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Vent Pipe Runs
All Power Vented water heaters generate a certain amount
of operational noise. In order to minimize noise transmission
to floor joists though hangers, place some soft material such
as foam rubber, approximately 12mm (1/2 in.) thick,
between hangers and the vent pipes.
1. Horizontal runs must not, under any circumstances, run
downhill then run uphill thus forming a valley where con-
densation can accumulate and block the vent pipe.
2. Horizontal runs require a minimum 3mm (1/8 in.) rise
per 1.5m (5 ft) and a support every 1.2m (4 ft.). Ensure
there is enough height between heater and termination
to raise vent pipe runs the required distance.
3. Vertical runs require a support every 1.5m (5 ft.) that
must provide proper support to prevent stress on the
pipes.
Vent Pipe Connection to Blower
A rubber coupling is supplied with the water heater to con-
nect the venting to the blower using gear clamps (supplied).
Important: These connections must be properly sealed to
prevent the leakage of the products of combustion into the
living area.
Rubber Coupling Connection
ABS and CPVC vent piping may be directly connected to the
blower assembly as shown in Figures 15 & 16. For heaters
installed as shown in Figure 15 (c), order 50mm (3 in.) rub-
ber coupling connector (P/N 63234).
PVC vent pipe installations must use a PCV vent conversion
kit as shown in Figure 14. Order PVC Vent Conversion Kit
P/N 73901 for 50mm (2 in.) vent pipe installations. For
76mm (3 in.) vent pipe installations order PVC Vent
Conversion Kit P/N 73876.
1. Clean and lightly sand the end of the vent pipe that will
connect to the rubber coupling. This will ensure a good
mechanical connection between the coupling and the
pipe.
2. Apply solvent cement and join the PVC coupling of the
adaptor to the venting system. (PVC Only).
3. At the rubber coupling, loosen the upper gear clamp to
allow the vent piping to be inserted fully 32mm (1-1/4
in.) deep. Do not use sealant or glue.
Figure 16 Blower, Fittings and Vent Pipe Options
MODEL 5065 HEATERS. BLOWER
ASS’Y WITH RUBBER COUPLING FOR
76mm (3 in.) NOMINALABS, CPVC OR
PVC VENT PIPE.
PVC PIPE
COUPLING
50mm (2 in.)
ADAPTOR
FOR PVC
(P/N 73901)
76mm (3 in.)
ADAPTOR
FOR PVC
(P/N 73876)
Figure 14 Pipe Assembly Adaptors
– 14 –
(b)
Figure 15 Blower, Fittings and Vent Pipe Options
(c)
RUBBER
COUPLING
P/N 63234
REDUCER
76mm - 50mm
(3 in. - 2 in.)
(a)
FOR 40 AND 50 GALLON HEATERS.
BLOWER ASS’Y WITH RUBBER COUPLING
FOR 50mm (2 in.) NOMINALABS OR CPVC
VENT PIPE.
PVC VENTING REQUIRES ADAPTOR KIT
P/N 73901 (SEE FIGURE 14).
FOR 40 AND 50 GALLON HEATERS.
BLOWER ASS’Y WITH RUBBER COUPLING
FOR 76mm (3 in.) NOMINALABS OR CPVC
VENT PIPE.
PVC VENTING REQUIRES ADAPTOR KIT
P/N 73901 (SEE FIGURE 14).
FOR 40 AND 50 GALLON HEATERS.
BLOWER ASS’Y WITH RUBBER COUPLING
FOR 76mm (3 in.) NOMINALABS OR CPVC
VENT PIPE.
PVC VENTING REQUIRES ADAPTOR KIT
P/N 73876 (SEE FIGURE 14).
TOP GEAR
CLAMP
RUBBER
COUPLING
BOTTOM
GEAR
CLAMP
BLOWER
OUTLET
FLANGE
BLOWER
VENT PIPE
50mm (2 in.)
VENT PIPE
76mm (3 in.)
VENT PIPE
76mm (3 in.)
PIPE
(CPVC)
UPPER GEAR
CLAMP
RUBBER
ADAPTOR
LOWER
GEAR CLAMP