Primary piping Zoning with Circulators | Delta PG PLUS-25 manual

Primary Piping

• Size primary manifold for total flow of all circula- tors

• Size each circulator to individual circuit require- ments

• Install balancing valves to adjust flow to distribute heat to all zones

Fig. 12: Primary piping - Zoning with Circulators

• Install balancing valves to adjust flow to distribute heat to all zones

Fig. 13: Primary Piping - Zoning with Zone Valves

1.	Appliance circulator	5. System purge valve
2.	Shut-off valves	6. System circulator
3.	Flow check valve
4.	Zone valve	Note: See page 23 for near appliance piping.

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Delta PG PLUS-25 warranty Primary piping Zoning with Circulators

Contents

For Your Safety PG PLUS-25/30/35/40 Gas Fired Combination Heaters Table of Contents Section VI Vent / Combustion AIR Installation Section V Primary Piping Section VII GAS Piping Section Viii Internal WiringSection IX External Wiring Section X START-UP Preparation Section Xiii CHECK-OUT Procedures Section XI START-UP ProceduresSection XII Temperature Limits Section XIV Installation Record Section Xvii Replacement Parts Product Specifications Product & Safety Information To Protect Against Excessive Temperature and Pressure What to do if YOU Smell GAS Do not try to light any applianceHomeowner Operating Restrictions Code Compliance Pre-Installation Items Section I Pre-Installation ItemsBoiler Replacement Determining Product Location Pre-Installation Items Residential Garage Installations Combustion Air and Venting Section II Combustion Air Venting Combustion Air Requirements Methods of Accessing Combustion Air Into a SpaceCombustion Air and Venting Air Openings Outdoor Combustion Air Equipment Located in Confined Spaces One Permanent Air Inlet Combination of Indoor and Outdoor Combustion Air Vent System Removal of an Existing Boiler f rom a Common Vent System Handling Instructions Hydrostatic Test ProceduresUnit Preparation Section III Unit Preparation Hydrostatic Pressure Test Unit Preparation Completion of Hydrostatic Test and Draining Domestic Piping Section IV Domestic Piping Domestic Piping Multiple Units Installation Mixing Valve Assembly Domestic Piping Diagrams TR/SMART Series Application Performance 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 Piping System Piping Radiant Heating with Mixing Valve Personal injury, death or substantial property damage Primary 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 Requirements Venting and Combustion Air Installation Category IV Vent Termination Clearances Multiple Vent Terminations Locating the Combustion Air InletVenting Option Non Direct Vent / Vertical Venting Option Direct Vent / Vertical Venting Option Non-Direct Vent / Horizontal Venting Option Direct Vent / Horizontal Horizontal Wall Thimble Kit Excessive Horizontal Vent Runs Vent Appliance AdaptersDetermining 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 Piping Natural GAS Pipe Sizing Natural GasNatural Gas Supply Pressure Requirements Propane GAS Pipe Sizing Propane GasPropane Gas Supply Pressure Requirements Internal Wiring Section Viii Internal Wiring Wiring must be N.E.C Class Internal Wiring Factory Wiring Schematic Factory Internal Wiring Outdoor Temperature Limit External Wiring Section IX External WiringInstallation Compliance Line Voltage Connections External Wiring Multiple Zone Field Wiring Using Zone Valves Field wiring with zone circulators Typical Zone Relay Panel Wiring Section X Start Up Preparation Performance Plus Filling the Outer Primary Tank and System Check Low Water Cut-Off Device Verify Correct Pressure Switch Air Shutter SettingsCheck Thermostat Circuit Performance Plus Start-up Start-Up ProceduresFinal Checks Before Start-up If Performance Plus Does Not Start Correctly Or loss of life For Your Safety Read Before LightingFollowing instructions must be followed exactly, a fire or Operating Instructions Natural Gas Propane Temperature Limits Section XII Temperature Limits Recommended Secondary Thermostat Setting Temperature Limits Section XIII- Check-Out Procedures Section XIV Installation Record Owner Maintenance Section XV Maintenance ScheduleService Technician General Section XVI Maintenance Procedures Check the Surrounding AreaInspect the Burner Area Check Domestic System Check Combustion/ Ventilation Air OpeningsInspect Vent System and Combustion Air Piping Check Expansion Tank Check Control Wiring Check Temperature / Pressure Relief ValveCheck Ignition Wiring and Ground Wiring Check Thermostat Limit Settings Check Burner Flame Flame Signal Check Combustion LevelsReview 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