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21

18.03. 5719210_03

ANL / 290-650

EN

10.  OPERATING CHARACTERISTICS

10.1.  COOLING SETPOINT

(Factory default) = 7°C, ∆t = 5K.

10.2.  COMPRESSOR DELAY TIMERS

To avoid excessive compressor starts two functions are 

provided.

-  Minimum time compressor is OFF 180 seconds.

-  Minimum time compressor is ON 120 seconds.

10.3.  CIRCULATING PUMPS

The wiring schematic provides outputs to control the 

circulating pumps. The system pump starts immediate-

ly  and after 40 seconds of operation, when the water 

flow is stabilised, the pressure differential/flow switch 

control function is enabled. If no alarms are present 

the unit will start. 

10.4.  ANTI-FREEZE ALARM

The alarm 

11

 is always active even in standby mode. 

To prevent damage to the plate heat exchanger by 

freezing of the water within the unit is stopped and 

an alarm raised if the water temperature drops below 

the minimum anti-freeze setpoint of  3°C. The unit can 

only re-start after a manual reset  and if the anti-freeze 

sensor reads a water temperature above 4°C 

12

. With 

the unit in off mode and with a water temperature 

below 4°C the factory fitted electric heaters on the 

heat exchanger are turned on, and turned off when 

the water temperature exceeds 5°C. The water pump 

always remains active.

10.5.  WATER FLOW ALARM

The unit has a low water flow rate alarm using a fac-

tory fitted differential pressure switch or flow switch. 

This safety activates after the first 40 seconds of pump 

operation if the water flow rate is not sufficient. The 

operation of this alarm stops the compressors and the 

pump. 

WARNING 

11

 

The anti-freeze setpoint 

can only be adjusted by an 

authorised service centre and 

only after verifying that the 

hydraulic circuit has the cor-

rect % of anti-freeze solution.

12

 

If this alarm occurs immediate-

ly call the authorised technical 

service assistance.

11.  ROUTINE MAINTENANCE 

It is forbidden to carry out any cleaning operation 

before isolating from the power supply 

1

.

Confirm no voltage is present before commencing 

works.

Periodic maintenance is a fundamental requirement to 

ensure efficient unit operation both in terms of opera-

tion and energy efficiency. 

The fundamental required annual checks are: 

11.1.  HYDRAULIC CIRCUIT

CHECK:

1. 

Water circuit is filled.

2. 

Water filter is clean.  

3. 

Operation of the differential pressure or flow 

switch. 

4. 

Absence of air in the system (vent).

5. 

Water flow rate is always constant through the 

evaporator.

6. 

Condition of the hydraulic piping insulation.

7. 

The percentage of anti-freeze liquid, as may be 

required

11.2.  ELECTRIC CIRCUIT

CHECK:

1. 

Operation of safeties.

2. 

Power supply voltage. 

3. 

Electrical power input.

4. 

Tightness of connections and terminals.

5. 

Operation of the compressor crankcase heater.

11.3.  REFRIGERANT CIRCUIT

CHECK:

1. 

State of compressors.

2. 

Efficiency of the plate heat exchanger. 

3. 

Operating pressures.

4. 

Leaks to confirm the correct operating refriger-

ant charge.

5. 

Operation of the high and low pressure pres-

sostats 

6. 

Efficient operation of the filter drier.

11.4.  MECHANICAL CHECKS

CHECK:

1. 

Tightness of screws, 

of compressors and electri-

cal panel and external panelling of the unit. Poor 

fixings cause noise and abnormal vibrations.

2. 

The state of the unit structure.  

 

Treat any parts showing signs of corrosion with 

the appropriate paints to reduce or eliminate 

rust.

12.  SPECIAL MAINTENANCE

The ANL units are factory charged with R410A and 

tested. In normal operation they therefore do not 

require any intervention from the technical assistance 

service in relation to the refrigerant charge. Over time 

some small leaks can appear, causing discharging the 

circuit and causing a malfunction of the unit. In this 

case the leaks have to be found and repaired and the 

unit recharged in accordance and as required under 

current legislation and good working practices.

13.  DISPOSAL

Ensure that the disposal of the unit is carried out in 

accordance with the current legal requirements. 

WARNING

We recommend a service log book is 

provided for the unit (responsibility 

of the user) to keep records of any 

works on the unit, which will aid 

maintenance and repair works. Note 

in the service log book date, type of 

works (routine maintenance, inspec-

tion or repair), describing the event 

and the measures taken.

WARNING 

I

t is 

FORBIDDEN

  to charge with 

refrigerant circuit with a refrigerant 

type different to that indicated. Us-

ing a different refrigerant can cause 

serious damage to the unit.

Содержание Variable Multi Flow ANL 290

Страница 1: ...BARCODE EN Installation and Maintenance Manual CHILLERS EXTERNAL UNITS HIGH EFFICIENCY ANL 290 650 18 03 5719210_03...

Страница 2: ...es In addition the applied mark guarantees that our appliances fully comply with the safety requirements defined by the applicable product s rules We constantly monitor the quality level and as a resu...

Страница 3: ...EN 60335 2 40 A2 2009 CEI EN 55014 1 2017 CEI EN 60335 2 40 A13 2012 CEI EN 55014 2 2016 La presente dichiarazione di conformit rilasciata sotto la responsabilit esclusiva del fabbricante This declara...

Страница 4: ...7 3 Dimensions ANL 580 620 650 mm 15 7 4 Position of hydraulic connections mm 16 7 5 ANL C 290 300 340 400 mm 17 7 6 ANL C 580 620 650 mm 17 8 Electrical connections 18 8 1 Electrical power supply con...

Страница 5: ...h the equipment as this could result in accidents for which the manufacturer will not be held responsible The warranty will be voided if the above mentioned warnings are not respected 1 2 SAFETY INSTR...

Страница 6: ...ifting capability of the equipment being used taking into account the information provided with the packaging When lifting insert through the unit s base holes lifting bars NOT PROVIDED of sufficient...

Страница 7: ...nnection to the unit This clean ing eliminates welding slag dirt rust or any other impurities from the piping These impurities may otherwise be deposited within the unit and cause a malfunction The co...

Страница 8: ...freezing 1 Complete draining of water from the unit 2 Operating with glycol with a percentage of glycol se lected in accordance with the minimum anticipated external temperature 3 Use of electric hea...

Страница 9: ...ly sized for the required flow rate The water flow rate through the heat exchanger must always be constant WARNING Carefully clean the system prior to connection to the unit This clean ing eliminates...

Страница 10: ...must always be constant WARNING Carefully clean the system prior to connection to the unit This clean ing eliminates welding slag dirt rust or any other impurities from the piping These impurities ma...

Страница 11: ...heat exchanger must always be constant WARNING Carefully clean the system prior to connection to the unit This clean ing eliminates welding slag dirt rust or any other impurities from the piping Thes...

Страница 12: ...217 2 28 75 221 6 21 32 164 4 21 76 167 7 VT17 12 0 0 6 ANL 400 L P2 797 754 1049 536 52 805 1080 542 27 56 220 5 28 37 226 9 21 72 173 7 22 35 178 8 VT17 12 0 0 6 ANL 400 L P3 778 735 1032 537 54 788...

Страница 13: ...25 1160 1100 800 800 800 1100 3000 A Gy Gx B C D 1610 40 16 16 16 16 40 420 420 2050 200 200 2050 200 200 20 20 1060 7 1 DIMENSIONS ANL 290 300 340 mm 7 1 1 MAXIMUM OVERALL mm 1610 40 16 16 16 16 40 4...

Страница 14: ...0 16 16 16 16 40 420 420 2050 200 200 2050 200 200 20 20 1060 7 2 2 LIFTING POINTS mm 16 16 16 16 2050 200 200 2050 200 200 20 20 1060 7 2 3 POSITION ANTI VIBRATION MOUNTS mm 1605 1735 2450 2525 1160...

Страница 15: ...IMUM OVERALL mm 1875 3200 3275 2005 1100 1160 800 800 800 1100 3000 40 16 16 16 16 16 16 40 1525 1275 200 200 1525 1275 200 200 Gy Gx 1956 40 16 16 16 16 16 16 40 644 600 1525 1275 200 200 1525 1275 2...

Страница 16: ...UT 2 IN 2 195 180 670 ANL 290 300 340 400 VERSION 00 ANL 290 300 340 400 VERSION 01 02 03 04 P1 P2 P3 P4 IN 2 OUT 2 IN 2 OUT 2 205 180 492 205 180 670 IN 2 OUT 2 IN 2 OUT 2 IN 2 OUT 2 205 180 492 195...

Страница 17: ...ANL 290 650 EN 7 5 ANL C 290 300 340 400 mm 7 6 ANL C 580 620 650 mm 191 184 152 233 189 183 138 219 A C B D 189 183 138 219 C D A Inlet Intake line 35 B Otlet Liquid line 22 C Inlet Intake line 42 D...

Страница 18: ...e below 2 The unit is only powered up on completion of any hydraulic and electrical works 3 Comply with the indicated phasing and earth requirements 4 The power supply cable must have the appropri ate...

Страница 19: ...ct functioning of any flow switch installed close the isolating valve on the evaporator outlet and observe the result on the unit display panel open the valve and reset the flow trip alarm 9 3 FIRST S...

Страница 20: ...t the control panel is off WARNING For the installation refer to the electrical wiring schematics provide with the unit The electrical wiring schematic and manuals must be carefully conserved and made...

Страница 21: ...n and energy efficiency The fundamental required annual checks are 11 1 HYDRAULIC CIRCUIT CHECK 1 Water circuit is filled 2 Water filter is clean 3 Operation of the differential pressure or flow switc...

Страница 22: ...vents and of the terminal units 14 5 UNIT DRAINING WARNING During the winter period the water in the heat exchanger may freeze when the system is off causing irreversible damage to the heat exchanger...

Страница 23: ...installed PR3 Not installed Go to question 3 Installed Enter in parameter PAN index 9 menu INSTALLER with the appropriate value Value 1 Season selection controlled from the chiller circuit board ON OF...

Страница 24: ...ns loose Operating outside of limits Check against operating limits chart Pressostat faulty Replace the component Thermal cut out operates Check voltage and settings Check insulation of windings Compr...

Страница 25: ...02 04 P2 P4 9 Liquid sight glass 10 Desuperheater optional 11 Water filter 12 Pump s optional 13 Expansion tank standard with hydronic module 14 Buffer tank optional 15 Flow switch 16 Gauge 17 Air ven...

Страница 26: ...nal valve only for versions 02 04 P2 P4 9 Liquid sight glass 10 Desuperheater optional 11 Water filter 12 Pump s optional 13 Expansion tank standard with hydronic module 14 Buffer tank optional 15 Flo...

Страница 27: ......

Страница 28: ...C S p A Via Roma 996 37040 Bevilacqua VR Italia Tel 39 0442 633111 Fax 39 0442 93577 marketing aermec com www aermec com Aermec reserves the right to make all modification deemed necessary for improvi...

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