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a
Green wire
FSC
Fan speed controller
b
White wire
HTP
Heater thermal protection
c
Black wire
HP
High-pressure switch (41 bar)
A
Electronic control
K1
Compressor contactor
B
The components in the box are standard acces‐
sories supplied by the manufacturer
K2
Auxiliary heater contactor
C
The components in the box are not supplied by
the manufacturer
K3
Pump contactor (TC units)
D, M1
Compressor
LAK
Presostatic low ambient kit accessory
E, AH
Auxiliary heater
LP
Low pressure switch (2,5 bar)
F, M4
Pump (TC units)
L1, L2, L3
Line phases
H
Install on site
M2, M3
Fan motor 1 and 2
I
“B” mm
2
Cu
MS
Main switch
AH
Auxiliary heater
N
Neutral
B1
Water inlet temperature probe (NTC)
Q1
Auxiliary heater 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)
Q4
Pump magneto-thermal protector (TC units)
C2, C3
Fan condenser
R00
Remote ON / OFF switch
F1
Electronic control protection fuse / 24 V [315 mA
SLOW] switching
RCH
Remote COOL / HEAT switch
F2
Fan speed controller fuse
T
Transformer 230 / 24V 20 VA
FC
Phase control
V4V, G
4-way valves (on YLHA only)
FS
Water flow switch (TC units)
Electric circuit diagrams
2
Electric circuit diagram YLCA/YLHA PLUS 12 and 15 TC and T (400.3.50)
2.4
45
Summary of Contents for Ylca 12
Page 4: ...1 Installation manual...
Page 40: ...2 Electric circuit diagrams...