Ariston Type C Installation And Servicing Instructions page 30

F . 3.16
IG
F . 3.17
IG
F . 3.18
IG
K
D
F . 3.19
IG
30
Boiler types F F
Factory setting:
00 - ACO 27 / 32 MFFI (C.H. + D.H.W.)
02 - ACO 27 / 32 RFFI SYSTEM (C.H. only)
T
HIS PARAMETER MUST NEVER BE ADJUSTED
Secondary outlet Function E E
(This parameter can be modified only with the
interface PCB connected)
With the interfa ce PCB connected, it is possible to set the boiler
to operate with one of the following accessories, (see Section
2.10 for further information). The setting can be varied by
pushing the and keys, the following options are available:
0 0 0 0
zone valve - factory setting
0 0 1 1
LPG valve
0 0 2 2
seconday pump
0 0 3 3
NOT USED
P O
UMP VERRUN
The pump overrun may be varied (after the burner has been turned
off) by pressing the programming keys
The following modes are available:
0 0 1 1 1 minute of pump overrun
0 0 3 3
3 minutes of pump overrun - factoy setting
0 0 6 6
6 minutes of pump overrun
0 0 9 9
9 minutes of pump overrun
1 1 2 2 12 minutes of pump overrun
1 1 5 5
15 minutes of pump overrun
C C O O
Continuous pump overrun
Comfort Function (MFFI model) C C
The boiler allows the convenience level to be increased in the output
of domestic hot water by means of the "COMFORT" function. This
function keeps the secondary exchanger warm during the periods in
which the boiler is inactive, thereby allowing the initial water drawn to
be at a higher temperature.
The function may be activated by pressing the COMFORT button
key on the control panel (see section 3.3.). When the function is
active, a yellow light "K" comes on, again located on the control
panel.
The comfort function can be activated or deactivated by pressing
the and keys
0 0 0 0 Comfort function deactvated
0 0 1 1 Comfort function active for 30 minutes - factory setting.
It is possible to deactivate the comfort function by pressing the
button .
The yellow LED "K" will go out.
N : During the overrun period of the pump, the "COMFORT"
OTE
function, if selected, is temporarily deactivated. The L.E.D. light
remains on to indicate that the boiler will return to the "COMFORT"
mode once the pump overrun has finished.
Pump Speed Adjustment P P
By pressing the and
operation of the pump, the two options are as follows:
U U 0 0 - Single Speed Pump
U U 1 1 - Modulating Pump - factory setting
.
P P
and ..
keys it is possible to adust the