SR882 operation manual
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5. Operation button function
5.1 Holiday function
Description:
This function activates at night, solar liquid will flow from storage tank to collector to cool the
tank, and therefore to prevent high thermal loads problem of the solar system due to
completely heated storage tank. The function is activated at night between 10 pm and 6 am,
when the collector temperature drops 8K below the storage tank temperature (T2), solar
circuit pump starts to work; when the temperature of collector is 2
o
C below the tank
temperature, and solar circuit pump is ceased.
Activate this function if:
You intend to be absent for an extended period (holiday)
No hot water is required for an extended period.
Note:
The function is deactivated when the temperature in lower section of storage tank
falls down to 35
o
C.
Activate/ deactivate this function:
►Press “Holiday” button for a long time until the signal of holiday function displays
on the screen, and then holiday function is activated.
►Repress “Holiday” button, signal disappears, holiday function is deactivated.
Note:
This function is only activated when you are not at home for long time, when you
come back; please make sure to deactivate it.
5.2 Manual heating
Description:
Electrical heater, gas or oil boiler can be as back-up devices in a solar system, this
controller can achieve constant temperature controlling, when controller gets temperature
signal of top part tank (T3) is 3
o
C below the preset temperature, back-up heating will be
triggered. When temperature of top part tank (T3) reaches to the preset temperature,
heating is ceased.
Conditions for triggering manual heating function: the setting temperature should be 3
o
C