Buderus Logano GE315 Installation And Maintenance Instructions Manual page 35

System start-up
2. Requirements Fluid Category 4 systems (fig see
right)
Control valve (stop valve) on the mains cold water
supply pipe
Strainer
Verifiable Backflow Prevention Device with reduced
pressure Zone (RPZ valve assembly) incorporating a
Type BA air gap
Tundish
Control valve (stop valve) on the heating system
pipework
Open the cap of the automatic air vent by one full turn
to allow air to escape.
Slowly fill the heating system. Observe the pressure
gauge whilst filling.
Close the water tap and the boiler drain valve once
the required operating pressure has been reached.
Bleed the system via the radiator bleed valves.
Top up with water if the pressure drops as a result of
bleeding the system.
Take the hose off the boiler drain valve.
SYSTEM DAMAGE
through frequent topping up.
The heating system may be damaged,
CAUTION!
depending on water quality, by
corrosion or scaling if you frequently
need to top-up the heating water.
Enquire from your installer, whether you can use your
public water untreated or whether you need to treat it
before filling your system.
Notify your installer, if you need to regularly add top-
up water to your system.
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Logano GE315 • Issue 02/2006
Fig. 51 Requirements Fluid Category 4 systems
3
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