----------- PROXEL ENGINEERING -------------------- www.proxel-bg.com------------------------------ DTLED rev. 1.6/06.2015------
3
USAGE
Function Differential thermostat
Monitors the temperatures in the tank and collector, controls output "R1 - circulation pump"
„Auto” mode
Monitoring tº in the tank and collector
When both [
tºcollector
>
tºtank
+
dT + 2ºC] and
[
tºcollector
>
T.CollectorStart
] are
true, the circulation pump is activated till [
tºcollector
>
tºtank
+
dT - 2ºC
] or tº colector
falls below the T.CollectorStart.
„Vacantion” mode
-
During enough sunshine – it operates same way as in "Auto" mode
-
Activation of Circulation when [
tºcollector < tºtank -10 ºC ]
to cool the tank up to
40 ºC
Build in Protections:
-
Freezing of collector: when the
tºcollector
is lower than T.collector Defrost - 2ºC, the
pump is activated to raise the
tºcollector
above T.collector Defrost + 2ºC, but only if the
tºtank
> 8ºC
-
Overheating of the tank: when the [
tºtank
> T.Boiler Max] is reached, the circulation is
disabled – unconditionally
-
Overheating of collector: when [
tºcollector
>
100 ºC
] and [
tºtank < T.BoilerMax] are
reached, the pump is activated until
tºcollector
falls below 100 ºC
-
High temperature (overheat recovery): When
tºcollector
reaches a range of 110-140 ºC
and
tºtank
<T. Boiler MAX, the circulation is activated at short intervals of 1 sec. every 20
seconds - to slowly reduce the collector temperature. If
tºcollector
exceedes over 140°C,
the circulation is strictly forbidden to protect the system from heat shock.
-
Pump blockage: automatic forced activation for 60 sec. every 7 days of inactivity
Monitors temperatures in the tank and controls the output "R2 - Heater"
„Auto”mode
If tº tank < T.Boiler Thermostat , the output "R2 - Heater"
is
activated
“Tank thermostat and Eco function is OFF”
“R2-Heater” output is activated once it is necessary.
"Tank thermostat – and Eco function enabled"
Eco function:
During enough sunshine and operation of the pump, the activation of the "R2 -Heater"
output is postponed for 15 minutes after the last activation of the pump.
„Vacantion” mode
The
"R2 - Heater"
output is not activated except for frost protection
Protection:
of freezing of the tank: if
tºtank
goes
below 8°C, the "R2 -Heater" output is activated to
heat up the tank
----------- PROXEL ENGINEERING -------------------- www.proxel-bg.com------------------------------ DTLED rev. 1.6/06.2015------
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