Italtherm CITY BASIC - Technical Data

34
f If the boiler draws directly from the installaon room (type B appliance installed indoor): Do not clean
the room where boiler is installed, while it is working
f Clean casing with soapy water only. Do not clean casing, other painted or plasc surfaces with thin-
ner.
f In any case of parts replacement, it is mandatory to use ITALTHERM original spare parts.



as prescribed by the regulaon in force.
Technical data
TECHNICAL DATA

City Basic 24 C
Gas type G20 G30 / G31
CE cercaon 0694 CM 3400
Class II
2H3+
Type B11/BS
Max heat input kW 25.7 25.7
Min heat input kW 9.9 9.9
Max heat output kW 23.1 23.1
Min heat output kW 8.6 8.6
NO
X
Class 2 1 / 1
CO at 0% O
2
(Qn) ppm 54.4 124 / 60.3
CO
2
at nominal input % 4.3 5.4 / 5.0
Flue temperature (Qn) °C 101 101 / 101
Flue mass ow rate (Qn) kg/h 86.6 79.1 / 85.0
EFFICIENCY
Nominal eciency % 90.0
Eciency at 30% load % 89.1

Temperature selecon range
(min÷max)
°C 35÷78
Expansion vessel l 8
Expansion vessel
pre-loading pressure
bar 1
Loss of water pressure switch
o / on pressure
bar
0.5 / 0.9
(±0.2)
To allow the correct system lling, the pressure of the domesc
water should be higher than the ON value of the pressure switch.
Max working pressure bar 3
Max system temperature °C 83
(follows)