Cosmo Multi 3 Montage- Und Bedienungsanleitung Seite 138

138
7. SOLAR
Pump type
Output
Valve type
Output
Pump type
The allocated output will be energised with 100 %, if the collector temperature reaches the
adjusted switch-on temperature.
If the collector temperature falls by 5 K below the adjusted collector overtemperature, the output
will be switched off. In the pump variant, the heat dump function works independently from
solar loading.
Valve type
If the collector temperature reaches the value [TCol. - DTValve], the allocated output will be
switched on in order to open the valve. If the collector temperature reaches the collector over-
temperature, the solar pump will be activated. If the collector temperature falls by 5 K below the
adjusted collector overtemperature, the solar pump will be switched off again. If the collector
temperature falls by 10 K below the switch-on temperature, the valve will be put into its initial
position.
If one of the store temperatures exceeds its store maximum temperature by more than 10 K
while the heat dump function is active, the function will be deactivated and an error message
will appear. If the temperature falls below this value by the hysteresis (Solar / Basic setting /
Store), the heat dump function will be released again.
NOTE:
The switch-on collector temperature must be adjusted at least by 10 K lower than the
emergency switch-off temperature.
Flow rate monitoring
Solar / Opt. functions / Add new function / Flow rate mon.
Adjustment
Description
channel
Sensor Flow rate sensor selection
Ref. relay Reference relay selection
Store Store selection
Time Delay time
Funct. Activation / Deactivation
Sensor Switch input selection
This function can be used to detect malfunctions that impede the flow rate and to switch off the
corresponding output. This will prevent system damage, e.g. through a dry run of the pump.
If the flow rate monitoring function is activated, an error message will appear when no flow rate
is detected at the allocated flow rate sensor after the delay time has elapsed.
• If a reference relay has been selected, the flow rate monitoring function will become active
when the allocated relay switches on. In case of an error, the complete solar system will be
shut down.
• If both a store and a reference relay have been selected, the flow rate monitoring function
will become active when the allocated relay switches on. In case of an error, the allocated
store will be blocked until the error message has been acknowledged. The next store free for
loading will be loaded instead.
The error message will appear both in the Status / Messages menu and in the Status /
Solar / Flow rate mon. menu.
Adjustment range
Factory setting
/ selection
system dependent -
system dependent -
system dependent 1
1 ... 300 s 30 s
Activated, Deactivat- Activated
ed, Switch
- -