Atag iSteel 120, Руководство по установке

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iSteel is capable of delivering over 50 litres per minute when connected to a suitable mains supply. The high quality inlet
control set with its 3 bar operating pressure has been designed to make the most of what is available however the
performance of any unvented system is only as good as the water supply.
In unvented systems both hot and cold services are supplied simultaneously from the mains so the maximum possible
on-site water demand must be assessed and the water supply should be tested to ensure it can meet these requirements.
If necessary consult the local water supplier regarding the likely pressure and flow rate availability.
It is important that site pressure readings are taken under dynamic flow conditions, high pressures under zero flow
conditions are not necessarily indicative of satisfactory performance. A minimum of 1.5 bar at 20 l/m flow should be
available. Where mains inlet pressures are likely to exceed 16 bar then an additional upstream pressure reducing device
should be fitted.
A minimum of 22mm supply pipe-work should ideally be provided and existing 1/2” (15mm) cold mains pipe-work may
need to be upgraded. Hard water treatment should be considered in areas where content it greater than 200ppm, if
required adjust cylinder temperature to below 60 degrees.
SITING THE UNIT
iSteel can be positioned more or less anywhere in the dwelling but it should be remembered that for every 1 metre that
an outlet is above the iSteel, the pressure will be reduced by 0.1 bar. If siting outside the heated envelope of the dwelling
such as in a garage or outbuilding then frost protection should be provided and exposed pipework should be insulated.
iSteel must be supported on a flat base capable of supporting the weight of the cylinder when full. The minimum
recommended cupboard size is 650mm square.
It’s important that consideration is given to access for maintenance of the valves. The immersion heaters are 375 mm
long and access space should be provided for possible future replacement, also adequate access to remove and re-install
the cylinder in the event of a problem.
SCHEMATIC