
33
The system is comprised of the following basic compo-
nents:
- Keyboard-display
-
µ
C3 controller
- Fan speed controllers (FSC1 and FSC2)
- Pressure sensors (B3 and B4)
- NTC probes (B5 and B6)
Keyboard-display
A display screen and six keys with the following functions:
Alarm
.
Prg (Programming)
,
Esc (Escape)
,
Up,
Enter
and
Down
. This display allows selecting the ON/OFF and COOL/
HEAT, as well as reading the status of the unit, accessing
configuration menus (by means of a
password
), reading
alarm messages, resetting said alarms, reading operating
pressures and temperature, etc.
µ
C3 controller
Contains unit
software
and the entire digital and analogical
input and output connectors system. This module is also
equipped with connectors for the program upload key and
for communication connection in series with a RS485 moni-
toring system.
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Summary of Contents for YCSA 120 T
Page 2: ......
Page 4: ......
Page 23: ...23 Minimum technical clearance ...
Page 24: ...24 Wiring diagram YCSA YCSA H 120 µC3 400 3 50 ...
Page 26: ...26 Wiring diagram YCSA YCSA H 120 µC3 400 3 50 ...
Page 27: ...27 Wiring diagram YCSA YCSA H 150 µC3 400 3 50 ...
Page 29: ...29 Wiring diagram YCSA YCSA H 150 µC3 400 3 50 ...
Page 30: ...30 Wiring YCSA YCSA H 120 and 150 T TP ...
Page 35: ...35 General wiring diagram ...
Page 48: ...www johnsoncontrols com ...