23
Mexico Super FF440 - FF480 -
Installation & Servicing
INSTALLATION
WARNING
The appliance MUST be efficiently earthed.
A mains supply of 230 V ~ 50 Hz is required.
The fuse rating should be 3A.
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. (BS.7671) Wiring Regulations and local
regulations. For Ireland reference should be made to the
current ETCI rules for electrical installations.
43 ELECTRICAL CONNECTIONS
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.
This connection should be readily accessible and be made
adjacent to the boiler (except in the case of bathroom
installations for domestic boilers where the point of
connection to the mains MUST be outside of the bathroom.)
44 INTERNAL WIRING
Flow and pictorial wiring diagrams are shown in
Frames 45 and 46.
1.
Remove the securing screw and lift off the
control box cover.
2.
Route the electrical leads into the box and wire
into the terminal strip, as shown.
Notes.
a.
Secure each lead with one of the cable clamps.
b.
The mains lead connection MUST be made so
that, should the lead slip from its anchorage,
the current conductors become taut before the
earthing conductor.
45 EXTERNAL CONTROLS
PCB
25
mex7390
Note.
If there are no external controls the circulating
pump MUST be wired into the control box.
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 47-49 cover the
systems most likely to be fitted to this appliance.
For wiring external controls to the
Mexico Super FF
boiler
reference should be made to the system wiring diagrams
supplied by the relevant manufacturer, in conjunction with the
flow wiring diagram below and also Frame 46.
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 50.
3.
If a proprietary system is used, follow the instructions
supplied by the manufacturer.
LEGEND
b
blue
bk
black
br
brown
gy
grey
or
orange
p
pink
r
red
v
violet
w
white
y/g
yellow/green
INST
ALLA
TION
200939-2.pmd
6/7/2004, 10:39 AM
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