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LEGEND
:
A: JUMPER
When needed, the P.C.B. allows the different options to be selected
by means of a wire link.
The boiler has the following basic arrangement:
1 OPEN
2 CLOSED (jumper)
3 OPEN
4 OPEN
5 OPEN
6 OPEN
7 CLOSED
8 OPEN (MFFI); CLOSED (SYSTEM)
N
OTE
: under absolutely no circumstances must jumpers 2, 7 and 8
be removed. The opening of such contacts will lead to boiler
malfunction.
This is the factory configuration. It is recommended that this set-up
not be changed, unless under the following particular circumstances:
JUMPER 3: if the contact is closed, the Secondary Output (flying
clamp connected to connection C7; positions 1-9)
controls an LPG valve (optional).
JUMPER 4: if the contact is closed, the continuous operation of
the pump is selected. If the contact remains open, it
has no effect and there is no change in the
operation of the boiler.
JUMPER 5: if the contact is closed, the signal transmitted by the
connection of the secondary output clasp
(connected to C7; positions 1-9) relates to a
secondary pump (optional). If the contact remains
open, the output signal controls a zone valve
(optional).
JUMPER 6: not used
JUMPER 7/8:
I = inserted (contact closed)
N.I = not inserted (contact open)
N
OTE: it is essential that the operations involving setting of the
jumpers be carried out only with the device turned off.
10
275
The P.C.B. is fitted with 2 fuses, on the
live and the neutral.
The fuse holder contains:
- 5 x 20mm “3.15A Slow” glass fuses
2.11. ELECTRICAL DIAGRAM
B: Control microprocessor
C: Flame detection jumper (under no circumstances should this
jumper be moved from the 1-2 position)
D: Anti-cycling device (RA)
E: Maximum heating output regulation (PR)
F: Soft-light regulation (RLA)
G: Operating mode selector knob
H: Heating temperature adjustment
I: Domestic hot water temperature adjustment
J: Remote control module
K: Main microprocessor
L: Relay
M: Fuses (2 x 0.54 A SLOW)
N: Transformer (PRI: 230V-50Hz; SEK: 10V-0,8VA; SEK:10V-3,5VA;
SEK:10V-3,5VA;)
O: Fuses (2 x 3.15 A SLOW)
P: Earth
Q: Spark generator
R: Connection to the main P.C.B.
S: Comfort light
T: Programming keys
U: Comfort key
V: Alpha-numeric display
X: Set and reset key
W: Connection to PC
C1 = FAN
1: “Hall” sensor power supply 12V (red)
2: “Hall” sensor ground (blue)
3: Not used
4: Start of coil (black)
5: “Hall” sensor input (white)
6: End of coil (brown)
C2 = POWER SUPPLY
1: Earth (yellow/green)
2: Earth (yellow/green)
3: Not connected
4: Neutral (blue)
5: Not connected
6: Live (brown)
7
N.I.
I.
N.I.
I.
8
N.I.
N.I.
I.
I.
CONFIGURATION
Central heating only
MFFI
Not used
RFFI System