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Installation and Operating Instructions
8.3 Electrical Diagram
This guide recommends minimum branch circuit sizing and wire size based on
National Electric Codes.
Main control board
CN18
Y/G
PE
White
POWER IN
Black
Red
3
Brown
RY1
FAN-H
Compressor
Red
White
S
C
R
Blue
Compressor Capacitor
Y/G
Electrical diagram
Figure 22
Water Heater Wattage
Phases
at 240V
5,500
1
Table 25
30 |
To Water Tank (DC MOTOR)
DC
MOTOR
DC
FAN
5
CN1
CN29
CN28
CN24
CTA2045 CN50
CN36
TEST
CN41
CN37
CN10
EEV
CN53
CN14
3
4
5
*
CT2
CT1
L1
Black
Black
White
White
L1
L2
3
1
Blue
ECO
2
4
T5U
UE
T5L
LE
Water Tank
Recommended Over Current Protection
(Fuse or Circuit Breaker) Amperage Rating
208 - 240V
30
Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 A (03.2024)
6
6
2
TH
2
T3
2
T4
2
TP
2
2
2
2
T5U/T5L
To Water Tank (T5U/T5L)
2
2
To Water Tank ( Water level Switch)
2
PRO_H
2
Water level Switch (Normally Closed)
4
4
Display
6
EEV
CTA2045
Red
Black
N
Blue
RY5N
5A
FUSE
P3P4
Black
RY6N
Blue
Relay board
L
RY5L
Brown
Red
P1P2
RY6L
Brown
L2
White
Black
Blue
Brown
L1
L2
Red
208VAC 60Hz
Red
240VAC 60Hz
Gray
Gray
KEY:
CT1
AC mutual inductor
CT2
Zero-phase electricity mutual inductor
T3
Evaporator temperature sensor
T4
Ambient temperature sensor
T5U
Tank temperature sensor (Upper)
T5L
AC mutual inductor
TP
Zero-phase electricity mutual inductor
TH
Evaporator temperature sensor
EEV
Ambient temperature sensor
ECO
Tank temperature sensor (Upper)
HEAT1N
Red
HEAT2N
Gray
HEAT1L
Red
Gray
HEAT2L
Green or Y/G
Copper Wire Size AWG
Based on N.E.C. Table 310-16 (75°C)
208 - 240V
10
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