E.C.A. CA 24 BB - Page 29

[I] CH (Central Heating) Mode
By adjusting the CH potentiometer, summer mode or winter mode can be selected.
a) Summer mode
- Rotate the CH potentiometer to the I :J?:: I position. In the summer mode, any CH heat
demands can not be satisfied. The summer mode is only to satisfy domestic hot water demand.
b) Winter mode
- Rotate the CH potentiometer to the I ~I position. In the winter mode, your appliance satisfies
central heating
and also domestic hot water (fig. 25a).
- Adjust
any CH water flow temperature between 40 and aooc with the CH potentiometer. The
boiler will modulate to the desired temperature. LED L7 turns ON to indicate thatCH is active
(fig. 25a). If there is a DHW request, it interrupts the CH mode until DHW request is finished and
L7 turns to fast blink (fig.26a).
L3CD
L4~ L6~
L7W.
I CH mode is active.
ON OFF ON ON
fig. 25 a
- Rotate the CH potentiometer to minumum position. The summer mode will be active and the
system will
go back to stand-by mode again (fig. 25b).
L3CD L4~
L6~ L7illffi
Attente
ON OFF OFF
fig.25b
[]] DHW (Domestic Hot Water) Mode
- It is possible to have domestic hot water when:
a)
The appliance is in stanby-by mode (fig. 24a) or,
b) CH mode is active (fig. 25a). Because DHW mode has priority over CH mode, DHW
request interrupts the CH one.
OFF
29