General access and emptying hydraulic circuits
4
K
K
N
Fig. 2.9 --- bottom view of the boiler
2
Remove the front and right panels of the boiler.
3
Open the drain tap
L
(Fig. 2.11) until the boiler is
completely emptied.
4
To help the draining of the primary circuit loose
the condensing heat exchanger air purger valve
M
M
Fig. 2.10
Attention: some water could remain in the condens-
ing heat exchanger.
5
Close drain tap once the emptying has been
completed.
L
Fig. 2.11
2.6
Emptying the d.h.w. circuit
6
Close the d.c.w. inlet cock
N
(Fig. 2.9);
7
Open one or more hot water taps until the boiler
has been completely emptied.