![background image](http://html1.mh-extra.com/html/york/ylcd-100/ylcd-100_user-manual_913546029.webp)
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
Summary of Contents for YLCD 100
Page 3: ...1 User manual...