100299634_2000545244_ Rev. A
39
BLOWER ASSEMBLY INSTALLATION
1. This power vented water heater comes with blower
assembly installed.
2. After unit is set in place, make sure blower assembly is
still mounted securely. Make sure there is no damage
to blower.
3. Make sure there is no packing material in the inlet or
discharge of the blower.
4. Make sure that the plastic tubing is still attached from
the air pressure switch to the port on the blower motor
housing. Make sure the plastic tubing is not folded
anywhere between the pressure switch and the blower
motor housing (see Figure 43 through Figure 44).
5. This water heater is a polarity sensitive appliance and
will not operate if the power supply polarity is reversed.
Power to this water heater must be wired properly
(correct polarity).
6. Do not plug in power cord until the vent system is
completely installed. The heater operates on 110-120
VAC. A grounded outlet must be within reach of the 6
foot flexible power cord supplied with the heater. The
power cord supplied may be used on a unit only where
local codes permit. If local codes do not permit use of
flexible power supply cord:
a. Make sure the unit is unplugged from the wall
outlet. Remove the screw and open the cover on
the junction box on the blower.
b. Cut the flexible power cord, leaving enough to
be able to make connections. Remove the strain
relief fitting from the box.
c. Install a suitable conduit fitting.
d. Splice field wiring into existing wiring using code
authorized method (wire nuts, etc).
e. Be certain that the neutral and line connections
are not reversed when making these connections.
f. Ground heater properly. This water heater must
be grounded in accordance with the current
edition of
“National Electrical Code”, NFPA 70
and/or local codes. These must be followed in
all cases. The water heater must be connected
to a grounded metal, permanent wiring system
or an equipment grounding conductor must be
run with the circuit conductors and connected to
the equipment grounding terminal or lead on the
water heater (see Figure 10; the wiring diagram).
g. Install the cover on the junction box and secure
it shut.
7. The blower discharge has a rubber coupling made to
accept only straight sections of 3” pipe. To start off with
an elbow, a short section of the straight pipe must be
cut and glued into the end of the elbow that will mount
in the rubber coupling.
Connections To The Blower And Air Duct
1. The CPVC vent piping
(5 ft. supplied)
connects into
the rubber coupling located on the top of the blower
assembly. This coupling includes gear clamps to
connect the venting to the blower. See Figure 43.
Important:
These connections must be properly seated
and tightened to prevent the leakage of flue gases into the
area. See Figure 43 through Figure 44.
Breathing carbon monoxide can cause brain damage or death.
Always read and understand instruction manual.
Vent pipe connections to the blower must be
properly seated and tightened to prevent the
leakage of flue gases into the area.
Breathing Hazard - Carbon Monoxide Gas
WARNING
Note:
Polypropylene vent systems require separate
adaptor (field supplied).
2. Before installing clean and lightly sand the end of
the CPVC plastic vent piping that will connect into
the rubber coupling. For polypropylene vent systems
follow manufacturer’s instructions.
3. Loosen the upper clamp on the rubber coupling and
insert the sanded end of the vent piping a full 1-1/4” .
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.
4. Tighten the upper clamp so that the vent piping is
firmly secured in the coupling and is gas tight. Do not
over tighten or cause distortion of any of the parts.
Ensure the bottom of the rubber coupling is firmly
seated on the blower outlet and that the lower gear
clamp is also secure. Check to ensure there is no
distortion or movement of the clamped assembly once
it is completed.
•
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.
Property Damage Hazard
CAUTION