Operating Guide

11
Heater air system
Risk of burning and injuries！
●The hose of the heater air system and the hot air outlet are to be routed and fastening
in such a way that they pose no temperature risk to people、Animals or materials sensitive
to temperature from radiation/contact or blowing directly. If necessary, a cover is to be
fitted to the heater air system or hot air outlet.
●The outflow hood must be fitted on the hot air outflow side.
A safety gird must be fitted to the heater air intake side and outflow side if no air hoses are
mounted to prevent any injuries from the heater air fan or burns from the heat exchanger.
●High temperatures occur in the heater air system during and after the heater has been
working. This is why it is important to avoid working in the vicinity of the heater air
system while the heater is working. In such cases, switch the heater off beforehand and
wait until parts have cooled down completely. If necessary, wear safety gloves.
Note
●The heater air intake opening must be arranged in such a way that under normal
circumstances, it is not possible for exhaust from the vehicle engine and heater to be
sucked into the system or for the heating air to be contaminated with dust, salt sprayed.
For circulating air, position the circulating air intake in such a way that the outflowing hot
air cannot be directly sucked in again.
●In the event of possible overheating, it is possible for local lot air temperatures of up
to max.150℃ or surface temperatures of up to max.90℃ to occur immediately before the
defect shutdown. Therefore only temperature-resistant hot air hoses approved by us must
be used for the heater air system.
●When checking the functions, the mean outflow temperature measured after the
heater has been running about 10 minutes at approx.30cm from the outlet should not
exceed 110℃(at an intake temperature of approx.20℃).
●If there is a risk of the driver and passengers touching the heater when the vehicle is
being driven normally, a contact protection device must be fitted.
1-Safety grid 2-Outflow hood 3-hose clip
4-Flexible hose 5-Rotating outflow
Fig.14