PB Heat 211A manual Install GAS Supply Piping, Test GAS Supply Piping

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CONNECT GAS PIPING

c.When piping bleed lines to outside, terminate the tubing downward to prevent water from entering the tubing, and protect the tubing termination from any obstruction. Terminate the tubing above and well away from normal breathing level or building air intakes.

D.INSTALL GAS SUPPLY PIPING

1.Size the piping as required by the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CGA B149 Installation Codes or as required by local codes.

a.Use Table 7.1 for sizing of natural gas for a system pressure drop of 0.3 inch water column (75 Pa).

Figure 7.2: Gas Supply Connection to Boiler

2.The standard gas train is designed for a maximum pressure of 1/2 psig (14 inches water column/3.5 kPa). Make sure the system regulator will not allow a higher pressure to the Gas Control Train under any conditions.

3.The minimum gas supply pressure is listed on the Boiler Rating Label. Make sure the system regulator and the piping are sized and adjusted properly to provide this pressure under all conditions.

4.Install a Service Valve, Sediment Trap and Ground Joint Union at the supply connection to the Gas Control Train as shown in Figure 7.2. These are not supplied with the boiler. Install them in accordance with local codes.

5.Use only pipe joint compounds rated for use with Liquefied Petroleum Gases. This is necessary because most natural gas contains propane as well as methane.

E.TEST GAS SUPPLY PIPING

1.ISOLATE THE BOILER GAS CONTROL TRAIN FROM THE SYSTEM DURING TEST:

a.Test pressure 1/2 psig (3.5 kPa) or less – Close the Manual Shut-Off Valve on the Boiler Gas Control Train

b.Test pressure over 1/2 psig (3.5 kPa) – Disconnect the gas supply piping upstream of the Boiler Manual Shut-Off Valve

WARNING

Do not expose the Gas Control Train to excessive pressure. The gas valves can be damaged. This could result in explosion hazard and severe personal injury or death.

Do not test gas supply piping with open flame. Use a soap suds mixture brushed onto the pipe joints to test for leaks.

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Contents Series 211A Table of Contents Using this Manual Follow the Piping GuidelinesControls Special Attention BoxesPreinstallation Accessibility ClearancesCombustible Construction Clearances AIR for Combustion and Ventilation21 ft Required Volume other =Required Volume fan = 15 ft Btu/hr 22 cm 2 per 2000 W of total rated Input for all appliances in the space. SeeChimney or Vent WhereMechanical Combustion Air Supply Combustion Air DuctsCombined vent breeching Exterior VentsVent Sizing Water Quality and MAKE-UP Boiler SettingInstallation Survey Boiler Foundation Layout Crate Items Base AssemblyAssemble the Base Install the Pilot Burners For 211A-04 through 211A-08 OnlyBase Front and Back Panel Crates Model Overall LengthTypical Gas Manifold and Pilot Line Assembly Burners Total Natural Gas Only Propane Gas Only Model NumberPilots Placing the Sections Place the Boiler SectionsPreparation Assembling Sections on Base Hydrostatic Test the Boiler Align Sections VerticallyInstall the Flue Collector Do not tighten yetBoiler Position Return Piping Pipe the BoilerSupply Piping Pipe the Boiler Multiple Boiler Installations Boiler Header End RisersEqualizers Model SizePiping Multiple Boilers, Typical, Gravity Return Systems Install the Jacket & Draft Hood Apply Cleanout Cover PlatesPrepare the Parts Apply Jacket END AssembliesApply Plates and Labels Apply Lower END PanelsApply Jacket TOP Panels Top Panel GG-6024 Carton Contents Sub-Assembly Part Number Quantity Jacket Assembly Sequence Carton Numbers and Locations 13C Install GAS Train Install Vent and Bleed PipingConnect GAS Piping Connect Pilot GAS TubingInstall GAS Supply Piping Test GAS Supply PipingPipe Length 4 Pipe 2 Pipe Specific Gravity Multiply Capacity byInstall Controls and Trim Install Safety Valves Install LOW Water CUT-OFFSInstall Blowdown Valves Install Pressure ControlsPressure Control Piping Fittings Included with Boiler Standard Float Type COntrol, Model 67PE2 Optional Float Type Pump Control/Low Water Cut-Off, Model Application of 51 Feeders Wire the Boiler Connect Supply WiringInstall Control Wiring Prepare Remaining ControlsTypical Wiring Standard Controls Low Voltage Gas Valves Typical Wiring Standard Controls 120-Volt Gas Valves Starting the Boiler Meter reading. Rate, Btu/Hr = F x H x Clean the BoilerCheck Boiler Controls Pilot Flame Failure Lighting Instructions TypicalTo Light the Boiler To Shut Down the Boiler Operation & Maintenance Placing Boiler in Operation Pilot and Burner FlamesMonthly Maintenance Annual MaintenanceWeekly Maintenance Daily MaintenanceTroubleshooting Service Tips Problem Possible Cause Suggested RemedyCorrect Piping Boiler Ratings & Dimensions Boiler Rating InformationBoiler Ratings & Dimensions Chart continues on Series 211A Steam Boiler DimensionsSeries 211A Steam Boiler Dimensions Repair Parts Series 211A Description Part Selection Information Stock CodeBase Front Panel Cover Plate 26 660 mm Wide Base Panel Boiler Assembly Base Assembly Page Series 211A