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• Wiringisenclosedinapprovedconduit(ifrequired
bylocalcodes).
• Thewaterheaterandelectricalsupplyareproperly
grounded.
Alwaysreferencethewiringdiagramforthecorrectelectri-
calconnection.Thecompletewiringdiagramcanalsobe
foundonthetopofthewaterheaternearthejunctionbox
cover.
Wheninstallingtheelectricalwiringtothewaterheater
• Althoughthiswaterheaterisequippedwith"Dry-fire"
protection,besurethetankiscompletelyfilledwith
water,andallairispurgedfromthetankbefore
makinganyelectricalconnections(SeeFigure7).
Figure 7
Heating Element
,
,
,
NOTE: Applying electrical power to elements that are not submerged
in water will destroy them. The manufacturer will not warranty any
elements damaged in this manner.
Check and turn off power to the electrical wiring of the
water heater before making any electrical connections
to the water heater.
Remove the junction box cover that issecured by one
screw (Figure 8A). Place the cover and screw aside
and view the wiring diagram. Locate the four power
wires inside the junction box (there will be TWO red
wires and TWO black wires).
Connect the electrical supply to the water heater in
accordance with the local utility requirements and
codes. Astandard 1/2 inch opening has been made
in the junction box for the conduit connections (Fig-
ure 8A). NOTE: Use only 10 gauge solid copper wire
for the electrical connections and an appropriate size
double pole circuit breaker.
,
,
Fire Hazard
Use 10 gauge solid copper wire.
Use a UL approved strain relief.
Connect ground wire to green
ground screw.
Failure to do so can result in
death, fire, or electrical shock.
Ground the water heater by connecting the bare cop-
per ground wire from the home's electrical service to
the green ground screw (located on the electrical jun-
ction box on top of the water heater). See Figures 8
and 8A.
There are TWO black wires and TWO red wires in the
water heater. The smaller red and black wires are
used by the Smart Grid connector.
Figure 8
Wiring Diagram
i
Wir_
/
Water H eater _" i!r!_elnd inal
Circuit
i
_rtGrid |
i| Approved Breaker
Connectors /
Harness
I
, _w/ , I_---o,_. ;
•, i To 240v
",, i 1 Phase
........... d Power
supply
i
m
Electrical
Service ground
Figure 8A
Junction Box
Junction Box Cover
/
RedWires
(3)
From Home
Electrical Service
BlackWires
'2" Conduit
Connection
Figure 8B
Electronic Thermostat (ET)
Electronic
Thermostat
Energy Smart c_
Module (ESM)
Wiring Harness
(Junction Box)
Wiring Harness
( ET to ESM )\
Ground Wire
( Attached To T-Stat Bracket Screw )
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