Room Thermostat Connection - Ariston microCombi 23 MFFI Installation And Servicing Instructions

2.12 R T
OOM HERMOSTAT
C
ONNECTION
18
To connect a room thermostat, it is necessary to:
1. - Open the control panel as indicated in
2.- Remove the link "A" from the terminal block on the reverse of the control panel.
3. - Insert the thermostat cable through the cable grommet and fasten it by means of the
cable-clamp provided.
4. - Connect the thermostat wires to the terminal block (Diagram A).
5.- If a remote time clock is to be fitted, disconnect the integral time clock from the P.C.B.
6. - Using a volt-free switching time clock, connect the switching wires from the time clock
following points 1-4 above (Diagram B).
7. - If using an external time clock and room thermostat, these must be connected in
series as points 1-7 above (Diagram C).
Note: Only a low voltage room thermostat capable of volt free switching must
be used. Factory fitted integral wiring must not be disturbed when wiring
external controls.
A
2.11.
SECTION
FO017A
FO016A
F . 2.21
IG