BMW I01 Product Information page 144

I01￿High-voltage￿Components
8.￿Electric￿Heating
8.2.￿Operating￿principle
Heating￿for￿the￿passenger￿compartment￿in￿the￿standard￿equipment
Index
1
2
3
4
The￿coolant￿is￿heated￿up￿in￿the￿electric￿heating￿and￿circulated￿by￿an￿electric￿coolant￿pump￿(20 W).
The￿warm￿coolant￿flows￿through￿the￿heat￿exchanger￿in￿the￿passenger￿compartment￿and￿emits￿the
heat.￿The￿warm￿air￿finally￿reaches￿the￿passenger￿compartment￿by￿means￿of￿a￿blower.￿The￿refrigerant￿is
conveyed￿from￿the￿heat￿exchanger￿to￿the￿coolant￿expansion￿tank.
A￿mixture￿of￿water￿and￿a￿new￿coolant￿concentrate￿called￿"coolant￿concentrate￿i3"￿is￿used￿as￿a￿coolant.
The￿water￿and￿coolant￿concentrate￿are￿mixed￿in￿the￿ratio￿50:50.
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Explanation
Heat￿exchanger￿in￿the￿passenger￿compartment
Electric￿heating
Electric￿coolant￿pump￿(12 V)
Coolant￿expansion￿tank