Delta PG PLUS-25 guide

Venting and Combustion Air Installation

NOTICE

The maximum equivalent length is the total length of the venting and the com- bustion air inlet combined. This includes termination fittings.

NOTICE

For Delta PERFORMANCE PLUS applications that may exceed the 100 feet maximum allowable equivalent length for the venting system, contact Triangle Tube Engineering Department for addi- tional information on how the appliance can be adjusted to the application.

-For each elbow included in the system, the maximum allowable linear length must be reduced as follows:

•Each 90º elbow within the system is the equivalent of 10 linear feet.

•Each 45º elbow within the system is the equivalent of 5 linear feet.

It is recommended that the installer uses the same number of elbows and length of piping on the venting system and the combustion air inlet.

Table 2- Allowable Equivalent Length (Combined Vent and Combustion Air)

Maximum	Total Elbows within the Venting / Combustion Air System
Allowable for
Linear Length Combined	2	3	4	5	6	7
PERFORMANCE PLUS	180	170	160	150	140	130

	Fig. 19: Standard Vertical Venting Installation		Fig. 20: Vertical - Direct Vent Combination

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Delta PG PLUS-25 warranty Allowable Equivalent Length Combined Vent and Combustion Air

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 What to do if YOU Smell GAS Do not try to light any applianceHomeowner 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 Multiple Vent Terminations Locating the Combustion Air InletVenting 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 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 Recommended Gas Supply Piping Section VII Gas Piping Natural GAS Pipe Sizing Natural GasNatural Gas Supply Pressure Requirements Propane GAS Pipe Sizing 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 Verify Correct Pressure Switch Air Shutter SettingsCheck 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 Section XVI Maintenance Procedures Check the Surrounding AreaInspect 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 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 Maxi-flo Pool and Spa Heat Exchangers TTP Brazed Plate Heat Exchangers