Draining The Heating System; Condensate Siphon - Riello Residence KIS Series Installer And User Manual

The boiler is ready after the vent cycle.
-
using the bleed valves.
- Once again check that the system pressure is correct (ideally 1-1.5bar)
and restore the levels if necessary.
- If air is noticed when operating, repeat the vent cycle.
-
At this point it is possible to carry out any heat request.

3.17 Draining the heating system

Before draining, set the boiler to OFF and shut off the electrical supply
setting the system's main switch to "off".
- Close the heating system's taps (if present).
- Open the de-aeration tap (A
- Connect a pipe to the system discharge valve (C
-
discharge valve and close the system discharge (C
aeration (A taps again.
3.18 Emptying the domestic hot water circuit
Whenever there is risk of frost, the domestic hot water system must be
emptied in the following way:
- turn off the main water supply tap
- turn on all the hot and cold water taps
- drain the lowest points.

3.19 Condensate siphon

is empty.
- Slowly open the de-aeration tap (A
amount of water contained in the siphon reaches the ledge.
- Close the de-aeration tap (A
-
that the device allows the liquid to run off correctly.
- Check that the system pressure has not dropped below 1 bar. If
, then manually
the siphon for collecting the condensate
and leave it open until the
and de-
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