Ideal Boilers Classic FF 340 LF Installation And Servicing Manual Download Page 23

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Classic FF 340 - 360 LF -

Installation & Servicing

INSTALLATION

38 WATER CONNECTIONS

1. Remove the plastic plugs from the flow and

return pipes.

2. Make all water connections and check for water

soundness.

39 ELECTRICAL CONNECTIONS

WARNING. The appliance must be efficiently earthed.

A mains supply of 230 V ~ 50 Hz is required.

All external controls and wiring must be suitable for mains voltage.
Wiring should be in 3-core PVC insulated & sheathed cable, not
less than 0.75mm

(24 x 0.2mm) to BS. 6500 Table 16 Wiring

Regulations and local regulations. For IE reference should be
made to the current ETCI rules for electrical installations.

Connection must be made in a way that allows complete isolation of
the electrical supply - such as a double pole switch, having a 3mm
(1/8") contact separation in both poles or a plug and socket, serving
only the boiler and system controls. The means of isolation must be
accessible to the user after installation.

37 GAS CONNECTION

External wiring must be in accordance with the current I.E.E.
(BS 7671) Wiring Regulations. For Ireland reference should be
made to the current ETCI rules for electrical installations.

The wiring diagrams illustrated in Frames 42-44 cover the
systems most likely to be fitted to this appliance.

For wiring external controls to the Classic FF boiler, reference
should be made to the system wiring diagrams supplied by the
relevant manufacturer, in conjunction with the wiring diagrams
shown in Frames 42-44.

Difficulty in wiring should not arise, providing the following
directions are observed:

1. Controls that switch the system on or off, e.g. a time switch,

must be wired, in series, in the live mains lead to the boiler.

2. Controls that override an on/off control, e.g. frost thermostat,

must be wired into the mains lead, in parallel, with the
control(s) to be overridden. Refer to Frame 44.

3. If a proprietary system is used, follow the instructions

supplied by the manufacturer.

4. System designs featuring controls or wiring arrangements

which allow the boiler to fire when there is no pump
circulation taking place should not be fitted.

Advice on required modifications to the wiring may be obtained
from the component manufacturers.

Notes.

Connection between a frost thermostat and the time control
should be made without disturbing other wiring.

A frost thermostat should be sited in a cool place in the
house, but where it can sense heat from the system.

Refer to 'Gas Supply ', page 6.
Refer to Frame 2 for gas inlet service dimensions.

A minimum pressure of 20 mbar MUST be available at the boiler inlet
with the boiler operating. The main gas cock is on the left hand side of
the gas control valve, as shown. To facilitate connection the gas cock
may be removed from the gas control valve.

Flow wiring diagram

Note.

If an optional programmer is to be fitted

refer to the instructions provided with the kit
and Frame 40.

1. Remove the control box securing screws.

Swing the box down into the servicing
position. Refer to Frame 47.

2. Route the mains cable into the box from

the RHS of the boiler.

3. Connect the live, neutral and earth wires

into the terminal strip as shown.

4. Secure the mains lead with the cable

clamp.