19
8. Connecting a
programming timer
(accessory on demand)
Boilers are arranged for the connection of a programming timer (daily
or weekly), which diameter is 62 mm, to program the Central Heating
and the DHW operation.
To install the timer, see the following instructions:
Central Heating timer
• Reach the inside of the electrical box as described on paragraph 5.1:
“Access to the power supply terminal block”.
• Cut with a cutting nippers the box cover anchorage (pre-cut) on the
left side of the control panel.
• Install the timer, securing the screws.
• Remove the yellow jumper of the A3 connector on the boiler PCB
(contacts 2-4) and connect the “common and normally open” contacts
of the timer to the terminal board.
• Connect the motor contacts of timer to the A3 connector of the boiler
PCB (contacts 1-3).
If a battery-run timer is used, leave contacts (1-3) of A3 connector
free.
For the right connection of the timers see also the electrical diagram of
figure 4.
0506_2002
HEATING PROGRAMMER
Figure 4:
Programmer clock connection
DHW TANK PROGRAMMER
TERMINAL BLOCK M2
BOARD
BOILER
Domestic Hot Water timer (WITH WATER STORAGE TANK)
• Remove the yellow jumper of the M2 terminal block on the boiler
(contacts 5-6) and connect the “common and normally open” contacts
of the timer to the terminal board.
Insert the connecting cable through a cable clamp of the boiler.
free.
For the right connection of the timers see also the electrical diagram of
figure 4.
For the SLIM UB 80 – 120 boiler unit do not take account of these
connections, follow the instructions provided with the appliance.
PCB
