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

Page 39

SECTION 12: USER INSTRUCTIONS

SECTION 12: USER INSTRUCTIONS

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.

The UHA[X][S] Series heaters are fully automatic and operate from the external controls fitted on site.

12.1 Heater Operation

When the heater has been switched on by the thermostat installed on site, the main burner will automatically turn on.

The burner control box will control the safe ignition of the flame.

All heaters require a constant gas and electricity supply which must not be interrupted during the normal operation of this heater.

12.2Lighting Instructions 12.2.1 To Turn On Heater

1. Ensure that the electrical and gas supplies to the heater are on. Check that the on site controls are "ON".

IMPORTANT: The thermostat setting must be above the ambient temperature for the heater to operate.

2. The automatic firing sequence will begin as described on Page 28, Figure 13. The heater will now operate automatically under the control of the on site controls.

12.2.2 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.

12.3 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.

12.3.1 Simple Troubleshooting (Burner Fault)

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 31, Figure 15 for LED indication codes.

Figure 15: 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 Switch Open

 

 

5 Flashes

Flame Sense Error - Gas valve not energized.

 

 

Steady On

Internal Control Failure

 

 

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Contents Combat Page Gamme standard Page Roberts-Gordon LLC Page Table of Figures Page California Proposition Heater SafetyManpower Requirements Safety Labels and Their PlacementUHAXS150 175 Label Placement UHAXS200 250 Label Placement UHAXS300 400 Label Placement Installer Responsibility Wall TagNational Standards and Applicable Codes Ventilation Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information Manufactured UnitsClearances To Combustibles Installation Clearances and Clearances to CombustiblesNational Standards and Applicable Codes High Altitude Suspension Methods Heater Installation 6.1 GeneralCanadian Requirements Vent InstallationVenting United States RequirementsLength Requirements Standard Vented Heaters Models Uhax 150Horizontal Venting Vertical VentingMaximum Vent Lengths Table Vent MaterialReplacing an Existing Heater in a Venting System Model Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box Vertical Outside Combustion Air Supply Unvented InstallationAIR Supply Building VentilationConnections GAS PipingDo not bend flexible gas connector Fan Control WiringLow Voltage Thermostat with One Heater Positioning ThermostatsLow Voltage Thermostat with Multiple Heaters Models UHAXS150 Low Voltage Thermostat with Multiple Heaters Models UHAXS300 Transformer Uhaxs Series Internal Wiring DiagramFlame Uhaxs Series Ladder Wiring DiagramElectrical Connection to the Heater Mechanical Checks Operation and MaintenanceElectrical Checks LouversAutomatic Burner Control Sequence Begin Start-Up Before Operating the HeaterPressure Switch Check Gas RateTurning Off the Heater External Controls Complete the Start-UpInstruction to the User User Instructions Servicing Vicinity of the Heater Maintenance ChecklistVenting and Air Intake Pipe Annual Fall Start-UpValves Burner Observation When installed Wall TagHeat Exchanger Gas Line and Shut-offTroubleshooting General Conduct start-up procedure as shown on Page 27, Section Troubleshooting For Automatic Ignition Burner SystemsStart Troubleshooting for Flame Supervision SystemTroubleshooting for Flue Blower Troubleshooting for Gas ValvesBurner Components Replacement PartsBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Horizontal Louvers Louvers Louvers and Louver SpringUhaxs Ignition Control Axial Fan/Guard/Motor AssemblyTo Replace the Fan Assembly Specifications 16.1 Dimension Data Technical Data Table General Technical Data TableLimitations on Authority Representatives Warranty is Void ifROBERTS-GORDON LLC will PAY for ROBERTS-GORDON LLC will not PAY forPage Mail or Fax to Owner Warranty Registration CardPage
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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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