Boiler Heat Exchanger - Adisa ADI CD 70 Technical Manual Of Installation, Use And Maintenance

ADI CD boiler - Technical Manual

7. BOILER HEAT EXCHANGER

The ADI CD boilers use gas to heat water for closed heating circuits
and/or DHW primary circuits.
The boiler heat exchanger (where takes place the heat transfer from
flues to water) is made of stainless steel: it is a stainless steel enriched
with a special alloy (for a better resistance to corrosion and to high
temperatures).
The boiler heat exchanger consists of 2 water collectors, an upper one
and a lower one, connected by means of multiple vertical tubes forming
the combustion chamber. The vertical tubes generate a big heat
transfer surface that uses the sensible heat of the flues.
During the manufacturing process, the boiler is subjected to a strict
quality control, carried out through a process of three leak tests: one
with penetrant liquids, another one with air pressure and the last one
with water pressure.
The boiler heat exchanger is insulated.
Several manual vents are installed in the higher part of the boiler for the
air venting of the boiler.
Front and rear view: models ADI CD 175 and lower. Front and rear view: models ADI CD 200 and higher.
Without rear casing, simple casings
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