27.08.2018
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EVO S -
Installation and Servicing
Single boiler
DHW production with hygiatherm
Diagram
VF23
page 1 / 5
A. HYDRAULIC DIAGRAM
figure 29 -
VF23 diagram
The boiler operates at the flow temperature required to produce the domestic hot water.
The flow rate of the pump, in m
3
/h, is adjusted to the real needs of the installation and, as a minimum, to
P/25, with P power in th/h of the boiler.
The pump heating will have to allow to work in constant speed to insure the minimum flow necessary for
the generator.
The domestic hot water production system has its own regulator.
A sensor QAZ 36, inside the primary tank, and connected to the generator, is used to restart the boiler
more quickly, especially when the base primary temperature is low.
