21
ENGLISH
5. PROTECTIONS / PROTECTIVE FUNCTIONS
Menu “5. - Protection functions” can be used to set and
activate a number of protective functions.
To quit the menu, press “esc” or select “Exit”.
5.1 System protection
The protection function prevents system components
from overheating by shutting off the solar pump automat-
ically. If the “SProt Ton” value is exceeded at the collector
for 1 minute, the pump shuts off and stays deactivated.
The pump will be reactivated when the temperature drops
below the “SProt Toff” setting.
System protection - Settings range: On, Off / Default: see table.
SP T on – Settings range: 120 °C to 150 °C / Default: see table.
SP T off – Settings range: 50 °C to 115 °C / Default: see table.
b
If system protection is activated, the temperature in the collector when idle becomes particularly high; consequently
there will be a rise in system pressure, accompanied by a risk of damage to the system. Pay close attention to the
directions provided by the manufacturer.
5.2 Collector protection
The collector is protected against overheating. The pump switches on to transfer heat from the collector to the storage
cylinder.
If “CP Ton” is exceeded at the collector sensor, the pump will be activated and continue to operate until the temperature
reaches “CP Toff" or the “CP Tmax Storage” setting is exceeded at the storage or in the pool.
Collector protection - Settings range: On, Off / Default: see table.
CP T on - Settings range: 105 °C to 150 °C / Default: see table.
CP T off - Settings range: 50 °C to 105 °C / Default: see table.
Tmax storage 1 - Settings range: 30 °C to 140 °C / Default: see table.
Tmax storage 2 - Settings range: 30 °C to 140 °C / Default: see table.
b
Protection of the system takes priority over protection of the collector. Even if the conditions for activation of the col-
lector protection are in place, the solar circuit pump will be deactivated when the “SP T on” temperature is reached.
5.3 Recooling
In system variants with solar panels, when the cooling function is activated, excess thermal energy in the storage cylinder
is returned to the collector. This will occur only if the temperature in the cylinder is higher than the “Recool Tsetpoint” set-
ting and the temperature at the collector is at least 20 °C lower than in the cylinder, and before the storage temperature
has dropped below the “Recool Tsetpoint” setting. In systems with two storage cylinders, the setting is applied to both
cylinders.
Recooling - Settings range: On, Off / Default: see table.
Recooling Tref - Settings range: 0 °C to 99 °C / Default: see table.
b
Whenever the Recooling function is active, energy will be lost through the collector! Recooling should become ac-
tive only when the demand for heat is low, for example during prolonged absences / holidays.
5.4 Frost protection
A two-stage frost protection function can be activated. In stage 1 the controller activates the pump for one minute every
hour if the collector temperature falls below the setting “Frost stage 1”. If the collector temperature drops further to “Frost
stage 2”, the pump will be activated and kept running continuously by the controller. If the collector temperature then
returns to a level 2 °C higher than “Frost stage 2”, the pump will shut off again.
Frost protection: Settings range: On, Off / Default: see table.
Frost stage 1: Settings range: 6 °C to 10 °C or off / Default: see table.
Frost stage 2: Settings range: -25 °C to 6 °C / Default: see table.
b
When frost protection is active, energy will be lost through the collector! The function is normally not activated for
systems with antifreeze. Observe the directions regarding the operation of other system components!
5.5 Seizing protection
If seizing protection is active, the controller switches on the relay and the connected components for 5 seconds every
day at 12:00 (“daily” setting), or every Sunday at 12:00 (“weekly” setting), in order to prevent the pump and/or the valve
from sticking after a lengthy idle period.
Settings range R1: daily, weekly, off / Default: see table.
5.Protection functions
1.System protection
2.Collector protection
3.Recooling
4.Frost protection
5.Seizing protection
OK
Exit protection functions
Содержание SC SUN 300
Страница 35: ......
