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3. ELECTRICAL
DIAGRAMS
24
L
:
EGEND
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
: under absolutely no circumstances must jumpers 2, 7 and 8 be removed.
OTE
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 a 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:
7
8
CONFIGURATION
N.I.
N.I.
Central heating only
I.
N.I.
MFFI
N.I.
I.
Not used
I.
I.
RFFI System
N
: it is essential that the operations involving setting of the jumpers be
OTE
carried out only with the device turned off.
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
I = inserted (contact closed)
N.I = not inserted (contact open)