15
Classic LX, RS -
Installation
The internal wiring of the control box is shown in Frame 19.
DETAIL OF CONTROL BOX TERMINALS
Note.
In order to connect the incoming mains wires, first remove the
control box fixing screw then pull the box
forward and downward to disengage.
Ensure that the earth lead is longer than the
live and neutral so that if the cable slips in
its anchorage the current conductors
become taut before the earth conductor and
that the cable is routed through the strain
relief clamp. Ensure all cables are secure
and that no basic insulation is accessible
outside of the control box.
15 GAS CONNECTION
A MINIMUM gas pressure of 20 mbar (8 in.w.g.) 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 removed from the gas
control valve.
16 WATER CONNECTIONS
1.
Remove the plastic plugs from the flow and return
pipes.
2.
Make all water connections and check for water
soundness.
LEGEND
b
blue
br
brown
g/y
green/yellow
INSTALLATION
INST
ALLA
TION
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 cable NOT
LESS than 0.75 mm
2
(24 x 0.2 mm) to BS.6500, Table 16.
Wiring external to the boiler MUST be in accordance with current
l.E.E. (BS7671) Wiring Regulations and local regulations.
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.
Note.
If the optional Programmer Kit is to be fitted, refer to
the instructions provided with the kit, ignore this frame and go
to Frame 18.
The wiring diagrams illustrated in Frames 20-23 cover the systems
most likely to be fitted to this appliance.
For wiring external controls to the
Classic RS
boiler, reference
should be made to the system wiring diagrams supplied by the
relevant manufacturer, in conjunction with the wiring diagrams shown
in Frames 19-23.
Difficulty in wiring should not arise, providing the following directions
are observed:
1.
Controls that switch the system ON and 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. a frost thermostat,
MUST be wired into the mains lead, in parallel, with the control(s)
to be overridden - refer to Frame 23.
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 PUMPED OR GRAVITY CIRCULATION TAKING PLACE
SHOULD NOT BE FITTED.
Advice on required modifications to the wiring may be obtained from
the component manufacturers.
Notes 1.
Connections between a frost thermostat and the time
control should be made without disturbing other
wiring.
2.
A frost thermostat should be sited in a cool place in
the house, but where it can sense heat from the system.
19 PICTORIAL WIRING
FLOW WIRING DIAGRAM
18 EXTERNAL CONTROLS
17 ELECTRICAL CONNECTIONS
Summary of Contents for Classic LX RS 230
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