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Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
We reserve the right to make any changes due to technical modifications.
Boiler installation7
7.2 Connecting the heating system
Fig. 8 Low-water cut-off installation
1 Boiler
2 Radiator
3 Heating system with low-water cut-of
4 Heating system without low-water cut-off
1
2
2
1
2
2
2
2
3
4
CAUTION!
BOILER DAMAGE
Due to moisture.
z Protect the components of the gas igni-
tion system from moisture (dripping,
spray, rain) during installation of the
boiler, during operation and during
maintenance work (such as replacing
the pump, replacing the control, etc.).
CAUTION!
SYSTEM DAMAGE
Due to overheating as a result of a low wa-
ter condition.
z Note that a boiler installed above the
level of the heating system must be
equipped with a low-water cut-off. The
low-water cut-off must be installed dur-
ing installation of the boiler and placed
above the water level in the boiler with-
out any means of shutting the water off
between the boiler and low water
cut-off (Î Fig. 8).
CAUTION!
SYSTEM DAMAGE
Due to high temperature variations in the
heating system.
z If the boiler is operated in connection
with a refrigeration system, make sure
that the pipes for the refrigerated liquid
are connected in parallel to the boiler
system with suitable valves to prevent
the refrigerated liquid from entering the
boiler.
z The piping system of a boiler connect-
ed to the heating coils of hydro-air heat-
ing systems that may be exposed to the
circulation of cooled air must be
equipped with a flow-control valve or
some other automatic system for pre-
venting the boiler water from circulating
by gravity during the cooling cycle.
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