Water Heater Installation Manual
24 Page
Installaon
Installaon Manual
1. Insert no more than 12" (305 mm) of 3" straight
pipe into the exhaust/intake vent collar with 3"
adapter.
2. Connect 3" x 4" increasers to straight pipes.
3. Connect 4" straight pipes to the increasers.
Intake vent collar with
3" adapter* (Female)
Exhaust vent collar
with 3" adapter*
(Female)
3" x 4" increaser
3" x 4" increaser
4"straight pipe
3"straight pipe
no more than 12"
(305 mm)
4" straight pipe
3" straight pipe
no more than 12"
(305 mm)
1. Insert no more than 12" (305 mm) of 3" straight
pipe into the exhaust vent collar with 3" adapter.
2. Connect a 3" x 4" increaser into the 3" straight
pipe.
3. Connect 4" straight pipe into the increaser.
4. Connect spigot end of 3" street elbow into the
intake vent collar with 3" adapter. Be sure to
insert bird screen into the hub side.
Exhaust vent collar
with 3" adapter*
(Female)
3" x 4" increaser
4" straight pipe
3" straight pipe
no more than 12"
(305 mm)
Intake vent collar
with 3" adapter
(Female)
3" street elbow
with bird screen
<How to remove 3" PVC adapter from the intake/exhaust collar>
Remove the 3" adapter when using vent material
other than PVC or CPVC.
POLYPROPYLENE VENTING
WARNING! Do not mix parts or fittings of different material types, and do not mix pipe, fittings, or joining
methods from different manufacturers. Combustion exhaust can contain carbon monoxide and must be prop-
erly vented outside. Breathing abnormal amounts of carbon monoxide can result in serious injury or death.
Centrotherm Innoflue polypropylene venting is approved for use with these water heaters. Follow the instruc-
tions in this manual and in the vent manufacturer’s instructions when installing vent pipe.
Description
Centrotherm Part
No. (Trade Name
InnoFlue)
Description
Centrotherm Part
No. (Trade Name
InnoFlue)
4''/6'' x 39" (990 mm) Concentric Wall
ICWS4639
3''/5'' x 13'' (330 mm) Concentric Wall
Termination SS
ICWS3513
101 mm to 3” Adapter
ISA010103
3’’ Twin Pipe to 3’’/5’’ Concentric Adaptor
ICTC0335
101 mm to 4” Adapter
ISA010104
1. Remove each screw from 3" adapter to
detach the adapters from each vent collar.
Exhaust vent collar
(Female)
Intake vent collar
(Female)
3" adapter*
3" adapter*
Screws