Installation / Operation Instruction Manual

Page 24
B RADFORD W HITE
INSTALLATION STANDARDS
MATERIAL UNITED STATES CANADA
Stainless Steel UL 1738 Venting must be ULC-S636 certied for use as
PVC, sch 40 ANSI/ASTM D1785 venting material. The venting material class must be
CPVC, sch 40 ANSI/ASTM F441 chosen based upon the maximum ue gas temperature
Polypropylene ULC-S636 and the intended application of the boiler.
Figure 16. Required Exhaust Vent Material
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In Canada, refer to CAN/CSA B149.1
Figure 17. Combustion Air and Vent Through Roof
REMARQUE : Acheminer le tube d’évent à l’appareil de
chau󰀨age le plus directement possible. Veuillez voir le
tableau 4 à la page 13 pour le bon diamètre vs. longueur
autorisée. Le tuyau d’évacuation doit pitch vers le haut,
vers la borne d’évent, pas moins de 1/4 “ par pied,
de sorte que les condensats courir vers l’ et appareil
écouler thru le réservoir des condensats. Portions
horizontales du système d’aération doit être soutenu
pour empêcher l’a󰀨aissement et peut ne pas avoir de
faibles sections qui pourraient piéger des condensats
IMPORTANT NOTE ABOUT COMMON VENTING: A
single vent that is shared by multiple units MUST be
engineered by a competent venting specialist, and
involves the selection of draft inducing equipment,
hardware and controls to properly balance ue gas
pressures. Do not common vent units unless the
vent system meets this requirement. These units
are never permitted to share a vent with Category I
appliances.
Venting Requirements Unique to Canada
These 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 certied
stainless steel or other ULC S636 certied BH vent (eg.
plastics) must be installed per the vent manufacturer’s
certied installation instructions.
As a result, two items listed in the Installation Kit (Figure
10 and Figure 11) are not included with these units for
Canada (underlined):
A exhaust vent terminal (not included)
B. air intake terminal
C. temperature/pressure gauge kit
D. circulator pump/wire harness (units with pump)
E. CPVC exhaust pipe section (80-500) (not incl.)
F. outdoor/system sensor kit
G. ow switch kit (399-850)
H. alternate size vent/terminal screens
J. exhaust vent adapter CPVC/ST ST (750-850)
It is the responsibility of the appropriately licensed
technician installing this unit to use ULC S636 certied
vent material consistent with the requirements as
described in the Venting and Combustion Air section.
Class I venting systems are suitable for gas-red
appliances producing ue gas temperature of more than
135°C, but not more than 245°C.
Class II venting systems are suitable for gas-red
appliances producing ue gas temperatures of 135°C or
less.
Class II venting systems are further classied 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
IMPORTANT! It is also the responsibility of the installer
to ensure that a ue gas sampling port is installed in
the vent system. This ue gas sampling port must be
installed near the ue connection of the unit: within 2 feet
of the ue connection. There is no ue gas sampling port