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Part number 550-100-325/0419
29
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
Figure 35
Use only the vent materials and kits listed in Fig-
ure 21, page 17. Provide pipe adapters if specified.
1. Locate the terminations such that the total air pip-
ing and vent piping from the boiler to the termina-
tion will not exceed the maximum length given in
Figure 20, page 16.
For polypropylene applications, comply with any
additional requirements in the vent system manu-
facturer’s instructions. (Do Not use 3” PVC transi-
tion pieces at the boiler vent and air connections).
Install a locking collar at every joint.
For AL29-4C vent pipe applications, comply with
any additional requirements in the vent system
manufacturer’s instructions. Provide a AL29-4C
starter piece from the AL29-4C manufacturer to
the transition piece at the boiler vent connection.
The air piping must be PVC or CPVC. Provide a
3” PVC transition piece at the boiler air connection
if using 2” air piping.
2. For 3” to 2” transitions, must use appropriate vent material.
For polypropylene or stainless steel must use approved sup-
pliers transitions.
1. The air and vent terminations must be installed as shown
in Figure 30.
2. The terminations must comply with clearances and limita-
tions shown in Figure 22, page 19.
3. Locate the terminations so they are not likely to be damaged
by foreign objects, such as stones or balls, or subject to buildup
of leaves or sediment.
1. Vent pipe penetration:
a. Cut a hole for the vent pipe. For either combustible or
noncombustible construction, size the vent pipe hole at
least 0.4” larger than the vent pipe diameter.
b. Insert a galvanized metal thimble in the vent pipe hole.
2. Follow all local codes and vent pipe manufacturer’s instruc-
tions for isolation of vent pipe when passing through floors,
ceilings and roofs.
3. For Canadian installations, provide clearances required by
CSA B149.1 or B149.2 Installation Code and a ULC S636
compliant vent kit.
4. Provide flashing and sealing boots sized for the vent pipe and
air pipe. Follow all vent pipe manufacturer’s instructions.
Vent termination and fittings
1. Prepare the vent termination coupling by inserting a bird
screen. Bird screens must be purchased separately. See the
parts list at the end of this manual for part numbers.
2. Maintain the required dimensions of the finished termination
piping as shown in Figure 36.
1. When terminating multiple boilers, terminate each vent/air
connection as described in this section.
2. Place adjacent terminations at least 6 inches apart.
3. For Canadian installations, provide clearances required by
Natural Gas and Propane Installation
CAN/CSA
B149.1 or
B149.2 Installation Code.
14 DIRECT VENT —
Read and follow all instructions in this manual.
read through
See notices at left.
Install the boiler in a location that allows proper routing of
all vent and air piping to the selected locations.
Make sure the selected vertical termination location com-
plies with Figure 22, page 19.
Use only the vent materials listed in Figure 21, page 17.
Provide pipe adapters where required. Vent piping and
air piping lengths must not exceed the values shown in
Figure 20, page 16.
Prepare the vertical penetration (vent) and sidewall penetra-
tion (air) and secure penetration components as instructed
in this section.
The air piping must terminate in a 90-degree down-turned
elbow as shown above. The vent piping must terminate in
a as shown above.
Install vent and air piping between the boiler and the air
and vent terminations. Slope horizontal piping downward
toward the boiler at least 1/4 inch per foot. Install pipe sup-
ports every 5 feet on both the horizontal and vertical runs.
Install a hanger support within 6 inches of any upturn in the
piping. See page 30 for general guidelines. Also comply with
vent pipe manufacturer’s instructions.
See notices at left.
Insert the vent and air piping through the penetrations and
secure the termination fittings.
Maintain clearances shown in this section. Vent and air
terminations must be fitted with bird screens as shown.
— DO NOT use short radius
elbows for vent or air piping. Boiler performance
could be affected.
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