14
Alpha SolarSmart 150 - Installation
4.7
FIT THE UNVENTED KIT - Fig. 14
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.
3.
Secure the expansion vessel to the mounting bracket using the metal band, nut, washers and bolt.
Note: Ensure the pressure in the expansion vessel is 2.5 bar. If it is not, adjust the pressure to give 2.5 bar.
4.
Connect the expansion relief valve to the expansion vessel as shown in Fig. 14.
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.
Fig. 14
4.8
FIT THE BOILER AND THE SOLAR VALVE
1.
Only an Alpha combination boiler may be
used with the SolarSmart 150 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.
15 and 16.
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. 16) 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.
Fig. 15
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