Brute Elite BNTH1000, Installation And Operation Instruction Manual

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Page 12
Bradford White Corp.
3.2 Venting
WarnInG
Selection of improper vent materials for installations
that are installed in closets, or will be operated
in high ambient temperature levels, may lead to
property damage, personal injury, or death.
WarnInG
A 12” or 305 mm section (for Model 1000) or 36” or
915 mm section (for Model 1700) of CPVC must be
connected directly to the boiler before a PVC vent
system can be used. Connecting PVC directly to the
boiler’s flue collar may cause vent failure, leading to
property damage, personal injury, or death.
WarnInG
Failure to use the appropriate vent material,
installation techniques, or glues and sealants could
lead to vent failure causing property damage,
personal injury or death.
WarnInG
All venting must be installed according to this
manual and any other applicable local codes,
including but not limited to, ANSI Z223.1/NFPA 54,
CSA B149.1, CSAB149.2 and ULC-S636. Failure to
follow this manual and applicable codes may lead to
property damage, severe injury, or death.
The flue temperature of the Brute Elite changes
dramatically with changes in operating water
temperature. Therefore, it is necessary to assess
the application of the boiler to determine the
required certified vent class. If the Brute Elite
is installed in an application where the ambient
temperature is elevated, and/or installed in
a closet/alcove, CPVC, polypropylene, or
stainless steel material is required. If the system
temperatures are unknown at the time of
installation, class IIC or higher venting material
is recommended.
The Brute Elite is a Category IV appliance and may
be installed with PVC, CPVC that complies with
ANSI/ASTM D1785 F441, or polypropylene that
complies with ULC-S636 Class 2C, or a stainless
steel venting system that complies with the UL
1738 Standard. (See Table 5.) The unit’s vent can
terminate through the roof, or through an outside
wall.
The use of polypropylene vent material has
been accepted by CSA for use with exhaust and
combustion. The polypropylene vent manufacturer
shall have ULCS636 Class 2C approval or higher
with a recognized listing agency for all components
used in the venting system. All components used
must be from the same manufacturer and designed
for use with exhaust temperatures of 195°F
(90°C) or higher. When installing polypropylene
vent systems, please, refer to the vent supplier’s
installation instructions for proper installation
techniques.
When using PVC/CPVC for the vent material, the
first 12 inches or 305 mm (for Model 1000) or 36”
or 915 mm (for Model 1700) of the vent must be
connected to the CPVC section included with the
Brute Elite. The CPVC vent section included with
the Brute Elite may be broken by CPVC fittings if
necessary, but never reduced in total length. See
Table 2 to select the appropriate vent pipe diameter.
When using polypropylene, all vent material must be
from the same manufacturer and UL-S636 rated.
All installations must be done following the vent
supplier’s recommended installation techniques. If
these are not available, refer to the Bradford White
recommendations for the material used.
The vent pipe must pitch upward, toward the
vent terminal, not less than 1/4” per foot, so that
condensate will run back to the Brute Elite to drain.
Route the vent pipe to the heater as directly as
possible. Seal all joints. Provide adequate hangers
as required in the venting system manufacturer’s
Installation Instructions. Horizontal portions of the
venting system must be supported to prevent sagging
and may not have any low sections that could trap
condensate. The unit must not support the weight of
the vent pipe. Please see Table 2 for proper diameter
vs. length allowed.
3.2.1 Common Venting
A single vent that is shared by multiple Brute
Elite’s
must
be engineered by a competent venting
specialist, and could involve the selection of
draft inducing equipment, hardware and controls
to properly balance flue gas pressures.
Do not
common vent Brute Elite’s unless the vent
system meets this requirement. Brute Elite’s are
never permitted to share a vent with Category I
appliances.
3.2.3 Venting requirements Unique to
Canada
Brute Elite boilers and water heaters are Vent
Category IV appliances. Per the requirements of
CAN/CSA-B149.1, only BH vent systems can be
connected to these units and such vent systems,
either ULC S636 certified stainless steel or other
ULC S636 certified BH vent (eg. plastics) must
be installed per the vent manufacturer’s certified
installation instructions.
It is the responsibility of the appropriately licensed
technician installing this Brute Elite to use ULC