DEX & DBX Installation, Maintenance and User Instructions V1.05
Page 14
August / 2014
Operation (Model DEX only)
Temperature setting
The required hot water temperature can be
increased or decreased in increments of 1°C
by briefly pressing the up arrow and down
arrow function keys.
Depressing the function key for a longer
time changes the temperature continuously.
The temperature can be adjusted between
20°C and 60°C. (DEX12 20°C and 55°C)
Note. Reducing the temperature below 20°C
displays ‘- -’ and the heating function will
not operate.
Program buttons
The two program keys allow a preset
temperature to be selected quickly.
The factory setting is 35°C for program 1
and 48°C for program 2.
The preset temperature can be changed to
the current temperature setting by prolonged
pressing of the program key.
The display changes from ‘P1’ or ‘P2’ to
the new temperature value which becomes
available each time the corresponding
program key is pressed.
Temperature limitation
Units are supplied with the temperature
limitation function deactivated.
To activate, select the limit temperature then
press the program 1 and up arrow function
keys simultaneously for at least 3 seconds.
‘HI’ is displayed briefly to confirm activation.
To deactivate, press the program 1 and
down arrow function keys simultaneously for
at least 3 seconds.
‘- -’ is displayed briefly to confirm deactivation.
Note. Programmed temperature settings will
need to be reset after deactivating
temperature limitation.
Set temperature
-1°C
+1°C
Select preset temperature
A2
A1
B1
B2
Temperature limitation on
Press > 3
seconds
+
1
2
Temperature limitation off
Press > 3
seconds
+
Confirmation of
deactivation
1
2
Store temperature
Press > 3 seconds
Set required
temperature
1
2
3
4
