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MagnaTech
BOILERS AND VOLUME WATER HEATERS
is considered to be 5 feet (1.5m). Bradford
White offers accessories to use with horizontal
and vertical exhaust vent systems, as shown in
Table 5
3.2.1
Common Venting
The MagnaTech can be common vented,
however, the common venting must be a
professionally designed and approved system.
MagnaTech units are never permitted to share a
vent with any Catagory 1 appliances.
3.2.3
Venting Requirements Unique to
Canada
MagnaTech 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 MagnaTech 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 / 149
°
F
B
Up to and including 90°C / 194
°
F
C
Up to and including 110°C / 230
°
F and
D
Up to and including 135°C / 275
°
F
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
MagnaTech: within 2 feet of the flue connection.
There is no flue gas sampling port internal to
the MagnaTech, so one must be installed in the
vent system external to the MagnaTech. 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 2)
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 MagnaTech 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.
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
Figure 2. Test Port
