14
Functional diagram
EN
m. Fuel
tank
n. Fuel
fi
lter
o. Fuel
pump
p. Solenoid
valve
q.
Burner system - nozzle
r. Fan
s. Petrol
engine
t. Safety
valve
u. Pressure
gauge
v.
Regulation of water volume
w. Flame
sensor
a.
Quick coupling, inlet
b. Water
fi
lter
c.
High pressure pump
d. Circulation
valve
e. Flow
switch
f.
Non-return valve with throttle
g. Flow
switch
h. Coil
i. Temperature
sensor
j.
Quick coupling, outlet
k. Spray
handle
l. Spray
lance
The following sensors are built into the system:
-
Flow switches (e-g)
Ensure that there is a water fl ow through the boiler, before it can be ignited.
Allows the solenoid valve (p) to open.
-
Flame sensor (light sensor) (w)
Surveys that there is a combustion in the boiler when fed with fuel, and that the combustion will stop
when the fuel supply is cut off.
-
Temperature sensor (i)
Measures the temperature of the high pressure water from the boiler. Dependent on higher or lower
tem per a ture the burner will ignite or turn out.