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Operating Instructions
µC3 Control, YLCA/YLHA 100,
120 and 150
This is a specially programmed controller for
Digital inputs
ID1 - J1/8
General protection (PG)
ID2 - J1/1
Flow switch (FS)
ID3 - J1/9
Remote ON/OFF (ROO)
ID4 - J1/2
ID5 -J1/10
ID5 - J1/10
Low pressure switch circuit 1 (LP1)
ID6 - J4/8
High pressure switch circuit 1 (HP1)
ID7 - J4/1
Thermal protector compressor 1 (THPC1)
ID8 - J4/9
Thermal protector compressor 2 (THPC2)
ID9 - J4/2
Thermal protector circuit 1 fans (THPF 1-2)
ID10 - J4/10
Low pressure switch circuit 2 (LP2)
ID11 - J7/6
High pressure switch circuit 2 (HP2)
ID12 - J7/1
Thermal protector compressor 3 (THPC3)
ID13 - J7/8
Thermal protector compressor 4 (THPC 4)
ID14 - J7/3
Thermal protector circuit 2 fans (THPF 3-4)
ID15 - J7/9
Remote COOL/HEAT (RCH)
ID18 - J7/5
Pump 2 protector (Q6)
Digital outputs
N01/C1-2
Compressor 1 circuit 1 (K1)
N02/C1-2
Compressor 2 circuit 1 (K2)
N05/C5
Pump 1
N06/C6-7
Compressor 3 circuit 2 (K3)
N07/C6-7
Compressor 4 circuit 2 (K4)
N08/C8-9
Pump 2
N010/C10
Alarm
N011/C11-12
Antifreeze heater circuit 1-2
N012/C11-12
Backup heater
N013/C13-14
4-way valve circuit 1 (V4V1)
N014/C13-14
4-way valve circuit 2 (V4V2)
Analogical inputs
B3 - J2
Coil pressure, circuit 1
B4 - J3
Coil pressure, circuit 2
B5 - J4/13
Water temperature at exchanger intake
B6 - J4/12
Water temperature at exchanger outlet
Analogical outputs
Y3
Fan speed control, circuit 1 (PWM)
Y4
Fan speed control, circuit 2 (PWM)
18
air-water chillers and heat pumps with four
capacity stages. These are divided into two
independent cooling circuits equipped with
two tandems that act upon a common water
GB
circuit. Both systems are equipped with two
fans each, the speed of which is controlled
by pressure sensors. This control operates
through the following intakes and outlets.
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