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Installation & Operation Manual
24
4 Sidewall direct venting
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_CVK3007 - Models 399 - 600
Sidewall termination installation
1. Determine the best location for the termination kit (see
FIG. 4-7).
2. The total length of piping for vent or air must not exceed
the limits given in the General Venting section on page 19 of
this manual.
4. Cut one (1) hole (7 inch (178 mm) diameter for #CVK3007
installations into the structure to install the termination kit.
5. 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. 4-8).
b. Cement the rain cap to the smaller diameter kit pipe
(FIG. 4-8).
Sidewall termination – optional concentric vent: Models 399 - 600 Only
Description and usage
Lochinvar offers an optional concentric combustion air and
vent pipe termination kit (#CVK3007 for 4" (102 mm)
diameter - Models 399 - 600). 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. 4-7.
Field supplied pipe and fittings are required to complete the
installation.
The required combustion vent pipe materials are listed in
Table 3A, on page 16 of this manual.
OVERHANG
OR ROOF
12" (305 MM)
MIN
12" (305 MM)
MIN
GRADE / SNOW LINE
Figure 4-7 Concentric Sidewall Termination - Models
399 - 600
3. You must consider the surroundings when terminating the
vent and air:
a. Position the vent termination where vapors will not
damage nearby shrubs, plants or air conditioning
equipment or be objectionable.
b. The flue products will form a noticeable plume as
they condense in cold air. Avoid areas where the
plume could obstruct window views.
c. Prevailing winds could cause freezing of condensate
and water/ice buildup where flue products impinge
on building surfaces or plants.
d. Avoid possibility of accidental contact of flue
products with people or pets.
f. Do not terminate above any door or window.
Condensate can freeze, causing ice formations.
g. Locate or guard vent to prevent condensate damage
to exterior finishes.