Equipment Construction; Mode Of Operation - HEYLO K 220 Bedienungsanleitung

3. Equipment construction

A ventilator and chromium-titanium combustion chamber with a heat exchanger and
exhaust gas nozzle fitted in the housing. The oil burner is installed in the switch cabinet with its
control units within the casing and above the air suction unit. The tuyere connection with the
flame pipe is fitted on the vertically placed combustion chamber. Both functional units are
connected to each other by means of supply lines for air, fuel as well as ignition and monitoring
bodies. Since the flame reverses within the combustion chamber, it has to be long and slender.
Capillary tube thermostats are installed in the device. The temperature regulator ensures that
heating times are short when heating up by delayed switching on of the ventilator. When
switching off, the temperature regulator allows the ventilator to run for some more time to
remove the remaining heat from the device. The combustion chamber is thus protected from
overheating due to subsequent heat at the same time.
Efficient oil pre-heating has been installed in the devices for operation during cold external
temperatures. It heats up a specific amount of heating oil until the burner can start up.
The room thermostat connection permits room temperature dependent control of the device
using a room thermostat.
An operating hour counter has been fitted into the device. It indicates running times of the
device in [h] during heating operation. The running times can be read after opening the door of
the switch cabinet.

4. Mode of operation

During operation, the heating oil EL is sucked in by the combustion pump through the suction
pipe from the supplied tank or from a firmly installed oil supply unit. The amount of oil required
for the heating performance is introduced into the burner nozzle through the pressure pipe,
sprayed into the combustion chamber and ignited. A flame lights up, which, together with its
combustion gases, heats the combustion chamber and the heat exchanger. Excess heating oil
conveyed from the pump flows back into the container.
After a short heating up time, the temperature regulator switches on the ventilator. A very short
heating up time is achieved in this way. The ventilator blows the sucked in air through the
combustion chamber and the heat exchanger. It is heated up in this way. The heated up air
exits on the opposite side through the blow-out nozzle.
The main switch is switched on to position -II- "heating" for heating up. First, the burner starts
up and after heating up the combustion chamber and heat exchanger, the ventilator is also
switched on and conveys hot air.
A room thermostat that is possibly attached later on has to be set higher than the ambient
temperature, otherwise the device will not start up, since there will be no electricity supply.
The main switch is switched on to position –I- "ventilate" on the switch cabinet for ventilation.
Only the ventilator is running now. The device is now functioning as
a ventilation device.
The main switch is set to position -0- to switch off the device.
Main switch
27 EN