If you lack the necessary skills required to properly install the
electrical wiring to this water heater, do not proceed but have a
qualifi ed electrician perform the installation.
When making the electrical connections, always make sure:
•
The electrical service provides 240 VAC to the water heater
for proper operation. DO NOT use 208 VAC.
•
Wire sizes and connections comply with all applicable
codes or in the absence of local or state codes follow
NFPA-70, the National Electrical Code-current edition.
•
Wiring enclosed in approved conduit (if required by local
codes).
•
The water heater and electrical supply are properly
grounded.
•
The electrical supply has the proper overload fuse or
breaker protection.
Figure 10
Green Ground Screw
Junction Box
1/2” Conduit
Green
Opening
Ground
Wire
Power Supply
Connector
Black Wire
Red Wire
Always reference the wiring diagram located on the water
heater for the correct electrical connections and
connect the
electrical supply to the water heater in accordance with local
utility requirements and codes.
When installing the electrical wiring to the water heater:
1. Although this water heater is equipped with “Dry Fire”
protection, be sure tank is completely filled with water, and
all air is purged from the tank before making any electrical
connections. See “Draining and Flushing Section”.
2. Turn off power to the electrical wiring for the water heater at
the circuit breaker/fuse box.
3. If metal conduit is used for the grounding conductor:
A. The grounding electrode conductor shall be of copper,
aluminum, or copperclad aluminum. The material shall
be of one continuous length without a splice or joint.
B. Rigid metal conduit, intermediate metal conduit,
or electrical, metallic tubing may be used for the
grounding means if conduit or tubing is terminated in
fittings approved for grounding.
C. Flexible metal conduit or flexible metallic tubing shall
be permitted for grounding if all the following conditions
are met:
• The length in any ground return path does not
exceed 6 feet.
• The circuit conductors contained therein are
protected by overcurrent devices rated at 30 amperes.