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page 67 and check that the expansion
vessel pressure is not less than 1 bar.
If the pressure is less, see to correct pres-
surisation.
10.8 Checking the flue system
Have the integrity of the flue outlet and air
intake pipe, checked periodically, at least
once a year. For all the above maintenance
operations it is advisable to call an approved
Service Engineer.
10.9 Combustion analysis check
It is compulsory to conduct a combustion
analysis. Remove the plug as indicated in
Fig. 10.16 and carry out combustion analy-
sis check and adjustment if necessary as
described in the section "Gas valve - Ad-
justment - Chimney Sweep Mode" of the
Service manual.
Fig. 10.16
• Make sure that the ambient thermostat is
in the position "call for heat".
• Activate the "flue sweep function" at maxi-
mum heating power (see "Setting the
boiler flue sweep function" on page 71).
• Check the combustion of the boiler using
the outlets located on the flue tubes (Fig.
10.16) and compare the data measured
with that following.
- 70 -
MAINTENANCE
Flue analysis
points
Model RINNOVA ADAPTIVE 30S - M300V.30 SR
Nominal heat input
(A) (E)
Nominal efficiency
Combustion efficiency
Air index
Flue gas CO
content
2
Flue gas O
content
2
Flue gas CO content
Flue gas temperature
Values refer to tests with a an 80 mm double exhaust
split by 1 + 1 m and natural gas G20 and a supply /
return heating temperature of 60°/80°C.
Fig. 10.17
The values in the tables are measured at
the nominal useful power with factory cali-
bration.
10.10 Checking the condensate
drain pipe
The condensate drain pipe 29 (Fig. 10.18)
does not require any particular mainte-
nance but just check:
• That no solid deposits have formed, if so
remove them.
• That the condensate drain piping is not
clogged.
To clean the inside of the siphon, remove it
and turn it upside down to remove any dirt.
kW
31,0
%
98,8
%
99
n
1,7
%
8,5 - 9,5
%
4,8
ppm
200
°C
78,0
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