#
WATER HEATER SYSTEM DIAGRAM

BME074000000T05

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1 | Radiator
2 | Engine (MZR-CD (RF Turbo))
3 | Water heater unit
4 | Heater core
5 | Fuel pump (water heater system)
6 | Fuel tank
7 | Water heated by engine
8 | Water heated by water heater unit
9 | Cold water
10 | Fuel

## Block Diagram

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1 | PCM
2 | Water heater unit
3 | CPU
4 | Fuel pump (water heater system)
5 | Blower fan
6 | Glow plug
7 | Water temperature sensor (built into water heater unit)
8 | Flame detection sensor
9 | Crankshaft position (CKP) sensor signal
10 | Intake air temperature (IAT) sensor No. 2 signal