Bedienungsanleitung Haas-Sohn PALLAZZA-II 519.08 (Seite 6 von 33) (Englisch)

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Figure 4: Wind protection of the air intake pipe

The following table applies to the sizing of the air intake

pipe:

Diameter of the

intake pipe *

Maximum

length *

Max. number of

90° bends

50 mm

0.5 m

100 mm

1 m

100 mm

3 m

*The figures given apply as appropriate. With a flat duct

or similar, a suitable cross-section is to be chosen.

If the pipes are narrower than these dimensions, it may

be that the volume of combustion air is insufficient. This

will result in heavier buildup of clinker in the grate and

thereby to safety shutdowns.

Connection to the electricity supply:

Connect the stove to the electricity supply with the mains

cable supplied. (See Figure 1).

4. The pellet stove’s functional characteristics

Your pellet stove is designed to operate in such a way

as to maintain a constant comfortable room temperature.

The generation of heat in the stove is therefore

automatically controlled by the desired room

temperature (target temperature) set by the operator.

Depending on the difference between the target

temperature and the current room temperature (actual

temperature) the control unit selects output or “Standby”

mode in a modular fashion. So the pellet stove

guarantees the best possible adjustment of the

combustion behaviour of the pellet stove for the situation

in the room where it is installed without constant manual

corrective measures.

5. The pellet stove’s operating statuses:

The operation of the pellet stove is characterised by 8

operating statuses:

The ignition phase begins if the current room

temperature falls below the set target temperature by

1ºC and the stove has cooled down to a temperature of

below 70C°.

5.1. Ignition phase

In the “Ignition phase” the grate is filled with a precisely

defined quantity of fuel and this quantity of fuel is ignited

with a glow igniter.

The “Ignition phase”, which is divided into 20 zones, is

ended after reaching a precisely defined temperature on

the “flame temperature sensor” and the control unit

switches to “Heating Mode” operating status.

The duration of the “Ignition phase” may vary.

If during these time no flame is formed or the required

temperature is not reached at the “flame temperature

sensor – flue gas”, a safety shutdown is initiated.

Here the rotation speed of the induced draught fan is

constantly measured and checked by means of the

rotation speed feedback.

5.2. Heating mode

After successful completion of the “Ignition phase”, the

stove automatically switches to “Heating mode”

operating status.

In “Heating mode” operating status, the stove’s heat

output is adjusted in modular fashion on the basis of the

room temperature or the difference between the actual

room temperature and the target room temperature.

If there is a great difference between the target room

temperature and the actual room temperature, then the

stove will operate with greater heat output (maximum

8,3 kW).

The closer the actual room temperature comes to the

target room temperature, the more the heat output of the

stove is reduced (minimum heat output = 2,4 kW).

Depending on the required heat output, the relevant

quantity of fuel will be supplied at a regular rate via the

pellet chute to the grate by means of the screw

conveyor.

During the “Heating mode” operating status, the flame or

combustion chamber temperature is measured just

above the flame by means of a special thermosensor

whose signals are processed in the control unit and are

the basis for the relationship of the “energy level in the

grate” and the combustion air volume taken in, which

ensures “ideal combustion” and a high level of efficiency.

During the “Heating mode” operating status, the rotation

speed of the induced draught fan is monitored by means

of rotation speed feedback and constant comparison

between the target and actual rotation speeds.

In the event of a large difference between the actual

rotation speed and the target rotation speed, a safety

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