Technical data

12 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
The auroSTOR solar cylinder is available in three sizes:
210, 260, and 310 litres. The cylinder is made from stain-
less steel and is insulated with EPS with heat radiation
absorbers. The cylinder is supplied along with all
required cold and hot water control devices and a two
port motorised valve.
The cylinder works with the pressure of the water supply
line and does not need a cold water tank for its supply.
The cylinder has hot and cold water inlets with a diame-
ter of 22 mm. To enable the cylinder to work as well as
possible, a cold water supply with a dynamic pressure
and flow rate that are appropriate for the system is
required (¬ section 6.6.1).
4.1.1 Safety devices
The cylinder is delivered with all safety and control
devices for the operation of the unvented domestic
hot water supply system:
– Temperature and pressure relief valve (90 °C, 7 bar)
– Pressure reducing valve (3.5 bar) with line strainer
– Expansion relief valve (one-way valve, 6.0 bar)
– Solar circuit thermal cut-out, set to 80 ºC, to be connec-
ted with the solar pump in order to isolate this heat
source if there is a fault in the solar control.
– Thermal cut-out for electric immersion heater
– Primary heating circuit thermal cut-out, set to 80 ºC, to
be connected to the two port motorised valve in order to
isolate the primary heat source if a cylinder thermostat
fault occurs.
The thermal cut-out and other safety devices must
always be used.
4.1.2 Cylinder operating elements
1
2
3
4
5
1
6
5
7
8
2
3
4
Fig. 4.2 Cylinder operating elements
Key
1 Cover cap for reset button for primary heating circuit TCO
2 Primary heating circuit temperature controller
3 Electric immersion heater cover
4 Cover cap for reset button for solar circuit TCO
5 Solar circuit thermal cut-out (TCO)
6 Electric immersion heater
7 Cylinder thermostat
8 Primary heating circuit thermal cut-out
The following are pre-mounted at the factory for the
auroSTOR solar cylinder:
– Cylinder thermostat (7) and primary heating circuit ther-
mal cut-out (8)
– Electric immersion heater(6) with thermal cut-out and
cylinder thermostat
– Solar circuit thermal cut-out (5)
The cylinder must be properly wired in order to comply
with G3 building regulations.
4 Description of the components