VENTING
PART 8: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL
A. GENERAL
B. INSTALLING EXHAUST VENT AND INTAKE AIR VENT
1. Install the venting system in accordance with these instructions and with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, CAN/CGA B149, and/or applicable provisions of local building codes.
2. This unit is a direct vent appliance and is listed as a Category IV appliance with Underwriters
Laboratories, Inc. VENT AND INTAKE AIR VENT
C. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE AIR VENT
D. EXHAUST VENT AND INTAKE AIR VENT PIPE LOCATION
1. Determine exhaust vent location:
n
WARNING
Do not use Foam Core Pipe in any portion of the exhaust piping from this unit. Use of
Foam Core Pipe may result in severe personal injury, death, or substantial property
damage.
APPROVED VENTING MATERIAL
Item
Material
Standards for Installation in:
United States
Canada
Vent or air pipe
and fittings
PVC schedule 40/80
ANSI/ASTM D1785
CPVC and PVC venting must be
ULC-S636 Certified. IPEX is an approved
manufacturer in Canada supplying vent
material listed to ULC-S636
PVC-DWV
ANSI/ASTM D2665
CPVC schedule 40/80
ANSI/ASTM F441
Pipe
cement/primer
PVC
ANSI/ASTM D2564
IPEX System 636
Cements & Primers
CPVC
ANSI/ASTM F493
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WARNING
This vent system will operate with a positive pressure in the pipe. Do not connect vent
connectors serving appliances vented by natural draft into any portion of mechanical
draft systems operating under positive pressure.
Follow the venting instructions below carefully. Failure to do so may result in severe
personal injury, death, or substantial property damage.
n
DANGER
The Phoenix Evolution must be vented as detailed in The Venting Section Part 8. Ensure the
exhaust and intake piping comply with these instructions regarding vent system.
Inspect finished combustion air intake and exhaust piping thoroughly to ensure all joints are
well secured and airtight and comply with all applicable code requirements, as well as with
the instructions provided in this manual.
Failure to provide a properly installed vent system will cause severe personal injury or death.
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