71
ELECTRONIC CONTROL UNIT
Chapter 9
Tubular collector function
O CT:
Tubular collector function
Setting area: OFF...ON
If the regulator detects a raise of 2 K with
respect to the temperature of the collector
memorised last, the solar pump is inserted at
100% during the 30 seconds to determine the
current average temperature. After running
of the solar pump working time, the current
collector temperature is memorised as a
new reference. If the temperature detected
(new reference) has exceeded 2 K, the solar
pump is inserted again for 30 seconds. If
the temperature diff erence between the
collector and the tank should be exceeded
during the solar pump working time or
during the system’s period of inactivity,
the regulator passes automatically to the
solar load. If, during the inactive period, the
collector temperature should decrease by
2 K, the moment of insertion of the tubular
collector is calculated again.
Thermostat function
(SIST = 2)
Additional heating
Using surplus heat
The thermostat function works independently
from the solar working and can be used, for
example, to make the most of the surplus
heat or for additional heating.
TE I < TE D
Using the thermostat function for additional
heating
TE I > TE D
Using the thermostat function to take
advantage of the surplus heat
TE I:
Thermostat insertion
temperature
Setting area: 0.0...95.0 °C
Factory setting: 40 °C
TE D:
Thermostat disconnection
temperature
Setting area. 0.0...95.0 °C
Factory setting: 45 °C
When the 2 output 2 is inserted the display
shows the
symbol.
