Bedienungsanleitung REMKO GPM 15 (Seite 9 von 44) (Englisch)

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Modulation

The gas wall heaters are units

with gas burner modulation which

makes operation with diverse

outputs between minimum and

maximum possible. The maximum

output serves to quickly raise the

room temperature when the units

are switched on.

With the modulation feature

by contrast, the required room

temperature can be maintained

at a constant level with constant

variation of the heat output

appropriate to actual demand.

With this automatic adjustment

of the heat output to the

room conditions, the physical

phenomena of layer formation (the

tendency of heat to rise) can be

restricted due to the reduction of

the air supply temperature.

The temperature differences per

metre are below 0.5°C.

When the units operate with a low

heat output, efﬁ ciency above 94%

is achieved.

These results can only be achieved

by precise monitoring of the

climatic room conditions and

optimal control of the units.

For dimensioning heating centres

with hot air heaters, it is important

to observe the number of hourly

air exchanges.

In this respect, the following

should be noted:

Wall gas heaters should generally

be dimensioned so that the air

ﬂ ow rate ensures a minimum of

two air exchanges per hour, even

if this is unnecessary for the heat

output.

The units have a room temperature

sensor NTC1 located at the rear

of the unit as standard so that

the temperature of the air sucked

in by the circulation air fans is

monitored.

Modulation takes place depending

on the value measured by this

sensor in a ratio to the value preset

on the microprocessor on the

control board.

Optimisation of the modulation

temperature value must take place

during operation of the system and

depends on the distance of the hot

air heater from the ground and

required temperature conditions.

The wall gas heater is normally

installed at a distance of 2.5 to 4 m

from the ground.

This ensures that the required

comfort temperature is reached

and maintained, whereby it is

important that the units are

operated at the lowest possible

modulation temperature which

is necessary to maintain these

conditions.

The modulation temperature (REG

SAN value) is factory set at 21°C.

This value allows an average

installation range between 3 and

5 metres at room temperatures

between 17 and 19°C

(see graph below).

Nominal

value at a

height of

1.5 m

Unit installation

height in metres

2.5 3 4 5

15° 16° 17° 18° 19°

16° 17° 18° 19° 20°

17° 18° 19° 20° 21°

18° 19° 20° 21° 22°

19° 20° 21° 22° 23°

20° 21° 22° 23° 24°

Kurve 1:1

korrigierte Kurve

Luftdruck (-durchsatz)

Gasdruck (-durchsatz)

65 70 75 80 85 90 95 100

Wärmedurchsatz [%]

Wirkungsgrad %

Wirkungsgrad

D Luft

D Zuluft

ATTENTION

Unit parameters can only be changed in conjunction with the elec-

tronic temperature control ATR-6.

The above diagram shows the efﬁ ciency

and temperature difference of the air

supply with a reduction of the heat

throughput.

Efﬁ ciency

Supply air

Gas pressure (ﬂ ow rate)

Corrected curve

Curve 1:1

Air pressure (ﬂ ow rate)

Air

Heat throughput [%]

Efﬁ ciency %

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