EQKR R eCoolER hp - VacomAIR

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EQKR ReCoolER hpHeat-pump with heat recovery 1 Safety directions 2Technical data 3Product description 4Description of the functions 5Safety instructions 6Operating and care 6User interface 7Maintenance 8

heat-pump with heat recovery

AIR COMFORT

AIR TREATMENT

9568 GB 2015.08.11

AIR COMFORT EQKR ReCoolER hp» MAINTENANCE

Maintenance 2

Fläkt Woods 9568 GB 2015.08.11 Specifications are subject to change without further notice

EQKR ReCoolER hp

safETy diRECTions

important!

– The unit must NOT be used for purposes other than as a reversible heat pump unit.– The unit’s Operating & Maintenance Instructions must be studied carefully before starting/operating/servicing/ maintaining/scrapping the unit. Keep these instructions in a safe place for future reference!– All service and maintenance must be carried out by certified personnel. Service/maintenance of the refrigerant system must only be carried out by an accredited company and certified personnel wearing required protective equipment (gloves and protective eye- glasses).– Lock and tag the heat pump prior to performing service on the unit. – Do NOT stand on the heat-pump unit!– Use only genuine spare parts for maintenance!– Installation of units with split casing is to be performed only by certified refrigerant technicians.

failure to comply with above terms and conditions can result in serious injury and will void the warranty.

CompulsoRy dEClaRaTion and RECuRRing inspECTionCompulsory declarationThis product contains refrigerant R410A which is a flourinated greenhouse gas. The European Union is committed to reducing emissions of such gases. Ensure that you are fully aware of your local regulations and that they are complied with.

Recurring inspectionRecurring inspection, i.e. leakage inspection of the refrigerant system must be carried out at least once annually by certified personnel (normally a refrigeration service company), see “Maintenance”.

Maintenance 3


EQKR ReCoolER hp

TEChniCal daTa EQKR ReCoolER hp

Table above shows data for current ratings and refrigerant quantities for ReCooler HP delivered with eQ Master.

eQ size 3x400 VaC operating current (a) (without electric heater)

3x400 VaC operating current (a) (with electric coil)

Refrigerant charge (kg) oil / Circuit

Circuit 1 Circuit 2 Circuit 3 Total (l)

8 22,1 22,1 4,9 4,9 0,9

11 14,3 18,7 6,9 6,9 1,9

18 17,1 26,2 9,8 9,8 1,9

23 20,9 32,4 16,4 16,4 1,9

32 21,1 39,9 21,5 21,5 1,9

41 33,8 53,7 13 13 26 1,9

50 41,7 65,4 14,3 19,5 33,8 1,9

72 61,8 93 13,5 13,5 13,5 44,5 1,9

Maintenance 4


EQKR ReCoolER hp

pRoduCT dEsCRipTionThe EQKR ReCooler is an integrated reversible heat pump providing both heating and cooling. It consists of a rotary heat exchanger and a Heat-pump unit. The ReCooler Heat-pump has an independent control unit with heating-, cooling- and thermal wheel demand supplied via an external control source.

REfRigERaTion sysTEmThe Reversible Heat-pump unit in the ReCooler is designed for external air temperatures: • Cooling+20to+40°C • Heating,withelectricalheater+20to-20°C • Heatingwithoutelectricalheater+20to-15°C

RoToR uniTThe rotor unit in the ReCooler is designed for heating and cool-ing air by utilising the temperature differences in the outdoor air and extract air. The rotor operates to recover energy from the extract air in combination with the heat pump unit.

opTional ElECTRiC dEfRosTing CoilThe defrost electrical heater is mainly used to shorten defrost cycle time. It’s also used as an additional heater when evapo-rationtemperatureislow(<-21°C).Theelectricalheaterinclu-des two thermal protectors: • Anautoreset • Amanualreset

1. Outdoor air 2. Supply air 3. Extract air 4. Exhaust air 5. Rotary heat exchanger - service hatch 6. Compressor 7. Frequency inverter for compressor 8. Drainage

9. Control system for the ReCooler 10. 4-way valve in wrong position 11. Main switch disconnector 12. Optional – Electrical heater 13. Cable glands 14. Electronic expansion valves 15. Handheld terminal for the ReCooler

3

5

13

11

14

14

10

12

15

12

4

6

7

98

8

Maintenance 5


EQKR ReCoolER hp

dEsCRipTion of ThE funCTions

Size 008-032 1 circuitSize 041-050 2 circuitsSize 072 3 circuits

pos Total Component

1:1-3 1 Supply air coil2:1-3 1 Exhaust air coil3:1-3 1 4 way valve4:1-3 1 Compressor5:1-3 1 Liquid separator6:1-3 1 Reciever7:1-3 1 Filter dryer9:1-3 1 EEV 210:1-3 1 EEV 111:1-3 1 High pressure sensor12:1-3 1 Low pressure sensor13:1-3 1 Suction gas sensor14:1-3 1 Liquid temperature sensor15:1-3 1 Discharge gas sensor16:1-3 1 Low pressure service connector17:1-3 1 High pressure service connector

18 1 Defrosting pressure sensor19 1 Rotor20 1 Electrical heaterGT6 1 Automatic thermal protectionGT7 1 Manual thermal protection

18

18

Room

Cooling modeHeating mode

20

19

VVX

GT6 GT7

2:1-3

1:1-3

3:1-3

15:1-3GT12:1-3GT13:1-3GT16:1-3

4:1-3

5:1-3 9:1-3

7:1-3

14:1-311:1-317:1-3

6:1-3

10:1-3

Room

Maintenance 6


EQKR ReCoolER hp

safETy insTRuCTions

lifTing

Because of its design, the centre of gravity is offset towards the inspection side. This must be taken into account when lifting the unit. The unit should fi rst be lifted slightly, and then inspected to ascertain that it does not tilt or appear unstable before being lifted higher.

duTy of noTifiCaTion and in-sERViCEinspECTionduty of notificationIf the amount of refrigerant in a unit exceeds 10 kg thesupervisory authorities, generally the environmental health department, must be informed. This information must be provided well in advance of installation. More information about this is contained in local refrigerant legislation.

leak tracing during installation and in-service inspectionA leakage inspection must be carried out yearly on EQKR008-072. This conforms to the EU regulation on fl uorinatedgreenhouse gases 517/2014.

important!The unit must be commissioned byauthorised personnel.

important!The unit’s centre of gravity is not inthe middle of the unit.

opERaTing and CaRE

main ComponEnTs A control panel is installed in the service section of the cooling unit and includes the following components:– Main electrical panel disconnect switch– Miniature circuit breaker– Control unit with display

ComponEnT dEsCRipTion Control unit (KR1).Microprocessor-based, programmable electronic controller.

miniaTuRE CiRCuiT BREaKERAutomatically operated electrical switch designed to protect an electrical circuit from damage caused overload or short circuit.

main ElECTRiCal panEl disConnECT sWiTChThe disconnect switch is used to turn on/off power to the Re-Cooler heat pump unit. Always lock and tag the unit prior to performing any mainte-nance or servicing work.

ElECTRiCal ConnECTionsCheck the electrical schematics for additonal information with regards to external connections (page 10).

important!Always read the safety directions on page 2 prior to beginning any work!

Warning!The circuit breaker does NOT isolatethe power supply to the entire cooling unit! Therefore always open and lock the main switch before you begin any work onthe cooling unit.

Maintenance 7


EQKR ReCoolER hp

pgd1 human maChinE inTERfaCE

The ENTER button is used to scroll through the list of available languages and the ESC button is used to confirm the users selection.

The home screen shows the following information:– Circuit that the display is connected to– Operating mode (Cooling/Heating)Status: – Standby – Start phase – Unit running – Start delay – Defrost – Alarm & etc.The current example shows: – Compressor speed demand sent from external control system: 75 % – Current rotation speed of the compressor: 35 % – Current speed of Rotary Heat Exchanger: 100 %

This screen displays information related to the current status (operation mode) of the coils (condensing/eva-porating) and whether the AHU is configured withsupply air in the upper or lower level.

Maintenance 8



EQKR ReCoolER hp

Temperature and pressure values.

Superheat and sub-cooling.

This function is activated ONLY when the heat pump is controlled via Analog control.

Default setting of the ReCooler HP unit.

1. At start-up, the rotating heat exchanger speed will decelerate when the demand compressor speed is less than the actual compressor speed.

2. With low demand and the compressor at its lowest speed, the rotating heat exchanger will decelerate.

Maintenance 9



EQKR ReCoolER hp

When the unit is running in economy mode, the rotating heat exchanger is always first in the heating sequence andonly begins to decelerate when the compressor is off.

Access to additional basic configuration settings.

Used to select the heat pump control method(Analog/Modbus),

Maintenance 10


EQKR ReCoolER hp


Activating quick start will bypass the normalcompressor start up sequence.

Software information of the system.

Maintenance 11


EQKR ReCoolER hp

mainTEnanCE

inspECTion/mainTEnanCERegular inspection and maintenace in accordance with legi-slation in force must be carried out by a certified refrigeration technician.

inspECTion To be carried out by the owner/user once a week.

Check the following:1. Indicated alarms2. Abnormal noise/vibrations3. Leakage4. Corrosion, wear and tear5. The interior of the unit, light fittings

mainTEnanCE To be carried out by a certified refrigeration technician at least once each year.

Check the following:1. Evaporation/condensation temperature2. Discharge temperature3. Expansion valves4. Safety equipment5. Cooling and heating capacity6. Unit system test7. Electrical equipment8. Coils, drip tray and the drainage system9. Air filter

important!Always read the safety directions on page 2 prior to beginning any work!

RECuRRing ChECKs Must only be carried out by a certified refrigeration technician. Inspect the system at least once every 12 months and maintain a journal.

Check the following wherever applicable:1. Piping2. Inspection to detect refrigerant leakage3. Check for abnormal vibrations4. Check to detect possible corrosion5. Whether filling with additional refrigerant is needed6. Check to detect possible oil leakage7. Safety equipment8. Connection joints/Seals

dismanTling When dismantling (scrapping) this type of unit, the refrigerant and compressor oil must unconditionally be collected and contained for destruction/recycling.

spaRE paRTsSpare parts can be bought via local cooling suppliers. Contact your local Fläkt Woods office for information regarding com-ponents that need to be replaced.

EQKR R eCoolER hp - VacomAIR

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