
Installation & Operation Manual
29
4
Sidewall direct venting
(continued)
4" (102 MM) DIA.
6" (152 MM) DIA.
RAIN CAP
"Y" CONCENTRIC
FITTING
"FLEXIBLE" PIPE
COUPLING
6" (152 MM) DIA.
6" (152 MM) DIA.
6" (152 MM) TO 4" (102 MM) REDUCER
Figure 4-8
Kit Contents_100140484 - Models 400 - 500
Sidewall termination – optional concentric vent: Models 400 - 500
Description and usage
Lochinvar offers optional concentric combustion air and
vent pipe termination kits (Factory Kit #100140484 for 4
"
diameter - Models 400 - 500). Both combustion air and vent
pipes must attach to the termination kit. The termination
kits must terminate outside the structure and must be
installed as shown below in FIG. 4-7.
The required combustion vent pipe materials are listed in
Table 3G of this manual.
Figure 4-7
Concentric Sidewall Termination
Sidewall termination installation
1. Determine the best location for the termination kit (see
FIG. 4-7).
2. Reference
the
Determine Location Section
of this manual
for general termination considerations.
3. Cut one (1) hole 7 inch diameter into the structure to
install the termination kit.
4. Partially assemble the concentric vent termination kit.
Clean and cement using the procedures found in these
instructions.
a. Cement the Y concentric fitting to the larger kit pipe
(FIG.
4-9).
b. Cement the rain cap to the smaller diameter kit pipe
(FIG.
4-9).
Instead of cementing the smaller pipe to
the rain cap, a field-supplied stainless steel
screw may be used to secure the two (2)
components together when field disassembly
is desired for cleaning (see FIG. 4-11).
When using the alternate screw assembly
method, drill a clearance hole in the rain
cap and a pilot hole in the vent pipe for
the screw size being used. Failure to drill
adequate holes may cause cracking of PVC
components, allowing combustion products
to be recirculated. Failure to follow this
warning could result in personal injury or
death.
NOTICE
⚠
WARNING
Figure 4-9
Concentric Vent Dimensional Drawing -
Models 400 - 500
"B" DIA. PVC
VENT / EXHAUST
"A"
"H" DIA.
"D"
"E"
"F"
"G"
3"
(76 MM)
A
B
C
D
E
F
G
H
60"
4"
6"
21 1/8"
10"
7 5/8"
3"
6 5/8"
"C" DIA.
"B" DIA.
(1524 MM)
(102 MM)
(152 MM)
(537 MM)
(254 MM)
(194 MM)
(76 MM)
(168 MM)