28
4
Sidewall direct venting
Sidewall termination – optional concentric vent: Models 400 - 500 Only
Figure 4-9
Concentric Vent Dimensional Drawing - Models 400 - 500
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
5. 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.
6. 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 #100140484
installations.
7. 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.
Do not extend dimension D* more than
60 inches (1524 mm) (see FIG. 4-9).
NOTICE
⚠
WARNING
⚠
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)
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)
Installation & Operation Manual
