8
J5
J6
J9
J10
J13
J4
J8
J7
J3
90
°
LIMIT
THERMOSTAT
95
°
SMOKE
STAT
100
°
SAFETY
STAT
OPTIONAL
Fig. 13
2.8.3
Wiring diagram
NOTE:
– The room thermostat may be connected to the terminals 1-2 of the “TA” connector after having removed the link.
– To remote control the boiler connect an external clock to the terminals 1-2 (24 V) of the “TA” connector and set the
built-in clock to “constant” mode (see user instructions for details).
JUMPERS POSITION AND FEATURES
JUMPER
POSITION AND FEATURE
SUPPLY POSITION
CLOSED
OPEN
JP1 - DELAY CANCELLATION*
Ignition delay cancelled
Ignition delay operating
Open
JP2 - DIVERTOR VALVE/D.H.W. PUMP
Use with div. valve
Use with boiler pump
Closed
*
In the heating phase, the electronic board is programmed to include a burner technical delay interval of approx. 3 minutes, which
occurs both at system cold starting and at subsequent re-ignitions. The aim is to overcome the problem of repeated ignitions and tur-
ning off with very short time intervals between. This could occur in particular in systems presenting high head losses. At each restart
after the period of slow ignition, the boiler will set itself for about 1 minute at the minimum modulation pressure, and will then move
to the heating pressure value set.
Fig. 13/a
2.9
TIME PROGRAMMER (optional)
The control panel is designed to allocate a
timer-programmer, code 8092214 (digital
time clock 1 channe) or code 8092213
(mechanical 24 Hour time clock), which
can be supplied upon request.
To fit the timer, remove the housing blank-
ing piece from the control panel and, with
the panel open, fit the timer to the panel
using the screws supplied therein (see fig.
13/a).
