Electrical Supply; Wiring Diagram - Trianco Contractor WM70 HE INTERNAL User, Installation, Commissioning & Servicing Instructions

6. 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 cables entering the control box must be secured in position
by the use of strain-relief bushes (supplied, see fig 16 for fitting
instructions).
See wiring diagram, fig 17 for further details.
Important Note:
After wiring in the electrical supply, care must be taken
when attaching the control box to ensure no cables are
trapped between the boiler and the box.
FIG 17

WIRING DIAGRAM

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 16
Mains Supply 230V 1PH 50Hz
D/P Switch to suit L.A
Fused 5 amp
16