User`s manual

INSTALLERUSERTECHNICIAN
2727
Control temperature at domestic water flow rate at 8
l/min. and input temperature of 15°C.
Flue temperature values refer to air inlet temperatures
of 15°C.
N.W.: Pressure values specified in the table indicate
the difference of pressure values between the gas
valve outlet and the combustion chamber. Adjust-
ments are therefore carried out with the differential
pressure gauge ( “U” or digital type) with the sensors
inserted in the test pressure outlet of the modulating
adjustable gas valve and on the sealed chamber posi-
tive pressure test outlet . Power data specified in the
table refer to a 1 metre intake/exhaust pipe. Gas flow
rates refer to heat power below temperature of 15°C
and at a pressure of 1013 mbar. Burner pressure
values refer to use of gas at 15°C.
3.14 Zeus 21 Maior technical data.
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Nominal heat output
Min. heat output
Nominal heating power (useful)
Min. heating power (useful)
Useful thermal effic. at nominal output
Useful thermal effic. at 30% load of nominal power
Heat loss at shell with burner On/Off
Heat loss at flue with burner On/Off
Nozzle diam.
Supply pressure
Max. working pressure heating circuit
Max. working temp. heating circuit
Adjustable temp. heating
Expansion tank total volume
Expansion tank preload
Water contained in boiler
Available head with flowrate 1000 l/h
Useful heat output hot water production
Adjustable temp. domestic hot water
Flow limiter
Min. pressure (dynamic) domestic circuit
Max. working pressure domestic circuit
Min. drawing domestic hot water
Specific delivery (∆T 30° C)
Specific delivery in cont. duty (∆T 30° C)
Boiler weight filled
Boiler weight empty
Electrical connection
Nominal absorption
Installed electrical power
Power absorbed by circulating pump
Power absorbed by fan
Equipment electrical system protection
Delivery in weight of fumes at nominal output
Delivery in weight of fumes at min. output
CO2 at Q Nom./Min
CO at 0% 02 at Q Nom./Min
NOx at 0% 02 at Q Nom./Min
Temp. fumes at nominal output
Temp. fumes at min. output