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Installation
Logano GE615 - Subject to technical modifications.
25
4.12 Filling the heating system and checking for leaks
Before putting the heating system into operation, it must
be checked to ensure that no leaks will occur during
operation. Pressurise the heating system with a pressure
equal to the response pressure of the safety valve.
Fig. 33 Pressure gauge for sealed unvented systems
1 Red needle
2 Pressure gauge needle
3 Green band
B Fill the boiler and heating system via an WRAS
approved method.
B Slowly fill the heating system. Observe the display
(pressure gauge/hydrometer) while filling.
B Fill the heating system to the desired pressure
(e.g. 1.5 bar)
B Vent the heating system via the radiator bleed valves.
B Top up with water again if the operating pressure
drops as a result of bleeding the system.
Fig. 34 Hydrometer for open systems
1 Hydrometer needle
2 Green needle
3 Red band
NOTICE: System damage!
Temperature stresses can cause cracks if you
fill your heating system when hot. The boiler
will then leak.
B Only fill the system when cold (the flow
temperature should be no more than 40 °C).
B When the heating system is in operation, do
not fill it via the boiler fill & drain valve.
Instead, use an approved WRAS filling
method.
B Pay attention to the water quality as
specified in the operator's log, and record
the volume and quality of fill water used.
6304 4901-04.0K
25


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