112
(Z1)
EN/06.2019/G57 © STULZ GmbH – all rights reserved
C7000 INSTRUCTIONS fOR a/C UNITS
Emergency operation
With the parameter in the second line of menu Z1 you can enable an
emergency operation. If this parameter is set "0", emergency oper-
ation is disabled. By this parameter you set the number of defec-
tive units in this zone which are necessary to enable emergency
operation.
Emergency operation means that each A/C unit of the IO bus applies
the zone-specific emergency temperature as new temperature set
value. The emergency temperature is set for each zone with the
parameter in the third line of menu Z1.
Function of standby units
Even if the failing unit capacity of one zone is completely equalled by
the start of standby units, the defective units are counted as lacking.
To start an emergency operation just when the 100% unit capacity
(without standby units) is not reached anymore, the adjusted num-
ber of defective units should be higher than the number of a zone's
standby units.
Additional capacity - Cooling (previously: Temperature)
You can have started a standby unit if the air temperature setpoint is
exceeded by the zone temperature (Average value or unit tempera-
ture, when average value determination is disabled).
As the treshold („overloadstart“) for the additional capacity is indi-
vidually set in each A/C unit, this function is essentially appropriate
for N+1 operation. Otherwise, it may happen that several units are
started simultaneously (at the same threshold value).
The excess of the setpoint can be adjusted by the parameter in the
third line of menu T in the shape of a temperature difference. Setting
"0" disables the additional capacity function.
When the temperature sinks again, the additional capacity unit is
switched off with a hysteresis of 1K.
load cool 2.5
Command:
Config/values/air/tempera-
ture (T)
To Next Page
Loading...
