Access To The Sealed Chamber; Emptying The Primary Circuit; Emptying The D.h.w. Circuit - Biasi RIVA PLUS HE 24C ERP Service Manual

GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS
Figure 2 .4
5 Remove the screws E and remove the service panel (Figure
2.5);
6 To gain access to the electronic regulation PCB remove the
screws F and remove the control panel lid (Figure 2.5);
F
E
Figure 2 .5

2 .4 Access to the sealed chamber

G
G
Figure 2 .6
To gain access to the parts contained in the sealed chamber it is
necessary to remove the lid of the sealed chamber. For this pur-
pose, remove the front and side panels of the case, remove the
screws G as indicated in Figure 2.6 and remove the lid.
- 6 -

2 .5 Emptying the primary circuit

1 Close the c.h. circuit flow and return cocks.
2 Remove the front and right panels of the boiler.
3 Open the drain tap I (Figure 2.7) until the boiler is completely
emptied.
4 Close drain tap again once the emptying has been complet-
ed.
F
Figure 2 .7
2 .6 Emptying the d .h .w . circuit
5 Close the d.c.w. inlet cock;
6 Open one or more hot water taps until the boiler has been
completely emptied.
I