IDEAL istor HE260, Installation And Servicing, Page: 36 / 80

36
istor system store -
Installation and Servicing
INSTALLATION
Note. Access to wiring centre can be
improved by first removing
control fascia panel. Refer to
Frames 53 and 54 for detail.
1. Route the mains cable into the
bottom rear centre of the boiler.
2. Wire the permanent live supply
into the 5-way remote plug
terminals, L3, N & .
Note. Ensure that the lengths of
the current carrying conductors
are shorter than the earth
conductor so that if the cable slips
in its anchorage the current
carrying conductors become taut
before the earth conductor.
3. Wire the room thermostat
switched live into terminal L2.
4. Wire any frost thermostat
switched live into L1.
4. Secure the mains lead with the
cable clamp.
5. Reconnect the mains lead plug.
Ensure it is fully located.
43 INTERNAL WIRING
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42 ELECTRICAL CONNECTIONS
WARNING . This appliance MUST be earthed.
Boiler water connection
A mains supply of 230 V ~ 50 Hz is required.
The fuse rating should be 3A.
Wiring external to the boiler MUST be in accordance with the
current I.E.E. (BS7671) Wiring Regulations and any local
regulations.
All external controls and wiring must be suitable for mains
voltage.
Wiring should be 3 core PVC insulated cable, not less than
0.75 mm
2
(24 x 0.2mm), and to BS 6500 Table 16. For IE
reference should be made to the current ETCI rules for
electrical installations.
Connection must be made in a way that allows complete
isolation of the electrical supply such as a double pole switch
having a 3mm (1/8") contact separation in both poles, or a
plug and socket, serving only the boiler and system controls.
The means of isolation must be accessible to the user after
installation.
Immersion heater
Note.
An immersion heater is supplied fitted to the cylinder and is
intended for use as a back up heat source of DHW. Wiring of
this immersion heater Must be completely separate from the
boiler electrical connections.
1. Wire the heater through a double-pole switch or controller,
having contact separation of at least 3mm, using a cable
size of at least 1.5sq. mm flexible cable, 85 deg.C rubber
insulated HOFR Sheathed, complying with BS6141 Table
8. It MUST be fully earthed. Ensure all terminal
connections are securely made. Do not however use
excessive force when tightening terminals.
2. BEAB Approval will only to this heater if the following
thermostats are used: Series AD, BD, CD. Control
thermostat-Diamond HWT Series of Sunvic VKL Series.
Resettable master thermostat-Sunvic Series VKL and
Thermtec SK. Series AF, BF, CF. Thermowatt type RTS-3
thermostat.
3. In the event of the manually resettable cut-out operating,
isolate the heater from the mains supply before removing
the terminal cover. Investigate and identify the cause for
the operation of this cut-out. Then rectify the fault before
manually resetting the master thermostat, replace the
terminal cover securely before re-energising the heater.
If the fault re-occurs, replace the thermostats within the
heater.
INST
ALLA
TION