15
Maintenance must be carried out by a compe-
tent person.
5.1 Safety cut out
1. The safety cut-out operates if:
a. Wiring is incorrect.
b. The immersion heater thermostat or
cylinder thermostat fails.
2. Important: Before resetting the safety cut-
out or altering the thermostat setting, isolate
electrical supply to the unit prior to removal
of the electric junction box cover (2).
3. Reduce the thermostat setting and press
the reset button (6). After adjustments are
completed, ensure the electric junction box
cover (2) is refitted correctly and the retain-
ing screw is fitted.
4. If still out of operation, contact installer.
5.2 Settings
5.2.1 Thermostat setting
The thermostats in the product are adjustable
from 40-70°C. The thermostats should not be set
lower than 60°C to prevent bacteria growth.
To adjust the temperature:
A) Disconnect the power supply.
B) Remove the junction box cover (1) by unscrew-
ing the retaining screw (2).
C) Adjust the temperature on the thermostat dial
(7) with a screwdriver.
Changing the temperature setting on the thermo-
stat changes the temperature of the water inside
the vessel. Increasing the temperature will result
in a higher available hot water volume.
The outgoing hot water temperature from the
product to the taps will be the same as the set
temperature of the thermostat. For temperature
adjustment, see pt. 5.2.
Since the water temperature in the product can
be up to 70°C it is strongly recommended to in-
clude a mixer valve in the system to avoid danger
of scalding.
5.2.2 Resetting the safety thermostat
The safety thermostat on the product cuts out
when there is a risk of overheating. This can be
reset by disconnecting the power supply and
removing the junction box cover - loosen the
retaining screw (2) securing the cover (1) - see il-
lustration. Press the red “RESET” button (6). A no-
ticeable click should be heard when the thermo-
stat resets. If the thermostat cuts out repeatedly,
contact the installer.
The cover panel (1) must be refitted before the
power is switched back on.
5. USER GUIDE, SAFETY AND SERVICING
!
WARNING
Continuous voltage is present at the terminals in the
junction boxes. Before any electrical work is done,
the power supply must be disconnected and secured
against activation while the work is in progress.
RESET
RE
SET
M2
1
2
3
4
THERM-O-DISC
1
2
7
6
1
1
2
2
