Delta PG PLUS-25 warranty Multiple Units Installation, Mixing Valve Assembly

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Domestic Piping

3.Solder the U-Tube Assembly onto the adapter. (See Fig. 5)

4.Once the adapter has sufficiently cooled, re-insert the check valve assem- bly making sure of orientation and reconnect onto the mixing valve.

If the installation of the PERFORMANCE PLUS requires domestic hot water for a commercial dishwasher, the installer may insert a tee connection between the unit and the mixing valve to provide 140ºF domes- tic hot water. The installer must reference local plumbing codes to ensure if this type of application is permissible.

DANGER

Multiple Units Installation

For applications using multiple units the domestic piping should be piped using a bal- anced manifold arrangement.

The installer should remove the thermostatic mixing valve from the units and install a single thermostatic mixing valve at the outlet of the hot water manifold. The thermostatic mixing valve should be sized according to the required flow rate and pressure drop. Refer to the ther- mostat mixing valve manufacturer specifica- tion and installation instructions for more details.

Reference Fig. 8, page 18 for piping diagram.

Storage Tank Application

The thermostatic mixing valve MUST be installed and utilized on the PERFOR- MANCE PLUS. Removal of the thermo- static mixing valve will result in severe personal injury or death.

CAUTION

The manual valve on the U-Tube assem- bly must remain in the full open position for proper operation of the thermostatic mixing valve.

Domestic Drain Valve

-The installer must install a drain valve and drain leg as shown in Fig. 6 page 17 or Fig. 7 page 18.

-The drain valve should be positioned close to the floor to aid in the siphon action required to drain the inner tank.

For applications requiring large volumes of domestic hot water in a relative short period the installer may include a storage type tank (see Fig. 9 page 19) in the domestic piping. The installer must:

1.Relocate the thermostatic mixing valve from the PERFORMANCE PLUS to the outlet of the storage tank.

2.Provide recirculation from the storage tank back to the PERFORMANCE PLUS using a bronze type circulator. Maximum recommended flow rate is 5 to 10 gpm.

Fig. 5: Mixing Valve Assembly

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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 Do not try to light any appliance What to do if YOU Smell GASHomeowner 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 ClearancesLocating the Combustion Air Inlet Multiple Vent TerminationsVenting Option Non Direct Vent / Vertical Venting Option Direct Vent / Vertical Venting Option Non-Direct Vent / HorizontalVenting Option Direct Vent / Horizontal Horizontal Wall Thimble KitVent Appliance Adapters Excessive Horizontal Vent RunsDetermining Piping Lengths 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 PipingPipe Sizing Natural Gas Natural GASNatural Gas Supply Pressure Requirements Pipe Sizing Propane Gas Propane GASPropane Gas Supply Pressure Requirements 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 Air Shutter Settings Verify Correct Pressure SwitchCheck Thermostat Circuit 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 GeneralCheck the Surrounding Area Section XVI Maintenance ProceduresInspect the Burner 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 SettingsCheck Combustion Levels Check Burner Flame Flame SignalReview With Owner 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