Rheem 310 - Page 35

CONNECTIONS – ELECTRICAL
35
BOOSTER HEATING UNIT AND THERMOSTAT SETTING
The water heater has a booster heating unit and thermostat. The booster heating unit will be automatically
activated during periods when the ambient air temperature falls below 5°C and heating of the water is
required. The thermostat is not adjustable.
WIRING DIAGRAM
COMP
CAP
E
FAN
CAP
1
2
3
4
WHITE
BLUE
BLUE
ORANGE
WHITE
RED
N.O.
N.C.
PUMP
FAN
1
2
2
3
3
4
BLACK
BLACK
RED
BLUE
BLUE
BRWN
1
LED DISPLAY
FIGURE 3 - WIRING DIAGRAM FOR EWT
E
A
UNIT
HEATING
PUMP
FAN
S
C
R
ROBERTSHAW "ST"
ADJUSTABLE THERMOSTAT
SINGLE POLE, SINGLE THROW
GREEN/YELLOW
BLUE
RED
RED
WHITE
N
BLUE
1
2
3
4
FAN
PUMP
TANK
POWER
RED
F
1
2 3
LED
HX HOT T0
HX COLD T1
EVAP T2
COMP DISC T3
AMBIENT T4
SENSOR STRIP
(1 SPARE)
TANKS SENSOR STRIP
HEAT PUMP MODULE
SENSORS
TANK
POWER
1
2
3
4
GREEN/YELLOW
HEAT PUMP MODULE 310
310L STORAGE TANK
COMPRESSOR
PUMP PLUG
FAN PLUG
BLACK
BROWN
BLUE
BLUE
BLUE
BLACK
RED
GREEN/YELLOW
RED
GREEN/YELLOW
1
3
2
SK7138 - fig 3 EWT REV-DD 5/13
COMP
CAP
E
FAN
CAP
1
2
3
4
WHITE
BLUE
BLUE
ORANGE
WHITE
RED
N.O.
N.C.
PUMP
FAN
1
2
2
3
3
4
BLACK
BLACK
RED
BLUE
BLUE
BRWN
1
LED DISPLAY
FIGURE 3 - WIRING DIAGRAM FOR EWT
E
A
UNIT
HEATING
PUMP
FAN
S
C
R
ROBERTSHAW "ST"
ADJUSTABLE THERMOSTAT
SINGLE POLE, SINGLE THROW
GREEN/YELLOW
BLUE
RED
RED
WHITE
N
BLUE
1
2
3
4
FAN
PUMP
TANK
POWER
RED
F
1
2 3
LED
HX HOT T0
HX COLD T1
EVAP T2
COMP DISC T3
AMBIENT T4
SENSOR STRIP
(1 SPARE)
TANKS SENSOR STRIP
HEAT PUMP MODULE
SENSORS
TANK
POWER
1
2
3
4
GREEN/YELLOW
HEAT PUMP MODULE 310
310L STORAGE TANK
COMPRESSOR
PUMP PLUG
FAN PLUG
BLACK
BROWN
BLUE
BLUE
BLUE
BLACK
RED
GREEN/YELLOW
RED
GREEN/YELLOW
1
3
2
SK7138 - fig 3 EWT REV-DD 5/13
Electrical Circuit for Heat Pump – Robertshaw “ST” Thermostat