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MAINTENANCE
MAINTENANCE
9.8 Cleaning the burner
The ramp and multi-gas type burner does not
require any special maintenance, simply dust
it off using a bristle brush. More specific main
-
tenance for this component will be assessed
and performed by a technician from an autho-
rised service centre.
9.9
Controlling the flue gas exhaust
duct
Have a technician from an authorised service
centre periodically check the condition of the
flue gas exhaust duct, the air duct and the ef
-
ficiency of the flue gas safety circuit (at least
once a year).
To check the vacuum of the Venturi, use the
tapping points indicated in Figure 9.6.
Figure 9.6
Refer to the following table for the minimum
pressure value for the Venturi:
Figure 9.7
M290E.24CV model
Minimum Venturi pressure
Pa
76
mbar 0.76
M290E.28CV model
Minimum Venturi pressure
Pa
111
mbar 1.11
M290E.32CV model
Minimum Venturi pressure
Pa
149
mbar 1.49
9.10
Checking boiler efficiency
Carry out performance checks at the intervals
anticipated by the regulations in force.
• Make sure that the room thermostat is in the
“heat request” position.
• Draw off an abundant amount of DHW by
opening the cocks.
•
Activate the “chimney sweep function” at
maximum output in DHW mode (see "Set-
ting the boiler's chimney sweep function" on
page 60)
•
Check boiler combustion using the flue gas
outlet on the flue gas exhaust pipe near the
boiler and compare the data measured with
those below.
Figure 9.8
Model L1P26-LUCA 24 S
Nominal heat input
kW
25,5
Nominal efficiency
%
92,8
Combustion efficiency
%
93,7
Air index
n
1,7
Composition of CO2 fumes
%
6,9
Composition of O2 fumes
%
8,6
Flue gas temperature
°C
123
Values refer to tests with 60/100 1 m concentric
discharge and Methane gas G20 and with heating
delivery/return temperature of 60°/80°C
Figure 9.9
Model L1P31-LUCA 28 S
Nominal heat input
kW
31,1
Nominal efficiency
%
93,3
Combustion efficiency
%
94,8
Air index
n
1,5
Composition of CO2 fumes
%
7,6
Composition of O2 fumes
%
7,3
Flue gas temperature
°C
111
Values refer to tests with 60/100 1 m concentric
discharge and Methane gas G20 and with heating
delivery/return temperature of 60°/80°C
Summary of Contents for RINNOVA CV Series
Page 1: ...User manual and installation instructions RINNOVA CV...
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