Operating instructions
8 Operating instructions for auroSTOR 0020111120_01
4.3  Setting the hot water temperature
The hot water temperature is set to the required value 
by the competent person during the cylinder commis-
sioning process.
If an external controller is installed for hot water tem-
perature control, you can set the hot water temperature 
and primary heating times using this controller.
For information on making settings, see the operating 
instructions for the controller
2
1
Fig. 4.1 Setting the cylinder thermostat
Key
1  Upper front cladding
2 Cylinder thermostat
If no controller for hot water temperature control is 
installed, you can set the required hot water tempera-
ture on the cylinder thermostat (2). You can set the 
reheating times on the installed hot water timer. 
Observe the operating instructions for the hot water 
timer.
 > Remove the upper front cladding (1) from the cylinder.
 > Set the desired cylinder hot water temperature on the 
cylinder thermostat (2). 
 > Mount the upper front cladding on the cylinder.
In order to avoid calcification, the temperature should 
be set to a maximum of 60°C.
 > Use the operating instructions for the gas-fired wall-
hung boiler to make sure that the unit is ready for opera-
tion. 
i
 If you are heating up water for the first time or 
after a long switch-off period, the full cylinder 
performance is only available following a waiting 
period. 
i
 If the auroSTOR has been installed in a cupboard 
used for airing clothes, make sure that clothing 
and other objects are not placed on the cylinder, 
control devices, pipes or other system compo-
nents.
i
 Always make sure that there is clear access 
to the cylinder to enable the use of the hot 
water thermostat controller and the thermostat 
mixer.
4.4  Switching off hot water production
 > Switch off the gas-fired wall-hung boiler (see operating 
instructions for the gas-fired wall-hung boiler) to tem-
porarily switch off the heating and hot water system. 
4.5 Frost protection
4.5.1  Frost protection of solar heating system
 > Arrange for a competent person to check the frost pro-
tection of the solar heating system once a year.
The checking of the frost protection is a usual compo-
nent of a maintenance agreement with a competent per-
son.
i
 Do not add any fluid to the solar circuit. 
Do not mix the solar fluid with other fluids.
4.5.2  Cylinder frost protection
b
 Caution!
Risk of damage due to frost!
If the cylinder is placed out of operation for 
a relatively long period of time in an 
unheated room (e.g. during a winter holi-
day), the cylinder must be completely 
drained. 
 > Contact a competent person to drain the 
cylinder.
If you are absent during a relatively long period when 
there is a risk of frost, make sure that you leave the cen-
tral heating on and that the temperature in the cylinder 
room and in all other rooms is kept above freezing.
4 Operation










