smell gasPage Page Page TABLE OF FIGURES Page Product Approval 1 of1.1 Manpower Requirements SECTION 1 HEATER SAFETYFigure 1 Front and Back Panel Label Placement 1.2 Safety Labels and Their PlacementPart Number Figure 2 Side Panel Label Placement3 of 2.2 Corrosive Chemicals SECTION 2 INSTALLER RESPONSIBILITY2.1 Clearances to Combustibles Product Damage Hazard3.1 Required Clearances to Combustibles SECTION 3 CLEARANCES TO COMBUSTIBLESFire Hazard 80 cm is necessary to service DANGER Heaters may be installed vented or unventedDisconnect electric before service SECTION 4 CRITCAL CONSIDERATIONS 4.1 Ventilation140 for SECTION 5 SPECIFICATIONS 5.1 CTCUA All ModelsDimension Data - CTCUA All Models 8 of5.2 General Technical Data Table All Models 6.4 Handling SECTION 6 HEATER INSTALLATION 6.1 General6.2 Basic Information 6.5Suspension and Shelf Mounting11 of Figure 4: Suspension MethodsExisting cabinet screws must be re-used Figure 5 Shelf Mounting and Hanging Suspension Figure 6 Vertical Louvres OptionalCut/Pinch Hazard 7.4 Type B22 ApplianceSee Page 14, Figure 7 through Page 14, Figure Edges are sharpFigure 7 Flue and Roof Detail 14 of15 of 8.2.1 Heaters Installed Within the Heated Space 8.1 Room Sealed Installation8.2 Open Flued Installation SECTION 8 AIR SUPPLYSECTION 9 GAS PIPE WORK 9.1 Connections18 of 10.1 Electrical Supply SECTION 10 WIRING AND ELECTRICAL INFORMATION10.2 Remote Controls 10.2.1 Burner Controls Thermostat10.3 CTCUA Wiring Diagram Models 20 of11.1 Pre-CommissionChecks SECTION 11 COMMISSIONINGGas Fired Heater 11.1.1 LouvresFigure 11 Automatic Burner Control Box Sequence 11.4 Begin Commissioning11.4.1 Before Operating the Heater Check Gas Rate 11.5 Combustion TestingFigure 12 Gas Valve for Heater Models 11.6 Turning Off the Heater11.8 Complete the Commissioning 11.9 Instruction to the Userduring installation heater before servicebefore service SECTION 12 USER INSTRUCTIONS12.5.1 Simple Fault Finding Burner Faults 12.3.3 Burner Lockout Reset Button12.5 Simple Fault Finding 12.3.2 Limit Thermostat13.3 Fan/Motor Assembly Maintenance Turn off gas and electrical supply before service13.2 Burner Maintenance 13.4 Heat Exchanger Maintenance13.6 Flue Fan 13.5 Gas Control Valve Maintenance13.7 Maintenance Checklist The Vicinity of the HeaterWindow when installedBurner Observation Flue Blower Scroll, Wheel14.3 Gas Valves SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.2 Burner Conversion heater before service SECTION 15 TROUBLESHOOTINGDisconnect electric before service before service15.1 General 32 ofSECTION 15 TROUBLESHOOTING 33 ofNOTE Minimum flame probe current 1 µA DC 15.3 Troubleshooting for Flame Supervision System15.4 Troubleshooting for Solenoid Valves 34 of35 of 15.5 Troubleshooting for Main FanSECTION 15 TROUBLESHOOTING 16.1 Gas Valve SECTION 16 REMOVAL AND REPLACEMENT PARTSBurner Components 16.1.1 Models16.2 Burner Compartment 16.2.1 Burner Injectors16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan Vertical Installation Models 39 of16.5 Flue Fan Vertical Installation Models 40 of16.6 Pressure Switch Carbon Monoxide Hazard16.8.2 To Replace the Fan Assembly 16.8 CTCUA Axial Fan/Guard/Motor Assembly16.8.1 Fan Removal and Replacement 16.7 Ignition ControlPage Fire Hazard 80 cm is necessary to service heaterdestratification fans are installed close to heater