Roberts Gorden 400, 200, 350, 150, 300, 175, 225 250 service manual Burner Compartment, Burner Injectors

Page 38

COMBAT® UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

14.2 Burner Compartment

The burner compartment is a sealed compartment. Following any work, re-seal the compartment with the gas pipe rubber seal fully in place and all screws fitted and tight.

Burner compartment

cover

Flame probe

Viewing port

for flame probe

Remove flexible

air duct from spigot

Ignition electrode

NOTE: Flexible duct only applies

for models UHAS.

Viewing port

for ignition electrode

Remove

access plate Rubber Seal

Remove screws and pull off burner cover

14.2.1 Burner Injectors

Ensure gas tight fitting of injectors.

Ensure correct alignment with burners.

Ensure all pipe joints are gas tight.

 

 

UHA[S]

UHA[S]

UHA[S]

UHA[S]

UHA[S]

UHA[S]

UHA[S]

UHA[S]

MODEL

 

150

175

200

225

250

300

350

400

 

 

 

 

 

 

 

 

 

 

Orifice Quantity

 

7

8

9

10

11

12

14

14

 

 

 

 

 

 

 

 

 

 

Natural Gas (G20)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Orifice Marking

 

43

43

2.25 mm

2.25 mm

2.25 mm

40

40

40

 

 

 

 

 

 

 

 

 

 

P/N

 

91930043

91930043

91930225

91930225

91930225

91930040

91930040

91930040

 

 

 

 

 

 

 

 

 

 

Propane (G31)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Orifice Marking

 

1.35 mm

1.35 mm

54

54

54

1.45 mm

53

53

 

 

 

 

 

 

 

 

 

 

P/N

 

91930135

91930135

91930054

91930054

91930054

91930145

91930053

91930053

 

 

 

 

 

 

 

 

 

 

32

Image 38
Contents Combat Page Roberts-Gordon LLC Page Table of Figures Page Heater Safety Manpower RequirementsCorrosive Chemicals Installer ResponsibilityWall Tag National Standards and Applicable CodesCritical Considerations 3.1 Basic Information Minimum Required Installation ClearancesSeparated Combustion Installation Clearances to CombustiblesInstallation Clearances and Clearances to Combustibles National Standards and Applicable Codes Major Components 5.1 General SuspensionUnited States Requirements Vent InstallationVenting 6.1 Venting Canadian RequirementsHorizontal Venting Separated Combustion Heaters Models Uhas 150Unvented Operation Vertical VentingVent Material Vent and Roof DetailStandard Vented Heater Common Vertical Vent Termination Concentric Vent Box Horizontal Building Ventilation Unvented InstallationAIR Supply Outside Combustion Air SupplyGAS Piping ConnectionsPositioning Thermostats WiringLow Voltage Thermostat with One Heater Fan ControlUhas Series Internal Wiring Diagram GAS ValveUhas Series Ladder Wiring Diagram Electrical Connection to the Heater Electrical Checks Operation and MaintenanceLouvers Mechanical ChecksAutomatic Burner Control Sequence Turning Off the Heater Pressure SwitchCheck Gas Rate Complete the Start-UpHeater Operation Simple TroubleshootingSimple Troubleshooting Burner Fault Lighting Instructions 11.3.1 To Turn On HeaterUser Instructions Heat Exchanger Maintenance Burner Maintenance12.3 Fan/Motor Assembly Maintenance Gas Valve MaintenanceVehicles and Other Maintenance ChecklistVicinity of the Heater ObjectsWindow When installedBurner Observation Flue Blower Scroll, WheelTroubleshooting 13.1 General Troubleshooting For Automatic Ignition Burner Systems Result in death or electrical shockTroubleshooting for Flame Supervision System Conduct start-up procedure as shown on Page 19, Section Troubleshooting for Gas ValvesTroubleshooting for Flue Blower Replacement Parts Burner ComponentsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Description Part NumberExchangerAssembly Louvers and Louver SpringUhas Axial Fan/Guard/Motor Assembly Ignition ControlLimit Switches Removal and Replacement Fan Removal and ReplacementTo Replace the Fan Assembly Specifications Standard Models 150 400 Uhas Series Dimension DataGeneral Technical Data Table All Models Technical Data Table All ModelsPage ROBERTS-GORDON will not PAY for Warranty is Void ifROBERTS-GORDON will PAY for Limitations on Authority RepresentativesPage Page Page Page Fire Hazard
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225 250, 175, 300, 400, 150 specifications

Roberts Gorden is a recognized leader in the field of heating solutions, particularly renowned for the development of its innovative radiant heating systems. The lineup of models including the Roberts Gorden 250, 300, 400, 150, and 225 features a blend of advanced technology, exceptional efficiency, and versatile applications that cater to various industrial and commercial needs.

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