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.

74. The expert from CLEPA presented GRSG-116-22 to add a missing reference to the existing note 2 and to clarify the application of Annex 4 for heat pumps. The expert from France raised a study reservation. GRSG agreed to resume consideration of this subject at its next session and requested the secretariat to circulate GRSG-116-22 with an official symbol.