Cosmo Multi 3 Montage- Und Bedienungsanleitung Seite 133

7. SOLAR
NOTE:
The heat exchanger is protected by a non-adjustable antifreeze function. Still, using a
bypass is recommended.
The heat exchanger is protected by a non-adjustable antifreeze function. If the temperature at
the heat exchanger sensor falls below the antifreeze temperature (10 °C), the controller will
activate the secondary pump at 100 % speed. The antifreeze function will use heat from the
store with the highest temperature. When all stores have reached 10 °C, the secondary pump
will be switched off. If the temperature at the reference sensor exceeds the antifreeze tempera-
ture by 2 K, the secondary pump will be switched off.
The heat exchanger antifreeze function works independently from solar loading.
NOTE:
Because of the special hydraulics in systems with 2 or 3 collector fields, the target tem-
perature option will not work properly there.
Tube collector function
Solar / Opt. functions / Add new function / Tube collector
Adjustment
Description
channel
Start Start time frame
Stop Stop time frame
Run Pump runtime
Break Standstill interval
Collector Collector field
Stmax off Switch-on suppression
Funct. Activation / Deactivation
Sensor Switch input selection
This function is used for improving the switch-on behaviour in systems with non-ideal sensor
positions (e.g. with some tube collectors).
This function operates within an adjusted time frame. It activates the collector circuit pump for
an adjustable runtime between adjustable standstill intervals in order to compensate for the
delayed temperature measurement.
If the runtime is set to more than 10 s, the pump will run at 100 % for the first 10 s of the runtime.
For the remaining runtime, the pump will run at the adjusted minimum speed.
If the collector sensor is defective or the collector is blocked, this function is suppressed or
switched off.
If the Stmax off option is activated and all stores have exceeded their respective maximum
temperature, the tube collector function will be suppressed.
2- and 3-collector systems
In systems with 2 or 3 collector fields, the tube collector function will be available for each indi-
vidual collector field.
The tube collector function will remain inactive for a collector field which is used for solar load-
ing.
Adjustment range /
Factory setting
selection
00:00 ... 23:00 08:00
00:30 ... 23:30 19:00
5 ... 600 s 30 s
1 ... 60 min 30 min
system dependent system dependent
Yes, No Yes
Activated, Deactivated, Activated
Switch
- -
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