Lochinvar Shield SNA285-125 - Manual (Page 22)

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Sidewall direct venting
Figure 3-7 Kit Contents_CVK3003 - SNR150-100 --
SNR200-100
Sidewall termination installation
1. Determine the best location for the termination kit (see
FIG. 3-6).
2. The total length of piping for vent or air must not exceed the
limits given in the General Venting section on page 17 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.
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.
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 3-7 and 3-8).
b. Cement the rain cap to the smaller diameter kit pipe
(FIG.’s 3-7 and 3-8).
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 3-8 Kit Contents_CVK3007 - SNA285-125 --
SNA500-125
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 SNR150-100 - SNR200-100 and #CVK3007 for 4"
diameter - Models SNA285-125 - SNA500-125). 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 in FIG. 3-6.
The required combustion vent pipe materials are listed in Table
2A, on page 15 of this manual.
Figure 3-6 Concentric Sidewall Termination
Installation & Service Manual TM