17
Alpha SolarSmart 90 - Installation
4.8
CONNECT THE PIPEWORK - Fig. 15
1.
Thoroughly flush out all the water pipework.
Ensure that all the plastic caps are removed from all connections.
Note:
If soldering union bends, ensure that the bends are not connected to the valves etc., otherwise the internal seals
may be damaged.
2.
Connect the pipework from the unvented kit to the solar cylinder.
Note:
No valves must be fitted between the cylinder and the unvented kit.
3.
Connect the system pipework to the boiler and the discharge pipe to the heating system pressure relief valve.
Do not forget that the pressure relief valve discharge pipe must be routed clear of the boiler to a drain in such a manner
that it may be seen, but cannot cause injury to persons or property. Refer to the boiler instructions.
4.
Connect the discharge pipework to the temperature/pressure relief and expansion relief valves via the tundish supplied.
This pipework must be installed as recommended in Unvented Hot Water Storage System, Sectioon 3.3.
5.
Ensure that all the valves are closed (spindle flats at right angles to valve) and do not turn on the water supply at this
stage.
4.9
ELECTRICAL CONNECTIONS
1.
Gain acces to the electrical control box of the solar
cylinder by removing the one screw and washer
securing the bottom cover and remove the cover. See
Fig. 17. Remove the front cover of the cylinder by pulling
it forwards. Remove the screws securing the front of the
control box to provide access to the terminals on the
control board.
Refer to Section 2.6 for details of all electrical
connections required.
2.
Connect the Drain Back Unit pump -
The drain back
unit pump is fitted with a 6 metre cable. Route the cable
to the solar cylinder control box and pass it through the
cable clamp.
Connect the wires as follows:
Brown wire to terminal 9, Blue wire to terminal 8 and
Green/Yellow wire to
.
Ensure that the cable is secured in the cable clamp.
3.
Connect the Collector Sensor -
The sensor has a 7
metre cable. Route the cable to the solar cylinder control
box and pass it through the cable clamp. Connect the
White and Brown wires to terminals 2 and 3.
Ensure that the cable is secured in the cable clamp.
4.
Connect the Mains Supply -
Refer to Sectioin 2.6.
Note:
The solar cylinder has been fitted with a mains supply cable. However, if it is necessary to fit an alternative supply
cable refer to Section 3.1 and release the cable clamp. Connect the new lead as follows:
Brown wire to L, Blue wire to N and Green/Yellow to
.
Note:
Ensure that the length of the earth wire is such that if the supply cable is pulled out of its clamp the live and neutral
wires become taut before the earth wire.
5.
Do not switch on the electrical supply at this stage.
Do not make any connections to terminals 4, 5, 6, or 7 and do not fit any other controls.
Fig. 17
