Access To The Sealed Chamber; Emptying The Primary Circuit - Biasi RIVA ADVANCE HE M110B.24SM/C Service Manual

Fig. 2.4
Remove the screws E and remove the service
5
panel (Fig. 2.5).
F
E
Fig. 2.5
6 Remove the screws F and remove the control
panel lid (Fig. 2.5).
2.4

Access to the sealed chamber

G
G
Fig. 2.6
General access and emptying hydraulic circuits
To gain access to the parts contained in the sealed
chamber it is necessary to remove the lid of the sealed
chamber.
For this purpose, remove the front and side panels of
the case, remove the screws G as indicated in Fig. 2.6
and remove the lid.
2.5

Emptying the primary circuit

1 Close the c.h. circuit flow and return cocks H.
(Fig. 2.7).
F
Fig. 2.7 --- bottom view of the boiler
2 Remove the front and right panels of the boiler.
Open the drain tap I (Fig. 2.9 combi or Fig. 2.10
3
only c.h.) until the boiler is completely emptied.
4 To help the draining of the primary circuit loose
the condensing heat exchanger air purger valve
J (Fig. 2.8).
Fig. 2.8
Attention: some water could remain in the condens-
ing heat exchanger.
5 Close drain tap once the emptying has been
completed.
K
J
H
3