York YLAA0170 User Manual

JOHNSON CONTROLS
147
SECTION 7 – UNIT CONTROLS
FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
7
TABLE 17 - PROGRAM KEY LIMITS AND DEFAULT
PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT
DISCHARGE PRESSURE CUTOUT —
325 psig 575 psig 570 psig
22.40 barg 39.60 barg 39.30 barg
SUCTION PRESSURE CUTOUT
WATER COOLING
80 psig 120 psig 80 psig
5.52 barg 8.27 barg 5.52 barg
GLYCOL COOLING
33 psig 120 psig 44 psig
2.28 barg 8.27 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
0.0°F 60.0°F 25.0°F
-17.8°C 15.6°C -3.9°C
VSD FAN
-10.0°F 60.0°F 25.0°F
-23.3°C 15.6°C -3.9°C
ALL OTHER CONFIGURATIONS
0.0°F 60.0°F 25.0°F
-17.8°C 15.6°C -3.9°C
LEAVING CHILLED LIQUID
TEMP. CUTOUT
WATER COOLING — —
36°F
2.2°C
GLYCOL COOLING
8.0°F 36.0°F 36.0°F
-13.3°C 2.2°C 2.2°C
LOW TEMPERATURE
GLYCOL COOLING
-1.0°F 36.0°F 36.0°F
-18.3°C 2.2°C 2.2°C
ANTI-RECYCLE TIMER — 300 s 600 s 600 s
FAN CONTROL ON PRESSURE —
360 psig 485 psig 385 psig
24.80 barg 33.40 barg 26.50 barg
FAN DIFFERENTIAL OFF PRESSURE —
80 psid 160 psid* 125 psid
5.51 bard 11.03 bard* 8.62 bard
TOTAL NUMBER OF COMPRESSORS
SINGLE SYSTEM 2 3 3
DUAL SYSTEM 4 6 6
NUMBER OF FANS PER SYSTEM — 2 4 3
UNIT/SYSTEM TRIP VOLTS CURRENT FEEDBACK 0.5 V 4.5 V 2.5 V
REMOTE UNIT ID — 0 7 0
SYSTEM 1 AND SYSTEM 2
SUPERHEAT SETPOINTS
R-410a
5.0°F 18.0°F 9.0°F
2.8°C 10.0°C 5.0°C
DUTY/STANDBY PUMP CHANGE OVER R-410a 1 30 30
ANTI-VACUUM SUCTION PRESSURE
CUTOUT
R-410a
3 psig 20 psig
10%
programmed
suction cutout
0.21 barg 1.38 barg
ANTI-VACUUM DELAY TIME R-410a 3 s 30 s 6 s
VSD FAN LOW PRESSURE LIMIT R-410a
247 psig 345 psig 247 psig
17.03 barg 23.78 barg 17.03 barg
VSD FAN HIGH PRESSURE LIMIT R-410a
350 psig 450 psig 450 psig
24.13 barg 31.03 barg 31.03 barg
VSD FAN LOW AMBIENT
DISCHARGE PRESSURE SETPOINT
R-410a
360 psig 420 psig 390 psig
24.82 barg 28.96 barg 26.89 barg
VSD FAN LOW AMBIENT DISCHARGE
PRESSURE CONTROL RANGE
R-410a
60 psig 120 psig 90 psig
4.14 barg 8.27 barg 6.21 barg
* The minimum discharge pressure allowed is 235 psig. The Fan Di󰀨erential O󰀨 Pressure High Limit will be lowered (reduced) to prevent go-
ing below 235 psig based on where the fan control On Pressure is programmed.

York YLAA0170 Specifications

General

Brand	York
Model	YLAA0170
Category	Chiller
Language	English