Operating instructions

MECHANICAL PROGRAMER

1. General layout

The mechanical clock covers a 24 hour period. Each tappet

represents 20 minutes (A fig. 25). An override switch is

located on the right hand side of the clock (B fig 25).

2. To set the time

To set the time of day, grasp the outer edge of the dial and

turn slowly clockwise until the correct time is lined up with the

arrow (C fig. 25).

3. To Set the “On” and “Off” times

The clock uses a 24hours system. e.g. 8 =8.00 am and

18 = 6.00 pm. “ON” periods are set by sliding all tappets

between the “ON” time and the “OFF” time to the outer edge

of the dial.The tappets remaining at the centre of the dial are

the “OFF” periods.

4. To select function mode

Put the selector switch (6) to symbol 0 to control the boiler

by the clock. Put the switch (B) to “1” to select permanent

operation or to “0” to turn heating off permanently.

Fig. 24

Fig. 25