Ultra Boiler Manual

Part number 550-100-440/0122
72
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3” or 4” concentric
Termination kit — 3” or 4” concentric termination
1. e 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 specied in Figure12,page18.
Commonwealth of Massachusetts
When the boiler is installed within the Commonwealth of Mas-
sachusetts:
y is product must be installed by a licensed plumber or gas
tter.
y 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. en 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-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.
Figure 78 Termination location — 3” or 4” concentric termination
— height above grade or snow line
Figure 79 Termination location — 3” or 4” concentric termination
— clearances to openings
All vent and air pipes require a bird screen
at each termination
. Most kits do not
include the screens. Purchase separately
from WM Technologies or vent kit supplier
if not included.