General diagram YLCD 40 and 70
A Compressor 2 B2
Water outlet temperature probe (Antifreeze pro‐
tection)
B Pump B3 Outdoor temperature probe (Dynamic set point)
C Heater B4
Ratiometric pressure probe (Fan speed and de‐
frost control)
D Compressor 1 ID1 Phase detector/General stop
E Alarm ID2 Water flow switch
F 230 / 24 transformer ID3 High-pressure switch
G Fan control ID4 Low-pressure switch
H Communication ID5 Remote ON / OFF
I Programmable key N Neutral
B1 Water inlet temperature probe (Control set point) L Phase
User manual 1
Operating instructions 1.5
11
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