Factory Setting - Cosmo Multi 3 Montage- Und Bedienungsanleitung

7. SOLAR
Collector emergency shutdown
When the collector temperature exceeds the adjusted collector emergency temperature, the
corresponding pump switches off in order to protect the system components against overheat-
ing. A hysteresis of 10 K is set for the collector emergency temperature.
Store (1 / 2 / 3 / 4)
Solar / Basic setting / Store (1 / 2 / 3 / 4)
Adjustment
Description
channel
Switch-on temperature
DTOn
difference
Switch-off temperature
DTOff
difference
Set temperature difference
DTSet
Stset Set store temperature
Stmax Maximum store temperature
Priority Store priority
HysSt Hysteresis set and maximum
store temperature
Rise Rise value
tMin Minimum runtime
Min. speed Minimum speed
Store Blocked for solar loading
Sensor Switch input selection
In systems with 2 or more stores, the corresponding number of separate menu items (Store 1
to Store 4) is displayed instead of Store.
For each store, an individual DT control, a set and a maximum temperature, the priority (in
multi-store systems), a hysteresis, a rise value, a minimum runtime and a minimum pump speed
can be adjusted.
The DT control works as a standard differential control. If the temperature difference reaches or
exceeds the switch-on temperature difference, the corresponding pump switches on. When the
temperature difference reaches or falls below the adjusted switch-off temperature difference,
the corresponding output switches off.
NOTE:
The switch-on temperature difference must be at least 0.5 K higher than the switch-off
temperature difference.
In multi-store-systems with differing set store / maximum store temperatures, all stores are
first loaded up to their set store temperatures, then up to their maximum store temperatures
(according to their priority and the store sequence control). If one of the stores does not
reach its set temperature, e.g. because the temperature difference is not sufficiently high, the
subsequent store will be loaded past its set temperature up to its maximum temperature, if the
switch-on condition is fulfilled (does not apply if successive loading has been selected).
The store number refers to the corresponding store sensor, not to the priority of the store. In the
Priority channel, the corresponding store number is suggested as factory setting, but may be
changed at will.
If stores have been adjusted to identical values, they are loaded in parallel.
The store numbers refer to the sensors as follows:
Store 1 = Sensor S2
Store 2 = Sensor S4
Store 3 = Sensor S5
Store 4 = Sensor S6 or S7
Each loading process will be carried out for the duration of the minimum runtime at least, re-
gardless of the switch-off condition.
NOTE:
In order to prevent system damage, the controller is also equipped with an integrated
store emergency shutdown, deactivating the whole solar system as soon as one of the
stores reaches 95 °C [200 °F].
Adjustment range /

Factory setting

selection
1.0 ... 20.0 K 5.0 K
0.5 ... 19.5 K 3.0 K
1.5 ... 30.0 K 6.0 K
4 ... 95 °C 45 °C
4 ... 95 °C 60 °C
1 ... 4 system dependent
0.1 ... 10.0 K 2.0 K
1.0 ... 20.0 K 1.0 K
0 ... 300 s 30 s
20 ... 100 % 30 %
Activated, Deactivated, Activated
Switch
- -
129