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DESCRIPTION
The fuel fired heater has been applied to the diesel engine (CRDi) to increase heating capability by using
diesel only in cold weather.
a. Follow the procedures specified in this bulletin during service or it may cause personal injury.
b. Be sure to turn the fuel fired heater off when refueling at station.
c. The fuel fired heater must be mounted at designated position, never in the passenger
compartment.
d. The fuel fired heater must be kept below 120°C or a permanent failure on the components may
occur.
e. Operational principle : The following 3 conditions should be met at the same time for automatic
operation of the fuel fired heater.
- Engine runs.
- Ambient temperature is lower than 2°C (Winter)
- Coolant temperature is lower than 68°C
f. Cleaning process
- A cleaning process of the fuel fired heater will be performed automatically when the heater is not
operated due to increase of coolant temperature and ignition off.
- During cleaning process, supplied fuel in the heater will be burnt completely and any smoke will
be expelled.
It is a necessary process for next operation and durability of the heater and takes about 3 minutes.
g. Others
The following symptoms should be explained to customers or technicians as a normal occurrence.
- A white smoke may come out from the fuel fired heater exhaust pipe installed at the front side of
the right front tire during operation of the heater.
This is not an exhaust fumes.
When moisture in the fuel and air is discharged from the heater and is met cold ambient air, it is
condensed and looks like a white smoke.
However, when an excessive black smoke is discharged, the fuel fired heater should be inspected.
- A "buk-buk" noise from the heater is a noise to form flame for combustion.
This is a normal operation.
- When the heater is operated at full load, a "Wooing" noise is occurred.
- When shutting off the engine during heater operation, a "Wing" noise is occurred to perform the
cleaning process.
OVERVIEW
HEATER
fuel fired heater
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