Operation 4; Setting The Hot Water Temperature - Vailant uniSTOR Operating Instructions Manual

4 Operation
Danger!
a
Risk of scalding and bursts due to inap-
propriate alterations!
There is a risk of escaping steam, bursting,
and damage to the system if you make any
changes to the cylinder, control system,
supply lines for water and power (if
present), relief valve termination, or expan-
sion relief valve for the cylinder water.
> Do not make any improper changes.
Warning!
a
Risk of scalding
The output temperature of the draw-off
points can reach 85 ºC if the mixing valve is
set incorrectly.
> Do not adjust the mixing valve.
> If the output temperature at the draw-off
point is too high or low, contact a compe-
tent person to set the output tempera-
ture.
Caution!
b
Risk of damage from leaks!
Leaks in the water pipes between the cylin-
der and tap can result in water damage.
> If a leak occurs, close the cold water stop
valve on the cylinder.
> Contact a competent person to eliminate
the leak.
The cold water stop valve is located in the pipe connec-
tion of your domestic water connection for the cylinder
(cold water connection) which should have been fitted by
your installer in an accessible position close to the cylin-
der.
Operating instructions for uniSTOR 0020111106_01
4.1

Setting the hot water temperature

The hot water temperature is set to the required value
by the competent person during cylinder commissioning.
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
Fig. 4.1 Setting the cylinder thermostat
Key
1 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 timer. Observe the oper-
ating instructions for the timer.
> Remove the 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.

Operation 4

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