Annual Maintenance; Warnings; Dismantelling The External Panels; Emptying The D.h.w. System - Biasi Riva Combi Installation & Operation Instructions

17. Annual Maintenance

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.
Front Panel:
• Loosen the three screws
A (Fig. 17.1)
• Lift and remove the panel.
Side Panels:
• Loosen the screws B
(Figure 17.1) and C
(Figure 17.2). Bring the
bottom of the panels
away from the boiler and
lift them, freeing them
from the top hooks.
• Turn off the d.c.w. .
cold water inlet cock
(40 on Sections 4 and
14) and turn on the
hot water taps and
any drain cocks.
• Close the pressure
reducing automatic fill
valve (37 on Section
4)
• Open the central
heating drain cock (F
in Fig. 17.4).
• Loosen the d.h.w.
storage tank air purge
valve (G in Fig. 17.5)
RIVA COMBI MANUAL – REV B

17.1 Warnings:

17.2 Dismanteling the external panels:
Figure 17.1

17.3 Emptying the d.h.w. system:

• Turn on the storage
tank drain cock E in
Fig. 17.3 and empty
the d.h.w. tank.
17.4 Emptying the Central Heating System:
Figure 17.4
B
A
B
F
C
D
C
Figure 17.2
Figure 17.3
Figure 17.5
C
D
C
E
G
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