Concentric Termination, Typical (Sidewall Or Vertical) - Weil-McLain Aqua Balance WMB-155 Manual

W
TM
AquaBalance
14 Concentric termination, typical
Figure 36 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 550-100-305/0118
M -
ALL OUNT GAS FIRED WATER BOILER
—
Boiler Manual
(sidewall or vertical)
LEGEND for Figure 36
1 — Inner PVC pipe (vent)
2 — Outer PVC pipe (air)
3 — Rain cap
Assembling concentric termination
1. Follow all instructions provided with the concentric
termination kit. The following are general guidelines
for information only.
2. See Figure 36, for the typical assembly of a concentric
termination assembly.
3. Prepare the bird screen, item 4 (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 fit 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 Figure 36, or per the concentric kit
instructions.
install the rain cap and bird screen
DO NOT
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 finished
assembly. But you must ensure the pipes butt
correctly at both ends. Failure to properly as-
semble the concentric termination can result
in flue gas recirculation, causing possible
severe personal injury or death.
For polypropylene applications, comply
with any additional requirements in the vent
system manufacturer's instructions. (Do Not
use 3" PVC transition pieces at the boiler vent
and air connections) and at the termination
if using a PVC concentric vent kit.
locking collar at every joints.
For AL29-4C vent pipe applications, comply
with any additional requirements in the vent
system manufacturer's instructions. Provide
a AL29-4C starter piece from the AL29-4C
manufacturer to the transition at the boiler
vent connection. Air pipe must be PVC or
CPVC. Provide a 3" PVC transition at the
boiler air connection if using 2" air pipe.
Provide transition pieces to PVC at the vent
and air pipe termination connections.
4 — Bird screen
5 — Y fitting
6 — Finished assembly
Install a
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