Bosch CS 3000 AWP Installations- Und Bedienungsanleitung Seite 57

Remote control board
APC
CN24 CN26
1 2 HEAT1 HEAT2 COM
MAX.250VAC/30VDC
MAX.5A
Fig. 77 Electric scheme of the remote control
ALM
Cool/Heat
HLC1
KA-H1
KA-H2
KMU
ON/OFF
SPA2
TAF1
TEMP SW
T5
Table 44 Legend of the electric scheme
• Alarm signal - ALARM
– Closed contact with alarmed unit.
– Contact on APC-board: CN24_1-2.
• Functioning compressor signal - HL1
– Connect the signal lamp as shown in the diagram.
– Contact on APC-board: CN33_COMP-STATE.
• External pump control - PUMP-N
– In case of a unit supplied with no circulation pump, control the
external pump as shown in the diagram. Use an auxiliary relay.
– Contact on APC-board: CN25_PUMP-N.
• Auxiliary heaters controls
– Contact on APC-board: CN26_HEAT1-KM1.
– The Heat1 output can be connected to an electrical heater to
prevent the water in the pipes from freezing at low temperature.
The main control for Heat1 only provides on/off signals: the
specific sizing of the heater depends on the installation needs.
CS3000 AWP – 6721852570 (2022/11)
CN33 CN25 CN69
COMP STATE PUMP N 7 8
XT2
1 2 3 4
VACS VACS
466_10 466_10
pg. 27.12 pg. 27.12
5 6 7 13 21 17 26 14 15 16 22 20 23 24 25
-
410_2
pg. 26.12
RS485 Pump signal
0-10V
Cumulative fault signal
Remote winter/summer selector
Compressor status signal lamp
Control relay for pipeline Auxiliary heater
Control relay for sanitary water storage tank auxiliary heater
Pump control contractor provided by the costumer
Remote ON/OFF selector
System charge control pressure switch
Anti-freeze sensor on water on DHW side
Remote selector for set-point change
Domestic hot water storage temperature probe
– Contact on APC-board: CN26_HEAT2-KM2.
– The Heat2 output can be connected to an electrical heater on the
DHW tank, to a gas boiler on the DHW tank or to a gas oiler on the
heating system.
– The Heat2 auxiliary heater can provide the following functions:
a) If the heat pump is not able to reach the set point for a certain
time (standard time: 90 minutes) the Heat2 signal will be
activated;
b) If the compressor is not available for alarm or for ambient
conditions out of the operating range the Heat2 signal will be
activated;
c) Anti legionella function for DHW application;
d) Water set point extension;
e) The main control for Heat2 only provides on/off signals
Electrical connections
API
MENU ON/OFF
OK
BACK UNLOCK
CUSTOMER
-
H1 H2
pg. 27.12
0010044793-001
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