Eev Pcb [4-6] / [4-7] - Viessmann VITOTRONIC 200 Service Instructions Manual

PCBs and connection options
EEV PCB [4-6] / [4-7]
For allocation to heat pump type: See "Overview of
PCBs".
[4-6]: Vitocal 333-G
M
V
1~
1 2
M
U
1~
1 2
M
T
1~
1
2
N L1
?
230 V/
50 Hz
R
Fig. 78
Modbus: Inverter control
A
Modbus: Connecting cable to the controller and
B
sensor PCB, terminal X18
Electronic expansion valve
C
PWM signal for primary pump
D
PWM signal, secondary pump
E
Low pressure sensor
F
High pressure sensor
G
Suction gas temperature sensor (NTC 10 k
H
Primary circuit flow temperature sensor
K
(NTC 10 k )
Ω
Hot gas temperature sensor (NTC 10 k
L
Liquid gas temperature sensor (NTC 10 k
M
308
A B
+ - +
-
J15 J19
J20
J17
J14
J5
Secondary circuit flow temperature sensor
N
(NTC 10 k
Secondary circuit flow temperature sensor down-
O
stream of instantaneous heating water heater
(NTC 10 k
Secondary circuit return temperature sensor
P
(NTC 10 k
Internal power supply (factory connection)
R
) "Central heating/DHW heating" 3-way diverter
T
Ω
valve
Primary pump
U
) V Secondary pump
Ω
)
Ω
GND
PWM
PWM
GND
E
PWM
PWM
D
C
M
1~
J7 J27 J26
J10
J13
J21
)
Ω
)
Ω
)
Ω
P
F
P
G
ϑ
H
ϑ
K
ϑ
L
ϑ
M
ϑ
N
ϑ
O
ϑ
P