During CH operation, the demanded CH supply temperature is displayed
on the operating panel. The resistance R in the Electrical diagram can
be removed when the room thermostat does not need any anticipation
current.
During CH operation, the CH supply temperature can be set between
30ºC and 90ºC and the set CH supply temperature is displayed on the
operating panel. During CH operation, the actual CH supply temperature
can be read by pressing the service key.
6
Domestic hot water operation
The hot water supply has priority over the heating. When the flow switch
detects a domestic hot water demand of more than 2 l/min, the CH
demand is interrupted. After starting the fan (code
3
) and ignition of the
burner(code
4
), the controller goes to domestic hot water operation
(code
6
).
During domestic hot water operation, the fan speed and hence the
power of the appliance is controlled by the controller on the basis of the
set domestic hot water temperatures. The domestic hot water
temperature can be set between 50ºC and 60ºC. The set temperature is
displayed on the operating panel.
During domestic hot water operation, the actual domestic hot water
supply temperature can be read by pressing the service key.
7
Heating the appliance
For a quick supply of domestic hot water, a comfort function has been
provided in the controller. This function keeps the heat exchanger at the
correct temperature. This comfort function has the following settings:-
•
Off: (Both LEDs off.) The heat exchanger is not kept warm,
delaying the supply of domestic hot water. When there is no
demand for domestic hot water, the comfort function can be
switched off.
•
On: The comfort function of the appliance is continuously
activated. The appliance always supplies domestic hot water
immediately.
•
Eco: The comfort function is self-learning. The appliance is
inactivated during the night or after a long absence. The appliance
adjusts to the user pattern of the domestic hot water requirements.
The eco mode is the most efficient hot water method.
2.4
PC interface
The controller has an interface for a PC. With a special cable and
accompanying software, a PC can be connected. This provision makes it
possible to follow the behaviour of the controller, the appliance and the
heating system during a long period.
10