36
Pressure sensors (B3 and B4)
One for each cooling circuit, and connected to the coil sumps.
These provide information to the system for fan speed control
in the summer and winter cycles, management of defrosts on
heat pumps, and system high pressure prevent and lockout
functions.
NTC probes (B5 and B6)
B5 - Detect and control entering water temperature (cool only
and heat pump units).
B6 - Detect and control leaving water temperature.
These probes provide all information necessary for antifreeze
protection and control of antifreeze and backup heaters. If
necessary, they enable controlling the temperature of the
water leaving the exchanger.
Commissioning
The Start screen appears about 45 seconds after connecting
the power supply. Default language: English.
1st screen. Start
(water temperature/unit status)
- Entering water temperature.
- Leaving water temperature.
- Unit status (
ON/OFF
).
Press
“Down”
to access the second screen.
2nd screen. Selection of status and operating mode
Selection of
ON/OFF
status (
Enter, Up and Down keys
).
On heat pump units, select the
Cool/Heat
operating mode
(by means of
"Enter", "Up" and "Down"
).
To go back to the 1st screen, press
Esc
.
System configuration
(for authorized servicing personnel
only)
3rd screen. Insert password
The 3rd screen,
Insert password
, is accessed by pressing
“Up”
on screen 1 (Start), or
“Down”
on screen 2 (Selection
of status/operating mode).
- From the
Insert password
screen, press
Enter
.
- Enter the
password
by means of the
Up
key.
- Press
Enter
to access the 4th screen,
Menu
.
4th screen. Menu
This screen gives access to an range of submenus that allow
obtaining information concerning the unit or setting the oper-
ating parameters of same. These submenus are as follows:
-/-
Probe configuration
-A-
Antifreeze
-B-
Input/output
-c-
Compressor configuration
-d-
Defrost
-F-
Condensation
(fans)
-H-
Unit configuration
-P-
Alarm settings
-r-
Temperature
(param.)
control
-Fr-
Software version/language selection
-t-
Time configuration
(not available)
To enter a submenu, press the
Up
or
Down
key to select,
and then
Enter
.
Once the desired parameters have been changed by press-
ing the
Enter, Up
and
Down
keys, press
Prg
to confirm these
modifications and go back to the Menu screen.
To exit the Menu screen, press
Esc
.
-/- Configuration of the probes
DESCRIPTION
RANGE
UNIT.
VALUE
Probe B3 calib.
Coil pressure, circuit 1
-9.9 / 9.9
bar
0
Probe B4 calib.
Coil pressure, circuit 2
-9.9 / 9.9
bar
0
Probe B5 calib.
Entering water temp., exchanger
-9.9 / 9.9
°K
0
Probe B6 calib.
Leaving water temp, exchanger
-9.9 / 9.9
°K
0
Probe B7 calib.
Outdoor temp.
-9.9 / 9.9
°K
0
Probe B8 calib.
Dynamic set point
-9.9 / 9.9
%
0
Probe B1 enable
Y/N
-
N
Probe B2 enable
Y/N
-
N
Probe B3 enable
Coil pressure, circuit 1
Y/N
-
Y
Probe B4 enable
Coil pressure, circuit 2
Y/N
-
Y
Probe B5 enable
Entering water temp., exchanger
Y/N
-
Y
Probe B6 enable
Leaving water temp., exchanger
Y/N
-
Y
Probe B7 enable
Y/N
-
N
Probe B8 enable
Y/N
-
N
Probe B9 enable
Y/N
-
N
Probe B10 enable
Y/N
-
N
Probe B3 config.
Minimum value
-30/150
bar
1
Probe B3 config.
Maximum value
-30/150
bar
46
Probe B4 config.
Minimum value
-30/150
bar
1
Probe B4 config.
Maximum value
-30/150
bar
46
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 ...