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Installation & Operation Manual
25
4 Sidewall direct venting (continued)
Sidewall termination – optional concentric vent: Models 399 - 600 Only
Figure 4-9 Concentric Vent Dimensional Drawing - Models 399 - 600
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. 4-10).
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.
STAINLESS STEEL SCREW
(FIELD SUPPLIED)
DRILL CLEARANCE HOLE IN
RAIN CAP & PILOT HOLE
IN VENT PIPE
Figure 4-10 Rain Cap to Vent Pipe Alternate Assembly
6. Install the Y concentric fitting and pipe assembly through
the structure’s hole from an inside wall.
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 from an
outside wall. Ensure small diameter pipe is fastened
tightly into the rubber adapter for #CVK3007
installations.
8. Secure the assembly to the structure as shown in
FIG. 4-11 using field-supplied metal strapping or
equivalent support material.
Ensure termination location clearance
dimensions are as shown in FIG. 4-7.
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 standard schedule 40 PVC for
CVK3007. Do not extend dimension D*
more than 60 inches (1524 mm) (see
FIG. 4-9).
NOTICE
ƽ WARNING
ƽ WARNING
NOTICE
NOTICE
NOTICE
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)
ABCDEFGH
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)