MSW Motor Technics MSW-DPH-01 Manual De Instrucciones página 34

EN
Cold air can be taken from the atmosphere (open circuit) or from inside the vehicle (closed circuit).
Cold air inlet and hot air outlet
CAUTION
Danger of burns if the distance between the hot air outlet and people is too small.
Make sure people are protected from contact with hot surfaces.
Make sure that people are protected against direct hot air flow from the heater.
The cold air inlet must be set up in such a way that hot air cannot be directly drawn in from the heater or the
vehicle's heating system.
1 - Correct
2 - Incorrect
When the external heating air duct is connected to the heater, the duct diameter should not be less than 85
mm. The material of the cable should be resistant to a temperature of 130°C. The maximum pressure drop
between the inlet and outlet sides of the air heating system should not be greater than 0.151 kPa.
Hot air from the heating system should not flow to parts that are not heat resistant. In passenger vehicles,
the vent should not be obstructed by passengers. If necessary, you can install a protective net on your own.
In the case of the heater operating in external circulation mode, the position of the air inlet opening should
be appropriate to ensure that no water splashes or exhaust fumes are sucked into the heater during normal
operation.
In the case of the heater operating in the internal circuit, measures must be taken to prevent the supply of
hot air from re-entering the air inlet port. If the air inlet pipe is not connected in this mode, a hood with grilles
should be installed on the air inlet port of the main heater. The intake air should be taken from a cold area of
the compartment, e.g. from under the seats.
Fuel supply
The fuel for the heater can be supplied from the vehicle's fuel tank or from an additional, independent fuel
tank. Do not install the fuel tank in the cabin or passenger compartment or in any other place that may cause
a fire if an independent fuel tank is used.
The difference in height between the heater and the fuel pump and between the fuel pump and the heater
creates fuel pressure in the fuel pump. The inner diameter and length of the fuel line are related to the
resistance in the fuel path. Take these factors into account when installing.