Integrated into UN R122 as Amendment 3 as of 15 August 2012.

Proposal to exempt any heaters (and not only combustion heaters as in the current text) located outside the passenger compartment and using water as a transfer medium are deemed to comply with the annexes on air quality and temperature.

Proposal to exempt all heaters located outside the passenger compartment and using water as a transfer medium from the requirements of the annexes on air quality and temperature. The current text only exempts combustion heaters.

Proposal to exempt all heaters located outside the passenger compartment and using water as a transfer medium from the requirements of the annexes on air quality and temperature. The current text only exempts combustion heaters.

Proposal to introduce provisions for interior heating systems using heat pumps.

Proposal to clarify the requirements for electric heaters by limiting possibilities for exemptions applicable to interior heating systems supplied by several electrical elements.

This proposal introduces transitional provisions into UN Regulation No. 122 should the proposals in document GRSG/2018/21 be adopted. GRSG/2018/21 would change the technical requirements for vehicles equipped with heat pump heating systems and therefore, transitional provisions would be applicable.

Proposal to add a missing footnote concerning the exemptions for heaters located outside the passenger compartment using water as a transfer medium and to clarify that it is not necessary to apply Annex 4 for the heat pump because the heat transfer fluid does not contain polluting air.

Proposal to add a missing footnote concerning the exemptions for heaters located outside the passenger compartment using water as a transfer medium and to clarify that it is not necessary to apply Annex 4 for the heat pump because the heat transfer fluid does not contain polluting air.

Proposal to add a missing footnote concerning the exemptions for heaters located outside the passenger compartment using water as a transfer medium and to clarify that it is not necessary to apply Annex 4 for the heat pump because the heat transfer fluid does not contain polluting air.

Proposal to introduce a new definition for “radiant warmer”, to exclude such devices from the definition of “electric heater”, and to add a new safety requirement that such warmers must turn off immediately if there is contact with a vehicle occupant’s skin.

Proposal to align UN R122 to technological progress concerning the use of radiation warmers in electric vehicles. The radiation warmer is expected to increase energy efficiency of EV and is also able to prevent the sharp reduction of All Electric Range (AER).

Proposal to amend the draft text to introduce provisions for radiant warmers into the regulation.

Proposal to introduce provisions for radiant warmers.