Lochinvar Wall Mount Boiler WH 55-399 - Manual (Page 26)

4
Sidewall direct venting
Sidewall termination – optional concentric vent
Description and usage
Lochinvar offers optional concentric combustion air and vent
pipe termination kits (Factory Kit #CVK3003 for 3" diameter
- models 155 - 199, #CVK3008 for 2" diameter - models 55 -
110, or #CVK3007 for 4" diameter - models 285 - 399). Both
combustion air and vent pipes must attach to the termination
kit. The termination kit must terminate outside the structure
and must be installed as shown below in FIG. 4-6.
The required combustion vent pipe and fittings are listed in
Table 3D, on page 19 of this manual.
Figure 4-7 Kit Contents - CVK3008 & CVK3003
(reference Table 3B on page 16)
3. Cut one (1) hole (5 inch diameter for #CVK3003
installations, 4 inch diameter for #CVK3008, or 7 inch
diameter for #CVK3007 installations) 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.
4-7).
b. Cement the rain cap to the smaller diameter kit pipe
(FIG.
4-7). Figure 4-6 Concentric Sidewall Termination
26
Installation & Operation Manual
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
4" CONCENTRIC
VENT KIT
Figure 4-8 Kit Contents - CVK3007 (reference Table
3B on page 16)
Sidewall termination installation
1. Determine the best location for the termination kit (see
FIG. 4-6).
2. Reference the Determine Location Section on page 22 of this
manual for general termination considerations.