Roberts Gorden 200, 350, 150, 400, 250, 300, 225, 175 service manual Servicing

Page 40

UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 13: SERVICING

DANGER

 

WARNING

 

Electrical Shock Hazard

Explosion Hazard

Burn Hazard

Cut/Pinch Hazard

Disconnect electric

Turn off gas supply to

Allow heater to cool

Wear protective gear

heater before service.

before service.

during installation,

before service.

 

 

operation and service.

Heater must be

 

Tubing may still be hot

 

 

connected to a properly

 

after operation.

Edges are sharp.

grounded electrical

 

 

 

source.

 

 

 

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

13.1 Servicing Instructions

After start-up, the heater will require maintenance to be carried out, at a minimum, annually. If the heater is used in a dirty or dusty area, more frequent maintenance may be required.

IMPORTANT: After any maintenance or repair work, always test fire the heater in accordance with the start-up instructions on Page 27, Section 11 through Page 30, Section 11.3.1 to ensure all safety systems are in working order before leaving the heater to operate. Minor faults may be traced by using the troubleshooting charts on Page 35, Section 14 through Page 39, Section 14.5.

IMPORTANT: Check all gas pipes and pipe joints to ensure there are no cracks or gas leaks. Any cracks in the pipes or pipe joints must be repaired.

IMPORTANT: Inspect all suspended components and hardware. Ensure that they are in good condition, properly tightened, and corrosion free.

13.2 Burner Maintenance

1.Open the door and remove the burner compart- ment cover. See Page 41, Section 15.2.

2.Clean any deposits from the main burner which may have formed in the injectors or venturi of the burner. See Page 41, Section 15.2.

3.Remove the ignition electrode and flame probe. Check condition of ignition electrode and flame probe. Clean off any deposits which may have been formed, check condition of ceramic

insulators. Replace as necessary. See Page 42, Section 15.3.

13.3 Fan/Motor Assembly Maintenance

The main fan bearings are permanently sealed and do not need lubrication. Before cleaning, turn off gas and electrical supply. Remove the fan and use a small brush or duster to clean the fan blades from each side. Replace fan when done.

13.4 Heat Exchanger Maintenance

The heat exchanger will remain clean unless a problem has developed with combustion. Inspect the heat exchanger. Look for signs of overheating at the front tubes which may indicate burner over firing or persistently low air flows.

13.5 Gas Valve Maintenance

No regular maintenance is required on this device. To change gas control valves, See Page 40, Section 15.1.

Do not repair or disassemble gas valve.

Replace faulty gas valves with genuine replacement parts sold and supplied by Roberts-Gordon LLC.

13.6 Flue Blower

The flue blower should not require maintenance. However, if the air pressure switch is causing burner lockout, then remove the flue blower from the vent box by unscrewing the three screws at the mounting plate. Remove the four screws attaching the mounting plate to the fan inlet (See Page 44, Section 15.6). Ensure that the fan is free to run and that the fan wheel is clean.

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Contents Combat Page Gamme standard Page Roberts-Gordon LLC Page Table of Figures Page Heater Safety Manpower RequirementsSafety Labels and Their Placement California PropositionUHAXS150 175 Label Placement UHAXS200 250 Label Placement UHAXS300 400 Label Placement Wall Tag Installer ResponsibilityNational Standards and Applicable Codes Minimum Required Installation Clearances Critical Considerations 3.1 Basic InformationManufactured Units VentilationInstallation Clearances and Clearances to Combustibles Clearances To CombustiblesNational Standards and Applicable Codes High Altitude Heater Installation 6.1 General Suspension MethodsVent Installation VentingUnited States Requirements Canadian RequirementsStandard Vented Heaters Models Uhax 150 Horizontal VentingVertical Venting Length RequirementsVent Material Maximum Vent Lengths TableReplacing an Existing Heater in a Venting System Model Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box Vertical Unvented Installation AIR SupplyBuilding Ventilation Outside Combustion Air SupplyGAS Piping ConnectionsDo not bend flexible gas connector Wiring Low Voltage Thermostat with One HeaterPositioning Thermostats Fan ControlLow Voltage Thermostat with Multiple Heaters Models UHAXS150 Low Voltage Thermostat with Multiple Heaters Models UHAXS300 Uhaxs Series Internal Wiring Diagram TransformerUhaxs Series Ladder Wiring Diagram FlameElectrical Connection to the Heater Operation and Maintenance Electrical ChecksLouvers Mechanical ChecksBegin Start-Up Before Operating the Heater Automatic Burner Control SequenceCheck Gas Rate Pressure SwitchTurning Off the Heater Complete the Start-Up External ControlsInstruction to the User User Instructions Servicing Maintenance Checklist Venting and Air Intake PipeAnnual Fall Start-Up Vicinity of the HeaterWhen installed Wall Tag Heat ExchangerGas Line and Shut-off Valves Burner ObservationTroubleshooting General Troubleshooting For Automatic Ignition Burner Systems Conduct start-up procedure as shown on Page 27, SectionTroubleshooting for Flame Supervision System StartTroubleshooting for Gas Valves Troubleshooting for Flue BlowerReplacement Parts Burner ComponentsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Louvers and Louver Spring Horizontal Louvers LouversUhaxs Axial Fan/Guard/Motor Assembly Ignition ControlTo Replace the Fan Assembly Specifications 16.1 Dimension Data General Technical Data Table Technical Data TableWarranty is Void if ROBERTS-GORDON LLC will PAY forROBERTS-GORDON LLC will not PAY for Limitations on Authority RepresentativesPage Owner Warranty Registration Card Mail or Fax toPage
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175, 225, 300, 250, 400 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.

At the core of Roberts Gorden products is their radiant heating technology. Unlike conventional heating systems that warm the air, radiant heaters emit infrared radiation, which directly heats objects and people within a space. This method not only provides a comfortable environment but also reduces energy consumption and minimizes the loss of heat, making it an environmentally friendly choice.

The Roberts Gorden 250 model is specifically designed for smaller spaces, offering compact efficiency without sacrificing power. It features an adjustable output, allowing for tailored heating based on specific requirements. The advanced burner technology ensures optimum combustion efficiency, translating to cost savings on fuel consumption.

Moving on to the Roberts Gorden 300, this unit is well-suited for medium-sized facilities. With enhanced capabilities, the 300 model offers improved heating distribution, making it ideal for warehouses and production floors. The ease of installation and maintenance further enhances its appeal, allowing businesses to focus on their operations rather than on complicated heating systems.

The Roberts Gorden 400 is a powerhouse in the lineup, engineered for larger spaces that demand high-performance heating. Its robust construction and powerful output provide effective warmth even in challenging environments. The unit is equipped with sophisticated controls that promote energy efficiency while maintaining optimum comfort levels.

In the mid-range spectrum, the Roberts Gorden 150 and 225 models cater to businesses needing versatile heating solutions. Both models are designed with user-friendly interfaces and include safety features that comply with industry standards. Their lightweight design allows for easy installation and mobility, making them suitable for temporary or permanent heating applications.

Overall, Roberts Gorden's commitment to innovation and efficiency is evident across its product range. With a focus on sustainability and advanced heating technologies, the Roberts Gorden 250, 300, 400, 150, and 225 models provide reliable heating solutions that meet the diverse preferences of industrial and commercial users. These products are not just about warmth; they are about creating a comfortable and productive environment while minimizing energy costs and environmental impact.
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