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Antifreeze
Solar / opt. functions / Add new function / Antifreeze
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Frost on
Antifreeze switch-on temperature -40 … +15 °C
+4 °C
Frost off
Antifreeze switch-off temperature -39 … +16 °C
+6 °C
Collector
Collector fi eld
system dependent
system dependent
Store (1 … 4) Store succession order
system dependent
system dependent
Funct.
Activation / Deactivation
Activated, Deactivated Deactivated
The Antifreeze function activates the loading circuit between the collector and
the store when the collector temperature falls below the adjusted Antifreeze
switch-on temperature. This will protect the fl uid against freezing or coagulating.
If the Antifreeze switch-off temperature is exceeded, the solar pump will be
switched off again.
Heat will be extracted from the stores according to the adjusted order. When all
stores have reached their minimum temperature of 5 °C, the function becomes
inactive.
If the function is activated, the pump is run at its maximum relative speed.
Note:
Since this function uses the limited heat quantity of the store, the anti-
freeze function should be used in regions with few days of temperatures
around the freezing point.
Note:
In systems with east- / west collectors, 2 separate menus will be displayed.
Afterheating suppression
Solar / opt. functions / Add new function / AH suppress.
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Relay
Reference relay
system dependent
system dependent
Store
Store sensor selection
system dependent
system dependent
Tset
Set temperature
Yes, No
No
Funct.
Activation / Deactivation
Activated, Deactivated
Deactivated
The Afterheating suppression blocks the conventional backup heating of a
store that is currently in solar loading.
This function is activated if a previously selected Store is being loaded.
Solar loading means that store loading is only carried out for energy supply and not
for cooling purposes etc.
If the Tset option is activated, the backup heating will only be suppressed when the
store temperature exceeds Tset.
Summary of Contents for BW/H Komfort HE
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