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Appendix
Appendix
A
Detecting and eliminating faults
Fault
Possible cause
No flow rate at the valve
1.
2.
3.
Low flow rate and pres-
1.
sure at a valve
Water from the valve is
1.
cold
2.
3.
4.
5.
Domestic hot water
1.
temperature too high
2.
3.
4.
Irregular domestic hot
1.
water output at the valve
2.
Inspection and maintenance work – Overview
B
N°
Work
1
Check the connections for tightness.
2
Check the temperature and pressure expansion relief valve.
3
Check the expansion relief valve.
4
Check the pressure in the expansion vessel.
5
Check the domestic hot water output at the valve (if required, clean the filters).
6
Check the target domestic hot water temperature.
7
Check whether the thermostatic mixing valve is working.
8
Fill out the cylinder's benchmark checklist.
C
Technical data
Technical data – General
Actual volumetric capacity
Heating circuit hot water volumetric capacity in
accordance with EN 12897
Hot water volumetric capacity of the solar circuit
Maximum pressure of the heating tube coil dur-
ing operation
Operating pressure
Maximum operating pressure
16
Water supply valve closed
Main filter blocked
Pressure reducer not installed correctly
Filter in cold water supply clogged
The cylinder was not set or is not operating.
The heat generator does not work.
The thermal cut-out was triggered.
The 2-port motorised valve is not working
The immersion heater does not work.
Use a thermometer to check the temperature; it
must be between 60 and 65 °C.
Check the cabling.
Thermostat set too high
Defective thermostat
Defective expansion vessel
Thermal control
VIH S GB 200/3
BES
191.0 l
127.0 l
187.0 l
0.35 MPa
(3.50 bar)
0.35 MPa
(3.50 bar)
0.7 MPa
(7.0 bar)
Remedy
1.
Check and open the valve.
2.
Close the water supply valve, clean the filter
and the water pressure reducer.
3.
Check whether the pressure reducer has been
installed correctly.
1.
Close the cold water supply, clean the filter for
the water pressure reducer.
1.
Check the thermostat or the room thermostat
and, if required, set this.
2.
Check the heat generator; a fault code is
present.
3.
Check and initialise the cylinder.
4.
Check the valve's connections.
5.
Set the thermostat or the room thermostat.
1.
Install a mixer tap.
2.
Repair the cable.
3.
Reduce the temperature of the thermostat to
55 °C.
4.
Replace the thermostat.
1.
Set the expansion vessel.
2.
Interrupt the power supply of the product and
heat generator, check the thermal cut-outs and
replace these if you find any defects.
VIH S GB 250/3
VIH S GB 300/3
BES
BES
241.8 l
281.3 l
148.0 l
159.0 l
231.0 l
249.7 l
0.35 MPa
0.35 MPa
(3.50 bar)
(3.50 bar)
0.35 MPa
0.35 MPa
(3.50 bar)
(3.50 bar)
0.7 MPa
0.7 MPa
(7.0 bar)
(7.0 bar)
Installation and maintenance instructions auroSTOR 0020221298_04
Maintenance-re-
lated interval
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
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