Quantech QCC2015CEE, Installation, Operation And Maintenance Manual, Page: 125 / 172

QUANTECH
125
SECTION 7 – UNIT CONTROLS
Form QCC2-NM1
Issue Date: 5/20/2021
7
Table 12 - Cooling Setpoints Programmable Limits and Defaults
SETPOINT VALUE LOW LIMIT HIGH LIMIT DEFAULT
Discharge Air Temp. Setpoint
45.0°F 70.0°F 55.0°F
7.2°C 21.1°C 12.7°C
Discharge Air Temp. Range
3.0°F 10.0°F 5.0°F
1.7°C 5.6°C 2.8°C
Suction Pressure Setpoints
102 psig 155 psig 122 psig
7.03 Bars 10.7 Bars 8.4 Bars
Suction Pressure Range
3 psig 16 psig 5 psig
0.21 Bars 1.1 Bars 0.34 Bars
Max EMS - PWM Remote Temp. Reset
2°F 40°F 20°F
1°C 22°C 11°C
Table 13 - 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
80.0 psig 120.0 psig 80.0 psig
5.52 BARG 8.27 BARG 5.52 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
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 --
80 psig 160 PSID* 125 PSID
5.51 BARG 11.03 BARG* 8.0 BARG
Total Number Of Compressors
SINGLE SYSTEM 2 3 3
TWO SYSTEMS 4 6 6
Number Of Fans Per System 3 4 3
Unit/System Trip Volts
CURRENT FEEDBACK
OPTION ENABLED
ONE PER UNIT
0.5 V 4.5 V 2 V
Remote Unit Id -- 0 7 0
* The minimum discharge pressure allowed is 160 psig. The fan differential Off Pressure will be lowered to prevent going below 235 psig
based on where the fan control On Pressure is programmed.