Technical information

General diagram
A1 µchiller
2
N Neutral
A2 µchiller
2
(expansion) L Phase
A Four-way valve B1 Water inlet temperature sensor (Control set point)
B Pump B2
Water outlet temperature sensor (Antifreeze pro‐
tection)
C Heater B3 Outdoor temperature sensor (Dynamic set point)
D / K Compressor 1 / Compressor 2 B4, B8
Radiometric pressure sensor (Fan speed and de‐
frost control)
E Alarm ID1 Remote COOL / HEAT Water flow control
F 230 / 24 transformer ID2 Fan heat switches
G Fan speed control ID3, ID8 High-pressure switch
H Communication ID4, ID9 Low-pressure switch
I Programmable key ID5 Remote ON / OFF
J Transformer connection ID7 Flow switch
ID10 General protection
1 Technical Information
1.13 Operating instructions
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