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a) Cold water line
b) Hot water line
c) Recirculation line
d) Flush valve cold
e) Flush valve hot
s) combination inlet group
7651255 - v.01 - 23052016
Operation:
Flushing connection set HFS 600-750 for flushing the corrugated stainless
steel coil to remove deposits of boiler scale
kW
max. 65 °C
See ISSO publication
55.1 section 4.2.3
Thermal management
concept
Hot water outlet
Cold water supply
Flush connection supply
Flushing provisions on the HFS:
The flushing provisions on the HFS must, in accordance with regulations,
consist of the following parts:
2 T-fittings, 2 shut-off valves
Installation: in the cold water line before the inlet on the HFS boiler and
on the hot water outlet.
The extra valves makes it possible to shut off the cold and hot water lines,
empty and inspect the corrugated stainless steel coil in the HFS boiler
and flush it with a suitable flushing agent if necessary.
After completion of these tasks, the cold water valve must be opened first
and the corrugated stainless steel coil must be flushed with clean water.
Only after flushing may the hot water line be opened again.
4 Installation
HFS 650 / HSF 700
11
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