User Guide

34
b. Cut the fl exible power cord, leaving enough to be
able to make connections. Remove the strain relief
fi tting from the box.
c. Install a suitable conduit fi tting inside the enclosure.
d. Splice fi eld 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 11; the wiring diagram).
g. Close the panel on the junction box. Make sure that
the access panel is properly secured.
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.
8. A rubber coupling is an integral part of the vent system
and must be used in every installation. Failure to do so
may result in overheating, poor performance, nuisance
lock-outs, personal injury or death.
Vent/Intake Pipe Connections To Blower/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.
Important: These connections must be properly seated
and tightened to prevent the leakage of fl ue gases into the
area. See Figure 37 & Figure 38.
2. The heaters are supplied with a 3” rubber coupling
to accept the vent pipe. Note: Polypropylene vent
systems require separate adaptor (fi eld supplied).
3. 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.
4. Loosen the upper clamp on the rubber coupling and
insert the sanded end of the vent piping a full 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.
5. Tighten the upper clamp so that the vent piping is
fi rmly 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 fi rmly
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
HOSE CONNECTION
PORT FOR
CONDENSATE DRAIN
8 in.
LOOP
TO
DRAIN
BLOWER
ASSEMBLY
Figure 36