Roberts Gorden 300, 200 Wiring, Low Voltage Thermostat with One Heater, Positioning Thermostats

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SECTION 10: WIRING

SECTION 10: WIRING

DANGER

Electrical Shock Hazard

Disconnect electric before service.

More than one disconnect switch may be required to disconnect electric from equipment.

Equipment must be properly grounded.

Failure to follow these instructions can result in death or electrical shock.

All heater models require constant 120 V / 1Ø / 60 Hz power supply. Check heater rating plate for electrical rating for proper circuit sizing. For servicing, a disconnect switch of proper electrical rating should be installed in the vicinity of the heater. All heaters are equipped with thermostat connections suitable to power a 24 V thermostat.

10.2 Low Voltage Thermostat with One Heater

Heater must be wired and electrically grounded in accordance with local codes. In the absence of local codes in accordance with: United States: refer to National Electrical Code® NFPA 70 - latest revision Canada: refer to Canadian Electrical Code CSA C22.1 Part I - latest revision.

10.1 Positioning Thermostats

Aroom thermostat should be mounted on a vibration-free wall or column at a height of approximately 5' (1.5 m) from the floor to measure the ambient temperature. It should be clear of both cold drafts and the direct path of warm air from the heater.

Avoid mounting thermostat on outside walls or in areas directly exposed to radiant heat or sunlight. Install wall tag in a visible location near thermostat. See Page 5, Section 2.1 for wall tag details.

10.1.1 Fan Control

The heater’s axial fan can be used during the off- season for air circulation. A low voltage programmable thermostat with fan switch (P/N 90425400) must be used. See Page 21, Section

10.2for thermostat connection details. For the use of multiple heaters on one thermostat, See Page 22, Section 10.3 through Page 23, Section 10.4.

24 Volt

 

Thermostat

 

Heating Only

Terminal

 

Strip

R

W

R

G

W

C

Electrical

Gas Supply

Supply

 

 

 

24Volt Thermostat with Fan Control

Terminal

R

Strip

 

G

 

 

R

 

G

W

W

 

C

C

 

Electrical

Gas Supply

Supply

 

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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 National Standards and Applicable Codes Installer ResponsibilityWall Tag 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 RequirementsReplacing an Existing Heater in a Venting System Maximum Vent Lengths TableVent Material 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 HeaterTurning Off the Heater Pressure SwitchCheck Gas Rate Instruction to the User External ControlsComplete the Start-Up 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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