Stulz C7000 - Page 53

53
0: GE
1: CW
2: DX
© STULZ GmbH – all rights reserved EN/06.2019/G57
C7000 INSTRUCTIONS fOR a/C UNITS
The corresponding commands:
Values
Misc. data/more
The cooling priority determines the overriding cooling circuit for units with two
different cooling systems (Dual-Fluid units). The parameters GE, CW and DX
can be adjusted.
GE - no priority, this is the adjustment for GE-systems, where a mixed operati-
on of both systems is possible.
CW - means, that chilled water cooling is prior at ACW/GCW-units.
DX - means, that compressor cooling is prior at ACW/GCW-units.
The diagram below displays the conditions for a malfunction change-over at
Dual-Fluid units.
For a better understanding:
The OR-conditions are horizontally located.
The AND-conditions are vertically located.
Malfunction change-over
CW → DX (cooling priority 1)
Malfunction change-over
DX → CW (cooling priority 2)
"WT too high"
alarm
CW-off = 1
CW-off = 0
LP-alarm 1
Compressor
failure 1*
*HP-alarm or
compressor failure
LP-alarm 2
Compressor
failure 2*
WT - water temperature 1
CW-off - digital input (pre-set DIN16) to
enable DX-operation or to disable
CW-operation
OR
AND
OR
AND
OR
Switching back to the original priority can only be done by an alarm reset.
coolingprio 1
Config