11
Electrical Connections
Before any electrical connections are made, be sure that the water heater is
full of water and that the manual shut-off valve in the cold water supply line is
open. Check the rating plate and wiring diagram before proceeding. This
electric water heater was built and wired in accordance with the INTERTEK
testing approvals requirements. The temperature limiting device is of the
manual reset, trip-free type and has been factory installed to interrupt all
ungrounded power supply conductors in the event of thermostat failure.
Thermostats are factory set and wired in accordance with the wiring diagram
fastened to the inside of the top access panel. The plumbing supplier in your
area ordered this heater wired at the factory to comply with existing area
codes, but local utility codes may require or allow other circuitry. The
thermostats are factory set and wired in accordance with the wiring diagram
affixed to the water heater next to the thermostat/element access cover.
Consult your local power company to determine the correct electrical hook-
up in order to meet local utility and building codes and in order to obtain the
most economical rates. Also check to find out if you are required to obtain a
permit before starting the installation.
The water heater must be well grounded. The green ground wire from the
power supply shall be attached to the terminal marked for this purpose on
the terminal block for all water heaters except 10 and 15 gallon utility
models. For 10 and 15 gallon utility models, the ground wire shall be
attached to the green ground screw located under the element access cover.
Upright and lowboy models are wired for “unbalanced” three phase delta
branch circuit operation. Upright and lowboy models (only) may be
converted to single phase and/or simultaneous operation as shown on the
wiring diagram (see figure 3A and 3B). To ensure proper electrical
connection, check the voltage and wiring configuration on the rating plate
located on the front of the water heater.
Run the power leads from an adequately fused disconnect switch (not
supplied) and connect the wires to the water heater according to the wiring
diagram found in these installation and operation instructions (see figures
3A, 3B, 4 and 4A for correct wiring diagram) and located on the front of the
water heater. Where longer runs are needed or local codes and ordinances
require, an increase in wire size may be necessary. Consult local codes
and/or your local power company for any specific requirements which may
apply. In the absence of local codes and ordinances, refer to the National
Electrical Code.
