JOHNSON CONTROLS
122
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
SECTION 7 - UNIT CONTROLS
* The minimum discharge pressure allowed is 160 psig. The fan differential Off Pressure will be lowered to prevent going below
160 psig based on where the fan control On Pressure is programmed.
TABLE 16 – PROGRAM KEY LIMITS AND DEFAULTS
PROGRAM VALUE
MODE
LOW LIMIT
HIGH LIMIT
DEFAULT
DISCHARGE PRESSURE CUTOUT
—
325 psig
575 psig
570 psig
22.4 barg
39.6 barg
39.3 barg
SUCTION PRESSURE CUTOUT
WATER COOLING
80.0 psig
120 psig
80.0 psig
5.52 barg
8.27 barg
5.52 barg
GLYCOL COOLING
42.0 psig
70.0 psig
44.0 psig
2.9 barg
4.83 BARG
3.03 BARG
LOW AMBIENT TEMP, CUTOUT
STANDARD
AMBIENT
25.0°F
60.0°F
25.0°F
-3.9°C
15.6°C
-3.9°C
LOW AMBIENT
0°F
60.0°F
25.0°F
-17.8°C
15.6°C
-3.9°C
LEAVING CHILLED LIQUID TEMP
CUTOUT
WATER COOLING
—
—
36.0°F
2.2°C
GLYCOL COOLING
8.0°F
36.0°F
36.0°F
-13.3°C
2.2°C
2.2°C
ANTI-RECYCLE TIMER
—
300 SEC.
600 SEC.
600 SEC.
FAN CONTROL ON PRESSURE
—
360 psig
485 psig
385 psig
24.8 barg
33.4 barg
26.5 barg
FAN DIFFERENTIAL OFF PRESSURE
—
50 psid
100 psid*
80 psid
3.45 bard
6.89 bard*
5.52 bard
TOTAL NUMBER OF COMPRESSOR
SINGLE SYSTEM
2
3
3
TWO SYSTEM
4
6
6
UNIT/SYSTEM TRIP VOLTS
CURRENT
FEEDBACK
OPTION ENABLED.
ONE PER UNIT
0.5
4.5
2
REMOTE UNIT ID
—
0
7
0
SYSTEM 1 SUPERHEAT SETPOINT
EEV
10.0°F
15.0°F
12.0°F
5.5°C
8.3°C
6.6°C
SYSTEM 2 SUPERHEAT SETPOINT
EEV
10.0°F
15.0°F
12.0°F
5.5°C
8.3°C
6.6°C
Содержание YCAL Series
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