AERMEC Multichiller-Evo - Fixed Threshold Logic Settings; Installer - Thresholds & Timings: Optimisation Logic Settings

28
INSTALLER - Thresholds and ming - Fixed threshold logic sengs
A
B
D

Index Meaning
1
Indicates the power threshold that the currently active chiller (or the average of the same, if there is
more than one active chiller) must reach, and maintain for a certain time, for the Multichiller-Evo to
decide to switch-on an additional chiller to provide for the system’s power demand;
2
Indicates the power threshold that the currently active chiller (or the average of the same, if there is
more than one active chiller) must reach, and maintain for a certain time, for the Multichiller-Evo to
decide to switch-o a chiller as the power demand is met;
3
Indicates the time for which the system’s power demand should remain above the value expressed
on “Partialisation ON %” to enable the ignition command of an additional chiller;
4
Indicates the time for which the system’s power demand should remain below the value expressed
on “Partialisation OFF %” to enable the switch-o command of an additional chiller;
5
If all chillers are forced to O by the direct command on the Multichiller-Evo (page 14), the switch-
os will be delayed from one another of the time specied in this parameter;
ACTIONS
AVAILABLE:
1
A C D
2
3
4


E
F
G
H


E
F



5
I
B
C

G



H



INSTALLER - Thresholds and ming - Opmisaon logic sengs
A
B
D

Index Meaning
1
Indicates the functioning time after which to sample the average of the current power required from
the chillers (calculated in percentage); in order to initiate the optimisation algorithm, this value must
be maintained (possibly deviate of a percentage value of “stable system power %”) for a minimum
time called “Stable power demand interval”;
2
Indicates the minimum duration of the system’s power demand to be considered stable and run the
optimisation algorithm;
3
Indicates the percentage to be added or subtracted from the value sampled at the beginning of the
control to establish the power demand;
4
Indicates the minimum energy gain percentage in order to make eective the chiller conguration
change possibly proposed by the optimisation algorithm
ACTIONS
AVAILABLE:
1
A C D
2
3
4


E
F
G
H


E
F
    

B
C

G

       

H



I

