Technical data

6 720 611 449 GB (03.11)
Commissioning
25
5.5 Appliances with Storage Tank:
Setting hot water temperature
B Set the hot water temperature by means of the tem-
perature control on the appliance.
Fig. 33
ECO button
Pressing and holding the ECO button , until it lights
up switches from Comfort mode to ECO-mode.
Comfort mode, ECO button is not lit (factory set-
ting)
Comfort mode the hot water tank has priority. The hot
water cylinder is first heated up to the set temperature.
The appliance then switches to central heating mode.
ECO mode, button is lit
In ECO mode the appliance switches between central
heating mode and cylinder charging mode every 12
minutes.
5.6 Summer mode, hot water only
With room thermostat
B Turn temperature control on the appliance anti-
clockwise as far as the stop.
The central heating is now turned off. The hot water
function and the mains power supply for the heating
programmer and timer remain switched on.
5.7 Frost protection
B Leave master switch switched on.
If the appliance is to be left for long periods switch the
central heating on and set the room temperature con-
troller to 6°C.
B Add a suitable anti-freeze fluid to the water in the
central heating system.
Suitable products are available from Betz/Dearborn
Tel.: [phone], Fernox Tel.: [phone]
and Salamander Tel.: [phone].
5.8 Pump anti-seize function
Every time the pump is switched off, a timer is started.
If after 24 hours the pump has not run again, it is
switched on for a period of 10 seconds.
5.9 Fault Condition
In the unlikely event of a fault occuring while the appli-
ance is in operation:
The display and the textdisplay then show a fault code
and the button may also flash.
If the button flashes:
B Press and hold the button until the display shows
“––”.
The appliance will then start up again and the display
will show the central heating flow temperature.
If the button does not flash:
B Switch the appliance off and then on again at the
master switch.
The appliance will start up again and the central heat-
ing flow temperature will be displayed.
B Do not set the temperature higher than
60°C for normal operation.
B Only use temperatures of up to 70°C
temporarily for thermal disinfection pur-
poses.
i
With the text display you can set addition-
al hot water charging times and tempera-
tures.
Control Setting Water Temperature
Anti-clockwise limit approx. 10°C
(frost protection)
approx. 60°C
Clockwise limit approx. 70°C
Table 10
6 720 610 333-07.1O
i
Frost protection and constant frost pro-
tection modes can be set on the text dis-
play module.
i
This function prevents the central heating
pump seizing after long periods of inactiv-
ity.
i
A list of faults that may occur is given on
page 45.