John Wood Power Vent (Non-ENERGY STAR qualified models) - Manual (Page 14)

Vent pipe connection to blower
1.
The plastic vent piping connects into the rubber cou-
pling located on the top of the blower assembly. This
coupling includes gear clamps to connect the venting to
the blower. These connections must be properly seated
and tightened to prevent the leakage of flue gases into
the area. See Figures 13, 14 and 15.
2. G/JW 40, 50 and 60-gallon heaters are supplied with a
50mm (2 in.) adapter for installations using PVC vent
piping. This adapter must be used when using PVC pip-
ing. For installations using 76mm (3 in.) PVC venting,
use PVC adapter shown in Figures 13 and 14(c).
Securely attach the PVC adapter to the first section of
PVC vent piping using the proper solvent cement before
installation into the blower coupling.
3. G/JW 40, 50 and 60-gallon heaters using CPVC vent
piping may be connected directly into the rubber cou-
pling. For heaters using 76mm (3 in.) CPVC piping, the
venting may be connected to the blower using the
available rubber reducer or by using a 76mm to 50mm
(3 in. to 2 in.) CPVC reducer before connecting to the
50mm (2 in.) rubber coupling.
4. G/JW5065 high input models are supplied with a 76mm
(3 in.) rubber coupling and are designed to accept the
PVC or CPVC venting piping directly as shown in Figure
15.
5. Clean and lightly sand the end of the CPVC plastic vent
piping or PVC adapter that will connect into the rubber
coupling.
6. Loosen the upper clamp on the rubber coupling and
insert the sanded end of the CPVC vent piping or the
PVC adapter a full 32mm (1-1/4 in.). Do not use glue or
sealant in the rubber coupling. Check that there is no
stress on the connection or the vent piping that may be
caused by twisting or bending.
* These parts are available from your water heater supplier.
– 14 –
PVC PIPE
COUPLING
50mm (2 in.)
ADAPTER
FOR PVC
76mm (3 in.)
ADAPTER
FOR PVC
Figure 13 Pipe Assembly Adapters
PIPE
(CPVC)
UPPER GEAR
CLAMP
RUBBER
ADAPTER
LOWER
GEAR CLAMP
CAUTION:
• Do Not Overtighten The Top And Bottom
Gear Clamps Of The Rubber Coupling.
• Do Not Apply Solvent Cement Or Silicone
To The Rubber Coupling Connection.
(c)
Figure 14 Blower, Fittings and Vent Pipe Options
(a)
FOR 40, 50 AND 60-GALLON
HEATERS. BLOWER ASS’Y
WITH ADAPTER FOR 50mm
(2 in.) NOMINAL PVC VENT
PIPE.
CPVC VENTING DOES NOT
REQUIRE ADAPTER.
FOR 40, 50 AND 60-GALLON
HEATERS. BLOWER ASS’Y
WITH ADAPTER FOR 76mm
(3 in.) NOMINAL PVC VENT
PIPE.
CPVC VENTING DOES NOT
REQUIRE ADAPTER.
BLOWER
OUTLET
FLANGE
BLOWER
VENT PIPE
50mm (2 in.)
VENT PIPE
76mm (3 in.)
ADAPTER
150mm (6 in.)
MIN.
150mm (6 in.)
MIN.
ADAPTER
(b)
FOR 40, 50 AND 60-GALLON
HEATERS. BLOWER ASS’Y
WITH ADAPTER FOR 76mm
(3 in.) NOMINAL PVC VENT
PIPE.
CPVC VENTING DOES NOT
REQUIRE ADAPTER.
ADAPTER
BLOWER
VENT PIPE
76mm (3 in.)
PVC
REDUCER
76mm -
50mm
(3 in. - 2 in.)
*RUBBER
COUPLING
Figure 15 Blower, Fittings and Vent Pipe Options
HI INPUT MODEL 5065
HEATERS. BLOWER ASS’Y
WITH RUBBER COUPLING
FOR 76mm (3 in.) NOMINAL
CPVC OR PVC VENT PIPE.
150mm (6 in.)
MIN
VENT PIPE
76mm (3 in.)
RUBBER
COUPLING