Direct Vent - Sidewall - Weil-McLain SlimFit Manual

SlimFit
™
commercial condensing gas
DIRECT VENT — Sidewall
Figure 38
Sidewall direct vent terminations — vent and air
Determine termination location
1. The vent termination must be installed as shown in Figure 38 and
in Figure 41, page 44.
2. The termination placement must comply with clearances and
limitations shown in Figure 30, page 36.
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.
4. Install the boiler in a location that allows proper routing of all
vent and air piping from the boiler vent and air connections to
the selected sidewall location.
Do not exceed the maximum lengths of the outside vent
piping shown in Figure 38. Excessive length exposed
to the outside could result in freezing of condensate in
the vent pipe or vent/air piping failure. Follow vent/air
pipe manufacturer's instructions for proper protection
and support of the piping. In extremely cold climates,
install an insulated chase around the vent piping, par-
ticularly when using longer lengths. (DO not insulate
nonmetallic vent pipe, if used.) The chase must allow
for inspection of the vent pipe, and insulation must be
protected from water.
Multiple vent terminations
1. When terminating multiple SlimFit boilers, terminate each vent
connection as described in this manual. See Figure 40, page 44
for a typical layout.
2. Place wall penetrations to obtain minimum clearances shown in
Figure 38 and in Figure 40, page 44 for U. S. installations.
3. For Canadian installations, provide clearances required by CSA
B149.1 or B149.2 Installation Code and a ULC S636 compliant
vent kit.
Part number 550-100-116/0713
-
fired water boiler
Install vent piping
See WARNING
vent clamp on page 31. Verify that the seal is installed
correctly before inserting the vent manufacturer's
SlimFit Vent Adapter.
USE SWEEP ELBOWS FOR ALL VENT AND AIR
PIPINg WhEN POSSIBLE — Short-radius el-
bows cause higher pressure loss, resulting in less
allowable vent/air piping length. See Figure 27,
page 30 for maximum lengths and reductions
required for fittings.
1. Install the vent manufacturer's SlimFit Vent Adapter in the boiler
vent outlet. Follow all vent manufacturer instructions.
2. Install a vent manufacturer reducer if needed to adapt to the vent
size being used.
3. Slope vent piping toward the boiler — slope vent piping a mini-
mum of ¼ inch per foot in horizontal runs.
4. Support piping independently of the boiler — 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. Or
follow vent pipe manufacturer's instructions.
Install vent termination fittings
1. Maintain the required dimensions of the finished termination
piping as shown in Figure 31, page 37.
2. Air pipe penetration:
a. Cut a hole for the air pipe, sized per the vent/air pipe manu-
facturer's instructions.
— Boiler Manual
Use only the vent/air materials and kits
listed in Figure 28, page 31
Read and follow all instructions in this
manual. DO NOT proceed with vent/
air installation until you have read
page 28 through page 33 and page 40
through page 42
Locate the termination such that the total
vent piping from the boiler to the termi-
nation will not exceed the maximum
length given in Figure 27, page 30
Comply with all vent system manufac-
turer's instructions
Provide a vent manufacturer's SlimFit Vent
Adapter and reducer (if needed) at the boiler
vent connection.
Every joint on polypropylene vent pip-
ing must include a locking collar. Failure to
supply locking collars could result in vent/
air piping leakage.
about boiler vent/air outlet seals and
.
.
43