User Guide
24
Wiring Diagrams
Electric Water Heaters for
3 - Phase Applications
Therm-O-Disc Thermostats
(Type 59T)
For the connection of this
water heat er to a 3-Phase Branch
Circuit, con nect field wiring to
the water heater as indicated in
the ap pro pri ate wiring diagram
at right. A sep a rate junction box
is being supplied with this water
heater (check bot tom of carton)
to accomodate wir ing and con-
duit con nec tions. Install the
Junction Box as shown on the
Installation/Instruction Sheet
in clud ed in the plastic bag
at tached to the heater.
DOUBLE ELEMENT
SIMULTANEOUS OPERATION
DOUBLE ELEMENT
NON-SIMULTANEOUS
FIG. G
FIG. H
2
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
UPPER
HEATING
ELEMENT
BLUE
4
L3
BLACK
BLACK
LOWER
HEATING
ELEMENT
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
1
1
2
RED
2
BLUE
YELLOW
G
*
YELLOW
3
L2
1
1
L1
2
4
3- PHASE BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
2
UPPER THERMOSTAT
& HIGH TEMP. LIMIT (ECO)
UPPER
HEATING
ELEMENT
BLUE
3- PHASE BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
4
L3
BLACK (10 GA)
RED (10 GA)
BLACK
LOWER
HEATING
ELEMENT
LOWER
THERMOSTAT
& HIGH TEMP
LIMIT (ECO)
1
4
1
2
RED
2
BLUE (10 GA)
YELLOW
G
*
YELLOW (10 GA)
3
3
L2
1
1
L1
2
THIS ELECTRIC WATER HEATER IS WIRED AS INDICATED ABOVE OR BELOW
Grounding conductor may be required.
Refer to Wirin g Sectio n o f Man ual
*
Th is water heater is factory equipped for two (2) wire connection to
ele ctrical p ower. For use with "off-peak" meter (timer) remove wire
nut from red and black leads and connect to "off-peak" meter (timer).
!
Wiring Diagrams — Therm-O-Disc Thermostats (Type 59T)
DOUBLE ELEMENT
SIMULTANEOUS O P ERATION
DOUBLE ELEMENT
SIMULTANEOUS O P ERATION
WITH 4 WIRE OUTLET
DOUBLE ELEMENT
NON-SIMULTANEOUS
DOUBLE ELEMENT
NON-SIMULTANEOUS
WITH 4 WIRE OUTLET
!
DOUBLE ELEMENT
NON-SIMULTANEOUS
WITH 3 WIRE OUTLET
FI G. A-1
FI G. A-2 FIG. B FI G. C FI G. D FIG. E FI G. F
2
UPPERTH ERM OSTAT
& HIGH TEM P. LIM IT
(ECO )
UPPER
H EATING
ELEM EN T
BLUE
L1
JUN CTIO N
BOX
4
L2
1 3
BLACK
RED
BLACK
LOW ER
H EATING
ELEM EN T
LOW ER
TH ERM O STAT
& HIGH TEM P
LIM IT (ECO)
1
2
1
1
2
BLUE
CON N ECTORTO "O FF PEAK"
M ETER (T IM ER)
TM 2
4
YELLOW
YELLOW
2
BRAN CH CIRCUIT
TO ELEC TRI CA L
D I STRIBUTION PA N EL
BLACK
LOW ER
H EATING
ELEM EN T
2
UPPER
THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
UPPER
H EATING
ELEM EN T
BLUE
YELLOW
BLACK
L1
JUNCTION
BOX
4
L2
RED
(120V: WHITE)
1 3
1
2
BLACK
RED
LOW ER
TH ERM O STAT
1
2
4
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION
PANEL
2
1
2
UPPERTH ERM OSTAT
& HIGH TEM P. LIM IT
(ECO )
UPPER
H EATING
ELEM EN T
BLUE
YELLOW
L1
JUN CTIO N
BOX
4
L2
RED
1 3
1
2
4
BLACK
BLUE
BLACK
BLUE
YELLOW
LOW ER
TH ERM O STAT
LOW ER
H EATING
ELEM EN T
TM 1
BLACK
TM 2
BRAN CH CIRCUIT
TO ELEC TRI CA L
D I STRIBUTION PA N EL
G
*
G
*
G
*
BRAN CH CIRCUIT
TO ELEC TRI CA L
D I STRIBUTION PA N EL
UPPERTH ERM OSTAT
& HIGH TEM P. LIM IT (ECO)
2
UPPER
H EATING
ELEM EN T
BLUE
L1
JUNCTION BOX
4
L2
1 3
RED (10 GA)
BLACK
LOW ER
H EATING
ELEM EN T
LOW ER
TH ERM O STAT
& HIGH TEM P
LIM IT (ECO)
1
2
4
1 3
1
2
RED
2
BLACK
(10 GA)
YELLOW
BLACK (10 GA)
RED
(10 GA)
G
*
2
UPPERTH ERM OSTAT
& HIGH TEM P. LIM IT (ECO)
UPPER
H EATING
ELEM EN T
BLUE
L1
BRAN CH CIRCUIT
TO EL ECT RICA L
D I STRIBUTION PA N EL
JUNCTION BOX
4
L2
1 3
BLACK (10 GA)
RED (10 GA)
BLACK
LOW ER
H EATING
ELEM EN T
LOW ER
TH ERM O STAT
& HIGH TEM P
LIM IT (ECO)
1
2
4
1 3
1
2
RED
2
BLUE
(10 GA)
TO SECOND POW ER SO U RCE,
" O FF PEA K" M ETER, O R TI M ER
TM 2
TM 1
YELLOW
(10 GA)
YELLOW
G
*
(120V:N)
SINGLE ELEMENT
2
1
2
TH ERM O STAT
& HIGH TEM P.
LIM IT (ECO)
H EATING
ELEM EN T
WHITE
BLACK
BLACK
H
JUN CTIO N
BOX
N
1
G
BRAN CH CIRCUIT
TO ELEC TRI CA L
D I STRIBUTION PA N EL
120 V ONLY
2
1
2
THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
HEATING
ELEMENT
RED
BLACK
BLACK
L1
G
*
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTIO N
4
L2
RED
1 3
SINGLE ELEMENT
JUN CTIO N
BOX