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It is the responsibility of the appropriately licensed
technician installing this Brute to use ULC
S636 certified vent material consistent with the
requirements as described in the Venting and
Combustion Air section.
Class I venting systems are suitable for gas-fired
appliances producing flue gas temperature of more
than 135°C, but not more than 245°C.
Class II venting systems are suitable for gas-fired
appliances producing flue gas temperatures of 135°C
or less.
Class II venting systems are further classified into
four temperature ratings as follows:
A
Up to and including 65°C
B
Up to and including 90°C
C
Up to and including 110°C, and
D
Up to and including 135°C
Flue Gas Sampling Port -
It is also the responsibility of the installer to ensure
that a flue gas sampling port is installed in the vent
system. This flue gas sampling port must be installed
near the flue connection of the Brute: within 2 feet
of the flue connection. There is no flue gas sampling
port internal to the Brute, so one must be installed
in the vent system external to the Brute. A flue gas
sampling port available as a component of the ULC
S636 certified vent system is preferred. However, if
one is not available with the certified vent system,
Bradford White suggests using a tee with the branch
connection sized to allow for insertion of a flue gas
analyzer probe. The branch connection must be
resealable with a cap or other means to ensure the
vent system remains sealed. (See Figure 7.)
Consideration must be given to the placement and
orientation of the flue gas sampling port to ensure
that condensate is free to flow back into the Brute
and not collect anywhere in the vent system -
including in the flue gas sampling port.
Exhaust Vent Terminal -
An exhaust vent terminal must be installed. If an
exhaust vent terminal is not available with the
certified vent system, Bradford White suggests
the use of a coupler fitting from the certified vent
system into which the vent terminal screen can be
installed. Be sure to install and terminate both vent
and combustion air pipes per the instructions in this
section.
Figure 7. Test Port
3.3 Locating the Vent and Combustion
Air Terminals
3.3.1 Side Wall Vent Terminal
The appropriate Bradford White side wall vent
terminal must be used. The terminal must be located
in accordance with ANSI Z223.1/NFPA 54 and
applicable local codes. In Canada, the installation
must be in accordance with CSA B149.1 or .2 and
local applicable codes.
Consider the following when installing the terminal:
1.
Figure 8 shows the requirements for
mechanical vent terminal clearances for the
U.S. and Canada.
2.
Vent terminals for condensing appliances or
appliances with condensing vents are not
permitted to terminate above a public walkway,
or over an area where condensate or vapor
could create a nuisance or hazard.
3.
Locate the vent terminal so that vent gases
cannot be drawn into air conditioning system
inlets.
4.
Locate the vent terminal so that vent gases
cannot enter the building through doors,
windows, gravity inlets or other openings.
Whenever possible, avoid locations under
windows or near doors.
5.
Locate the vent terminal so that it cannot
be blocked by snow. The installer may
determine that a vent terminal must be
higher than the minimum shown in codes,
B
W
RADFORD
HITE
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