Lochinvar Knight XL 400 - 801 Installation & Operation Manual page 28

4
Sidewall direct venting
Sidewall termination – optional concentric vent: Models 400 - 601 Only
Figure 4-9 Concentric Vent Dimensional Drawing - Models 400 - 601
Instead of cementing the smaller pipe to
NOTICE
the rain cap, a fi eld-supplied stainless steel
screw may be used to secure the two (2)
components together when fi eld disassembly
is desired for cleaning (see FIG. 4-10).
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. 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
WARNING
cap removed or recirculation of combustion
products may occur. Water may also collect
inside the larger combustion air pipe and
fl ow to the burner enclosure. Failure to
follow this warning could result in product
damage or improper operation, personal
injury, or death.
Figure 4-10 Rain Cap to Vent Pipe Alternate Assembly
STAINLESS STEEL SCREW
(FIELD SUPPLIED)
DRILL CLEARANCE HOLE IN
RAIN CAP & PILOT HOLE
IN VENT PIPE
28
"B" DIA.
"C" DIA.
"G"
"B" DIA. PVC
VENT / EXHAUST
A B C
60" 4" 6"
(1524 MM) (102 MM) (152 MM) (537 MM)
"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)
5. Install the Y concentric fi tting and pipe assembly through
the structure's hole from an inside wall.
NOTICE
6. Install the rain cap and small diameter pipe assembly
into the Y concentric fi tting and large pipe assembly
from an outside wall. Ensure small diameter pipe is
fastened tightly into the rubber adapter for #CVK3007
installations.
7. Secure the assembly to the structure as shown in
FIG. 4-11 using fi eld-supplied metal strapping or
equivalent support material.
NOTICE
NOTICE
NOTICE
Installation & Operation Manual
"E"
"F"
H
6 5/8"
(168 MM)
Do not allow insulation or other materials
to accumulate inside the pipe assembly
when installing through the hole.
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,
fi eld-supplied standard schedule 40 PVC
for CVK3007. Do not extend dimension
D* more than 60 inches (1524 mm) (see
FIG. 4-9).
If assembly depth needs to be reduced,
dimension D can be as short as possible.