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To connect a room thermostat, it is necessary to:
1. - Open the control panel as indicated in
SECTION 2.11.
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.
2.12 ROOM THERMOSTAT
CONNECTION
A
FO016A
FO017A
FIG. 2.21