16 Page
-Two-pipe, direct-vent illustraons-
For details of the optional items, refer to the Installation manual for each optional item.
<How to install intake and exhaust venting (two-pipe, direct-vent) with the indoor models>
3" vent connecon
From 3" to 4" vent connecon
Installaon
Installaon Manual
3” coupling
Exhaust vent collar
(Female)
3” straight pipe
3” coupling
Intake vent collar
(Female)
3” straight pipe
1. Connect3"couplingsdirectlyonthe
exhaust and intake vent collar
of the water heater.
2. Connect3”straightpipestothe
couplings.
1. Connect3"x4"increasers
directly on the exhaust and intake
vent collar of the water heater.
2. Connect4”straightpipesto
the increasers.
4” straight pipe
3"x4" increaser
Exhaust vent collar
(Female)
Intake vent collar
(Female)
4” straight pipe
3"x4" increaser
Typical installaons using PVC, ABS, or polypropylene vent
Vercal Installaon
Roof
ashing
Roof
Fire stop
Horizontal Installaon
Wall
Connect between exhaust vent collar and piping.
Seetheinstruconsbelow.
Hanger
Hanger