Delta PG PLUS-25 warranty Domestic Piping Section IV Domestic Piping

Page 20

Domestic Piping

 

 

SECTION IV - Domestic Piping

 

 

CAUTION

 

 

 

General Piping Requirements

 

 

The Temperature / Pressure relief valve

• All plumbing must meet or exceed all

is not intended for constant duty, such as

local, state and national plumbing codes.

relief of pressure due to normal thermal

• Use pipe dope or tape suitable for

expansion.

 

 

potable water.

Water Hammer

• Use isolation valves to isolate system

 

 

components.

Water hammer is the effect of sudden pres-

• Install unions for easy removal of the

sure changes occurring in the domestic pip-

ing. These pressure changes are typically

PERFORMANCE PLUS from the sys-

the result of “fast acting” positive shut-off

tem piping.

valves closing. These types of valves can

 

Domestic Supply Pressure

be typically found on dishwashers and

clothes washers.

For applications in which the domestic sup-

The effects of water hammering can cause

ply pressure exceeds 70 psig it is recom-

damage to system components and tank

mended to install a pressure reducing valve

welds on the unit.

on the cold water supply.

Installation of hammer arresters is recom-

Maintaining the cold water supply at or

mended at these types of appliances, which

below 70 psig will prevent normal thermal

incorporate “fast-acting” positive shut-off

expansion from repeatedly forcing the T&P

valves. Consult the manufacturer of water

relief valve open.

hammer arresters for recommendation on

 

sizing and installation requirements.

Thermal Expansion

If the cold water supply contains a backflow preventer, check valve and / or a pressure reducing valve, the installer must install a domestic thermal expansion tank on the cold water supply. (See Fig. 6 page 17)

Installing a thermal expansion tank will prevent normal thermal expansion from repeatedly forcing the T&P relief valve open.

When installing a thermal expansion tank ensure the charge pressure of the tank is equal to the cold water supply pressure at the point of installation. Consult the ther- mal expansion tank manufacturer’s instruc- tions for further information on installation and sizing.

Temperature / Pressure Relief Valve

The PERFORMANCE PLUS has a factory installed Temperature / Pressure Relief valve. Ensure the rating of the T&P relief valve is correctly sized as follows per AGA:

 

 

 

 

 

Model

AGA Rating

 

 

PG PLUS-25

100,000 Btu/hr

 

 

PG PLUS-30

200,000 Btu/hr

 

 

PG PLUS-35

200,000 Btu/hr

 

 

PG PLUS-40

200,000 Btu/hr

 

 

PG PLUS-45

200,000 Btu/hr

 

 

 

 

 

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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 Viii Internal Wiring Section IX External WiringSection VII GAS Piping Section X START-UP PreparationSection XI START-UP Procedures Section XII Temperature LimitsSection Xiii CHECK-OUT Procedures 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 Pre-Installation Items Section I Pre-Installation Items Boiler ReplacementCode Compliance Determining Product LocationPre-Installation Items Residential Garage InstallationsCombustion Air and Venting Section II Combustion Air VentingMethods of Accessing Combustion Air Into a Space Combustion Air and VentingCombustion Air Requirements 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 Hydrostatic Test Procedures Unit Preparation Section III Unit PreparationHandling Instructions 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 Primary Piping Closet Zero Clearance ApplicationsSystem Piping Zone Circulators 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 External Wiring Section IX External Wiring Installation ComplianceOutdoor Temperature Limit 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 Start-Up Procedures Final Checks Before Start-upPerformance Plus Start-up If Performance Plus Does Not Start CorrectlyFor Your Safety Read Before Lighting Following instructions must be followed exactly, a fire orOr loss of life Operating InstructionsNatural Gas Propane Temperature Limits Section XII Temperature Limits Recommended Secondary Thermostat SettingTemperature Limits Section XIII- Check-Out Procedures Section XIV Installation Record Section XV Maintenance Schedule Service TechnicianOwner Maintenance GeneralInspect the Burner Area Section XVI Maintenance ProceduresCheck the Surrounding Area Check Combustion/ Ventilation Air Openings Inspect Vent System and Combustion Air PipingCheck Domestic System Check Expansion TankCheck Temperature / Pressure Relief Valve Check Ignition Wiring and Ground WiringCheck Control 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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