Biasi BASICA COND, Руководство пользователя и инструкции по установке, Страница: 79 / 88

- 79 -
MAINTENANCE
MAINTENANCE
sis check and adjustment if necessary as
described in the section "Gas valve - Ad -
justment - Chimney Sweep Mode" of the
Service manual.
Fig. 10.14
Flue analysis
points
• Make sure that the ambient thermostat is
in the position “call for heat”.
• Withdraw an abundant amount of D.H.W.
by opening the taps.
• Activate the “flue sweep function” at maxi -
mum heating power (see "Setting the
boiler flue sweep function" on page 80).
• Check the combustion of the boiler using
the outlets located on the flue tubes (Fig.
10.14) and compare the data measured
with that following.
Fig. 10.15
Model BASICA COND 24C - M275V.2024 SM
Nominal heat input
(A) (E)
kW 21,0
Nominal efficiency % 98,2
Combustion efficiency % 98,4
Air index n 1,2
Flue gas CO
2
content % 9,0 - 9,6
Flue gas O
2
content % 4,1
Flue gas CO content ppm 140
Flue gas temperature °C 82,0
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. 10.16
Model BASICA COND 28C - M275V.2428 SM
Nominal heat input
(A) (E)
kW 25,0
Nominal efficiency % 98
Combustion efficiency % 98,2
Air index n 1,2
Flue gas CO
2
content % 9,0 - 9,6
Flue gas O
2
content % 4,1
Flue gas CO content ppm 180
Flue gas temperature °C 85,0
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
Model BASICA COND 32C - M275V.2832 SM
Nominal heat input
(A) (E)
kW 27,5
Nominal efficiency % 98,2
Combustion efficiency % 98,4
Air index n 1,2
Flue gas CO
2
content % 9,0 - 9,6
Flue gas O
2
content % 4,1
Flue gas CO content ppm 190
Flue gas temperature °C 83,0
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.
The values in the tables are measured at
the nominal useful power with factory cali -
bration.
10.12 Checking the condensate
drain pipe
The condensate drain pipe 32 (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.