ONORM EN 304 : 2018
Current
The latest, up-to-date edition.
HEATING BOILERS - TEST CODE FOR HEATING BOILERS FOR ATOMIZING OIL BURNERS
01-12-2013
Foreword
1 Scope
2 Normative references
3 Principles of tests
4 Measuring instruments and methods
5 Tests
5.1 Determination of the heat output and the
efficiency of the boiler
5.2 Determination of the rated heat output
5.3 Determination of the boiler efficiency (direct
method)
5.4 Test operation
5.5 Calculation
5.6 Determination of the waterside resistance
5.7 Determination of the standby loss
5.8 Functional test for the temperature thermostat
control and system limit thermostat control on the
boiler
5.9 Surface temperature
5.10 Floor temperatures
5.11 Emission values of NOx and CO
6 Test report and other documents
Annexes
A Measurements (normative)
B Applicable symbols and units (informative)
C Performance tests (informative)
D Criteria for the adaptation of atomizing oil
burners to heating boilers for liquid fuels
(informative)
E Hints for setting up and evaluation of the test rig
(informative)
F Determination of the heat losses from the test rig
and the heat contributions of the circulating pump of
the test rig (informative)
G Determination of the time t1 (informative)
ZA Clauses of this European Standard addressing essential
requirements or other provisions of EU Directives
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