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S
4
®
ERIES
Sidewall vent/air termination:
Termination kit — 3" or 4" concentric termination
1. The 3" or 4" concentric termination kit must be purchased sepa-
rately. See below.
Use only the vent materials and kits listed in Fig-
ure 12, page 18 for concentric venting. Provide pipe
adapters as specifi ed in Figure 12, page 18 .
Commonwealth of Massachusetts
When the boiler is installed within the Commonwealth of Mas-
sachusetts:
This product must be installed by a licensed plumber or gas
fi tter.
See instruction in the Boiler manual.
Allowable vent/air pipe materials
Use only the materials listed in Figure 13, page 19 .
Maximum piping length
1. Locate the termination such that the total air piping and vent piping
from the boiler to the termination will not exceed the maximum
length given in Figure 12, page 18 .
2. Maximum lengths listed in Figure 12, page 18 allow for 1 elbow.
Additional elbows required a reduction in maximum length as
explained in the table notes.
Connecting from termination to boiler
1. Install the termination as instructed in the following.
2. Then proceed to page 82 to complete the air and vent piping be-
tween the termination and the boiler.
3. The center lines between the air and vent are wider at the
concentric termination connections than at the boiler. See
Figure 87, page 77 for suggestions on adjusting the spacing when
required. In addition to the method given there, you can rotate the
Y-fi tting slightly, which will cause the air pipe to be slightly higher
or lower than the vent, but the center lines will match those at the
boiler vent and air connections.
Determine locations for terminations
A gas vent extending through an exterior wall shall not
terminate adjacent to the wall or below building exten-
sions such as eaves, parapets, balconies or decks. Failure
to comply could result in severe personal injury, death
or substantial property damage.
Locate the vent/air terminations using the following guidelines.
1. You must consider the surroundings when terminating the vent
and air:
a. Position the vent termination where vapors will not damage
nearby shrubs, plants or air conditioning equipment or be
objectionable.
72
-
GAS
FIRED WATER BOILER
— Boiler Manual
3" or 4" concentric
Termination location — 3" or 4" concentric
termination — height above grade or snow
line
Termination location — 3" or 4" concentric
termination — clearances to openings
All vent and air pipes require a
include the screens. Purchase separately
from Weil-McLain or vent kit supplier if
not included.
. Most kits do not
Part number 550-100-400/0717
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