ISO 23551-6:2014 pdf free

ISO 23551-6:2014 pdf free.Safety and control devices for gas burners and gas-burning appliances一Particular requirements
Shall be according to ISO 23550:2011, 7.2.2.2 with the following addition:
Pressurize the inlet and outlet(s) of the control to the test pressures given in 7.2.2.1. Before the test,closure parts which can be dismantled in accordance with 6.2.8 shall be dismantled and reassembled five times to the manufacturer’s instructions and the leakage rate for each of the mentioned conditions below is measured.
a) The control shall be operated such that all closure members in the control are in the open position.Any of the electrical sources can be used during the test. The inlet and outlet(s) of the control shall then be pressurized to the test pressure according to 7.2.2.1.
b) The test of a) shall then be carried out with the electrical source removed so that the main and pilot gas ways {for protected pilots) in the control are closed. The test of a) shall then be repeated with any spindle moved during ignition and held in the ignition position.
Test in the closed position the leakage of the de-energized control in the direction of gas flow, at the test pressures given in 7.2.2.1 and measure the leakage rate. If there is more than one closure member in the control, the test shall be repeated with each closure member in turn in the closed position, all the other closure members being fully open.
For controls equipped with a pilot burner outlet, this outlet shall be blocked. Test in the ignition position the leakage of the de-energized control in the direction of gas flow at the test pressures given in 7.2.2.1 and measure the leakage rate.
NOTE Specific regional requirements are given in Annexes F and G.
Using ignition interlock, verify that ignition can only take place when the pilot gas way is open and the closure member of the main gas way is closed. Thereafter, with the closure member of the main gas way opened, it shall not be possible to operate the ignition device.
To check a re-start interlock, energize the control with electrical means and bring the control in the normal operating position with closure member opened. Verify under these conditions that a re-start attempt is not possible as long as the closure member is in the open position.ISO 23551-6 pdf download.