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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 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.
• 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)
• 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.
44
17.1 Warnings:
17.2 Dismanteling the external panels:
Figure 17.1
17.3 Emptying the Central Heating System:
17.4 Cleaning the primary heat exchanger:
A
A
RIVA HEAT ONLY MANUAL - REV B
C
C
B
B
B
Figure 17.2
F
Figure 17.3
B
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