John Wood Commercial - AJWS - Manual (Page 15)

ELECTRICAL CONNECTIONS
If you lack the necessary skills required to properly install
the electrical wiring to this water heater, do not proceed but
have a qualified service technician perform the installation.
When making the electrical connections, always make sure:
• The voltage and frequency correspond to that specified
on the water heater data plate on the front of the water
heater.
• The electrical supply has the proper overload fuse or
breaker protection. The water heater draws less than 7
amps.
• Wire sizes and connections comply with all applicable
codes.
• Wiring is enclosed in approved conduit (if required by
local codes).
• The water heater and electrical supply are properly
grounded.
• This water heater must be “hard-wired” do not use an
extension cord to supply electrical power to this water
heater.
Note: The wiring diagram can be found on page 17. Always
reference the wiring diagram(s) for the correct electrical
connections.
Caution: Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper and danger-
ous operation. Verify proper operation after servicing.
Electrical Installation
1. Shut off the power at the electrical service box.
2. Loosen the screws securing the access panel to the
electrical compartment. (The electrical wiring diagram
can be found on the inside of the access panel.) Set the
access panel aside.
3. Connect the electrical supply to the water heater in
accordance with local utility requirements and codes or,
in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70 and/or the CSA C22.1,
Electrical Code. Use only a dedicated electrical circuit
containing a properly sized fuse or circuit breaker.
Maximum overload protection should not exceed 15
Amperes.
4. Connect this circuit (directly from the electrical service
box) to an electrical disconnect switch.
5. Ground the water heater by connecting the electrical
service ground wire to the green ground wire (provid-
ed).
Note: The power supply to this water heater must be prop-
erly polarized, [120 volts from the hot lead (black) to ground
and 0 volts from the neutral lead (white) to ground] other-
wise, the unit will not operate.
6.
After making all electrical connections, completely fill
the tank with water and check all connections for leaks.
Open the nearest hot water faucet and let it run for 3
minutes to purge the water lines of air and sediment and
to ensure complete filling of the tank. The electrical
power may then be turned on.
15
Electrical Shock Hazard
WARNING
Disconnect power before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death
or electrical shock.