Ariston Water Heater Accossories
If it is not possible to accommodate the expansion in the existing pipe work, then it is necessary to use an expansion vessel and no-return valve (KIT A)
if the mains water pressure exceeds 3.5bar a pressure reducing valve (Kit B) should be also installed, the DIscharge from relief valve must be make in a safe
and conspicuous manner, therefore a Tundish (KIT C) is available for 10 and 15 litre units if required