Instruction manual

Page 12
ELECTRICAL CONNECTIONS
DANGER
Confirm that all electrical connections are unpowered before installing or servicing
electrical components/connections within the water heater.
WARNING
The water heater must be electrically grounded in accordance with local codes or, in
the absence of local codes, with NFPA 70.
Failure to properly wire electrical connections may result in serious physical harm.
Electrical power may be from more than one source. Make sure all power is off before
attempting any electrical work.
ELECTRIC HEATING ELEMENT (BACKUP)
THE STORAGE TANK MUST BE FILLED
WITH WATER BEFORE CONNECTING
ELECTRIC POWER.
All electrical connections must be made with
copper conductors only. A separate branch
circuit with copper conductors, over-current
protection, and means for disconnection must
be provided by qualified service personnel.
The total wattage load and voltage requirements
are specified on the rating label located on the
front of the tank.
The thermostat and electric heating element are
pre-wired at the factory. A junction box is
located at the top of the water heater. The
junction box cover will accommodate a ½” or
¾” electrical conduit connector. Two wires are
located in the junction box (red and black) for
connection to the branch circuit. See Figure 4
for a wiring diagram.
GROUNDING INSTRUCTIONS
A green screw (ground) is located in the junction box for proper connection to ground from
the branch circuit.
SOLAR CONTROLLER AND THERMISTORS
Two locations for potable water temperature measurement have been provided. The factory
installed immersion wells are designed to accommodate insertion of a thermistor. The solar
system controller and thermistors are not supplied.
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SECTION IV: INSTALLATION (cont.)
1
2
3
4
1
2
BK
R
BK
R
RESET
L1
L2
G
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
240 V
JUNCTION BOX
HEATING
ELEMENT
THERMOSTAT
& ECO
Figure 4: Thermostat and Heating
Element Wiring