INSTALLATION INSTRUCTIONS
TA05A140.A0307
39
6.5 Draining the central heating system
If the need arises to drain the system, this can
be done as follows:
•
Switch the system to “WINTER” mode and
ignite the boiler.
•
Switch off the power supply to the boiler.
•
Wait for the boiler to cool down.
•
Connect a hosepipe to the system drain
point and locate the other end of the hose in
a suitable drainage system.
•
Open the system drain valve (see fig. 1).
•
Open the air vents on the radiators, starting
with the highest and moving down the
system to the lowest.
•
When the system has been drained, close
the radiator breather valves and the drain
valve.
•
If only the boiler needs to be drained,
close the flow/return isolating valves on
the heating circuit and open the drain
valve located at the bottom of the boiler
on the pump manifold (see fig. 1);
Fig. 1
Содержание RK 25
Страница 2: ......