INSTALLATION INSTRUCTIONS
32
3.11 2 Pipes Venting system Pictures & Illustrations
The two pipes direct vent system can be installed in one of the following configurations.
1. Air Intake & Exhaust Pipes on an outside horizontal wall (intake and vent adjacent)
2. Air Intake & Exhaust Pipes on an outside vertical wall / roof (intake and vent adjacent)
Exhaust piping material
Polypropylene Pipe (UL 1738) rated for a maximum temperature of 230°F
Combustion air piping material
Polypropylene (UL 1738)
PVC (Schedule 40, ANSI/ASTM D2661, ULC S102.2)
CPVC (Schedule 40, ANSI/ASTM D2661, ULC S102.2)
Installation Guidelines
Do not allow any low points in the exhaust vent system unless a proper drain fitting is used to allow
condensate to be removed.
Install exhaust vent pipe directly as possible with as few elbows as possible.
Condensate must drain from the exhaust pipe back to the boiler.
Pitch the exhaust pipe approxima
tely 5/8” per linear foot back towards the boiler.
A hacksaw or equivalent can be used to cut the vent pipe if necessary. Once cut be sure to file the
cut edges to remove all burs. Be sure not to deform the pipe.
All piping must be securely supported. Us
e approved vent pipe hangers at a minimum of 48”
intervals to prevent pipes from sagging. When utilizing a vertical exhaust system install the
approved vent pipe hangers to support the entire weight, the boiler is not designed to support the
weight of any venting system. (Contact your local vent material supplier for more specific installation
information).
Assemble all vent materials in a way that prevents the accumulation of condensate.
Be sure not to exceed the maximum total equivalent length of the dir ect vent system as indicated in
this manual. See table below.
A maximum of 7 90° elbows may be installed in the complete intake air / exhaust vent system.
When using PVC or CPVC fittings long sweep elbows are recommended.
The venting system must be installed by a licensed, professional heating contractor who is familiar
with the installation and operation of heating appliances and venting systems.
The venting system must be installed in accordance with all local, state and national codes.
To ensure continued safe operation of the boiler, the venting system must be accessible for
inspection once a year by a qualified technician.
The air intake and flue exhaust terminations should be located on a wall that is least affected by
prevailing winds (high winds may affect boiler operations).
Do not use adhesives of any kind with polypropylene vent materials. All venting must be secured
using the manufacturer’s flue pipe clamps.
If using PVC or CPVC for combustion air piping an approved solvent and cement must be used
(ANSI/ASTM D2564). Only use in well ventilated areas.
Vent Termination Requirements
The vent system must be installed according to all local, state and national regulations. Including
ANSI-Z223.1 or NFPA 54.
The vent must not terminate less than 7 feet above a paved sidewalk or driveway located on public
property. The vent pipe must not terminate within 4 feet horizontally of a gas regulator vent, electrical
meter, gas meter or any relief equipment.
The vent must not terminate less than 1 foot grade level or anticipated snow level.
The vent must not terminate within 1 foot of any window or door which can be opened, any non-
mechanical air supply inlet.
The vent must not terminate where condensate will cause problems.
The vent must not terminate in a location where ice formation could cause a hazard.
The vent must not terminate so that flue gases are directed towards structures in such a manner that it
may cause property damage or personal injury.
Содержание PCC 34-H
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Страница 72: ...69 Pensotti LLC 34 Coffin Ave Brewer ME 04412 P 207 942 3636 F 207 942 3737 www pensottiboiler com ...