ISO 23550 pdf download

ISO 23550 pdf download Safety and control devices for gas burners and gas-burning appliances — General requirements
This International Standard specifies safety, constructional and performance requirements and testing ofsafety control or regulating devices and sub-assemblies or fitings (hereafter referred to as controls) forburners and gas-burning appliances using such fuel gases as natural gas, manufactured gas or liquefiedpetroleum gas (LPG). It is not applicable to corrosive and waste gases
This International Standard is applicable to the following controls:
automatic shut-off valves;
burner controls;
flame supervision devices.
gas/air ratio controls;
pressure regulators,
manual taps;
mechanical thermostats
multifunctional controls;
pressure-sensing devices.
valve-proving systems,
zero regulators.
The test methods given in this lnternational Standard are intended for product type testing. Tests intended forproduction testing are not specifically included.
NOTEThis lnternational Standard is intended to be used in conjunction with the specific control standards of theISO 23551 series.
2 Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument(including any amendments)applies.
SO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerancesand designation
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions.tolerances and designation
SO 262, ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
ISO 301, Zinc alloy ingots intended for castings
ISO 1817:1985, Rubber, vulcanized — Determination of the effect of liquids
ISO 7005 (all parts), Metallic flanges
IEC 60730-1:1999, Automatic electrical controls for household and similar use – Part 1: Generalrequirements
IEC 61000-4-2，Electromagnetic compatibility (EMC)- Prt 4-2: Testing and measuring techniques -Electrostatic discharge immunity test
EC 61000-4-3,Electromagnetic compatibility (EMC)- Pat 4-3: Tsting and measuring techniques -Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4,Electromagnetic compatibility (EMC)- Part 4-4: Testing and measurement techniques -Electrical fast transient/burst immunity test
IEC 61000-4-5,Electromagnetic compatibility (EMC)- Part 4-5: Testing and measurement techniques -Surge immunity test
IEC 61000-4-6,Electromagnetic compatibility (EMC)- Part 4-6: Testing and measurement techniques -Immunity to conducted disturbances, induced by radio-frequency fields
EC 61000-4-8,Electromagnetic compatibility (EMC)- Part 4-8: Testing and measurement techniques -Power frequency magnetic field immunity test
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement techniques -Voltage dips, short interruptions and voltage variations immunity tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
breather holeorifice which allows atmospheric pressure to be maintained within a compartment of variable volume
3.2
closure membermovable part of the control which shuts off the gas flow
3.3
control
device which directly or indirectly controls the gas flow and/or provides a safety function within a gas burner orgas-burning appliance