Roberts Gorden 125, 75, 100, 45, 30, 60 service manual Troubleshooting 13.1 General

Page 44

UHA LOW PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 13: TROUBLESHOOTING 13.1 General

START

Are gas & electrical

No

Turn on supplies.

supplies on?

 

 

WARNING

Explosion Hazard

Installation, service and annual inspection must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier.

Turn off gas and electrical supplies before performing service or maintenance.

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

Yes

Is ignition control showing a

"4 flashes" LED code?

Noo

Is ignition control showing a

"2 flashes" LED code?

No

Does the flue

blower run?

 

UHA 30 - 75: Press in reset

 

button on manual reset limit

 

switch. UHA 100 - 125: Wait

Yes

10 - 15 minutes for limit Yes

 

switch to cool. Does fan

 

stop running?

 

No

 

Replace temperature

 

limit switch.

 

Burner has locked out due

Yes

to ignition failure. Use

Troubleshooting for

 

 

Automatic Ignition Burner

 

Systems section to test

 

burner.

No

Use Troubleshooting for

Flue Blower section to test

 

fan.

Fan and limit switch are operating normally.

Yess

With external controls (i.e.

 

Has burner “Locked Out”? No

thermostat) on, does the No

burner continue through the

 

 

heating cycle?

 

 

 

 

Yes

 

 

Use Troubleshooting for

 

 

Automatic Ignition Burner

 

 

Systems section to test burner.

Yes

 

 

Heater Operating

 

If problems persist, contact

No

Roberts-Gordon LLC at

TROUBLESHOOT ENDS.

www.rg-inc.com

 

The limit switch has

 

tripped. See Manual Reset No

Replace limit switch.

Limit Switch Figure.

 

Yes

Ensure proper air flow clearance for axial fan. Open louvers slightly.

Replace axial fan if it does

not operate.

38

Image 44
Contents Blackheat Page Roberts-Gordon LLC Page Table of Figures Page Safety Labels and Their Placement Heater SafetyManpower Requirements 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 CombustiblesVent Gas SupplyElectrical Supply National Standards and Applicable Codes High Altitude Wall Mounting Major Components 5.1 GeneralShelf Mounting and Suspension 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 Turning Off the Heater Pressure SwitchCheck Gas Rate Complete Start-Up Instruction to the UserUser Instructions User InstructionsHeater Operation Lighting Instructions 11.4.1 To Turn On HeaterTo Turn the Heater Off Simple TroubleshootingSimple Troubleshooting Burner Faults 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 ControlLimit Switches Removal and Replacement Fan Removal and ReplacementTo Replace the Fan Assembly 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.