Lochinvar Shield SNR200-100 Installation And Service Manual page 23

3
Sidewall direct venting
Sidewall termination – optional concentric vent
Figure 3-9 Concentric Vent Dimensional Drawing -
Models SNR150-100 -- SNR200-100 / CVK3003
Instead of cementing the smaller pipe to
NOTICE
the rain cap, a field-supplied stainless steel
screw may be used to secure the two (2)
components
disassembly is desired for cleaning (see
FIG. 3-11).
When using the alternate screw assembly
WARNING
method, drill a clearance hole in the rain
cap and a pilot hole in the vent pipe for the
screw size being used.
adequate holes may cause cracking of PVC
components,
products to be recirculated. Failure to
follow this warning could result in
personal injury or death.
Do not operate the appliance with the rain
WARNING
cap removed
combustion products may occur. Water
may also collect inside the larger
combustion air pipe and flow to the
burner enclosure. Failure to follow this
warning could result in product damage or
improper operation, personal injury, or
death.
Figure 3-11 Rain Cap to Vent Pipe Alternate Assembly
(continued)
together when field
Failure to drill
allowing combustion
or recirculation of
Installation & Service Manual
TM
Figure 3-10 Concentric Vent Dimensional Drawing -
Models SNA285-125 -- SNA500-125 / CVK3007
"B" DIA.
"C" DIA.
"G"
"B" DIA. PVC
VENT / EXHAUST
A B C
60" 4" 6"
(1524 MM) (102 MM) (152 MM) (537 MM)
6. Install the Y concentric fitting and pipe assembly through
the structure's hole.
Do not allow insulation or other materials to
NOTICE
accumulate inside the pipe assembly when
installing through the hole.
7. Install the rain cap and small diameter pipe assembly into
the Y concentric fitting and large pipe assembly. Ensure
small diameter pipe is bottomed and cemented in the Y
concentric fitting for #CVK3003 installations and fastened
tightly into the rubber adapter for #CVK3007 installations.
8. Secure the assembly to the structure as shown in FIG. 3-12
using field-supplied metal strapping or equivalent support
material.
Ensure termination location clearance
NOTICE
dimensions are as shown in FIG. 3-6.
If assembly needs to be extended to allow
NOTICE
sidewall thickness requirement, the two (2)
pipes supplied in the kit may be replaced by
using the same diameter, field-supplied
SDR-26 PVC (D2241) pipe for CVK3003
and standard schedule 40 PVC for CVK3007.
Do not extend dimension D* more than
60 inches (see FIG.'s 3-9 and 3-10).
If assembly depth needs to be reduced,
NOTICE
dimension D can be as short as possible.
"A"
"D"
3"
(76 MM)
"H" DIA.
D E F G
21 1/8" 10" 7 5/8" 3"
(76 MM)
(254 MM) (194 MM)
"E"
"F"
H
6 5/8"
(168 MM)
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