Ariston ACO 35 MFFI, Инструкции по установке и обслуживанию

Страница: 38 / 72

38
S
ETTING THE
C
URVE
I
NCLINE
P 5
(Only enabled when an outdoor sensor is installed)
When using an outdoor sensor, the microprocessor-controlled
P.C.B. calculates the most suitable flow temperature, taking into
account the external temperature and the type of system. The
microprocessor is capable of doing this because it is possible to
establish a link between the external temperature and the flow
temperature of the Central Heating system water. This link
translates into a "thermal curve".
The type of curve should be chosen in correspondence with the
planned temperature of the system and the nature of the heat loss
present in the building.
To select the type of curve access the Setting Menu by pressing the
and buttons for 5 seconds and proceed as follows;
1. Press the button four times to access Parameter 5;
2.
P 5
will be shown on the left hand display;
3. Choose the curve required for the system from Fig. 3.26 and
select by pressing the and buttons.
F
IG
. 3.25
F
IG
. 3.24
A
DAPTING THE HEAT CURVE
“
P 6
”
(Only enabled when the outdoor sensor is activated)
Should the external sensor be fitted it will be necessary to set the
heating curve (see below) and may be necessary to adjust the parallel
shift depending on the performance of the heating system used.
If the temperature in the house is too high, it will be necessary to
decrease the parallel shift, whereas if the temperature is too low it will
be necessary to increase the parallel shift as described below.
To set up the external sensor proceed as follows;
1. Access the settings menu by pressing the and buttons
for five seconds;
2. Press the button 5 times to access Parameter 6
3.
P 6
will now appear in the left hand display
4. Adjust the parallel shift by turning the heating control knob
clockwise to increase or anti-clockwise to decrease as shown
below. The shift value can be read on the right hand display, from
-20 to +20 (Fig. 3.23).
+20
20
-20
6
60
100
-20 +20
-20 +20
to increase the curve in parallel
to decrease
the curve in parallel
Flow temperature (°C)
External temperature (°C)
F
IG
. 3.23
F
IG
. 3.22