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12 - INSTALLATION - CATEGORY IV: Vent and combustion air
of venting materials or failure
to follow vent pipe and fittings
manufacturer’s instructions can
result in personal injury, death
or property damage.
WARNING!!!
Use of cellular
core PVC and CPVC or Radel for
venting system is not allowed.
Use of improper materials can
result in excessive levels of
carbon monoxide which can
result in severe personal injury
or death!
WARNING!!!
Use only the
materials listed in Figure 12-7
and Figure 12-8 for vent pipe,
and fittings. Failure to comply
could result in severe personal
injury, death, or substantial
property damage.
NOTICE!
Installation must comply
with local requirements and with the
National Fuel Gas Code, ANSI Z223.1
for U.S. installations or CSA B149.1 for
Canadian installations.
For installation in Canada, vent pipe
system must be certified to ULC-S636
(see Figure 12-7).
12.4 - Install vent
and combustion air
piping
WARNING!!!
This heater
must be vented and supplied
with combustion and ventilation
air as described in this section.
Ensure the vent and air piping
and the combustion air supply
comply with these instructions
regarding vent system, air
system, and combustion
air quality. See also Section
5.1.1 of this manual. Inspect
finished vent and air piping
thoroughly to ensure all are
airtight and comply with the
instructions provided and with
all requirements of all applicable
codes. Failure to provide a
properly installed vent and
air system will cause severe
personal injury or death.
WARNING!!!
Using vent
materials other than those
listed in Figure 12-7 and Figure
12-8, failure to properly seal
all seams and joints, mixing
Figure 12-7 Approved vent materials
WARNING!!! Use of cellular core PVC, CPVC, and Radel for venting system is not allowed
12.3 - Minimum /
Maximum allowable
combustion air and
vent piping lengths
The maximum length of the two pipes
vent system is 120 equivalent ft (Air
intake plus flue exhaust). However,
each single pipe can’t be longer than
60 ft.
Each 45° elbow inserted in the
venting system, has a loss of pressure
equivalent to 3 ft of linear pipe.
Each 90° elbow inserted in the
venting system, has a loss of pressure
equivalent to 6 ft of linear pipe.
The minimum length of the venting
sytem is 1 ft (357 mm).
Vent pipe materials and fittings must comply with the following standards
Item
Material
Standard for installation
in USA
Standard for installation
in CANADA
Vent pipe
PVC schedule 40/80
ANSI/ASTM D2665
ULC-S636
CPVC schedule 40/80
ANSI/ASTM F441
Polypropylene
ULC-S636
Stainless steel AL29-4C
UL 1738
Vent fittings
PVC schedule 40
ANSI/ASTM D2466
PVC schedule 80
ANSI/ASTM D2467
CPVC schedule 80
ANSI/ASTM F439
Polypropylene
ULC-S636
Stainless steel AL29-4C
UL 1738
Pipe cement/primer
PVC
ANSI/ASTM D2564
CPVC
ANSI/ASTM F493
Содержание Esteem 399
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