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4.11 Commission Unit
Setpoint/Sub-Menu
Default
Range
Description
Save Settings
Save current settings
Software Update
.
Submenu for software updating
Alarms Limits
-
Submenu for alarm limits definition
Calibrate Sensors
-
Submenus for Unit and Circuit sensor calibration
Manual Control
-
Submenus for Unit and Circuit manual control
Input/Output
-
Submenus for Unit and Circuit Input/Output
Scheduled Maintenance
-
Submenu for scheduled maintenance
Alarm Limits
This page contains all alarm limits, including low pressure alarm prevention thresholds. In order to ensure proper operation
they have to be set manually according to the specific application.
Setpoint/Sub-Menu
Default
Range
Description
Low Press Hold
200.0kPa
170.0
…310.0
kPa
Low pressure safety limit to stop capacity increase (R134a)
Low Press Unld
190.0kPa
170.0
…250.0
kPa
Low pressure alarm prevention (R134a)
Low Press Hold
122.0kPa
-
27.0…204.0
kPa
Low pressure safety limit to stop capacity increase (VZ with R1234ze)
Low Press Unld
114.0kPa
-
27.0…159.0
kPa
Low pressure alarm prevention (VZ with R1234ze)
Low Press Hold
NA
-
27.0… 310.0
Low pressure safety limit to stop capacity increase (TZ with R1234ze)
Low Press Unld
NA
-
27.0… 310.0
Low pressure alarm prevention (TZ with R1234ze)
Evap Water Frz
2.2°C
2.0…6.0°C
Evaporator Water Freeze Limit
Cond Water Frz
2.2°C
2.0…6.0°C
Condenser Water Freeze Limit
Flow Proof Time
15s
5…15s
Flow proof delay
Water Rec Timeout
3min
1…10min
Recirculating timeout before the alarm is raised
Low DSH Limit
12.0°C
Minimum acceptable discharge superheat
Calibrate Sensors
Setpoint/Sub-Menu
Default
Range
Description
Unit
-
Submenu for Unit calibrate sensor
Compressor 1
-
Submenu for Compressor 1 calibrate sensor
Compressor 2
-
Submenu for Compressor 2 calibrate sensor
4.11.2.1 Unit Calibrate Sensors
This page allows a proper calibration of the unit sensors
Setpoint/Sub-Menu
Default
Range
Description
Evap LWT
7.0°C
Evaporator LWT current reading (includes the offset)
Evp LWT Offset
0.0°C
Evaporator LWT calibration
Evap EWT
12.0°C
Evaporator EWT current reading (includes the offset)
Evp EWT Offset
0.0°C
Evaporator EWT calibration
Cond LWT
7.0°C
Condenser LWT current reading (includes the offset)
Cnd LWT Offset
0.0°C
Condenser LWT calibration
Cond EWT
12.0°C
Condenser EWT current reading (includes the offset)
Cnd EWT Offset
0.0°C
Condenser EWT calibration
Liquid Temp
12.0°C
Condenser EWT current reading (includes the offset)
Liquid T Offset
0.0°C
Condenser EWT calibration
Common LWT
8°C
Common LWT current reading Includes the offset
Comm LWT Offset
0.0°C
Common LWT calibration
