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Air and Water cooled inverter chillers and heat pump
EWAD TZ - EWAD TZ B - EWWD VZ
Air and Water cooled inverter chillers
and heat pump
D-EOMZC00105-17EN
Operation Manual
33/84
Low DSH Limit=
12.0°C
12.0°C
Minimum acceptable discharge superheat
Gas Conc Lim=
200ppm
200ppm
Maximum gas concentration limit
HP Sw Test C#1
Off
Off
On, Off. Enables to check operation of the high pressure switch on
#1.
HP Sw Test C#2
Off
Off
On, Off. Enables to check operation of the high pressure switch on
#2.
Ext Fault Cfg=
Event
N/A
Event, Alarm
Definition of the unit behavior after switching of external alarm
contact
The HP Sw Test shuts off all fans while compressor is running in order to raise condenser pressure until tripping
of the high pressure switches. Beware that in case of high pressure switch failure the safety valves will trip and
hot refrigerant will be ejected at high pressure!
Once tripped, the software will get back to normal operation. However, the alarm will not be reset until the high
pressure switches are manually reset through the button included in the switch.
4.12.2 Calibrate Sensors
Setpoint/Sub-Menu
Default
Range
Description
Unit
-
Submenu for Unit calibrate sensor
Circuit #1
-
Submenu for Circuit 1 calibrate sensor
Circuit #2
-
Submenu for Circuit 2 calibrate sensor
4.12.2.1 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
Outside Air=
35.0°C
Outside Air Temperature current reading (includes the offset)
OAT Offset=
0.0°C
Outside Air Temperature calibration
HR Ewt=
40.0°C
Heat Recovery EWT current reading (includes the offset)
HR Ewt Offset=
0.0°C
Heat Recovery EWT calibration
HR Lwt=
45.0°C
Heat Recovery LWT current reading (includes the offset)
HR Ewt Offset=
0.0°C
Heat Recovery LWT calibration
Switch Box T
40.0°C
Switch Box Temperature current reading (includes the offset)
HR Ewt Offset=
0.0°C
Switch Box Temperature calibration
Common LWT
8°C
Common LWT current reading Includes the offset
Comm LWT Offset=
0.0°C
Common LWT calibration
4.12.2.2 Circuit Calibrate Sensors
This page allows to adjust the sensors and transducers readings.