Venting and Combustion Air Installation | Delta PG PLUS-25 guide

Venting and Combustion Air Installation

Category IV Vent Termination Clearances

Maintain the following clearances to the vent termination:

-At least 6 feet from adjacent walls

-No closer than 5 feet below roof over- hangs

-At least 7 feet above any public walk- ways

-At least 3 feet above any forced air intake (does not include the combustion air inlet) within 10 feet.

-The vent termination must be at least 4 feet from any electric meters, gas meter-regulators, relief valves or other equipment. Never terminate the vent above or below any of these items with- in 4 feet.

-Vent must terminate at least 12 inches above grade or common snow line.

NOTICE

In those applications in which the vent termination is below the projected snow line. The installer has 2 options. In the first option the vent system can be rout- ed vertically through an insulated chase or “riser box” and then terminated hori- zontally. The chase is to be constructed and insulated by the contractor, main- taining clearances for vertical and hori- zontal enclosures. In the second option the installer can use the horizontal con- centric snorket kit, see Fig. 22B page 34.

If the venting application is a horizontal direct vent:

-Must maintain 12-inch clearances below and horizontally from doors and windows. See dimension A Fig. 17.

If the venting application is a horizontal non-direct vent:

Dimension A

Direct Vent - 12 inches

Non-Direct Vent - 4 feet

Fig.17: Termination of Vent system

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Image 34

Delta PG PLUS-25 warranty Venting and Combustion Air Installation, Category IV Vent Termination Clearances

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 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 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 Locating the Combustion Air Inlet Multiple Vent TerminationsVenting 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 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 Section VII Gas Piping Recommended Gas Supply Piping Pipe 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 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 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 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 Check 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 Tank Check Control Wiring Check Temperature / Pressure Relief ValveCheck Ignition Wiring and Ground Wiring Check Thermostat Limit Settings 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 TTP Brazed Plate Heat Exchangers Maxi-flo Pool and Spa Heat Exchangers