28
IOM 1206-1
Unit Controller Operation
Circuit Setpoints
(exist individually for each circuit):
Note:
Condenser Target 50% will be available only when Number of Compressors is 4.
Description
Default
Range
Mode/Enabling
Circuit mode
Enable
Disable, Enable, Test
Compressor 1 Enable
Enable
Enable, Disable
Compressor 2 Enable
Enable
Enable, Disable
Compressor 3 Enable
Enable
Enable, Disable
Network Compressor 1 Enable
Enable
Enable, Disable
Network Compressor 2 Enable
Enable
Enable, Disable
Network Compressor 3 Enable
Enable
Enable, Disable
EXV control
Auto
Auto, manual
EXV position
See Special Setpoints
0% to 100%
Suction SH Target
5.56°C (10
°F)
4.44 to 6.67 °C (8 to 12 °F)
Max Evap Pressure
1076 KPA(156.1 PSI)
979 to 1172 KPA (142 to 170 PSI)
Condenser
Condenser Target 100%
37.8°C (100°F)
32.22 to 48.9 °C (90 to 120 °F)
Condenser Target 67%
32.2°C (90°F)
32.22 to 48.9 °C (90 to 120 °F)
Condenser Target 50%
32.2°C (90°F)
29.44 to 43.3 °C (85 to 110 °F)
Condenser Target 33%
29.4°C (85°F)
29.44 to 43.3 °C (85 to 110 °F)
VFD Max Speed
100%
90 to 110%
VFD Min Speed
25%
25 to 60%
Fan Stage Up Deadband 1
8.33°C (15°F)
8.33 to 13.89 °C (15 to 25 °F)
Fan Stage Up Deadband 2
5.56°C (10°F)
5.56 to 8.33 °C (10 to 15 °F)
Fan Stage Up Deadband 3
5.56°C (10°F)
5.56 to 8.33 °C (10 to 15 °F)
Fan Stage Up Deadband 4
5.56°C (10°F)
5.56 to 8.33 °C (10 to 15 °F)
Fan Stage Down Deadband 1
11.11°C (20°F)
8.33 to11.11 °C (15 to 20 °F)
Fan Stage Down Deadband 2
11.11°C (20°F)
8.33 to11.11 °C (15 to 20 °F)
Fan Stage Down Deadband 3
8.33 °C (15 °F)
5.56 to 8.33 °C (10 to 15 °F)
Fan Stage Down Deadband 4
5.56 °C (10 °F)
3.33 to 5.56 °C (6 to 10 °F)
Sensor Offsets
Evap pressure offset
0 KPA (0 PSI)
-100 to 100 KPA (-14.5 to 14.5 PSI)
Cond pressure offset
0 KPA (0 PSI)
-100 to 100 KPA (-14.5 to 14.5 PSI)
Suction temp offset
0°C (0°F)
-5.0 to 5.0 °C (-9.0 to 9.0 °F)
