Terminal Strip For Internal Heat Pump Components - Viessmann BW 30 .CS Series Installation And Service Instructions Manual

Installation sequence
Electrical connections

Terminal strip for internal heat pump components

Note
See position F in diagram on page 30.
Terminals Function
8X1 Compressor 1 motor overload relay
8X3 Compressor 1 safety high pressure
switch
9X1 Compressor 2 motor overload relay
9X3 Compressor 2 safety high pressure
switch
13X6 Electronic expansion valve (EEV), Sie-
mens
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
All sensor and signal leads (0-10 V) must be
shielded with copper braiding and have a mini-
mum cross-section of 0.5 mm
Specified lead type: CV
Sensors, internal
Terminals Analogue inputs and outputs
14X1 Suction gas temperature sensor Wp
14X2 Evaporator inlet temperature sensor
14X4 Evaporator outlet temperature sensor
14X5 Condenser inlet temperature sensor
14X7 Condenser outlet temperature sensor
15X0 Temperature sensor, casing temperature
15X3 Pressure transmitter, low pressure (-1..18 bar)
15X5 Pressure transmitter, high pressure (0..50 bar)
Sensors, external
Terminals Analogue inputs and outputs
15X2 Outside temperature sensor
27X1 Temperature sensor, cylinder heating, top
25X6 Output demand, external heat source
36
(cont.)
2 .
6
Explanation
Connection values
Voltage:
■
24 VDC/230 VAC
Factory-fitted
Connection values
Voltage:
■
24 VDC/230 VAC
Factory-fitted
Connection values
Voltage:
■
24 VDC/230 VAC
Factory-fitted
Connection values
Voltage:
■
24 VDC/230 VAC
Factory-fitted
Factory-fitted
tQ
Note
Pt 1000
Pt 1000
Pt 1000
Pt 1000
Pt 1000
Pt 1000
0-10 V
0-10 V
Note
Pt 1000
Pt 1000
0-10 V