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SECTION VI
ELECTRICAL CONNECTIONS
Install electric wiring in accordance with the National Electric, ANSI/NFPA 70, and /or the CSA C22.1 Electric
Code, latest editions.
CONNECT ELECTRIC HEATING ELEMENT BACKUP
Before any electrical connections are made, be sure that the water heater is full of water and that the valve in the cold
water supply line is open. The solar water heater is supplied with either a dual or single electric heating element
backup system. The upper thermostat incorporates a manual reset temperature-limiting device. Please refer to the
TROUBLESHOOTING GUIDE section for manual reset operation. In dual heating element models, both upper and
lower thermostats incorporate a manual adjustable temperature indicator to change the potable water temperature.
The thermostat that controls the lower heating element in dual heating element models is located next to the “FROM
SOLAR COLLECTOR” connection. Refer to SECTION VII, OPERATING INSTRUCTIONS, for the WATER
TEMPERATURE ADJUSTMENT section for proper instruction in adjusting water temperature. Turn off all power
related to the heating system before proceeding with the electrical connections. Any and all wiring shall be sized and
installed to satisfy the voltage and amperage used. The water heater must be well grounded. A green ground screw
is provided at the electrical connection point for connecting a ground wire. All wiring shall be done in accordance
with all applicable local and state codes.
CONNECT SOLAR CONTROLLER AND THERMISTORS
Sensor wires are provided for connection to the controller in a separate junction box located on top of the water
heater. The brown twisted wires provide thermistor wiring from the controller to the lower control cover located
next to the “TO SOLAR COLLECTOR” connection. The orange twisted wires provide thermistor wiring from the
controller to the upper control cover. The orange wiring would be used for controllers that have connections for a
second tank location.
DANGER
Positively assure all electrical connections are unpowered before attempting installation or service of electrical
components or connections of the water heater or building. Lock out all electrical boxes with padlock once power
is turned off.
WARNING
When installed, the water heater must be electrically grounded in accordance with local codes or, in the absence of
local codes, with the National Electrical Code, ANSI/NFPA 70, and /or the CSA C22.1 Electric Code, latest
editions.
Failure to properly wire electrical connections to the water heater 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.
WARNING
Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against
the water heater, and proper care must be taken to avoid unnecessary contact (especially by children) with the water
heater.
UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT
THINNER BE USED OR STORED IN THE VICINITY OF THE WATER HEATER OR IN ANY LOCATION
FROM WHICH FUMES COULD REACH THE WATER HEATER.
Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the
field involved. Plumbing and electrical work are required.
