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Installation & Operation Manual
4 Sidewall direct venting (continued)
4" DIA.
SDR-26 PIPE
2 1/2" DIA.
SDR-26 PIPE
RAIN CAP
"Y" CONCENTRIC
FITTING
Figure 4-7 Kit Contents_CVK3003
Sidewall termination installation
1. Determine the best location for the termination kit (see
FIG. 4-6).
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.
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.
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
e. Do not terminate above any door or window.
Condensate can freeze, causing ice formations.
f. Locate or guard vent to prevent condensate damage
to exterior finishes.
4. Cut one (1) hole (5 inch diameter for #CVK3003
installations or 7 inch 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.’s 4-7 and 4-8).
b. Cement the rain cap to the smaller diameter kit pipe
(FIG.’s 4-7 and 4-8).
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 81 - 211 and #CVK3007 for 4" diameter - Model
286). 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. 4-6.
The required combustion air and vent pipe materials are
listed in Table 3A, on page 17 of this manual.
Figure 4-6 Concentric Sidewall Termination