1.2.1 General diagram, YLCA / YLHA 40
A
Four-way valve
B2
Water outlet temperature sensor (Antifreeze pro‐
tection)
B
Pump
B3
Outdoor temperature sensor (Dynamic set point)
C
Heater
B4
Radiometric pressure sensor (Fan speed and de‐
frost control)
D
Compressor 1
ID1
Water flow switch
E
Alarm
ID2
Remote COOL / HEAT
F
230 / 24 transformer
ID3
High-pressure switch
G
Fan speed control
ID4
Low-pressure switch
H
Communication
ID5
Remote ON / OFF
I
Programmable key
N
Neutral
B1
Water inlet temperature sensor (Control set point)
L
Phase
User manual
1
Operating instructions µC2 (YLCA/YLHA 40)
1.2
9