Name: Immergas AUDAX TOP ErP Series
Brand: Immergas
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AUDAX TOP 12 ErP

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21 GRAPH OF AUDAX TOP 12 ErP PUMP FLOW RATE/HEAD

21.1 AUDAX TOP 12 ErP PUMP SETTINGS AND CONFIGURATIONS

Head (kPa)

Flow rate l/h

AUDAX TOP 12 ErP range boilers are supplied with a low power

consumption pump with variable speed control.

e pump's interface enables you to select between 6 pressure

levels with 2 types of controls:

• 3 constant pressure (CP) curves

• 3 proportional pressure (PP) curves

Constant Pressure Curve (CP) default setting. e circulator

pump maintains the pressure level (head) constant as the system

heat demand decreases (ow rate reduction). With these settings,

the pump is suitable for all oor systems.

Proportional Pressure Curve (PP) is allows the pressure level

(head) to be proportionally reduced as the system heat demand

decreases (ow rate reduction). anks to this function, the

electric power consumption of the circulator pump is reduced

further: the energy (power) used by the pump decreases according

to the pressure level and ow rate. With this setting, the pump

guarantees optimal performance in most heating systems, prov-

ing particularly suitable in single-pipe and two-pipe installations.

TECHNICAL NOTE: System minimum water content:

To facilitate proper execution of the AUDAX TOP ErP heat pump defrost cycles, a minimum water content in the system is required,

which must be: 6 l/kW of the machine's power for any type of system. e ywheel guarantees normal operation of AUDAX TOP ErP

with systems divided into zones (with variable water content in circulation). e ywheel also guarantees proper operation with fan coils

used for cooling (a condition in which the ow temperature is very low and has signicant heat load variations that vary the number of

active fan coils). It is also important to check that the dehumidier line has a minimum of 3 l/kW of the machine (dehumidier hydraulic

circuit connection).

N.B.: for inertial tanks codes supplied by Immergas, refer to page 107.

Setting procedure:

1) Factory setting Constant Pressure Curve CP3

2) Press the button for 10 seconds e pump goes into setting mode - the LED starts ashing

3) Each time it is pressed, the settings change LED “I”, “II”, and “III” are lit / the control curve and mode change

4) 10 seconds after the button is not pressed e setting is changed - the pump goes back to operating mode

5) LED “I” or “II” or “III” is still lit e pump is operating with the selected mode and curve.

All curves have been dened in constant pressure mode with minimum, intermediate and maximum speed.

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Immergas AUDAX TOP ErP Series User Manual

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