Delta PG PLUS-25 warranty Check Boiler Relief Valve, Check Temperature / Pressure Relief Valve

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Maintenance Procedures

Check Boiler Relief Valve

Inspect the relief valve and lift the lever to verify flow at least annually or as recom- mended on the warning tag of the valve.

WARNING

Before manually operating the pressure relief valve ensure the discharge piping is directed to a suitable place of disposal to avoid a potential scald hazard. The dis- charge piping must be full size without restriction and installed to permit com- plete drainage of both the valve and line.

If after closing the valve, the valve fails to seat properly or continually weeps, replace the relief valve. Ensure the cause of the relief valve to weep is the valve itself, not due to system over-pressurization caused by an expansion tank that is waterlogged or undersized.

Check Temperature / Pressure Relief Valve

Inspect the T&P relief valve and lift the lever to verify flow at least annually or as recommended on the warning tag of the valve.

WARNING

Before manually operating the pressure relief valve ensure the discharge piping is directed to a suitable place of disposal to avoid a potential scald hazard. The dis- charge piping must be full size without restriction and installed to permit com- plete drainage of both the valve and line.

If after closing the valve, the valve fails to seat properly or continually weeps, replace the relief valve. Ensure the cause of the weeping is the valve itself, not due to ther- mal expansion or a faulty or under-pressur- ized thermal expansion tank.

Inspection of Ignition Electrode

Remove the ignition electrode from the burner mounting plate.

Remove any white oxides accumulated on the electrode using fine grit sandpaper or steel wool. If the electrode does not clean to a satisfactory condition, replace the ignitor.

When replacing the ignition electrode, ensure the gasket is in good condition and correctly positioned.

Check Ignition Wiring and Ground Wiring

Inspect the burner wiring from the burner control module to the ground terminal behind the control panel.

Ensure wiring is in good condition and securely connected.

Check ground continuity of the wiring using a continuity meter.

Replace and correct ground wire if ground continuity is not completed and satisfactory.

Check Control Wiring

Inspect all control wiring located behind the control panel and at the burner control module. Ensure wiring is in good condi- tion and properly connected.

Check Thermostat Limit Settings

Check the position of the Secondary and Primary Thermostat knobs, refer to Figure 38 and 39 page 54 for recommended settings.

Perform Start-up and Checkout Procedures

Start the unit and perform the start-up pro- cedure as listed in this manual.

Verify the cold water fill pressure is correct and the operating pressure of the primary system is within normal operating range.

Complete the checkout procedures as refer- enced in this manual.

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Contents PG PLUS-25/30/35/40 Gas Fired Combination Heaters For Your SafetyTable of Contents Section V Primary Piping Section VI Vent / Combustion AIR InstallationSection X START-UP Preparation Section Viii Internal WiringSection IX External Wiring Section VII GAS PipingSection XIV Installation Record Section XI START-UP ProceduresSection XII Temperature Limits Section Xiii CHECK-OUT ProceduresProduct Specifications Section Xvii Replacement PartsProduct & 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 Determining Product Location Pre-Installation Items Section I Pre-Installation ItemsBoiler Replacement Code ComplianceResidential Garage Installations Pre-Installation ItemsVenting Combustion Air and Venting Section II Combustion AirAir Openings Methods of Accessing Combustion Air Into a SpaceCombustion Air and Venting Combustion Air RequirementsEquipment Located in Confined Spaces One Permanent Air Inlet Outdoor Combustion AirVent System Combination of Indoor and Outdoor Combustion AirRemoval of an Existing Boiler f rom a Common Vent System Hydrostatic Pressure Test Hydrostatic Test ProceduresUnit Preparation Section III Unit Preparation Handling InstructionsCompletion of Hydrostatic Test and Draining Unit PreparationDomestic Piping Section IV Domestic Piping Domestic Piping Mixing Valve Assembly Multiple Units InstallationTR/SMART Series Application Domestic Piping DiagramsPerformance Plus With Recirculation Performance Plus with Storage Tank Primary Piping Section V Primary Piping Sizing Primary Piping Primary PipingCloset Zero Clearance Applications System Piping Zone CirculatorsPersonal injury, death or substantial property damage System Piping Radiant Heating with Mixing ValvePrimary Piping Near Appliance Piping Primary piping Zoning with Circulators Primary Piping Low Temperature Radiant System Primary Piping General Requirements Venting and Combustion Air Installation Section VI VentingCategory IV Vent Termination Clearances Venting and Combustion Air InstallationLocating the Combustion Air Inlet Multiple Vent TerminationsVenting Option Non Direct Vent / Vertical Venting Option Non-Direct Vent / Horizontal Venting Option Direct Vent / VerticalHorizontal Wall Thimble Kit Venting Option Direct Vent / HorizontalVent 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 Recommended Gas Supply Piping Section VII Gas PipingPipe Sizing Natural Gas Natural GASNatural Gas Supply Pressure Requirements Pipe Sizing Propane Gas Propane GASPropane Gas Supply Pressure Requirements Wiring must be N.E.C Class Internal Wiring Section Viii Internal WiringFactory Wiring Schematic Internal WiringFactory Internal Wiring Line Voltage Connections External Wiring Section IX External WiringInstallation Compliance Outdoor Temperature LimitMultiple Zone Field Wiring Using Zone Valves External WiringField wiring with zone circulators Typical Zone Relay Panel Wiring Performance Plus Section X Start Up PreparationFilling the Outer Primary Tank and System Check Low Water Cut-Off Device Air Shutter Settings Verify Correct Pressure SwitchCheck Thermostat Circuit If Performance Plus Does Not Start Correctly Start-Up ProceduresFinal Checks Before Start-up Performance Plus Start-upOperating Instructions For Your Safety Read Before LightingFollowing instructions must be followed exactly, a fire or Or loss of lifeNatural Gas Propane Recommended Secondary Thermostat Setting Temperature Limits Section XII Temperature LimitsTemperature Limits Section XIII- Check-Out Procedures Section XIV Installation Record General Section XV Maintenance ScheduleService Technician Owner MaintenanceCheck the Surrounding Area Section XVI Maintenance ProceduresInspect the Burner Area Check Expansion Tank Check Combustion/ Ventilation Air OpeningsInspect Vent System and Combustion Air Piping Check Domestic SystemCheck Thermostat Limit Settings Check Temperature / Pressure Relief ValveCheck Ignition Wiring and Ground Wiring Check Control WiringCheck 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 Maxi-flo Pool and Spa Heat Exchangers TTP Brazed Plate Heat Exchangers
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