9
7.3.3 - INPUT / OUTPUT BOARD
Water inlet probe - Ai1
Water outlet probe - Ai2
(not used) - Ai13
Outside temperature sensor - Ai4
GND
GND
(not used) - AN1
12V
AN2 - (not used)
GND
GND
ID11 - Thermic, ventilation, circuit B
Ai6 - (not used)
Ai5 - (not used)
S
1
2
3
4
5
6
7
8
9
10
+
-
CONN A
1
9
8
16
CONN B
1
9
8
16
12V
12C
TC1
LP pressure switch, circuit A - ID5
HP pressure switch, circuit A - ID4
Water output - ID3
(not used) Heating / Cooling - ID2
On / Off - ID1
ID6 - Thermic, compressor, circuit A
ID7 - Thermic, ventilation, circuit A
ID8 - HP pressure switch, circuit B
ID9 - LP pressure switch, circuit B
ID10 - Thermic, compressor, circuit B
TC2
12C
Keyboard / display unit
terminal strip
Extension board connector
(not used)
TTL series port:
for connection:
- communication interface,
- parameterisation key.
Compressor, circuit A
Compressor, circuit B
Ventilation, circuit A
Ventilation, circuit B
Pump
Common
Alarm
Alarm
Common, inputs
Triac control
output (not used)
Common, inputs
12 VAC
power supply
Triac control
output (not used)
Digital outputs
Alarm report digital output
7.4 - OPERATING MODE COOLING
• Staged triggering of cooling circuits depending on the
difference in relation to the water setpoint temperature.
• Note: An automatic refrigerating circuit switchover
system allows their operating time to be shared.
7.5 - STARTING
• Initial condition:
- Machine hydraulically and electrically connected ready to operate.
- If connected, the remote On/Off contact is open (Off ).
• Turn the installation on:
- The display unit is off (except for the "decimal" point which remains illuminated); this
means that the controller is off. Turn it off by pressing and holding the "ON/OFF" button
for 2 seconds.
- The cooling indicator light
(4)
illuminates
and the display unit then indicates the
message "E00" which identifies shutdown by the remote On/Off contact (if used).
• To start the unit:
- Close the remote On/Off contact. The water inlet temperature is displayed. The circulating pump starts.
- The operating lights of the compressors (6) and (8) illuminate if required (see diagram, paragraph 7.4). If the light flashes,
it means that the compressor is starting required but that a safety delay is in progress. This light stays on when the
compressor has started.
0
C03
C05
C03
1
1
st
circuit
Water temperature
Difference between
stages
Cooling setpoint
Hystereris Hystereris
2
nd
circuit
2 seconds
