Loading ...
Loading ...
Loading ...
Figure42 PVC concentric termination assembly — DO NOT
attach the rain cap until the termination has been
inserted through the roof or wall and all supports
have been installed. See LEGEND at right. See kit
instructions for details of polypropylene kits.
Part number 550-100-211/0122
– 35 –
220 /29 9/3 00 /39 9
(sidewall or vertical)
Assemblingconcentrictermination
1. Follow all instructions provided with the concentric
termination kit. e following are general guidelines
for information only.
2. See Figure42 for the typical assembly of a concentric
termination assembly.
3. Prepare the bird screen, item4 (purchase separately if
not included with the kit). Cut the bird screen to size
if required. If the bird screen must be trimmed, cut the
bird screen to t the outside diameter of the PVC inner
pipe supplied with the termination kit.
4. Partially assemble the vent termination kit in the se-
quence shown in Figure42, or per the concentric kit
instructions.
DONOT install the rain cap and bird screen
until the assembly has been inserted through
the roof (or sidewall) and all supports have
been installed. Follow instructions to cover
the end of the assembly with plastic before
inserting through the roof penetration to
prevent debris from blocking the air passages.
If necessary, you can shorten the lengths of the
inner and outer pipes for a shorter nished
assembly. But you must ensure the pipes butt
correctly at both ends. Failure to properly as-
semble the concentric termination can result
in ue gas recirculation, causing possible
severe personal injury or death.
For polypropylene applications, comply with
any additional requirements in the vent sys-
tem manufacturer’s instructions. Provide 4”
PVC-to-PP transition pieces at the boiler vent
and air connections. PP adapter must have
smooth, straight section of pipe to insert in to
the boiler vent and air connections and must
t and seal tightly. PP adapters with their own
seal which would interfere with the internal
seal of the boiler vent or air connections must
not be used. Refer to page117 for a list of
compliant adapters. Install a locking collar
at every joint.
For AL29-4C vent pipe applications, comply
with any additional requirements in the vent
system manufacturer’s instructions. Provide
a 4”PVC transition at the boiler vent connec-
tion. Air pipe must be PVC or CPVC. Provide
transition pieces to PVC at the vent and air
pipe termination connections.
5. For 4” to 3” transitions, must use appropriate vent
material. For polypropylene or stainless steel must use
approved suppliers transitions (EVG 220 only).
LEGENDforFigure42 — Inner PVC pipe (vent)
1 —Inner PVC pipe (vent)
2 —Outer PVC pipe (air)
3 —Rain cap
4 —Bird screen
5 —Y tting
6 —Finished assembly
Loading ...
Loading ...
Loading ...