Radiant RK 34/B Ekobox, Инструкция по эксплуатации

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INSTALLATION INSTRUCTIONS
21
4.2 Filling the system
Check the properties of the water supply and install the
appropriate treatment devices if the mains water has a
hardness rating more than 17.5 °Ck in order to prevent scaling
and eventual damage to the D.H.W heat exchanger.
Use only clean tap water to fill the system.
Once the water pipes have been connected, close the gas feed valve
and fill the system as follows:
•
Check that the circulation pump runs freely;
•
Check that the plug of the air vent valve has been slackened slightly
to allow air to escape from the system (fig.1);
•
Open the main domestic water supply valve;
•
Open the filling tap R (fig. 2);
•
Unscrew the plug on the pump to remove any trapped air, check
that the pump is free then re-tighten it when water starts to flow out
(fig.1);
•
Before switching on the boiler, purge air completely from the
air vent valve positioned on the top of the condensing
exchanger (fig.3)
•
Open the air vents on the radiators and monitor the air evacuation
process. When water starts to flow out of the radiators, close the air
vents;
•
Use the pressure gauge M (fig. 2), to check that the systems
pressure reaches the middle of the green area (equal to 1,2 bar,
see fig. 4).
•
On completion, make sure that the filling tap R is perfectly
closed.
3
2
1
4
3 bar
1.5 bar
0.5 bar
1.2 bar
GREEN AREA
R M
AIR VENT VALVE
AIR VENT VALVE PLUG
PUMP PLUG