Installation and Maintenance
OPUS 12V (R range)
4
Fig.7
12v Transformer
dimension details.
Installation of Transformer enclosure
(12 Volt units only)
The enclosure containing the transformer is intended to be
mounted out of sight (e.g. in a loft, cupboard, under floor-
boards etc.). However, if this is not possible the transformer
enclosure should be mounted as close to the ceiling, or as far
from the "splash zone" as possible (see below for definition of
the splash zone). As can be seen from the table of wiring sizes
on page 5, it is advisable to place the enclosure as close to the
fan as possible to reduce the costs of wiring and assist in
installation.
‘SPLASH ZONE’
The ‘Splash Zone’ can be considered to be an area within a
bathroom or shower room where a person using the bath or
shower can effectively reach. An arms reach is defined as 0.6
metres from the edge of the bath or shower up to a height of
2.25 metres.
Procedure
1. Remove two screws securing the cover and remove the
cover.
2. Position the base enclosure on mounting surface and
route cables through knockouts. Mark the fixing points on
the mounting surface and secure using suitable fixings (by
others).
3. Connect wiring as shown.
4. Replace cover.
KEEP VENTS CLEAR OF OBSTRUCTION.
NOTE:
NO EARTH IS TO BE CONNECTED BETWEEN
TRANSFORMER AND FAN
SIDE VIEW
PLAN VIEW
VIEW INSIDE COVER
END VIEW
Cover fixings
147 mm
85 mm
85 mm
60 mm
Mains supply
230v 1ph 50Hz
12v supply to fan
N L SL
240V
N L SL
12V
