Navien CR-180 Installation Manual page 30

I
Venting:
Option #3: Navien's 4" Outer Diameter (OD) Concentric Stainless steel
venting includes a concentric pipe for penetrating through the wall cavity
and then splits the exhaust and air paths into a two pipe system on the
interior. There is a O" clearance to combustibles around this pipe. It
should be used when 1 large 4" hole through the exterior wall is preferred
over 2 smaller holes for non-concentric side wall venting.
.&.
WARNING
� This vent kit is only approved for use with Navien water heaters. This vent
product is not certified for use with any other manufacturer's products.
� When using any other manufacturer's venting, follow that manufacturer's
installation instructions.
Navien's 4" OD / Zero Clearance Concentric Stainless Steel Vent Kit
**NOTE** : there is no clearance to combustibles (O") required when using
Navien's 4" OD stainless steel con centric vent system .
� m+t.F-----r� IB -- . .
I
Attaches to water heater's
air intake collar
N avie n ' s 4"00/Zero Clearance
con centric stainless steel vent kit
Seal u p
b y wal l flanges
p �
�-
t
EEE . . -
-
-
\ �
UJ---�-
L - �
rr rn :
:
!
L,, . .
Attaches to water heater's
exhaust collar
t
'I
lJ
I I
t