83-403
Coolant circuit with diagram
A. Models 124.061, 124.0 up to approx. 09/92 (excluding models
124.034/036),
models 124.120/128/133/188/193/3 up to approx. 01/93,
models 124.125/127/130/180/185/190/2
The auxiliary heater heating unit (A6) is in
If the mono valve (Y17) in the bypass line is
the full flow of the coolant circuit. In addition,
open, the heat exchanger (6) is separated
a bypass line with electromagnetic mono
from the coolant circuit. The coolant flows
valve (Y17) is installed from the coolant
from the auxiliary heater heating unit (A6)
outlet of the auxiliary heater heating unit
through the bypass line direct to the engine.
(A6) to the coolant return (heat exchanger
This circuit ensures that the engine is heated
outlet).
up more quickly and that no temperature
Function
peaks occur.
If the in-car temperature is more than
If the in-car temperature is more than
approx. 2°C higher than that set at the
approx. 2°C lower than that set at the
temperature selector (e.g. as a result of the
temperature selector, with the auxiliary
sun's rays), the duo and mono valve (Y19/
heater switched on, the duo or mono valve
Y21) of the heat exchanger is closed and the
(Y19/Y21) of the heat exchanger is opened
mono valve (Y17) in the bypass line is
and the mono valve (Y17) in the bypass line
opened. The coolant flows from the auxiliary
is closed. The circulation pump (A6m1)
heater heating unit (A6) through the bypass
pumps coolant from the engine through the
line to the engine (heat exchanger (6)
auxiliary heater heating unit (A6) and heat
disconnected from circuit); only the engine is
exchanger (6) back to the engine.
heated.
At an in-car temperature corresponding to
the temperature set at the selector (
2°C
approx.), the duo or mono valve (Y19/Y21)
of the heat exchanger (6) and the mono
valve (Y17) in the bypass line operate in a
cycle. The cycle sequence is duo or mono
valve (Y19/Y21) of the heat exchanger (6)
open, mono valve (Y17) in the bypass line
closed and vice versa.
Copyright Daimler AG 02.12.14 G/08/07. Ten wydruk WIS nie jest obj
ę
ty funkcj
ą
aktualizacji.
strona 1
