State SDV 75 70 NE/PE - Manual (Page 19)

19
FIGURE 22.
The 3” PVC, ABS, or CPVC Schedule 40 vent pipe can be run
from the water heater through the wall or from the wall to the water
heater, whichever is most convenient. The vent pipe must extend a
minimum of 1 1/2” (4 cm) through the exterior wall. Extending the
vent cap as far as possible from the surface of the exterior wall
will help minimize discoloration of the wall. Note that the inside fl ue
mounting adaptors must be slipped over the vent piping before
locating the pipe through the wall. Before securing the inside and
outside collars to the wall, use a silicone sealer between pipe and
opening to ensure a water and air tight seal.
INSTALLATION SHOWING USE OF PVC, ABS OR
CPVC PIPE FOR INLET AND OUTLET VENT PIPING
Inlet piping through any type wall.
FIGURE 23.
CONNECTING VENT TO BLOWER
1. If making an immediate horizontal run of vent off the blower, install
the following at the blower inlet: one 3" PVC Schedule 40 pipe
(3" long minimum) and one 3" PVC Schedule 40 elbow. At the
outlet, install one 3" CPVC Schedule 40 street elbow. Place the
elbows in the required direction on the blower, then secure as
described in Figure 24.
A. SECURE BOTH THE
OUTLET ELBOW AND THE
INLET PIPE WITH 3
EVENLY SPACED SCREWS,
THEN CAULK JOINTS AT
BLOWER.
B. SECURE INLET ELBOW TO
INLET PIPE WITH
SOLVENT CEMENT.
FIGURE 24.
2. If there is to be a vertical run of vent from the blower, the 3”
PVC inlet and the 3” CPVC outlet pipes must be attached to the
blower and venting hood using 3 sheet metal screws each.
SECURE EACH PIPE
WITH 3 EVENLY
SPACED SCREWS
CAULK JOINT
AT EACH PIPE
FIGURE 25.
INSTALLATION SHOWING USE OF (OPTIONAL)
CONCENTRIC TERMINATION KIT
Typical Installation
(Round Kit Number 9002749005 — Shown Below)
(Square Kit Number 9003328005):
FIGURE 26A.
Optional 3" PVC Horizontal Vent Kit
(Kit Number 9006475005):
FIGURE 26B.
If this concentric termination, through the wall type of venting system
is preferred, the concentric vent kit can be ordered from the Service
Parts Department. Installation instructions are provided with the kit.