UM AQA 01 N 1GB

ManualsBrandsSystemair ManualsAir ConditionersSYSAQUA170.H.1P-SP.WPS.AVM.T - SYSAQUA170.H.1P-SP.SYS.WPS.AVM.T

Table Of Contents

English

Done

Com

Scheduler

Archive

1/4

Full>Wait 2m for Restart

Execute

1/3

Execute

1/2

Readwrite

BSP load

a-snapshot sa.-> SD

Sett. service save

Sett. factory load

Sett. service load

Restart required !

Filter

+Settings load <- SD

Settings save-> SD

SD-Card

1/10Save / load

0.0 h

-Reversing valve

-Compressor 2

-Compressor 1

Circuit 2

-Reversing valve

-Compressor 2

-Compressor 1

Circuit 1

1/13Operation hours

Yes

1/2

Yes

18.0°C

7.0 K

10.0 K

-Circuit 2

-Circuit 1

Manual deice

Sour.t.defr.fin.

DT defrost shutdown

DT defrost

1/7Deice

Stage 2

Stage 1

Off

1/3

Manual

Automatic

1/2

Off

Automatic

Off

Automatic

Off

Automatic

0 %

Automatic

0 %

Automatic

0 %

Manual

Stage 1

Manual

0 %

Manual

Stage 1

Manual

Supply pump

-Circuit 2

-Circuit 1

Reversing valve

-Circuit 2

-Circuit 1

Exp. valve

-Circuit 2

-Circuit 1

Source Fan

1/22Outputs manual test

Reduced

Heating

Low load

None

1/4

1/2

Réduced

Ecternal switch

On/Off input

1/2

Remote control configuration

30s

30.0°C

-----------

30s

off

-i Min. low. press.

Circuit 2

------------------------------

-i Min. low. press.

Circuit 1

1/5Refrig.circuit config

Active

Passive

1/2

Off

1/2

100.0%

20.0%

40.0%

80.0%

---------------

120s

72h

Active

---------------

Off

Capacity for max speed

Mod.pump standby speed

Mod.pump min speed

Mod.pump max speed

--------------------------

Anti-seizing duration

Anti-seizing frequency

Anti seizing act.

--------------------------

Continuous pump

1/10Pump configuration

17bar

14bar

10bar

18bar

10%

100%

-----------

17bar

14bar

10bar

18bar

10%

100%

-Heat.pressure setp.

-Cool.pressure setp.

-Mod.fan pressure de

-Mod.fan pressure se

-Mod.fan min speed

-Mod.fan max speed

Circuit 2

------------------------------

-Heat.pressure setp.

-Cool.pressure setp.

-Mod.fan pressure de

-Mod.fan pressure se

-Mod.fan min speed

-Mod.fan max speed

Circuit 1

1/11Fan configuration

20dKdT ret./sup. temp

Remote control

Circuit control

Supply pump

Source Fan

1/5Configuration

correct

Save / load

Operation hours

Deice

Outputs manual test

Configuration

Flow switch

1/6Service

Access

Services

Commissioning

Status

1/4Main Menu

20 SysAqua

3.5. DEICING

Each circuit of SysAqua 140/150/170/190/210 has its own deicing control. The only limitation is that one

circuit is not authorized to deice if the other one is undergoing deicing and 5 minutes after the end of deicing

of the rst circuit.

Some deicing parameters can be accessed from the user interface:

² DT defrost: If the air temperature is less than the heat

exchanger temperature at the difference indicated, the

circuit switches to deicing mode (range: [10-20K], default

value 10K)

² DT defrost shutdown: If the air temperature is less than

the heat exchanger temperature at the difference indicated

while the circuit is in shutdown phase, the circuit switches

to deicing mode (range: [10-20K], default value 7K).

² Sour.t.defr.n.: The deicing stops when this temperature is reached by the heat exchanger sensor.

(range: [12-20°C], default value 18°C). when this temperature is reached by the heat exchanger

sensor. (range: [12-20°C], default value 18°C)

Changing the mode cannot stop the deicing operation. Only an alarm can stop the deicing before it completes

its cycle.

Deicing can be initiated in different ways:

² If the temperature delta between the air temperature and that of the heat exchanger falls below the

congured value

² If the evaporation pressure drops

² Preventive deicing.

Deicing stops if the heat exchanger temperature rises above the congured value.

If the water outlet temperature drops below 10°C or if the deicing lasts more than 10 minutes, an alarm is

displayed and the deicing cycle is stopped.

4. INPUTS/OUTPUTS

4.1. COMPRESSORS

The compressors are activated according to a calculation of capacity calculated by proportional-integral

control according to the setpoint and water outlet temperature.

The number of activated compressors depends on the required capacity. The selection of activated

compressors is managed by a Lead-lag algorithm enabling the operating time of each compressor to be

equalized.

4.2. FANS

The unit can control 2-speed AC fans or variable speed EC fans. The fan speed is managed by a proportional

controller.

² according to the condensation pressure in cool mode

² according to the evaporation pressure in heat mode

The AC fan speed is controlled by two stages with hysteresis and the EC motor by a ramp with a hysteresis

threshold for the minimum speed.

4.3. ELECTRONIC PRESSURE REDUCING VALVE SYSAQUA 140/150/170/190/210

The electronic pressure reducing valve position has several phases:

² Pre-positioning

² Operation

In pre-positioning mode, the position of the electronic pressure reducing valve depends on the water inlet

temperature and the air temperature.

In operation, the position of electronic pressure reducing valve is controlled by a proportional integral

controller based on overheating.

Stopping the circuit that is not in deicing mode is not authorized either during the deicing of the rst circuit

and two minutes after the end of deicing.