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CONTROL SYSTEM
DESCRIPTION CHARACTERISTICS
Analogue inputs
AI1 SIW water inlet probe NTC temperature sensor (-30°C ÷ 90°C)
AI2 SUW water outlet probe NTC temperature sensor (-30°C ÷ 90°C)
AI3 SL liquid line probe NTC temperature sensor (-30°C ÷ 90°C)
AI4 STAE outdoor air probe NTC temperature sensor (-30°C ÷ 90°C)
Digital inputs
ID1
PA High pressure switch
voltage free digital inputTVE Fan thermal protection
SS Soft starter alarm
ID2
PB Low pressure switch
voltage free digital input
SEQ Phase presence and sequence controller
ID3 PD Differential pressure switch voltage free digital input
ID4
ON-
OFF
Remote stand by voltage free digital input
ID5 E-I Remote Cooling-Heating voltage free digital input
Analogue outputs
AO1 VE Fan PWM output for relay or inverter control
AO3 PM Modulating pump 10V voltage output
Digital outputs
DO1 ALL Alarm relay 2 A resistive - 250 Vac
DO2 CP Compressor relay 2 A resistive - 250 Vac
DO3 VIC Reverse cycle valve relay 2 A resistive - 250 Vac
DO4
RSC Plate heat exchanger antifreeze heater
relay 2 A resistive - 250 Vac
RAG
RE1
Tank antifreeze heater
Integrative heater 1
st
step
DO5 P Pump
500mA - 12Vdc voltage output
for control of relay K1 (4 A resistive - 250 Vac)
AO2 RE2 Integrative heater 2
nd
step
10V voltage output
for control of relay KA2 (12 A resistive - 250 Vac)
All the inputs and outputs are connected to the wiring board except for output AO2 which directly controls a relay inside the electrical
panel of the unit and output AO3 which directly control the modulating pump.
Description Typical Minimum Maximum
Power supply voltage * 12,0 V~ 10,8 V~ 13,2 V~
Power supply frequency 50 Hz / 60 Hz - -
Power 5 VA - -
Insulation class 2 - -
Protection degree Frontale IP0 - -
Ambient operating temperature 25 °C -10 °C 60 °C
Ambient operating humidity (not condensing) 30 % 10 % 90 %
Ambient storage temperature 25 °C -20 °C 85 °C
Ambient storage humidity (not condensing) 30 % 10 % 90 %
* The controller is powered by a proper insulated transformer mounted on the wiring board.
Inputs and outputs
In order to control the unit, the controller is equipped with the following inputs and outputs :
• Analogue inputs : 4
• Digital inputs : 5
• Analogue outputs : 2
• Digital outputs : 6
Controller technical data
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