Biasi Riva Plus, Installation And Operation Instructions Manual

Page: 44 / 52

Riva Plus Manual 44
17.1 Warnings:
The procedures detailed in this chapter must be carried out only by a professionally qualified
person. Thus you are advised to contact an Authorised Service Agent. For efficient and
continuous operation of the boiler you are advised to have, at least once a year, maintenance
and cleaning done by an Approved Service Person. Isolate the appliance from the electricity
supply by turning off the fused spur isolation switch adjacent to the appliance and turn off the
gas cock, before carrying out any procedures, whatsoever, for cleaning, maintenance,
opening or dismantling boiler panels.
17.2 Dismanteling the external panels:
Front Panel:
•
Loosen the screws A
(Fig. 17.1)
•
Lift and remove the
panel.
Side Panels:
•
Loosen the screws B
(Figure 17.2). Bring the
bottom of the panels
away from the boiler
and lift them, freeing
them from the top
hooks.
A
A
Figure 17.1
B
B
C
C
B
B
Figure 17.2
17.3 Emptying the Central Heating System:
•
Close the pressure reducing automatic fill valve (28 on
Section 4)
•
Open the central heating drain cock (F in Fig. 17.3).
•
Empty the c.h. system.
•
Close the central heating drain cock (F in Fig. 17.3).
•
Open the pressure reducing automatic fill valve (28 on
Section 4)
F
Figure 17.3
17.4 Cleaning the primary heat exchanger:
•
Take off the front panel of the case, then the sealed chamber lid and the front panel of the
combustion chamber.
If you notice dirt on the fins of the primary heat exchanger (9 on page 10), cover the sloping
surfaces of the burner (7 on page 10) entirely in a protective layer (sheets of newspaper or
similar). Brush out the primary heat exchanger (9 on page 10) with a bristle paintbrush.
17. Annual Maintenance