Technical information

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

1 Technical Information

1.13 Operating instructions