Working on the heating system
2
11
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
2.
Requirements Fluid Category 4 systems (fig see
right)
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Control valve (stop valve) on the mains cold water
supply pipe
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Strainer
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Verifiable Backflow Prevention Device with reduced
pressure Zone(RPZ valve assembly) incorporating a
Type BA air gap
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Tundish
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Control valve (stop valve) on the heating system
pipework
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Open the cap of the automatic air vent by one full turn
to allow air to escape.
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Slowly fill the heating system. Observe the pressure
gauge whilst filling.
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Close the water tap and the boiler drain valve once
the required operating pressure has been reached.
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Bleed the system via the radiator bleed valves.
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Top up with water if the pressure drops as a result of
bleeding the system.
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Take the hose off the boiler drain valve.
Fig. 8
Requirements Fluid Category 4 systems
CAUTION!
SYSTEM DAMAGE
through frequent topping up.
The heating system may be damaged,
depending on water quality, by corrosion
or scaling if you frequently need to top-up
the heating water.
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Enquire from your installer, whether
you can use your public water
untreated or whether you need to treat
it before filling your system.
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Notify your installer, if you need to
regularly add top-up water to your
system.
