State GTS-240-NIH - Manual (Page 16)

16
Page
-Two-pipe, direct-vent illustrations-
For details of the optional items, refer to the Installation manual for each optional item.
3" vent connection
From 3" to 4" vent connection
Installation
Installation Manual
3” coupling
Exhaust vent collar
(Female)
3” straight pipe
3” coupling
Intake vent collar
(Female)
3” straight pipe
1. Connect 3" couplings directly on the
exhaust and intake vent collar
of the water heater.
2. Connect 3” straight pipes to the
couplings.
1. Connect 3"x4" increasers
directly on the exhaust and intake
vent collar of the water heater.
2. Connect 4” straight pipes to
the increasers.
4” straight pipe
3"x4" increaser
Exhaust vent collar
(Female)
Intake vent collar
(Female)
4” straight pipe
3"x4" increaser
Horizontal Installation Vertical Installation
Roof
flashing
Roof
Fire stop
Wall
Connect between exhaust vent collar and piping.
See the instructions below.
Typical installations using PVC, ABS, or polypropylene vent