Roberts Gorden CRV-B-4, CRV-B-8, CRV-B-9, CRV-B-6 GAS Piping, Gas Connection with Flexible Gas Hose

Page 47

SECTION 11: GAS PIPING

SECTION 11: GAS PIPING

WARNING

FireFireHazardHazard

TightenTightengasgashosehosefittingsfittingstotoconnectconnectgasgassupplysupply accordingaccordingtotoFigureFigure2524. .

Gas hose can crack when twisted.

Gas hose can crack when twisted.

Gas hose moves during normal operation.

Gas hose moves during normal operation.

Failure to follow these instructions can result in death,

injury or property damage.

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

Install the gas hose as shown in Figure 25. The gas hose accommodates expansion of the heating system and allows for easy installation and service of the burner. Before connecting the burners to the supply system, verify that all high pressure testing of the gas piping has been completed.

There is an expansion of the tube with each firing cycle. This will cause the burner to move with respect to the gas hose. This can cause a gas leak resulting in an unsafe condition if the gas connection is not made in strict accordance with Figure 25.

Meter and service must be large enough to handle all the burners being installed plus any other connected load. The gas hose which feeds the system must be large enough to supply the required gas with a maximum pressure drop of 1/2" w.c. When gas piping is not included in the layout drawing, the local gas supplier will usually help in planning the gas piping.

Do not high pressure test the gas piping with the burner connected. Failure to follow these instructions can result in property damage.

Check the pipe and tubing ends for leaks before placing heating equipment into service. When checking for gas leaks, use a soap and water solution; never use an open flame.

FIGURE 25: Gas Connection with Flexible Gas Hose

Hold gas nipple securely with pipe wrench when attaching the gas hose. Failure to follow these instructions can result in product damage.

 

Shut-Off Valve must be

 

 

3/4" NPT Pipe

parallel to burner gas

 

 

inlet. The 2" (50 mm)

 

 

Shut-Off Valve

 

 

displacement shown is for

 

(Included

 

the cold condition. This

 

 

With Gas Hose)

 

 

displacement may reduce

 

 

 

12" 2" (5 cm) when the system is fired.

45°

(30 cm)

 

 

 

Flexible

 

 

 

Gas

 

 

 

Hose

Burner

Horizontal

Rear View

 

 

 

Description

Part Number

1/2" Flexible Stainless Steel Gas Hose (US Models)

91412200

 

 

3/4" Flexible Stainless Steel Gas Hose (US Models)

91412203

 

 

1/2" Rubber (Type 1) Gas Hose (Canadian Models)

91412206

 

 

3/4" Rubber (Type 1) Gas Hose (Canadian Models)

91412207

 

 

41

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Contents CoRayVac Page Roberts GORDON, LLC Page Table of Figures Page Manpower Requirements Heater SafetyNational Standards and Applicable Codes Installer ResponsibilityWall Tag Corrosive ChemicalsMaintain clearances to combustibles at all times for safety ONE Side Reflector Standard ReflectorUniversal SHIELD, Position Foot Deco Grille National Standards and Applicable Codes With Lock Coupling Assembly Tube AdapterMajor Components Reflector Side Aluminum or Stainless SteelRoberts Gordon Adjustable Indoor SensorRoberts Gordon Ultravac Variable Frequency DriveContents of CRV-Series Burner Carton Standard Parts ListProtective Grille Design Requirements Heater Assembly OverviewCritical Hanger Placement Heater InstallationCoupling and Tube Assembly Tube Installation± 2 5 cm 2 Elbow Installation2 Reflector Installation Reflector Installation 1 Reflector Installation with HoleScrew Wire Form Reflector Support Strap Burner Combustion Chamber Gasket End Vent Burner InstallationReflector Joint 1 Reflector Joint Installation Optional Heater AccessoriesTee Installation 3 Reflector Joint Detail 2 Reflector Joint Installation2 Side Reflector Installation Reflector Side Extension .3.1 Bracket InstallationBarrier Shield See Page 5, through Page 5, for positions2 Frame Shield Installation Decorative Grille Bracket 3 Joint Piece and Reinforcement 2 Decorative Grille4 End Piece and Reflector End Cap 3 Grille Installation Protective Grille Installation 1 Silicone Cap Installation2 Grille End Cap Installation Kg per foot Corayvac Classic Cast-Iron Adapter EP-200 Condensate Valve Assembly Pump Installation and Venting 9.1 Pump InstallationCanadian Requirements Vertical VentingHorizontal Venting United States RequirementsVertical Venting Configuration Horizontal Venting 4 10 cm Pipe EP-100 Horizontal Venting ConfigurationsEP-200 Series Horizontal Venting Configurations EP-300 Series Horizontal Venting Configurations Duct Design Rules Outside AIR SupplyNon-Pressurized PressurizedOutside Air Blower Internal Wiring Diagram Outside Air Blower Internal WiringAir Supply Blower Support Non-Pressurized Outside Air Supply Gas Connection with Flexible Gas Hose GAS PipingDpst Transformer Relay P/N Control MethodsRoberts Gordon System Control Roberts Gordon Ultravactm120 120 Two Zone Operation without Control Panel 60 Hz 12 Vdc 120 Ground 208 230 Burner Internal Wiring Checking the Electrical System Setting the VacuumStarting the System Checking the Gas LineVacuum Reading To Shut Off Heater Operation and MaintenancePre-Season Maintenance and Annual Inspection Sequence of OperationReflector Maintenance ChecklistInstallation Code and Annual Inspections Vehicles and Other ObjectsBlower Scroll, Wheel TubesGas Line WindowPump With the Power offStart ChartYes Follow burner check Procedure given above Troubleshooting FlowDescription Replacement PartsGAS Inlet Pressure General SpecificationsDimensions Pipe ConnectionEP-303 Pump Specifications Model EP-100Air Supply Blower Specifications EP-203Page Limitations on Authority Representatives Warranty is Void ifROBERTS-GORDON will not PAY for Page Owner Warranty Registration Card Page Page F r a r e d H e a t i n g
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CRV-B-4, CRV-B-12, CRV-B-2, CRV-B-10, CRV-B-6 specifications

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