D e lt a S o l
®
E
© RESOL 10306_DeltaSol_E.mon
us.ind
d
|
26
Cooling function (1-tank systems)
:
Solar/Options/cool func.
selection: “Yes”, “No”
factory setting: “No”
The cooling function can be used in 1-tank systems (ba-
sic systems 1 and 2). If the tank temperature exceeds its
maximum limitation (Tstmax), the surplus energy in the
collector can be diverted. The pump output uses maximum
pump speed.
Function (switching conditions):
If Tstmax is exceeded, and the switch-on temperature dif-
ference
D
Ton between collector and tank are reached, the
solar circuit (primary) and the cooling relay are operated.
If the switch-off temperature difference
D
Toff is not met
during this period, the solar circuit and the cooling relay
are switched off.
2-collector system:
(basic system 2)
In this system, only the collector circuit which fulfills the
switch-on conditions described above, is operated.
shared collector circuit (1 pump)
If tank loading is carried out by one collector, the other one
is operated after the adjusted off time.
This means the pump speed may reduce briefly to the
minimum as the normal pump speed is ignored by the
controller.
Evacuated tube collector function:
Solar/Options/tube col.
selection: “Yes”, “No”
factory setting: “No“
Solar/Expert/tube-run
adjustment range: 5 ... 500 s
factory setting: 30 s
Solar/Expert/tube-init
adjustment range: 00:00 ... 00:00
factory setting: 07:00
Solar/Expert/tube-final
adjustment range: 00:00 ... 00:00
factory setting: 19:00
Solar/adj. values/tube col
adjustment range: 1 ... 60 min
factory setting: 30 min
This function helps overcome the non-ideal sensor position
with some evacuated tube collectors.
This function operates within a given time frame (“tube
init” and “tube-final”). It activates the collector circuit
pump for 30 seconds (adjustable via the parameter “tube-
run”) every 30 minutes (adjustable via the parameter “tube
col”) in order to compensate for the delayed temperature
measurement.
If the collector sensor is defective or the collector is blocked,
this function is suppressed or switched off.
The collector circuit is operated at minimum pump speed.
2-collector systems
2 separate collector circuits (2 pumps)
Both collectors are operated independently from each other
by means of this function.
If a tank is being loaded by one collector, the other one is
operated after the adjusted off time.
