John Wood Takagi - 320H-520H - Manual (Page 11)

11
(For Intake: 76mm (3 in.) only)
Connect a 102mm (4 in.) PVC Straight pipe directly on
the intake vent collar of the water heater.
Connect a 4x3" PVC reducer to the 102mm (4 in.) PVC
Straight pipe.
From the reducer, continue on the rest of the vent run
with 76mm (3 in.) PVC pipe.
76mm (3 in.) PVC
straight pipe
76mm (3 in.) PVC
straight pipe
4x3" PVC
reducer
TH-PA01 PVC
adaptor*
Exhaust vent collar of
the 520H (Female)
Intake vent collar
* TH-PA01 PVC adaptor
is included with the 520H.
4x3" PVC
reducer
1026mm (4 in.)
PVC straight pipe
1.
2.
3.
Stainless steel Venting Illustrations
Horizontal Installation Diagram
Wall
Sidewall Vent
Terminator
Vertical Installation Diagram
Roof
Fire stop
Rain Cap
Roof Flashing
Regarding the clearances from the exhaust terminator to
the air inlet or opening, refer to the next few pages.
Follow all vent system manufacturer’s instructions and
all local codes.
Do not common vent or connect any vent from other
appliances to the 520H water heater vent.
Use 102mm (4 in.) Category III/IV approved or Special
BH, single or double wall stainless steel vent pipe. •
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