BS 5990:2006 pdf download.Specification for directgas-fired forced convection air heaters with rated heat inputsgreater than 330 kW butnot exceeding 2 MW forindustrial and commercial space heating - Safetyand performance requirements.
6.2 Preparation of appliance for test
The appliance shall be set up in aecor(lanee with the manufact iirers instructions, with particular reference to minimum declared clearances rouiid the appliance. It shall then be adjusted in accordance with the manufacturers Inst ruct ions using the test gas G20 at an inlet pressure of 17.5 riihar’.
Before any tests are made, the appliance shall be operated at its maximum rated heat input, using normal distnbuted gas, for a period sufficient to dry any insulation and remove any temporary finish that might interfere with observations.
6.3 Test procedure
The appliance shall be examined for gas soundness before and after the tests specified in this standard.
The test results shall be deemed to be invalid unless the gas system is sound.
The appliance shall be at room temperature at the stati of each test unless the test method specifies otherwise.
During testing, the initial adjustment of the appliance shall not be altered unless specifically required by the test method.
Precautions shall be taken to prevent thermostats or other variable controls from acting so as to interfere with the gas (low, except as necessitated by the test.
Gas test vresiires shall be accurate to within ± 0.2 m bar and so controlled that the variation does not excee(l ± 0.2 mbar.
lii general, except for tests involving governor perfornuuwe, the appliance governor may be put out of action and the specified test pressure obtained by adjustment of the gas pressure at the inlet to the appliance.
The heat input to the appliance shall he determined as speeified in 6.3.2 of BS EN 525:1998.
7 Design and construction
7.1 All appliances.
The appliance shall be set up in aecor(lanee with the manufact iirers instructions, with particular reference to minimum declared clearances rouiid the appliance. It shall then be adjusted in accordance with the manufacturers Inst ruct ions using the test gas G20 at an inlet pressure of 17.5 riihar’.
Before any tests are made, the appliance shall be operated at its maximum rated heat input, using normal distnbuted gas, for a period sufficient to dry any insulation and remove any temporary finish that might interfere with observations.
6.3 Test procedure
The appliance shall be examined for gas soundness before and after the tests specified in this standard.
The test results shall be deemed to be invalid unless the gas system is sound.
The appliance shall be at room temperature at the stati of each test unless the test method specifies otherwise.
During testing, the initial adjustment of the appliance shall not be altered unless specifically required by the test method.
Precautions shall be taken to prevent thermostats or other variable controls from acting so as to interfere with the gas (low, except as necessitated by the test.
Gas test vresiires shall be accurate to within ± 0.2 m bar and so controlled that the variation does not excee(l ± 0.2 mbar.
lii general, except for tests involving governor perfornuuwe, the appliance governor may be put out of action and the specified test pressure obtained by adjustment of the gas pressure at the inlet to the appliance.
The heat input to the appliance shall he determined as speeified in 6.3.2 of BS EN 525:1998.
7 Design and construction
7.1 All appliances.
