Riello 908T4 - Firing Rates (Version TC); Test Boiler

11
20160576
GB
Technical description of the burner
4.9 Firing rates (version TC)
The MAXIMUM OUTPUT must not be greater than the maximum
limit of the diagram.
RX 180 S/PV = 180 KW G20 - G25 - G31
RX 250 S/PV = 250 KW G20 - G25 - G31
The MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram.
RX 180 S/PV = 30 KW G20 - G25
= 35 KW G31
RX 250 S/PV = 42 KW G20 - G25
= 50 KW G31
The IGNITION OUTPUT must be selected within:
– area A for gas G20 - G25;
– area B for gas G30 - G31.
4.10 Test boiler
The firing rates were set in relation to special test boilers, accord-
ing to EN 676 regulations.
The burner-boiler combination does not pose any problems if the
boiler is EC type-approved.
If, however, the burner is to be used with a commercial boiler that
has not been EC approved and/or its combustion chamber di-
mensions are distinctly smaller, consult the manufacturer.
It is not advisable to use this burner for boilers with a frontal cir-
culation of the flue gases.
WARNING
The firing rate (Fig. 4) has been obtained at an
ambient temperature of 20°C, at a barometric
pressure of 1013 mbar (about 0 m a.s.l.).
A
A
B
B
Heat output - kW
RX 180 S/PV
RX 250 S/PV
Firing rate G20-G25
Firing rate G31
Firing rate G20-G25 Firing rate G31
20160389
Heat output - kW
Fig. 4
Pressure in
combustion chamber - mbar
Pressure in
combustion chamber - mbar