3
14.2.
Selecting the display language _______________________________________________________________________________________________ 35
14.3.
Setting the clock (RTC) ______________________________________________________________________________________________________ 35
14.4.
Setting the time programmes ________________________________________________________________________________________________ 36
14.5.
Ventilation and CO₂ management setpoint adjustment _________________________________________________________________________ 38
14.6.
Setting the temperature setpoints ____________________________________________________________________________________________ 40
14.7.
Setting the night cooling function ____________________________________________________________________________________________ 40
14.8.
Setting the fire function _____________________________________________________________________________________________________ 41
14.9. MODBUS RTU communication (RS485) ______________________________________________________________________________________ 42
14.10.
BACnet MS-TP communication (RS485) ______________________________________________________________________________________ 42
14.11.
MODBUS TCP communication _______________________________________________________________________________________________ 43
14.12.
BACnet IP communication ___________________________________________________________________________________________________ 43
15.
Backup / restore settings ____________________________________________________________________________________________________ 44
15.1.
User settings _______________________________________________________________________________________________________________ 44
15.2.
Factory settings ____________________________________________________________________________________________________________ 44
16.
Troubleshooting – maintenance ______________________________________________________________________________________________ 45
16.1.
Supply air filter pressure switch (fresh air) DEPFS _____________________________________________________________________________ 45
16.1.1.
Setting the tare _____________________________________________________________________________________________________________ 45
16.1.2. Electrical connections _______________________________________________________________________________________________________ 45
16.1.3. Air connections _____________________________________________________________________________________________________________ 45
16.2.
DEPS and DEPR fan runback pressure switches _______________________________________________________________________________ 46
16.2.1. Setting the tare _____________________________________________________________________________________________________________ 46
16.2.2. Electrical connections _______________________________________________________________________________________________________ 46
16.2.3. Pressure switch _____________________________________________________________________________________________________________ 47
16.3.
Temperature sensors PT1000 ________________________________________________________________________________________________ 48
17.
CO₂ concentration sensor ___________________________________________________________________________________________________ 49
17.1.
Electric heating coil (BE) ____________________________________________________________________________________________________ 50
17.2.
Defrost coil (DBE) ___________________________________________________________________________________________________________ 50
17.3.
Safety thermostats THS and THSD ___________________________________________________________________________________________ 50
17.3.1. Location ___________________________________________________________________________________________________________________ 50
17.3.2. Electrical connections _______________________________________________________________________________________________________ 50
17.3.3. Manual reset _______________________________________________________________________________________________________________ 51
17.4.
Anti-freeze protection thermostat THA (hot water coil) _________________________________________________________________________ 51
17.4.1. Location ___________________________________________________________________________________________________________________ 51
17.4.2. Nominal setting of the trip point ______________________________________________________________________________________________ 51
17.4.3. Electrical connections _______________________________________________________________________________________________________ 51
18.
General wiring diagram ______________________________________________________________________________________________________ 52
19.
Customer connections wiring diagram ________________________________________________________________________________________ 54
20.
Regular maintenance ________________________________________________________________________________________________________ 55
20.1.
General information _________________________________________________________________________________________________________ 55
21. Troubleshooting ____________________________________________________________________________________________________________ 56
21.1.
Simplified diagnostic method ________________________________________________________________________________________________ 56
21.2.
Classification of alarms _____________________________________________________________________________________________________ 56
21.3.
Alarm actions _______________________________________________________________________________________________________________ 57
21.4.
Alarm duration______________________________________________________________________________________________________________ 57
21.5.
Alarm threshold ____________________________________________________________________________________________________________ 57
21.6.
Alarm state (or status) ______________________________________________________________________________________________________ 57
21.7.
List and meaning of alarms __________________________________________________________________________________________________ 58
21.8.
Acknowledgement procedure for a class A or B alarm _________________________________________________________________________ 65
21.9.
Acknowledging the filter counter alarm ("maintenance inspection required") ____________________________________________________ 65
21.10.
Presence of active alarms ___________________________________________________________________________________________________ 65
21.11.
Alarm history _______________________________________________________________________________________________________________ 66
22.
Replacing filters ____________________________________________________________________________________________________________ 66
23.
Replacing the internal memory battery ________________________________________________________________________________________ 66
24.
Air performance ____________________________________________________________________________________________________________ 67
24.1.
Zehnder Eversky 500 _______________________________________________________________________________________________________ 67
24.2.
Zehnder Eversky 750 _______________________________________________________________________________________________________ 67
24.3.
Zehnder Eversky 900 _______________________________________________________________________________________________________ 68
24.4.
Zehnder Eversky 1100 _______________________________________________________________________________________________________ 68
25.
Variable exchange tables ____________________________________________________________________________________________________ 69
25.1.
Machine status (read only) __________________________________________________________________________________________________ 70
25.2.
Setting setpoints (reading/writing) ___________________________________________________________________________________________ 71
25.3.
Alarm status (read only) _____________________________________________________________________________________________________ 72
26.
Commissioning report _______________________________________________________________________________________________________ 73
Declaration UE of conformity _________________________________________________________________________________________________ 74
Contents
Zehnder Eversky
