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4.6
FIT THE UNVENTED KIT - Fig. 13
1.
Unpack Box 3 and check the contents.
2.
Locate the expansion vessel mounting bracket in a suitable position as close to the solar cylinder as possible and secure
in postion using the srews and wall plugs supplied.
Note: Ensure there is enough space to fit/remove the bottom cover.
3.
Secure the expansion vessel to the mounting bracket using the metal band, nut, washers and bolt.
4.
Connect the expansion relief valve to the expansion vessel as shown in Fig. 13.
Notes: a. The plug must be removed from the capped connection on the expansion vessel relief valve to enable
connection to the expansion vessel.
b. Mount the valve in either the horizontal or vertical orientation. An inverted orientation may allow debris deposits
onto the valve seating and cause the valve to malfunction.
c. Ensure the valve is mounted correctly, i.e. the arrow marking on the valve body is pointing in the direction of flow.
5.
Connect the mains water supply to the pressure reducing valve and thoroughly flush out the water pipework.
Refer to Domestic Hot Water System, Sections 3.2 and 3.3.
4.7
FIT THE BOILER AND THE SOLAR VALVE
1.
Only an Alpha combination boiler may be used with the SolarSmart 90 system. Install the boiler as described in the
instructions supplied with the boiler.
2.
Connect the solar valve directly to the boiler
cold water inlet connection, then connect the
pipework to the solar valve as shown in Figs.
14 and 15.
Notes: a. If the valve is being fitted to an
existing boiler installation, the
mains water inlet must be re-routed
to the inlet of the solar cylinder's
unvented kit.
b. Ensure that the hot water outlets 'B'
and 'D' (Fig. 15) are connected
together after the leaving the boiler.
c. It is recommended that a
thermostatic mixing valve is fitted in
the hot water outlet before the taps.
3.
The pressure relief valve discharge pipe 'F' (Fig.
15) will need to be modified as shown, i.e. extend
the length of the pipe leaving the safety valve
outlet by 50 mm using a straight connector and
a piece of 15 x 50 mm copper pipe.
Fig. 13
Fig. 14
Alpha SolarSmart 90 - Installation
15
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