Ideal Boilers FF 350 Installation And Servicing Download Page 22

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Classic FF -

Propane Installation & Servicing

INSTALLATION

38 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 insulating 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.

39 EXTERNAL CONTROLS

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 41-43 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 41-43.

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 43.

3. Controls that switch the circulation pump only on and off,

e.g. a room thermostat, must be wired, in series, with the
pump in the live pump lead.

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

supplied by the manufacturer.

5. 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.

Flow wiring diagram

Note.

If an optional programmer is to be fitted

refer to the instructions provided with the kit
and Frame 39.

37 WATER CONNECTIONS

1. Remove the plastic plugs from the flow and

return pipes.

2. Make all water connections and check for

water soundness.

36 GAS CONNECTION

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

A minimum pressure of 37 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.

1. Remove the control box securing screws.

Swing the box down into the servicing
position. Refer to Frame 46.

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.

5. On completion of all wiring connections,

relocate the control box and secure.

Limit
thermostat

Programmer unit

O/heat thermostat