6
Concentric vent terminal
Use NTI part # 82666 or
York Part# 1CT0303
Roof Venting
Use of existing Chimney
It is permissible to run vent pipe through an existing chimney as long as:
1) The chimney is not to be used by any other appliance.
2) Flue gases don’t enter the vacant chimney.
3) Only Solid Core ABS, PVC
sch.40
, CPVC, or AL294C pipe is used.
4)
Vent lengths are within the maximums specified.
18”
12” Plus
Snow
Must insert
plastic bird
screen
Must be 1”
from wall
Support
(Field installed)
Inlet air
Exhaust
Inlet air
Exhaust
Support
(Field supplied)
Exhaust
24”
Inlet Air
Exhaust
Inlet Air
Roof weather seal
Flashing (field supplied)
Clearances and requirements of this manual
supersede, those of the Instructions enclosed in
vent terminal #650.75-N2, which contain more
detailed assembly instructions.
Note: inlet pipe must
always be connected to
the boiler.
36”
min.
Minimum 12”
plus snow
allowance
4” or greater
than 24”
48” min.
Apply plate here
Gas Vent Directly Below
Keep Free of Obstructions