Primary Piping Low Temperature Radiant System | Delta PG PLUS-25

Primary Piping

Note: Adjust system temperature valve to establish maximum sup- ply/return temperature differen- tial of 30ºF and a minimum 130ºF return water temperature to the PERFORMANCE PLUS

Fig. 14: Primary Piping - Low Temperature Radiant System

Fig. 15: Primary Piping - Multi Temperature System

1.	Circulator	5.	Purge valve
2.	Shut Off valves	6.	System circulator
3.	Flow check valve	7.	3-way mixing valve
4.	Zone valve	8.	System Temperature valve (See note above)

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Image 31

Delta PG PLUS-25 warranty Primary Piping Low Temperature Radiant System

Contents

PG PLUS-25/30/35/40 Gas Fired Combination Heaters For Your Safety Table of Contents Section V Primary Piping Section VI Vent / Combustion AIR Installation Section X START-UP Preparation Section Viii Internal WiringSection IX External Wiring Section VII GAS Piping Section XIV Installation Record Section XI START-UP ProceduresSection XII Temperature Limits Section Xiii CHECK-OUT Procedures Product Specifications Section Xvii Replacement Parts Product & 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 Compliance Residential Garage Installations Pre-Installation Items Venting Combustion Air and Venting Section II Combustion Air Air Openings Methods of Accessing Combustion Air Into a SpaceCombustion Air and Venting Combustion Air Requirements Equipment Located in Confined Spaces One Permanent Air Inlet Outdoor Combustion Air Vent System Combination of Indoor and Outdoor Combustion Air Removal of an Existing Boiler f rom a Common Vent System Hydrostatic Pressure Test Hydrostatic Test ProceduresUnit Preparation Section III Unit Preparation Handling Instructions Completion of Hydrostatic Test and Draining Unit Preparation Domestic Piping Section IV Domestic Piping Domestic Piping Mixing Valve Assembly Multiple Units Installation TR/SMART Series Application Domestic Piping Diagrams Performance 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 Circulators Personal injury, death or substantial property damage System Piping Radiant Heating with Mixing Valve Primary 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 Venting Category IV Vent Termination Clearances Venting and Combustion Air Installation Locating the Combustion Air Inlet Multiple Vent TerminationsVenting Option Non Direct Vent / Vertical Venting Option Non-Direct Vent / Horizontal Venting Option Direct Vent / Vertical Horizontal Wall Thimble Kit Venting Option Direct Vent / Horizontal Vent 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 Piping Pipe 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 Wiring Factory Wiring Schematic Internal Wiring Factory Internal Wiring Line Voltage Connections External Wiring Section IX External WiringInstallation Compliance Outdoor Temperature Limit Multiple Zone Field Wiring Using Zone Valves External Wiring Field wiring with zone circulators Typical Zone Relay Panel Wiring Performance Plus Section X Start Up Preparation Filling 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-up Operating Instructions For Your Safety Read Before LightingFollowing instructions must be followed exactly, a fire or Or loss of life Natural Gas Propane Recommended Secondary Thermostat Setting Temperature Limits Section XII Temperature Limits Temperature Limits Section XIII- Check-Out Procedures Section XIV Installation Record General Section XV Maintenance ScheduleService Technician Owner Maintenance Check 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 System Check Thermostat Limit Settings Check Temperature / Pressure Relief ValveCheck Ignition Wiring and Ground Wiring Check Control Wiring Check 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