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S
4
®
ERIES
Install vent/air pipi ng — boiler to termination
Complete termination preparation
1. Install vent and air terminations before proceeding. See previ-
ous pages for instructions.
Installing vent and air piping
1. For reference in the following see:
a. Sidewall terminations: see Figure 105, page 92 .
b. Vertical terminations: see Figure 106, page 92 .
2. Work from the boiler to vent or air termination. Do not
exceed the lengths given in the previous pages for either the
air or vent piping.
a. As shown in the maximum length tables, the Ultra-80 or
Ultra-105 may be installed with either 2-inch or 3-inch
vent and air piping.
b. As shown in the maximum length tables, the Ultra-230
may be installed with either 3-inch or 4-inch vent and
air piping.
c. You must install appropriate pipe reducers, where re-
quired, at both the boiler and at the termination assembly.
3. See Figure 95 for attaching vent and air pipes at the boiler.
4. Cut pipe to required lengths.
5. Deburr inside and outside of pipe ends.
6. Chamfer outside of each pipe end to ensure even cement
distribution when joining.
7. Clean all pipe ends and fi ttings. Dry thoroughly.
8. Dry assemble entire vent or air piping to ensure proper fi t
before assembling any joint.
9. For each joint:
a. Handle fi ttings and pipes carefully to prevent contamina-
tion of surfaces.
b. Apply primer liberally to both joint surfaces — pipe end
and fi tting socket.
c. While primer is still damp, lightly apply approved cement
to both surfaces in a uniform coating.
d. Apply a second coat to both surfaces. Avoid using too
much cement on sockets to prevent cement buildup
inside.
e. With cement still wet, insert pipe into fi tting, twisting ¼
turn. Make sure pipe is fully inserted.
f. Wipe excess cement from joint. Check joint to be sure a
smooth bead of cement shows around the entire joint.
10. Install pipe supports as shown in Figure 105, page 92 or
Figure 106, page 92 .
11. Slope vent and air piping continuously toward boiler, with
at least 1/4 inch drop per foot of run. Do not allow sags at
any point.
12. Maintain minimum clearance of
and any combustible wall or material.
13. Seal wall or fl oor penetration openings following local code
requirements.
82
-
GAS
FIRED WATER BOILER
inch between vent pipe
3/16
— Boiler Manual
Boiler vent and air connections
Inserting/securing vent or air pipe
into boiler connectors
AL29-4C vent pipe — If using AL29-4C stain-
less vent pipe, you must install a PVC-to-vent
pipe adapter at the boiler vent connection
(and at the termination if using the Weil-
McLain plate or the concentric termination).
Use only the adapter made by the vent pipe
manufacturer.
1. PVC/ABS pipe — Clean and chamfer insertion end of
pipe. Deburr inside of insertion end. Clean and deburr
inside and outside of other end of pipe.
The pipe end must be smooth and chamfered
to prevent possible damage to sealing gasket
in vent or air pipe adapter. Failure to comply
could result in leakage, causing possible severe
personal injury or death.
2. Inspect vent or air adapter (above) — verify no obstruc-
tions or foreign objects inside.
3. Loosen clamp screw.
4. Measure 3½ inches from end of pipe and make a mark
with felt-tip pen.
5. Loosen adapter clamp screw.
6. Apply small amount of silicon grease to end of pipe to
ease insertion.
7. Insert pipe into adapter.
8. Slide pipe down until the 3½-inch mark is reached.
Do not apply excessive force or bend the
adapter or fl ue/air pipe when inserting. The
adapter or seal could be damaged.
9. Secure vent or air pipe by tightening the adapter clamp
securely. Do not overtighten. The seal is accomplished
with the internal gasket. The clamp is only to hold the
pipe in place.
Part number 550-100-400/0717
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