Sime Format System 25 HE, Installation And Servicing Instructions, Page: 11 / 32

9
2.8.3 Wiring diagram
J5 J6
J9
J10
J13
J4
J8
J7
J3
90° LIMIT
THERMOSTAT
95° SMOKE
STAT
100° SAFETY
STAT
OPTIONAL
Fig. 13
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 turning 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-program-
mer, code 8092214, which can be supplied upon request.
To fit the timer, remove the housing blanking 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).