Trianco Contractor H.E. 50/90 EXTERNAL, Инструкция пользователя по установке, пусконаладке и обслуживанию, Страница: 11 / 24

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ELECTRICAL SUPPLY
230V single-phase 50Hz (fused 5 amp)
Note: this appliance must be earthed and the electrical
supply cable must be of a greater length than the
current-carrying conductor cables (i.e. live and
neutral supply cables).
All electrical wiring must be carried out by a qualified
electrician, in accordance with current I.E.E. Regulations and
any local regulations which may apply.
The 230V – 50Hz electrical supply must be fused by a
double-pole switch, with a contact separation of at least
3mm in both poles, and by a shuttered socket adjacent to
the boiler (both devices must meet the requirements of BS
1363).
The minimum requirement for the power supply cable is PVC
sheathed flexible cord, 0.75mm² (24x0.2mm, code
designation H05 VV-F or H05 VVH2-F), as specified in table
16 of BD 6500.
All external cables entering the control box must be secured
in position by the use of strain-relief bushes (supplied, see
fig. 7 for fitting instructions).
Terminal connections are also provided in the control box for the
ancillary controls.
It is strongly recommended that an RCD is fitted in the boiler
supply circuit.
See wiring diagram, Fig. 8 for further details.
High and Low Voltage Warning
In certain areas of the country, where there is a known risk of
high or low voltage fluctuations, the burner should be prevented
from starting by the use of a voltage-sensitive device if the
voltage drops or increases sufficiently to endanger the
installation.
FIG. 8 – WIRING DIAGRAM
FIG. 7
FIXING OF STRAIN
RELIEF BUSHES
NOTE:
MAINS SUPPLY FOR EXTERNAL CONTROLS MUST
COME FROM THE BOILER AS SHOWN, VIA AN RCD