GAH Electrastream User And Installation Instructions Manual page 24

Note
As Electrastream Plus is a sealed system,
the pressure at the taps is not affected by
the height of the cold water storage.
GAH offer a range of quality Water
Softeners, for information contact
GAH (HEATING PRODUCTS) LTD.
4-3.4 Hot Water Expansion Vessel
An Expansion Vessel is supplied for the hot water system, this should be fitted to the
combination valve which has a ¾ BSP port provided for this. The expansion vessel must
always be open to the system with NO shut off or isolation valves in the connection pipe.
4-3.5 Accumulator (Electrastream Plus only)
The accumulator may be installed at any convenient location within the dwelling,
outhouse, garage, loft or basement.
In normal circumstances the accumulator should be installed vertically. Where this is not
possible 100 model accumulators can be installed horizontally by supporting it in a
cradle and ensuring provision is made to make it fully drainable.
The floor must give adequate support to the filled accumulator.
Accumulators must have frost protection when they are installed where low temperatures
could be a potential problem - see 1-2.7.
Note that space is required to the top of the vessel to access the pressure valve.
Provision must be made to enable the accumulator to be drained when required.
IMPORTANT The accumulator is supplied at 2 Bar pressure. It is
recommended to set the pressure at 1.5 Bar below the mains pressure
with a minimum of 0.5/0.8 Bar - see 5-1.2.
4-3.6 Scale Protection
IMPORTANT All installations should have a scale protection device fitted
and in areas known to have hard water, a water softening device is
strongly recommended. The cylinder is not guaranteed against damage
caused by scale.
GAH recommend and promote the use of scale prevention devices and water softeners in
areas that are known to have hard water. Installed correctly they prolong the life of
equipment and help prevent limescale formation in the pipework. Water Softeners
provide the advantages of soft water, as well as preventing scale build up on taps and
shower heads.
Water softeners and any mains fed system must be of adequate capacity and should be
installed with suitably sized hoses to prevent any possibility of flow reduction.
The location and position of the Scale Protection Device or Water Softener should be as
the manufacturers recommendations.
4-3.7 Pipework
When all pipework has been installed, disconnect from the Electrastream components
and flush all pipework thoroughly.
When connecting to existing pipework remove all unwanted components, create new pipe
runs then flush thoroughly before connecting to the Electrastream components.
4-3.8 Electrastream Components
All Electrastream components and pipework are checked at the factory prior to dispatch,
however always check the connections for leaks on commissioning as transportation and
installation can cause joints to move.
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