Automatic electrical controls - Part 2-5: Particular requirements for automatic electrical burner control systems
|Publication Date:||1 March 2021|
|ICS Code (Automatic controls for household use):||97.120|
• to a burner control system intended to be used in warm air heating appliances (furnaces) where the appliance is equipped with an electromechanical differential pressure control to monitor the difference of the combustion air pressure (Type 2.AL). This pressure control provides a switch as an alternative to one of the two switching elements to directly deenergize the safety relevant terminals.
This document applies to controls powered by primary or secondary batteries, requirements for which are contained within the standard, including Annex V.
This document applies to the electrical and functional safety of controls capable of receiving and responding to communications signals. The signals may be transmitted to or received from external units, connected wired or wireless, that may or may not be part of the burner control system.
This document does not address the integrity of the output signal to the network devices, such as interoperability with other devices, unless it has been evaluated as part of the control system.