Electrical Installation - Vaillant ECOmax VUW 236 EH Instructions For Installation And Servicing

4.8 Electrical installation

4.8.1 General electrical
requirements
All electrical work shall be carried out
by a competent person and shall com-
ply with the current edition of the IEE
regulations (BS7671).
The boiler is supplied for connection
to a 230V~ 50Hz supply fused at 3A
rating. Connection to the mains supply
should be made via a fused 3 pin
plug to an unswitched, shuttered
socket, both complying with the re-
quirements of BS1363. (Alternatively,
connection may be made via a 3 Amp
fused double pole isolator having a
contact separation of at least 3mm in
all poles and supplying the boiler and
controls only).
The point of connection to the mains
should be readily accessible and
adjacent to the boiler. A 3 core flex-
ible cord according to BS6500 tables
6, 8 or 16 (3x0.75 to 3x1.5 mm
should be used.
Warning: This appliance must be
earthed
4.8.2 Connecting to mains
supply
Slacken front panel fixing screw
(1, fig. 28) and lower front panel.
Remove terminal box cover by un-
doing screws (1, fig. 29)
Connect the power supply cord as
follows:-
green / yellow (earth) wire
boiler terminal
Blue (neutral) wire...... boiler terminal N
Brown (live) wire...... boiler terminal L
NOTE: Do not use boiler terminal
connections 7-8-9!
To enable easier access to the wiring
terminals it is possible to lift the ter-
minal strip (1, fig. 30) off the two
locating pins (2, fig. 30). After all
connections have been made, the
terminal strip must be relocated onto
the two pins.
22
2 )
fig. 28
fig. 29
fig. 30