10
8. Electrical installation
WARNING: THIS EQUIPMENT MUST BE EARTHED.
All electrical wiring must be carried out by a competent person and in accordance with the
current
I.E.E. Wiring Regulations.
The control equipment supplied will ensure that the cylinder functions safely. It is intended that these
controls operate in conjunction with other control packages as described in the Solar system
installation guide which incorporates a programmable time clock etc.
8.1.The immersion heater
- A 3kW 230v 50Hz immersion heater is supplied with the cylinder. It
should be wired in accordance with the instructions given in Fig 8.1. The cable MUST be routed
through the strain relief bush. We recommend that the control thermostat is set at 60
°
C, the high limit
trip is factory set at 85
°
C.
8.2 Immersion heater wiring instructions
The immersion should be installed and wired in accordance with the instructions supplied with the
immersion itself, the following should also be observed:
8.2.1 Ensure the mains voltage corresponds to the voltage rating of the immersion heater as shown
on the rating label on the terminal cover.
8.2.2 Insert the immersion into the immersion heater boss at the bottom of the cylinder. Tighten
using an appropriate sized immersion spanner, or as required by the immersion instructions.
8.2.3 Wire the immersion heater through a double pole isolator switch or controller, having contact
separation of at least 3mm, using 1.5mm sq. flexible cable which must be fully earthed.
The
live to the immersion should be wired through its thermostat and cut-out as shown in figure
8.1, the Neutral to the Neutral terminal.
8.2.4 In the event of the manual reset cut-out operating, isolate the immersion heater from the
mains supply, investigate and identify the cause of the operation of this cut-out, rectify the fault
before manually resetting the cut-out via the reset button on the cut-out. Finally switch the
mains electricity supply back on.
8.2.5 Do not install an immersion heater without a thermal cut-out.
Fig 8.1
Fig 8.1
WARNING: THIS APPLIANCE MUST BE EARTHED.