Technibel GR451R, Технические данные и руководство по обслуживанию

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7-7 Protection Operations in Heat Mode
7-7-1 Outdoor Coil Deice Protection
The deice process is controlled by an Ice Detection Algorithm (IDA). The IDA is an unique control
algorithm incorporated to maintain optimal utilization of the heat pump capacity, especially in below-zero
outdoor temperature condition. The out-coil deicing will be activated not only by static temperature
detection as normally done, but also while ice forming is detected on the out-coil.
COMP to ON
DI = 40 (or 10)
DT = 5
Activate DDt setting
Routine
Start counting TLD
DTF = 0
OCT < DOC ?
DTF=1
&
OCT < DDT
(during last 3 minutes)
&
ICT < 40 deg
Deicer activation
(see Notes)
TLD > DI
&
OCT < DST
(during last 3 minutes)
Deicer activation
(see Notes)
LDT > DT + TimeD
LDT < DT-TimeD
or
LDT < DTmin
DI = TLD - DIT DI = TLD + DIT DI = TLD
Yes
Yes
DI < DImin
DI > DImax
DI = DImax
DI = DImin
DT = LDT
1
1
No No
Yes
Yes Yes
No No
Yes
Yes
No
No
DDT and DTF information from Deicing
Dynamic Threshold setting routine
No
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