Instructions / Assembly

7
Tank MUST be full of water before power is turned
on. Heating elements WILL BE DAMAGED if ener-
gized for even a short time while tank is dry. The
water heater’s warranty does not cover damage or
failure resulting from operation with an empty or
partially empty tank. (Reference is made to the lim-
ited warranty for complete terms and conditions.)
6. ELECTRICAL CONNECTIONS & WIRING —
Check rating plate of water heater against supply
for correct voltage. The water heater is completely
internally wired from the factory to the field connec-
tion terminal block for a three phase connection.
For single phase connections refer to the wiring
diagrams in this manual and:
A. Disconnect the red and black wires from the
field terminal block legs 1, 2, and 3.
B. Reconnect all black wires to leg 1 of the field
terminal block.
C. Reconnect all red wires to leg 2 of the field ter-
minal block.
D. Connect incoming power to field terminal block
legs 1 and 2. Nothing will be connected to leg
3.
Provide a separate branch circuit with overcur-
rent protective de-vice and suitable disconnect-
ing means for each water heater. Refer to Table 1
above for minimum branch circuit sizing.
Water heater internal wiring diagrams are located in
the back of this manual.
7. GROUNDING—
The presence of water in the piping and water
heater does not provide sufficient conduction for a
ground. Nonmetallic piping, dielectric unions, flex-
ible connections, Etc.., can cause the water heater
to be electrically isolated.
The branch circuit should include either:
A. Metallic conduit or metallic sheathed cable ap-
proved for use as a grounding conductor and in-
stalled with fittings approved for the purpose.
B. Nonmetallic sheathed cable, or metallic conduc-
tor or metallic sheathed cable not approved for use
as a grounding conductor, shall include a separate
conductor for grounding. It shall be connected
to the grounding means of the water heater (1/4”
green screw) and that of the electrical distribution
box. Terminate stranded grounding conductors with
suitable pressure connectors .
ALUMINUM WIRE CONNECTIONS
When aluminum wire is used for electrical supply
leads, it is advisable to check the field terminal
connections of a new installation twenty-four hours
after the heater has been placed in service for pos-
sible need to retighten. Torque specs are marked
on the terminal block.
CAUTION
!
Model No. Serial No. Date of Installation Installed By:
Installation
WA RNING
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