Weil-McLain 2 Series Manual page 34

®
SlimFit Series 2
DIRECT EXHAUST — Sidewall
2. Vent pipe penetration:
a. Cut a hole for the vent pipe.
b. For combustible construction, size the vent pipe hole at least 3/8"
larger than the vent pipe diameter, or larger if specified by the vent
manufacturer.
c. For noncombustible construction, size the opening per vent manu-
facturer instructions.
d. Insert a corrosion-resistant metal thimble in the vent pipe hole as
shown in Figure 29.
e. Follow all local codes for isolation of vent pipe when passing through
floors or walls.
3. Figure 29 — Provide and install corrosion-resistant metal stop plates
(item 3) as shown.
a. The hole size in the stop plates must be just larger than the vent
pipe diameter.
b. Obtain stop plates ONLY from the vent pipe manufacturer.
4. Insert the last length of vent pipe from the outside. The shoulder of the
vent pipe female end must rest against the outer stop plate as shown.
The plate must prevent the vent from being pushed inward.
5. Insert the termination elbow into the vent pipe end.
6. Install a vent manufacturer's bird screen in the open end of the vent
termination elbow.
7. Seal exterior openings thoroughly with exterior caulk.
8. For multiple boiler terminations, see Figure 28.
34
COMMERCIAL CONDENSING GAS
- — Boiler Manual
FIRED WATER BOILER
(continued)
Multiple boiler direct exhaust sidewall
terminations (see Figure 27, page 33 for
required clearances)
Sidewall termination assembly — direct
exhaust installations
1. Vent piping — insert from
the outside until the female
end shoulder rests against
the outside stop plate.
2. Vent termination elbow —
use down-turned 90-degree
elbow.
3. Vent manufacturer's sidewall
stop plates (hole must be
just larger than the vent
diameter).
4. Corrosion-resistant thimble,
by installer.
5. Vent manufacturer's bird
screen, by installer.
Part number 550-100-180/0917