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Heating and Air Conditioning - Technical Data BMW Z4 E89

64 50 Air conditioning system, amount of refrigerant E89

Refrigerant capacity R 134a (The data on the nameplate in the engine compartment are definitive) Sourcing reference for refrigerant in Electronic Parts CatalogueG550±10

AIR CONDITIONING SYSTEM, AMOUNT OF REFRIGERANT SPECIFICATION

64 51 Heating and air-conditioning unit (evaporator), switching elements

Resistance as a function of temperature° C/kohms5/11.4... 11.9 0/8.8... 9.2 5/6.8... 7.2 10/5.3... 5.6 15/4.2... 4.5 20/3.3... 3.6 25/2.6... 2.9 30/2.1... 2.3 35/1.7... 1.9

HEATING AND AIR-CONDITIONING UNIT (EVAPORATOR), SWITCHING ELEMENTS SPECIFICATION

64 51 Heating and air-conditioning unit (expansion valve), switching elements

Inlet pressure (excess pressure)Bar14
Outlet pressure (excess pressure)Bar1.8
Leak test with detector at excess pressureBar1... 2

HEATING AND AIR-CONDITIONING UNIT (EXPANSION VALVE), SWITCHING ELEMENTS SPECIFICATION