Wiring Instructions - Aztec EB 897 01 Installation Instructions Manual

WIRING INSTRUCTIONS

ALL ELECTRICAL WORK MUST BE CARRIED OUT IN
ACCORDANCE WITH CURRENT IEE WIRING
REGULATIONS (SIXTEENTH EDITION).
BEFORE COMMENCING INSTALLATION CHECK
POWER SUPPLY TO PROPERTY TO ENSURE THAT
THERE IS SUFFICIENT CURRENT AND VOLTAGE
AVAILABLE FOR SIZE OF BOILER BEING FITTED.
TAKE INTO ACCOUNT REQUIREMENTS OF OTHER
ELECTRICAL APPLIANCES. THE BOILER MUST BE
CONNECTED TO THE MAINS SUPPLY BY MEANS OF
A DOUBLE POLE LINKED SWITCH WITH 3MM
CONTACT GAP IN BOTH POLES.
IMPORTANT: After completing electrical installation work
preliminary safety checks should be carried out as
described in BS 7671:2001
IMPORTANT:
The electrical supply requirements:-
The 2 kW boilers and 6 kW boiler supplies should meet the
requirements of EN 61000-3.3.
The 9 kW and 11 kW boiler must be installed in premises
having a service supply of > 100A per phase and meet the
requirements of IEC 60417-5855.
The 12 kW boiler must be installed in premises having a
A double pole RCD with trip level sensitivity of 30ma can
be used capable of breaking full load current to BS
EN61008: 1994
Supplied By www.heating spares.co Tel. 0161 620 6677
NOTE RCD UNIT can be used as the isolating switch if
mounted close enough to the boiler.
Miniature circuit breakers MCB MUST be fitted between
RCD unit and boiler and RCD and any external controls.
Refer to technical specification. For MCB ratings refer to
wiring diagram.
It is important the correct size MCB is used in the supply
from the RCD to the boiler. An additional MCB rated 6 A
will be required to supply the external controls.
ELECTRICAL CONNECTIONS
WARNING: THIS APPLIANCE MUST BE EARTHED.
The mains connection block is located inside the boiler
on a bracket at top left hand side of the boiler which can
be directly wired to the boiler MCB. Use the correctly
rated cable.
Where the pump is wired directly back to the boiler both
live and neutral connection must be used with the earth
being wired back to the earth post. This is important as
the pump is controlled by a switched neutral. This also
applies to pumps being controlled by a relay.
IMPORTANT: CORRECT POLARITY MUST BE
OBSERVED WHEN BRINGING THE MAINS SUPPLY
INTO THE BOILER.
GREY
SL
WIRING FOR EXTERNAL PROGRAMMER
10
FIG. 13