Delta PG PLUS-25 warranty Primary Piping Section V Primary Piping

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Primary Piping

 

 

SECTION V - Primary Piping

 

 

NOTICE

 

 

 

General Piping Requirements

 

potential outer tank failures the

To prevent

Low Water Cutoff Device

primary system piping must be a “closed”

loop system to avoid any oxygen contami-

- The PERFORMANCE PLUS is equipped

nation of the boiler water.

with a factory installed pressure switch

 

 

style Low Water Cut Off device.

Expansion Tank and Makeup Water

- The minimum operating system pressure

Ensure the expansion tank is properly sized

allowable with this device is 10 psig.

for the outer tank volume (20 gallons) and

- Check local codes which require a low

the system volume and temperature.

water cutoff device for compliance of

 

 

this device.

 

 

Backflow Preventer

-Use a backflow preventer valve in the make-up water supply to the unit as required by local codes.

Primary System Piping Applications

BEST PRACTICE

All piping applications shown in this instal- lation manual utilize a primary/ secondary piping arrangement. This method is rec- ommended as a means to provide priority to the production of domestic hot water. For other piping arrangements, consult the Engineering Department at Triangle Tube or consult other approved/recognized design arrangements.

BEST PRACTICE

On piping applications utilizing a single zone or other recognized piping design arrangements it is recommended the installer uses flow/check valves with weighted seats at or near the appliance to prevent gravity circulation.

CAUTION

Undersized expansion tanks will cause sys- tem water to be lost through the pressure relief valve and cause additional makeup water to be added to the system. Eventual primary tank failure can result due to this excessive makeup water addition.

The expansion tank must be located as shown in Figure 11, 11A or 11B page 23 or as per recognized design methods. Refer to the expansion tank manufacturer instruc- tions for additional installation details.

Connect the expansion tank to an air sepa- rator only if the air separator is located on the suction side (inlet) of the system circu- lator. Always locate and install the system fill connection at the same location as the expansion tank connection to the system.

Diaphragm (Bladder) Expansion Tank

Always install an automatic air vent on the top of the air separator to remove residual air from the system.

Closed-Type (Standard) Expansion Tank

It is recommended to pitch any horizontal piping toward the expansion tank 1 inch per 5 feet of piping. Use 3/4” piping for the expansion tank to allow air within the sys- tem to rise.

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Contents For Your Safety PG PLUS-25/30/35/40 Gas Fired Combination HeatersTable of Contents Section VI Vent / Combustion AIR Installation Section V Primary PipingSection VII GAS Piping Section Viii Internal WiringSection IX External Wiring Section X START-UP PreparationSection Xiii CHECK-OUT Procedures Section XI START-UP ProceduresSection XII Temperature Limits Section XIV Installation RecordSection Xvii Replacement Parts Product SpecificationsProduct & Safety Information To Protect Against Excessive Temperature and Pressure Homeowner What to do if YOU Smell GASDo not try to light any appliance Operating Restrictions Code Compliance Pre-Installation Items Section I Pre-Installation ItemsBoiler Replacement Determining Product LocationPre-Installation Items Residential Garage InstallationsCombustion Air and Venting Section II Combustion Air VentingCombustion Air Requirements Methods of Accessing Combustion Air Into a SpaceCombustion Air and Venting Air OpeningsOutdoor Combustion Air Equipment Located in Confined Spaces One Permanent Air InletCombination of Indoor and Outdoor Combustion Air Vent SystemRemoval of an Existing Boiler f rom a Common Vent System Handling Instructions Hydrostatic Test ProceduresUnit Preparation Section III Unit Preparation Hydrostatic Pressure TestUnit Preparation Completion of Hydrostatic Test and DrainingDomestic Piping Section IV Domestic Piping Domestic Piping Multiple Units Installation Mixing Valve AssemblyDomestic Piping Diagrams TR/SMART Series ApplicationPerformance Plus With Recirculation Performance Plus with Storage Tank Primary Piping Section V Primary Piping System Piping Zone Circulators Primary PipingCloset Zero Clearance Applications Sizing Primary PipingSystem Piping Radiant Heating with Mixing Valve Personal injury, death or substantial property damagePrimary Piping Near Appliance Piping Primary piping Zoning with Circulators Primary Piping Low Temperature Radiant System Primary Piping Venting and Combustion Air Installation Section VI Venting General RequirementsVenting and Combustion Air Installation Category IV Vent Termination ClearancesVenting Option Non Direct Vent / Vertical Multiple Vent TerminationsLocating the Combustion Air Inlet Venting Option Direct Vent / Vertical Venting Option Non-Direct Vent / HorizontalVenting Option Direct Vent / Horizontal Horizontal Wall Thimble KitDetermining Piping Lengths Excessive Horizontal Vent RunsVent Appliance Adapters Allowable Equivalent Length Combined Vent and Combustion Air Standard Horizontal Venting Installation Location of Air Inlet Termination Venting and Combustion Air Installation Section VII Gas Piping Recommended Gas Supply PipingNatural Gas Supply Pressure Requirements Natural GASPipe Sizing Natural Gas Propane Gas Supply Pressure Requirements Propane GASPipe Sizing Propane Gas Internal Wiring Section Viii Internal Wiring Wiring must be N.E.C ClassInternal Wiring Factory Wiring SchematicFactory Internal Wiring Outdoor Temperature Limit External Wiring Section IX External WiringInstallation Compliance Line Voltage ConnectionsExternal Wiring Multiple Zone Field Wiring Using Zone ValvesField wiring with zone circulators Typical Zone Relay Panel Wiring Section X Start Up Preparation Performance PlusFilling the Outer Primary Tank and System Check Low Water Cut-Off Device Check Thermostat Circuit Verify Correct Pressure SwitchAir Shutter Settings Performance Plus Start-up Start-Up ProceduresFinal Checks Before Start-up If Performance Plus Does Not Start CorrectlyOr loss of life For Your Safety Read Before LightingFollowing instructions must be followed exactly, a fire or Operating InstructionsNatural Gas Propane Temperature Limits Section XII Temperature Limits Recommended Secondary Thermostat SettingTemperature Limits Section XIII- Check-Out Procedures Section XIV Installation Record Owner Maintenance Section XV Maintenance ScheduleService Technician GeneralInspect the Burner Area Section XVI Maintenance ProceduresCheck the Surrounding Area Check Domestic System Check Combustion/ Ventilation Air OpeningsInspect Vent System and Combustion Air Piping Check Expansion TankCheck Control Wiring Check Temperature / Pressure Relief ValveCheck Ignition Wiring and Ground Wiring Check Thermostat Limit SettingsReview With Owner Check Burner Flame Flame SignalCheck Combustion Levels Section Xvii Replacement Parts Jacket Components Control Panel Components Electrical Panel Components Burner Components Specifications Graph 1 Performance Plus Pressure Loss Primary Side TTP Brazed Plate Heat Exchangers Maxi-flo Pool and Spa Heat Exchangers
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