Lochinvar Shield SNR150-100 - Manual (Page 27)

27
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 the rain cap, a field-supplied stainless
steel screw may be used to secure the
two (2) components together when
field disassembly is desired for cleaning
(see FIG. 3-11).
When using the alternate screw assembly
method, drill a clearance hole in the rain
cap and a pilot hole in the vent pipe
for the screw size being used. Failure to
drill adequate holes may cause cracking of
PVC components, allowing combustion
products to be recirculated. Failure to
follow this warning could result in personal
injury or death.
Do not operate the appliance with
the rain cap removed or recirculation
of 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
6. Install the Y concentric fitting and pipe assembly through
the structure’s hole.
Do not allow insulation or other materials to
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
dimensions are as shown in FIG. 3-6.
NOTICE
ƽ WARNING
ƽ WARNING
NOTICE
NOTICE
NOTICE
Figure 3-10 Concentric Vent Dimensional Drawing -
Models SNA285-125 -- SNA500-125 / CVK3007
If assembly needs to be extended to allow
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,
dimension D can be as short as possible.
NOTICE
"B" DIA. PVC
VENT / EXHAUST
"A"
"H" DIA.
"D"
"E"
"F"
"G"
3"
(76 MM)
A B C D E F G H
60" 4" 6" 21 1/8" 10" 7 5/8" 3" 6 5/8"
"C" DIA.
"B" DIA.
(1524 MM) (102 MM) (152 MM) (537 MM) (254 MM) (194 MM) (76 MM) (168 MM)
3
Sidewall direct venting
(continued)
Installation & Service Manual TM