General diagram YLHD 40 and 70
A B C D E
K
J
G
F
H
I
A2
A1
B1
B2
B3
A1 µchiller
2
N Neutral
A2 µchiller
2
(expansion) L Phase
A Four-way valve B1 Water inlet temperature probe (Control set point)
B Pump B2
Water outlet temperature probe (Antifreeze pro‐
tection)
C Heater B3 Outdoor temperature probe (Dynamic set point)
D / K Compressor 1 / Compressor 2 B4
Ratiometric pressure probe (Fan speed and de‐
frost control)
E Alarm ID1 General stop
F 230 / 24 transformer ID2 Water flow switch
G Fan control ID3, ID8 High-pressure switch
H Communication ID4, ID9 Low-pressure switch
I Programmable key ID5 Remote ON / OFF
J Transformer connection ID6 Remote COOL / HEAT
ID10 General protection
User manual 1
Operating instructions 1.5
27
To Next Page
Loading...
