Roberts Gorden 300, 200, 350, 150, 400, 250 Check Gas Rate, Pressure Switch, Turning Off the Heater

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SECTION 11: OPERATION AND MAINTENANCE

Figure 14: Gas Valve for Models UHA[X][S] 150 - 400

END VIEW

TOP VIEW

 

 

Regulator

 

 

½PSI

 

 

C

 

 

IN

 

 

 

ON

Gas Inlet

OFF

Outlet

 

 

Pressure

 

 

 

Description

Part Number

 

Gas Valve 150 - 250 NG

90032505

 

Gas Valve 150 - 250 LP

90032506

 

Gas Valve 300 - 400 NG

90032520

Inlet Pressure

Gas Valve 300 - 400 LP

90032521

11.2.2Start-Up the Gas Valve (All Gases) 11.2.2.1 Check Burner Gas Pressure

1. Remove the plug in the outlet (burner) pressure test point and connect a pressure tap and a manometer.

2.With the burner firing, measure the pressure on the manometer. To adjust the burner pressure, remove the regulator cover from the valve and turn the regulator adjustment screw to set the required burner pressure as stated in the Technical Data Table for the correct gas and model on Page 49, Section 16.3.

NOTE: If the correct burner pressure cannot be reached, then check the inlet pressure to the valve with the burner firing. See Technical Data Table on Page 49, Section 16.3 for inlet pressure requirement.

Do not continue to adjust the regulator if the pressure is not changing.

If the inlet pressure is too low to allow correct burner pressure setting, then the gas inlet pressure must be corrected before completing the start-up.

Check Gas Rate

1.After burner pressure adjustment, allow the heater to operate for at least 15 minutes and then re-check settings. Adjust pressure setting if necessary.

2.Check gas flow rate at gas meter.

3.Turn off heater and electrical supply.

4.Remove the manometer and refit all covers to the valve and tighten the screw of the outlet pressure tap.

11.2.3 Pressure Switch

The pressure switch is factory pre-set for each model and is not adjustable.

11.2.4 Turning Off the Heater

Set the thermostat to the "OFF" position or lowest setting and the main burner will stop.

The fan will continue to run until it is stopped automatically by the fan thermostat.

Do not use a disconnect switch for control of heater. Disconnect switch will turn off the fan. Heat exchanger could be damaged. Warranty will not cover damage to the heat exchanger if operated improperly. Only use the disconnect switch for turning off heater for service or during off-season.

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Contents Combat Page Gamme standard Page Roberts-Gordon LLC Page Table of Figures Page Manpower Requirements Heater SafetySafety 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 Critical Considerations 3.1 Basic Information Minimum Required Installation ClearancesManufactured Units VentilationClearances To Combustibles Installation Clearances and Clearances to CombustiblesNational Standards and Applicable Codes High Altitude Suspension Methods Heater Installation 6.1 GeneralVenting Vent InstallationUnited States Requirements Canadian RequirementsHorizontal Venting Standard Vented Heaters Models Uhax 150Vertical 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 AIR Supply Unvented InstallationBuilding Ventilation Outside Combustion Air SupplyConnections GAS PipingDo not bend flexible gas connector Low Voltage Thermostat with One Heater WiringPositioning Thermostats Fan ControlLow 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 Electrical Checks Operation and MaintenanceLouvers Mechanical ChecksAutomatic Burner Control Sequence Begin Start-Up Before Operating the HeaterCheck Gas Rate Pressure SwitchTurning Off the Heater Complete the Start-Up External ControlsInstruction to the User User Instructions Servicing Venting and Air Intake Pipe Maintenance ChecklistAnnual Fall Start-Up Vicinity of the HeaterHeat Exchanger When installed Wall TagGas Line and Shut-off Valves Burner ObservationTroubleshooting 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 TableROBERTS-GORDON LLC will PAY for Warranty is Void ifROBERTS-GORDON LLC will not PAY for Limitations on Authority RepresentativesPage 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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