Roberts Gorden 30, 75, 100, 125, 45, 60 service manual To Turn the Heater Off, Simple Troubleshooting

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UHA LOW PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

2.The automatic firing sequence will begin as described on Page 30, Figure 16. The heater will now operate automatically under the control of the on site controls.

11.4.2 To Turn the Heater Off

Set the thermostat to the "OFF" position. The burner will turn off immediately.

The fan will continue to run for 90 seconds. To restart, turn the thermostat above room temperature.

11.5 Simple Troubleshooting

Some possible reasons for the heater not operating are:

1.Gas supply not "ON".

2.Electricity supply not "ON".

3.The time and/or temperature controls are not "ON".

4.A limit switch may have operated. This may be caused by an interruption of the electrical supply, failure of the distribution fan or vent or

heat exchanger blockage.

If a temperature limit switch persistently trips, there is a fault which must be investigated by a contractor qualified in the installation and service of gas-fired heating equipment.

11.5.1 Simple Troubleshooting (Burner Faults)

If the burner fails to ignite for any reason, it will retry for ignition (four trials total). After four unsuccessful ignition trials, the control will put the heater into lockout for one hour.

Lockout should not occur during normal operation of the heater and indicates there is a fault condition which must be corrected. There is an LED light on the ignition control that flashes codes to assist in fault correction. See Page 34, Figure 20 for LED indication codes.

Figure 20: LED Diagnostic Codes

LED INDICATION

FAULT MODE

 

 

Slow Flash

Normal Operation - No call for heat.

 

 

Fast Flash

Normal Operation - Call for heat.

 

 

2 Flashes

Ignition Lockout - No flame detected.

 

 

3 Flashes

Airflow Fault - Pressure switch open or closed.

 

 

4 Flashes

Temperature Limit or

 

Manual Reset Limit Switch Open

 

 

5 Flashes

Flame Sense Error - Gas valve not energized.

 

 

Steady On

Internal Control Failure

 

 

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Contents Blackheat Page Roberts-Gordon LLC Page Table of Figures Page Manpower Requirements Heater SafetySafety Labels and Their Placement UHA 30 45 Label Placement UHA 60 75 Label Placement UHA 100 125 Label Placement Installer Responsibility Wall TagCorrosive Chemicals National Standards and Applicable CodesMinimum Required Installation Clearances Critical Considerations 3.1 Basic InformationManufactured Units Clearances to CombustiblesElectrical Supply Gas SupplyVent National Standards and Applicable Codes High Altitude Shelf Mounting and Suspension Major Components 5.1 GeneralWall Mounting Suspension Methods Wall Shelf Mounting and Hanging Suspension Vertical Louvers Optional Vent Installation VentingChanging Vent and Air Intake Orientation United States RequirementsStandard Vented Heaters Models Uhax 30 Separated Combustion Heaters Models Uhaxs 30Unvented Operation Horizontal VentingVertical Venting Length RequirementsMaximum Vent Lengths Vent MaterialVent and Roof Detail Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box Vertical Separated Combustion Installation Unvented InstallationAIR Supply Building VentilationGAS Piping ConnectionsWiring Positioning ThermostatsFan Control Low Voltage Thermostat with One HeaterLow Voltage Thermostat with Multiple Heaters 30 Low Voltage Thermostat with Multiple Heaters 60 Internal Wiring Diagram TransformerLadder Wiring Diagram FlameElectrical Connection to the Heater Operation and Maintenance Pressure Regulator Gas Outlet Outlet Pressure Check Gas Rate Pressure SwitchTurning Off the Heater Complete Start-Up Instruction to the UserUser Instructions User InstructionsHeater Operation Lighting Instructions 11.4.1 To Turn On HeaterSimple Troubleshooting Burner Faults Simple TroubleshootingTo Turn the Heater Off Servicing Maintenance Checklist Venting and Air Intake PipeVicinity of the Heater Vehicles and OtherWhen installed Wall Tag Combustion Air IntakePipe Heat ExchangerTroubleshooting 13.1 General Troubleshooting For Automatic Ignition Burner Systems Conduct start-up procedure as shown on Page 29, SectionTroubleshooting for Flame Supervision System Troubleshooting for Gas Valves Troubleshooting for Flue BlowerReplacement Parts Burner ComponentsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Louver and Louver Springs Re-usedFlue Blower Vertical Installation Axial Fan/Guard/Motor Assembly Ignition ControlTo Replace the Fan Assembly Fan Removal and ReplacementLimit Switches Removal and Replacement Specifications 15.1 Dimension Data Model UhaxsGeneral Technical Data Table All Models Technical Data Table All ModelsWarranty is Void if Roberts Gordon will not PAY forRoberts-Gordon Limitations on Authority RepresentativesPage Owner Warranty Registration Card Page Page Some objects can catch fire or explode when placed
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60, 30, 45, 125, 100 specifications

Roberts Gordon is a recognized leader in the manufacturing of innovative heating solutions, with a diverse product line including the 100, 125, 75, 45, and 60 series of radiant tube heaters. Each model is designed to meet specific heating needs while emphasizing efficiency, durability, and performance.

The Robert Gordon 100 series is known for its high efficiency and ability to provide consistent warmth in large industrial spaces. It features advanced infrared technology, which heats objects and surfaces directly, resulting in quicker temperature increases and enhanced comfort. This model is equipped with modulating burners that allow for optimal gas usage and can be easily integrated into existing systems.

The 125 series builds upon the efficiency of the 100 model while offering increased heating capacity. Its robust design ensures it can handle the demands of larger applications, such as warehouses and manufacturing facilities. With enhanced control options, users can tailor the heating output to match specific operational requirements, reducing energy consumption.

The 75 series offers a compact solution for smaller commercial spaces, providing a reliable heating source without taking up excessive floor space. Its lightweight design facilitates easy installation, while the modular approach allows for scalability to meet changing heating demands. This series emphasizes sustainability, utilizing advanced combustion technologies that minimize emissions.

For smaller applications, the 45 series stands out with its efficient heating capabilities in confined spaces. This series features simple, yet effective controls, enabling straightforward operation. The robust construction ensures durability, making it well-suited for different commercial environments, including retail settings or small workshops.

Finally, the 60 series combines the best features of the range with energy conservation as a primary focus. Its innovative design incorporates smart technology to monitor energy usage and optimize performance. The heaters are equipped with the latest in safety features, providing peace of mind for users.

Overall, Roberts Gordon’s radiant tube heaters showcase a commitment to high-quality heating solutions that cater to a variety of industrial and commercial applications. With energy efficiency, superior durability, and advanced heating technologies as core characteristics, Roberts Gordon remains a trusted choice for businesses looking to enhance their heating performance.