Roberts Gorden 300, 200, 350, 150, 400, 250, 225, 175 Maximum Vent Lengths Table, Vent Material

Page 21

SECTION 7: VENTING

Maximum Vent Lengths Table

Model UHA[X][S]

# of Elbows

150 - 400

 

40 ft (12.2 m)

1

35 ft (10.7 m)

2

30 ft (9.1 m)

3

25 ft (7.6 m)

4

20 ft (6.1 m)

5

7.7 Vent Material

Vent material may be single wall 26 ga. (minimum) galvanized steel or equal thickness stainless steel. Completely seal all joints, refer to Page 11, Section 7.2.

If penetrating a combustible wall or roof, a listed thimble with 2" (5 cm) clearance must be used. Where local codes permit, a single section of type B-1 vent material may be used at the roof or wall penetration instead of a thimble. Ensure vent manufacturer's clearance from vent material is maintained. Seal annular space of the type B-1 vent as well as all joints in the remaining vent.

7.8 Replacing an Existing Heater in a Venting System

When replacing an existing heater in a venting system, the venting system may not be properly sized to vent the new heater. The following steps must be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in operation.

1.Seal any unused openings in the venting sys- tem.

2.Inspect the venting system for proper size and horizontal pitch, as required by the NFPA 54/ ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada) and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition.

3.Close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building. Turn on clothes dryers and any exhaust fans, such as range hoods and bathroom exhausts so that they shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4.Follow the lighting instructions. Place the appliance being inspected in operation. Adjust

thermostat so that the appliance will operate continuously.

5.For any appliance having a draft hood, test for draft hood appliance spillage at the draft hood relief opening after five minutes of main burner operation. Use the flame of a match or candle.

6.After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliances to their previous conditions of use.

7.If improper venting is observed during any of the above tests, the venting system must be corrected by a contractor qualified in the installation and service of gas-fired equipment or your local gas supplier. If the venting must be resized, use appropriate tables in (US) Appendix G of NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada) to determine minimum size. All vent corrections must be in accordance with the appropriate local codes and the NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and

Propane Installation Code (Canada).

Figure 6: Vent and Roof Detail

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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 Installer Responsibility Wall TagNational 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 RequirementsMaximum Vent Lengths Table Vent MaterialReplacing 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 HeaterPressure Switch Check Gas RateTurning Off the Heater External Controls Complete the Start-UpInstruction 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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