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(continued)
2. Place roof penetrations to obtain minimum of 12inches between
centers of adjacent vent pipe of another boiler for U. S. installations
(see Figure40).
3. e air inlet of a Evergreen
®
boiler is part of a direct vent connec-
tion. It is not classied as a forced air intake with regard to spacing
from adjacent boiler vents.
Prepareroofpenetrations
1. Roof penetration hole:
a. Cut a clearance hole to clear the termination outside diameter
as prescribed in the kit instructions.
b. Insert a galvanized metal thimble in the vent pipe hole.
2. Follow all local codes for isolation of vent pipe when passing
through oors, ceilings and roofs.
3. Provide ashing and sealing boots sized for the concentric termina-
tion outside diameter.
Mountconcentrictermination
1. Assemble the vent termination as described for concentric termi-
nation, page35.
2. Mount the termination as shown in Figure41.
3. Support the concentric vent/air termination at the roof penetration
as shown in Figure41 or per concentric kit instructions.
y e supports/bracing used must support the termination as-
sembly to prevent vertical slippage or sideways movement.
y e clamps used on the outside of the termination pipe must
not cut into the pipe or contain sharp edges that could cause
a crack to form.
e vent and air piping must be securely supported, and
must not rest its weight on the boiler ttings. DO NOT
drill or screw into either the vent pipe or air pipe. Failure
to properly support the vent and air piping could result in
vent piping damage, resulting in possible severe personal
injury, death or substantial property damage.
When inserting the partially-assembled termination kit
through the roof penetration, wrap plastic or other pro-
tection over the end of the exposed assembly to prevent
debris from entering the pipes. If the air passages become
blocked, the boiler will not operate. Once the rain cap has
been cemented to the assembly, there is no way to correct
the problem. e assembly would have to be replaced if
it were cut to be removed and cleaned. Altering the as-
sembly in any way could result in severe personal injury
or death due to toxic ue product emissions.
If using AL29-4C stainless vent pipe, use the vent pipe
manufacturer’s PVC adapter if connecting to a PVC
concentric vent attachment.
Do not connect any other appliance to the vent pipe or
multiple boilers to a common vent pipe.
4. Aer the assembly has been positioned in the roof opening and
all supports have been attached, install a bird screen (purchased
separately if not included with the kit) and rain cap as follows:
a. Place the bird screen on the end of the inner pipe as in
Figure42,page35, or per kit instructions for polypropylene kits.
b. Cement the rain cap in place.
Figure40 Vertical termination — concentric
termination — single or multiple boilers
Figure41 PVC concentric termination supports
See notices on previous page.
Part number 550-100-211/0122
– 34 –
220 /29 9/3 00 /39 9
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