John Wood Takagi - 320H-520H - Manual (Page 10)

10
PVC Venting Illustrations
Horizontal Installation Diagram (With elbow terminations)
Wall
Connection between exhaust
vent collar and PVC piping. See
the next page for instructions.
Vertical Installation Diagram
Roof
Fire stop
Connection between exhaust
vent collar and PVC piping. See
the next page for instructions.
Roof Flashing
Horizontal Installation Diagram (With 76mm (3 in.) PVC
Concentric Termination)
Keep a 25mm (1 in.) clearance between
wall and the intake section of the concentric
termination. See the diagram below.
Wall
Connection between
exhaust vent collar and PVC
piping. See the next page for
instructions.
25mm (1 in.)
min. clearance
Concentric
Termination
Insert the bird
screen included
with the termination.
How to install PVC venting with the 520H (For Exhaust)
1. Connect the TH-PA01 PVC adaptor* directly on the
exhaust vent collar of the water heater.
2. Connect a 102mm (4 in.) PVC coupler (or 4x3" PVC
reducer) to the TH-PA01 PVC adaptor.
3. From the coupler (or reducer), continue on the rest of the
vent run with 102mm (4 in.) PVC pipe (or 76mm (3 in.)
PVC pipe.)
(For Intake: 102mm (4 in.) only)
Connect a 102mm (4 in.) PVC Straight pipe directly on
the intake vent collar of the water heater.
102mm (4 in.)
PVC straight pipe
102mm (4 in.)
PVC straight pipe
102mm (4 in.)
PVC coupler
TH-PA01 PVC
adaptor*
Exhaust vent collar of
the 520H (Female)
Intake vent collar
* TH-PA01 PVC adaptor
is included with the 520H.
1.