22
In order to access the inside of the boiler, it is necessary
to unscrew the fastening screws “A” of the control panel
l
ocated on the lower part of the panel itself.
T
he control panel moves downward and when pulled
forward rotates on two lateral hinges.
The panel stays in a horizontal position, which allows
access to the inner parts of the boiler.
To dismantle the front casing panel it is necessary to:
1 - Remove the two screws
“B”;
2
- Move the front casing panel up and lift forward.
2.12 REMOVING THE FRONT PANEL
To connect a room thermostat, it is necessary to:
1. - Open the control panel as indicated in SECTION 2.12.
2.- Remove the screws “A1” from the reverse of the
control panel (picture 3).
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
A2 (Picture 4) (Diagram A - Fig. 2.24).
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 - Fig. 2.24).
7. - If using an external time clock and room thermostat,
these must be connected in series as Diagram C -
Fig. 2.24.
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.
Ensure high voltage and low voltage circuits
are cabled separately to avoid induced voltage
in the low voltage circuits.
2.13 RO
OM
TH
ERMOSTAT
/ RE
MOTE
CL
OCK
CONNECTION
FIG. 2.24
B
1
2
A
A1
A1
3
4
A2
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