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3.8

Connection of Mains

Water Supply

For floor standing models:

On the front of the unit there is a label to identify the connection ports.

Please check this before making any connection to the unit.

For units up to 300 litres it is recommended that all mains cold water supply

pipe work is a minimum of 22mm, with the exception of model ST 50

ProTech where 15mm can be used. For 500 litre models the supply should

be 28mm. An isolating valve should be installed between the cold water

supply and the cylinder for servicing. ALL PIPEWORK MUST BE FLUSHED

TO AVOID DAMAGE TOTHE CONTROL VALVES.

Please refer to Figs. 3.1 - 3.7 for a suggested installation layout.

Draining taps must be located in acessible postions to permit the draining of

the whole cylinder. The taps must be a minimal size of at least 15mm

nominal size (preferably 22mm), and manufactured in accordance with BS

2879:1980.

When installing the expansion vessel it can either be connected directly to

the combination valve (see Figs 3.8 - 3.10), or it can be installed remotely

using the flexible hose supplied.

Important Note:-

When installing the expansion vessel, do not install the expansion vessel

vertically as air can become trapped in the expansion vessel resulting in

potential vibrations through the cylinder and pipework. When using the

flexible hose to remotely install the expansion vessel away from the control

valve, again, ensure that the vessel is not installed in a vertical position

where it can trap air.

See below for acceptable installation practices.

A □□