a
Green wire
FS
Water flow switch (MC units)
b
White wire
FSC
Fan speed controller
c
Black wire
HTP
Heater thermal protection
A
Electronic control
HP
High-pressure switch (41 bar)
B
The components in the box are standard acces‐
sories supplied by the manufacturer
K1
Compressor contactor
C
The components in the box are not supplied by
the manufacturer
K2
Auxiliary heater contactor
D, M1
Compressor
LAK
Presostatic low ambient kit accessory
E, AH
Auxiliary heater
LP
Low pressure switch (2,5 bar)
F, M3
Pump (MC units)
L1
Line phase
H
Install on site
M2
Fan motor
I
“B” mm
2
Cu
MS
Main switch
AH
Auxiliary heater
N
Neutral
B1
Water inlet temperature probe (NTC)
Q1
Thermal magnetic protector
B2
Water outlet temperature probe (NTC)
Q2
General / compressor thermal magnetic protec‐
tor
B3
Temperature probe *(2)
Q3
General thermal magnetic protector, 230V / fan /
pump / crankcase heater
B4
*(3)
R00
Remote ON / OFF switch
C1
Compressor condenser
RCH
Remote COOL / HEAT switch
C2
Fan condenser
T
Transformer 230 / 24V 20 VA
F1
Electronic control protection fuse / 24 V [315 mA
SLOW] switching
V4V, G
4-way valves (on YLHA only)
F2
Fan speed controller fuse
Electric circuit diagrams
2
Electric circuit diagram YLCA/YLHA PLUS 5÷9 MC and M (230.1.50)
2.1
39
Summary of Contents for Ylca 12
Page 4: ...1 Installation manual...
Page 40: ...2 Electric circuit diagrams...
