Slant/Fin VSL-160C Part A - Manuel (Page 33)

33
WARNING!!!
Never use
cellular (foam) core pipe in
vent pipe line and fi ttings.
Failure to comply could result
in severe personal injury,
death, or substantial property
damage.
WARNING!!!
Increasing or
decreasing combustion air or
vent piping is not authorized.
Failure to comply could result
in severe personal injury,
death, or substantial property
damage.
WARNING!!!
Use only
the materials listed in Tables
10-1 and 10-2 for vent pipe,
and fi ttings. 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 certifi ed to ULC-S636
(see Table 10-1).
10.5 - Install vent
and combustion air
piping
WARNING!!!
This
boiler 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 10.2
of this manual. Inspect fi nished
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 Table 10-1 and Table
10-2, failure to properly seal
all seams and joints, mixing
of venting materials or failure
to follow vent pipe and fi ttings
manufacturer’s instructions
can result in personal injury,
death or property damage.
10.4 - Minimum /
Maximum allowable
combustion air and
vent piping lengths
This boiler can be fi tted with a very
long venting system. However there
is a relationship between the length
of the venting system and the power
input of the boiler. Figure 10-7 shows
this relation which an installer must
consider when in the designing stage
of the venting.
The maximum length of the two pipes
vent system is 300 equivalent ft (Air
intake plus fl ue exhuast). However,
each single pipe can’t be longer than
150 ft.
The maximum length of the concentric
system is 70 ft.
Each 45° elbow inserted in the
concentric or split venting system, has
a loss of pressure equivalent to 2.5 ft
of linear pipe.
Each 90° elbow inserted in the
concentric or split venting system, has
a loss of pressure equivalent to 5 ft of
linear pipe.
The minimum length of the venting
sytem (Two pipes or concentric) is 1 ft
(357 mm) with one elbow.
Figure 10-7 Relation between Power input and Vent system length
10 - INSTALLATION - Vent and combustion air