Acson 5WSS20AR Guida d'installazione

Water Source Heat Pump

Split Type Air Conditioner

WSHP

INSTALLATION MANUAL

Model: IM-5WSS-1103-ACSON

Part Number: R08019029752

i

OUTLINE AND DIMENSIONS / DISPOSITION ET DIMENSIONS /

AUSLEGUNG UND ADMESSUNG / INGOMBRI E DIMENSIONI / ESQUEMA Y DIMENSIONES /

СХЕМА И РАЗМЕРЫ

700,0

572,096,0 32,0

317,0

357,0

774,0

A

All dimensions in mm

Figure 1

5WSS 07AR / 10AR / 15AR / 16AR / 20AR / 25AR

D

C

60,0

B

280,0

61,5

70,0

Model A B C D E F G H I J K L M N O

5WSS30AR 780 152 556 72 380 418,5 844 385 320 130 61,5 94 80 60 62

5WSS40AR 920 151 692 77 511 549,5 1020 440 450 130 61,5 102 100 80 75

5WSS50AR / 60AR 920 162 682 76 610 648,5 1020 504 550 130 61,5 107 100 80 75

A

C

B

D

E

F

H

G

ON M L

I

K

J

5WSS 30AR / 40AR / 50AR / 60AR

All dimensions in mm

Figure 2

Model A B C D

5WSS 07AR 300,0 55,0 55,0 51,5

5WSS 10AR / 15AR 330,0 55,0 70,0 61,5

5WSS 16AR / 20AR / 25AR 360,0 55,0 70,0 61,5

ii

All dimensions in mm

800

500

800

1200

Figure 3

INSTALLATION LOCATION / SÉLECTION DE L’EMPLACEMENT / INSTALLATION LAGE /

POSIZIONAMENTO ED INSTALLAZIONE / UBICACION DE LA UNIDAD /

МЕСТО УСТАНОВКИ

iii

Figure 4

5WSS 07AR / 10AR / 15AR / 16AR / 20AR / 25AR 5WSS 30AR / 40AR / 50AR / 60AR

BALANCING VALVE

ROBINET D’EQUILIBRAGE

DRUCKAUSGLEICHSVENTIL

VALVOLA DI BILANCIAMENTO

VÁLVULA DE EQUILIBRADO

БАЛАНСИРОВОЧНЫЙ КЛАПАН

Figure 5

1: SHUT OFF VALVE

SOUPAPE D’ARRET

SPERRVENTIL

VALVOLA DI CHIUSURA

LLAVE DE PASO

ОТСЕЧНОЙ КЛАПАН

2: WATER OUT

SORTIE D'EAU

WASSERABLAUF

ACQUA IN USCITA

AGUA FUERA

ВЫХОД ВОДЫ

3: WATER IN

ENTREE D'EAU

WASSERZULAUF

ACQUA IN ENTRATA

AGUA EN

ВХОД ВОДЫ

4: Y-STRAINER

EPURATEUR EN Y

Y-SIEB

FILTRO A Y

FILTRO-Y

У-ОБРАЗНЫЙ ФИЛЬТР

5: SHUT OFF VALVE

SOUPAPE D’ARRET

SPERRVENTIL

VALVOLA DI CHIUSURA

LLAVE DE PASO

ОТСЕЧНОЙ КЛАПАН

THREADED ROD

HEX. NUT

WASHER

VIBRATION ISOLATOR

1

2

3

4

5

WASHER

HEX. NUT

VIBRATION ISOLATOR

HEX. NUT

WASHER

THREADED ROD

iv

Figure 7

Figure 8

1: VACUUM PUMP

POMPE À VIDE

VAKUUMPUMPE

POMPA A VUOTO

ESTRAER AIRE

ВАКУУМНЫЙ НАСОС

2: LIQUID VALVE

ROBINET DE LIQUIDE

FLÜSSIGKEITSVENTIL

VALVOLA LIQUIDO

VÁLVULA DEL LIQUIDO

ЖИДКОСТНОЙ ВЕНТИЛЬ

3: GAS VALVE (3-WAY)

ROBINET DE GAZ (3 DIRECTIONS)

GASVENTIL (3-WEGE)

VALVOLA GAS (A TRE VIE)

VÁLVULA DE GAS (3-DIRECCIONES)

ГАЗОВЫЙ ВЕНТИЛЬ (трехходовой)

=

2

3

HANDLE

Lo

POIGNÉE

Lo

SCHALTER

Lo

MANOPOLA

Lo

HANDLE

LO

КЛАПАН Низ

HANDLE

Hi

(ALWAYS CLOSED)

POIGNÉE

Hi

(TOUJOURS FERMÉE)

SCHALTER

Hi

(STETS GESCHLOSSEN)

MANOPOLA

Hi

(SEMPRE CHIUSA)

HANDLE

HI

(SIEMPRE CERRADO)

КЛАПАН Выс. (ВСЕГДА ЗАКРЫТ)

1

R

U

BBER B

USH

ENSURE WATER VALVE ADAPTORS ARE

ALIGNED TO THE CENTER WITHOUT TOUCHING

(min 2mm) THE RUBBER BUSH WHEN MAKING

PIPING CONNECTION.

Figure 6

v

1

5WSS 07AR / 10AR / 16AR / 20AR / 25AR

5WSS 15AR

SCHEMATIC DIAGRAM / SCHÉMA DE PRINCIPE / SCHEMATISCHE DARSTELLUNG /

DISEGNO SCHEMATICO / ESQUEMA / ПРИНЦИПИАЛЬНАЯ СХЕМА

Figure 9

Figure 10

2

3

4

5

!

6

$

5

&

%

1

2

3

4

7

11

8

7

$

9

COOLING OPERATION

HEATING OPERATION

7

8

7

SCHEMATIC DIAGRAM

6

&

%

SCHEMATIC DIAGRAM

COOLING OPERATION

HEATING OPERATION

11

)

(

)

(

vi

1

5WSS 30AR / 40AR / 50AR / 60AR

Figure 11

2

3

4

6

$

5

&

%

#

COOLING OPERATION

HEATING OPERATION

SCHEMATIC DIAGRAM

NOTE:

1. GAS PIPING / TUYAUTERIE DU GAZ / GASLEITUNG / TUBATURE DEL GAS / TUBOS DE GAS / ГАЗОВЫЙ ТРУБОПРОВОД

2. FAN COIL UNIT / VENTILO-CONVECTEUR / LUFTBEHANDLUNGSAGGREGAT / UNITÀ FAN COIL / VENTILOCONVECTOR /

ФАНКОЙЛ

3. FAN MOTOR / MOTEUR DU VENTILATEUR / GEBLÄSEMOTOR / MOTORE VENTOLA / MOTOR DE VENTILADOR /

ДВИГАТЕЛЬ ВЕНТИЛЯТОРА

4. LIQUID PIPING / TUYAUTERIE LIQUIDE / FLÜSSIGKEITSLEITUNG / TUBATURE DEL LIQUIDO / TUBOS DE LÍQUIDO /

ЖИДКОСТНЫЙ ТРУБОПРОВОД

5. 4 WAY VALVE / ROBINET A 4 VOIES / VIERWEGEVENTIL / VALVOLA A 4 VIE / VÁLVULA DE 4 VÍAS / 4-ХОДОВЫЙ ВЕНТИЛЬ

6. COMPRESSOR / COMPRESSEUR / KOMPRESSOR / COMPRESSORE / COMPRESOR / КОМПРЕССОР

7. STRAINER / EPURATEUR / SIEB / FILTRO / FILTRO / СЕТЧАТЫЙ ФИЛЬТР

8. COOLING & HEATING CAP. TUBE / TUYAUX CAP. REFRIGERATION ET CHAUFFAGE / KÜHL- UND HEIZKAPILLARROHR /

TUBO CAPILLARE RAFFREDDAMENTO & RISCALDAMENTO / TUBO CAP. DE REFRIGERACIÓN Y CALEFACCIÓN /

КАП. ТРУБКА ОХЛАЖДЕНИЯ И ОБОГРЕВА

9. COOLING CAP. TUBE / TUYAU CAP. REFRIGERATION / KÜHLKAPILLARROHR / TUBO CAPILLARE RAFFREDDAMENTO /

TUBO CAP. DE REFRIGERACIÓN / ЭЛЕКТРИЧЕСКИЕ СОЕДИНЕНИЯ

10. HEATING CAP. TUBE / TUYAU CAP. CHAUFFAGE / HEIZKAPILLARROHR / TUBO CAPILLARE RISCALDAMENTO /

TUBO CAP. DE CALEFACCIÓN / КАП. ТРУБКА ОБОГРЕВА

11. CHECK VALVE / CLAPET DE NON-RETOUR / ABSPERRVENTIL / VALVOLA DI NON RITORNO / VÁLVULA DE RETENCIÓN / АТ

12. THERMOSTATIC EXPANSION VALVE / DÉTENDEUR THERMOSTATIQUE / THERMOSTATISCHES EXPANSIONSVENTIL /

VALVOLA DI ESPANSIONE TERMOSTATICA / VÁLVULA TERMOSTÁTICA DE ESPANSIÓN / ТЕРМОРЕГУЛИРУЮЩИЙ ВЕНТИЛЬ

13.TUBE IN TUBE HEAT EXCHANGER / TUBE D’ECHANGEUR THERMIQUE / DOPPELROHRWÄRMETAUSCHER /

SCAMBIATORE DI CALORE TUBO IN TUBO / TUBO EN TERMOPERMUTADOR / ТЕПЛООБМЕННИК “ТРУБА В ТРУБЕ”

14. WATER INLET / PRISE D’ENTRÉE D’EAU / WASSEREINTRITTSÖFFNUNG / INGRESSO ACQUA / ENTRADA DEL AGUA /

ВОДОПРИЕМНИК

15. WATER OUTLET / PRISE DE SORTIE D’EAU / WASSERAUSTRITTSÖFFNUNG / USCITA ACQUA / SALIDA DEL AGUA /

ВОДОВЫПУСК

16. WATER SENSOR / CAPTEUR D’EAU / WASSERSENSOR / SENSORE ACQUA / SENSOR DEL AGUA / WATER SENSOR /

ДАТЧИК ВОДЫ

17. HIGH PRESSURE SWITCH / PRESSOSTAT HAUTE PRESSION / HOCHDRUCKSCHALTER / INTERRUTTORE ALTA PRESSIONE/

INTERRUPTOR DE ALTA PRESIÓN / ПЕРЕКЛЮЧАТЕЛЬ ВЫСОКОГО ДАВЛЕНИЯ

18. LOW PRESSURE SWITCH / PRESSOSTAT BASSE PRESSION / NIEDERDRUCKSCHALTER /

INTERRUTTORE BASSA PRESSIONE / INTERRUPTOR DE BAJA PRESIÓN / ПЕРЕКЛЮЧАТЕЛЬ НИЗКОГО ДАВЛЕНИЯ

19. TXV BY PASS CAP. TUBE / CONDENSATEUR DE DÉCOUPLAGE TXV / TXV BYPASS KAPILLARROHR /

TUBO COPERTO BY-PASS TXV / TXV POR PASS CAP. TUBO / TXV ОБХОД ЕМНОСТИ ТРУБКИ

77

+

)

~

(

vii

5WSS 20AR / 25AR

5WSS 07AR / 10AR / 15AR / 16AR

Figure 12

Figure 13

viii

5WSS 30AR

TH

HIGH PRESSURE

SWITCH

CM

C

R

S

4WV

A 4WV

COMP

N

Figure 14

LOW PRESSURE

SWITCH

5WSS 40AR / 50AR / 60AR

TH

HIGH PRESSURE

SWITCH

COMP.

4WV

A 4WV

COMP

LN

Figure 15

LOW PRESSURE

SWITCH

POWER SUPPLY 380-415V/3PH/50Hz

7A

CRANKCASE

HEATER

A1

A2

1L1 3L2 5L3 1

2T1 4T2 6T3 2

RS TN

POWER SUPPLY

220-240V / 1PH / 50Hz

English

This manual provides the procedures of installation to ensure a safe and good standard of operation for Water

Source Heat Pump split type unit.

Special adjustment may be necessary to suit local requirements.

Before using the Water Source Heat Pump split type unit, please read this instruction manual carefully and keep

it for future reference.

INSTALLATION MANUAL

WATER SOURCE HEAT PUMP SPLIT TYPE

AIR CONDITIONER

Part No.: R08019029752

MODEL

R410A

5WSS07AR / A5WSS07AR

5WSS10AR / A5WSS10AR

5WSS15AR / A5WSS15AR

5WSS16AR / A5WSS16AR

5WSS20AR / A5WSS20AR

5WSS25AR / A5WSS25AR

5WSS30AR / A5WSS30AR

5WSS40AR / A5WSS40AR

5WSS50AR / A5WSS50AR

5WSS60AR / A5WSS60AR

IM-5WSS-1103 (1)-Acson

! WARNING

• Installation and maintenance should be performed by qualified persons who are familiar with local code and

regulation, and experienced with this type of appliance.

1-1

! CAUTION

Please take note of the following important points when installing.

• Do not install the unit where leakage of flammable gas may occur.

If gas leaks and accumulates around the unit, it may cause fire ignition.

• Do not overcharge the unit.

This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.

INDEX

- Outline And Dimensions page i

- Installation Location page ii

- Schematic diagram page v

- Installation Location page 1

- Unit Installation page 1

- Physical Data page 2

- Water Piping And Fitting page 2

- Refrigerant Piping page 2

- Flare work page 3

- Vacuuming page 4

- Tightening Torque page 4

- Vacuuming And Charging page 4

- Electrical And Wiring page 5

- Electrical Data page 5

- Recommended Cable Sizes page 5

-

Special Precautions When Dealing With R410A Unit

page 6

- Control Operation Guide page 6

- Unit Operation Limits page 6

- System Cleaning And Flushing page 7

- Unit Start Up And Operation page 8

- Service And Maintenance page 8

- Troubleshooting page 9

INSTALLATION LOCATION

• This unit is designed for indoor installation only.

• Installation work should be done by authorized dealer or qualified contractor.

• Install the unit at a suitable minimum distance or shortest path to the coupling fan coil unit.

• There should be sufficient space for piping connection, service and maintenance. (Refer to Figure 3)

• The area should be isolated from vibration and noise.

• Ensure the area is free from water leakage.

UNIT INSTALLATION

• This unit will be mounted on the ceiling by the support of four threaded rods. (Refer to Figure 4)

• Ensure that the supports are strong enough and properly anchored to withstand the weight of the unit.

• Use isolator rubber (natural rubber) with hardness of 35° for better noise and vibration control.

• Do not locate the drainage system at any point above the drain connection.

1-2

English

PHYSICAL DATA

R410A - Heat Pump

Model 5WSS07AR 5WSS10AR 5WSS15AR 5WSS16AR 5WSS20AR

Nominal Cooling Capacity kW 2.37 2.93 3.58 4.63 6.01

Nominal Heating Capacity kW 2.58 3.08 3.75 4.63 6.74

Unit Weight kg 32.9 34.9 35.5 39.7 49.1

Refrigerant Charge R410A kg 0.600 0.600 0.700 0.725 0.975

Compressor Rotary Compressor

Refrigerant Circuit

Liquid valve connection inches 1/4 1/4 1/4 1/4 1/4

Gas valve connection inches 3/8 3/8 1/2 1/2 1/2

Service port connection (UNF-20) inches 1/2 1/2 1/2 1/2 1/2

Refrigerant - Water Heat Exchanger Tube In Tube

Water inlet (male) inches 1/2 1/2 1/2 1/2 1/2

Water outlet (male) inches 1/2 1/2 1/2 1/2 1/2

Water pressure drop kPa 5.36 5.88 8.12 10.35 14.54

Water flow rate m

3

/h 0.45 0.51 0.75 0.95 1.25

Drain Pipe Connection

Steel Pipe inches 3/4 3/4 3/4 3/4 3/4

Model 5WSS25AR 5WSS30AR 5WSS40AR 5WSS50AR 5WSS60AR

Nominal Cooling Capacity kW 7.62 2.37 2.93 3.58 4.63

Nominal Heating Capacity kW 7.80 2.58 3.08 3.75 4.63

Unit Weight kg 50.0 64.1 95.7 119.6 123.4

Refrigerant Charge R410A kg 1.000 1.200 1.475 1.950 2.300

Compressor Rotary Compressor Scroll Compressor

Refrigerant Circuit

Liquid valve connection inches 1/4 3/8 3/8 3/8 3/8

Gas valve connection inches 5/8 5/8 5/8 5/8 3/4

Service port connection (UNF-20) inches 1/2 1/2 1/2 1/2 1/2

Refrigerant - Water Heat Exchanger Tube In Tube

Water inlet (BSP)MALE inches 1/2 3/4 3/4 3/4 3/4

Water outlet (BSP)MALE inches 1/2 3/4 3/4 3/4 3/4

Water pressure drop kPa 19.03 30.59 9.49 9.59 18.84

Water flow rate m

3

/h 1.4 1.8 2.1 2.55 3.17

Drain Pipe Connection

Steel Pipe inches 3/4 3/4 3/4 3/4 3/4

WATER PIPING AND FITTING

• Install a 40 – 60 mesh strainer to ensure water quality is good.

• Water pipe materials recommended are black steel pipe and copper pipe.

• All piping connections must be properly and firmly connected. Do not over-tighten the connections.

• Users are recommended to install the pipes as shown in Figure 5 & 6.

• The piping need to be cleaned and flushed prior to operation.

• Air vents must be installed at the highest position while a drainage system at the lowest position of the water circuit.

REFRIGERANT PIPING

• Do not use contaminated, dented or used copper tubing.

• Do not use copper tubes with less than 0.8 mm thickness.

• Use a flare tool specially for R410A.

• Do not use mineral oil on flare part.

• Use proper torque wrench to tight the flare nuts. If the torque strength is weak, gas leakage may occur. If it is too tight, the

flare nut may crack and it may be non-removable.

• Use a vacuum pump with a back flow preventing adapter to prevent the vacuum pump oil mix with R410A which will

create sludge and damage the equipment.

• Vacuum unit thoroughly to -76cmHg.

• Insulate the piping to prevent capacity losses and water condensation.

1-3

!!

! CAUTION

• Connection service port at the gas valve is 1/2" UNF-20. It is different from the conventional R22 or R407C connec-

tion. This is to prevent wrong refrigerant charging into the system.

• Beware that R410A standard operating pressure is about 1.6 times higher than R22.

Refrigerant Piping Length, Elevation And Bends

• When piping length becomes too long, both the capacity and compressor reliability drop.

• As the number of bends increases, system-piping resistance to the refrigerant flow increase thus lowering the capacity of the

unit and as a result the compressor may become defective.

• Always choose the shortest path and follow the recommendation as tabulated below.

5WSS07AR 5WSS10AR 5WSS15AR 5WSS16AR 5WSS20AR

Max. Length, L 12 m 12 m 12 m 12 m 12 m

Max. Elevation, H 5 m 5 m 5 m 5 m 5 m

Max. No. of bends 10 10 10 10 10

Liquid Valve Size 6.35 mm (1/4") 6.35 mm (1/4") 6.35 mm (1/4") 6.35 mm (1/4") 6.35 mm (1/4")

Gas Valve Size 9.52 mm (3/8") 9.52 mm (3/8") 12.7 mm (1/2") 12.7 mm (1/2") 12.7 mm (1/2")

FLARE WORK

• Use either a flare tool specially for R410A or a conventional type. Head project dimension may differ according to type of

flare tool.

• Flare end diameter is also different for R410A. Flare section should be uniform or even. Crack on the flare section or burr

on the flare edge is not acceptable. Make new flare tubing again to prevent potential gas leak.

HEAD PROJECTION DIMENSION

Diameter A(mm)

in mm

Clutch Type Conventional

For R410A Clutch type

1/4 6.35 0 – 0.5 0.7 – 1.3

3/8 9.52 0 – 0.5 0.7 – 1.3

1/2 12.7 0 – 0.5 0.7 – 1.3

5/8 15.88 0 – 0.5 0.7 – 1.3

3/4 19.05 0 – 0.5 0.7 – 1.3

FLARE DIE

COPPER TUBE

FLARE NUT

B

D

Diameter, D Flare End Diameter, B

in mm

1/4 6.35 9.1

3/8 9.52 13.2

1/2 12.7 16.6

5/8 15.88 19.7

3/4 19.05 24.0

Models gram/meter

5WSS07AR 18.5

5WSS10AR 18.5

5WSS15AR 18.5

5WSS16AR 18.5

5WSS20AR 18.5

5WSS25AR 18.5

5WSS30AR 18.5

5WSS40AR 47.5

5WSS50AR 47.5

5WSS60AR 47.5

Additional Charge

• The pre-charged of R410 in the Water Source Heat Pump unit is suitable for standard pipe of length up:-

a) 2 meter for 5WSS07/10/15/16/20/25/30/40/50AR

b) 5 meter for 5WSS60AR

When the piping is more than the above stated standard pipe length, kindly add additional charge referring to the table below.

5WSS25AR 5WSS30AR 5WSS40AR 5WSS50AR 5WSS60AR

Max. Length, L 12 m 12 m 35 m 35 m 35 m

Max. Elevation, H 5 m 5 m 10 m 10 m 10 m

Max. No. of bends 10 10 10 10 10

Liquid Valve Size 6.35 mm (1/4") 9.52 mm (3/8") 9.52 mm (3/8") 9.52 mm (3/8") 9.52 mm (3/8")

Gas Valve Size 15.88 mm (5/8") 15.88 mm (5/8") 15.88 mm (5/8") 15.88 mm (5/8") 19.05 mm (3/4")

1-4

English

VACUUMING AND CHARGING

Use a vacuum pump with a back flow preventing adapter to prevent the vacuum pump oil mix with R410A which will

create sludge and damage the equipment. Use only gauge manifold exclusive for R410A for vacuuming and charging.

a) Gauge Manifold

Gauge Manifold (R410A) Connection Port Size

High Pressure Gauge (Red) -0.1 ~ 5.3 MPa

-76 cmHg ~ 53 kgf/cm

2

1/2 UNF -20

Low Pressure Gauge (Blue) -0.1 ~ 3.8 MPa

thread per inch

-76 cmHg ~ 38 kgf/cm

2

Charge Hose (R410A)

Operating Pressure 5.1 MPa (51 kgf/cm

2

)

Burst Pressure 27.4 MPa (274 kgf/cm

2

)

Connection size 1/2 UNF -20 thread per inch

b) Charge Hose

TIGHTENING TORQUE

Use proper torque wrench to tight the flare nuts. If the torque strength is weak, gas leakage may occur. If it is too tight, the flare

nut may crack and it may be non-removable.

Diameter

Torque (Nm)

in mm

1/4 6.35 18

3/8 9.52 42

1/2 12.7 55

5/8 15.88 65

3/4 19.05 100

Unit has to be sufficiently vacuumed to -0.1MPa (-76cmHg). Leave the vacuum for 5 minutes to ascertain the gauge pointer

do not raise again. (Refer to Figure 7 & 8)

VACUUMING

The different size of connection port from the conventional is to prevent wrong refrigerant charging instead of R410A.

c) Refrigerant Cylinder

A typical R410A charging cylinder will be identified with the refrigerant name and is coated with pink in colour as designated

by ARI.

R410A is mixture of refrigerant which have different evaporating temperature. So when charging, make sure only liquid is

being withdrawn from the charging cylinder. Charging gas refrigerant R410A in state will affect the performance and operat-

ing condition of the system. Invert the cylinder that does not come with dip pipe during charging.

Additional Charge Operation

This operation must be done by using a gas cylinder and a precise weighing machine. The additional charge is topped-up into

the outdoor unit using the suction valve via service port.

- Remove the service port cap.

- Connect the low pressure side of the charging gauge to the suction service port, center of the cylinder tank and close the

high pressure side of the gauge. Purge the air from the service hose.

- Start the air conditioner unit.

- Open the gas cylinder and low pressure charging valve.

- When the required refrigerant quantity is pumped into the unit, close the low pressure side and the gas cylinder valve.

- Disconnect the service hose from service port. Put back the service port cap.

1-5

RECOMMENDED CABLE SIZES

ELECTRICAL DATA

!!

! CAUTION

• Ensure the rated voltage and phase of the unit corresponds to the unit name plate before carrying out wiring work.

• The unit must be GROUNDED to prevent hazards due to insulation failures.

• Do not ground any electrical equipment to the water piping.

• Ensure all electrical wiring do not touch the refrigerant piping, compressor, pump or any moving parts.

• Do not operate unit with wet hand(s). It will result in electrical shock.

Model 5WSS07AR 5WSS10AR 5WSS15AR 5WSS16AR 5WSS20AR

Rated Voltage Range**

220-240/1Ph/50Hz

Supply Cable Size

mm

2

1.5 1.5 1.5 1.5 2.5

Number of Cables

333 33

Interconnection Cable Size*

mm

2

1.5 1.5 1.5 1.5 2.5

Number of Cables

555 55

Heat Pump

Model 5WSS25AR 5WSS30AR 5WSS40AR 5WSS50AR 5WSS60AR

Rated Voltage Range**

220-240/1Ph/50Hz 380-415/3Ph/50Hz

Supply Cable Size

mm

2

2.5 4.0 2.5 2.5 2.5

Number of Cables

335 55

Interconnection Cable Size*

mm

2

2.5 4.0 1.5 1.5 1.5

Number of Cables

556 66

ELECTRICAL AND WIRING

•

Refer to the wiring diagram provided on the unit when making electrical wiring connection. (Refer to Figure 12, 13, 14 & 15)

• Power supply is from fan coil unit connection.

• All field wiring must comply with your national or local wiring regulation.

• All terminal wiring must be firmly connected. Improper connection can cause electric shock, short circuit or fire breakout.

• A circuit breaker must be provided for over current protection.

• All safety precautions need to be strictly adhere.

R410A - HEAT PUMP

Model 5WSS07AR 5WSS10AR 5WSS15AR 5WSS16AR 5WSS20AR

Power Supply

V/Ph/Hz

220-240/1/50

Nominal Power Input (Cooling) W 502 642 916 980 1370

Nominal Power Input (Heating) W 512 662 906 940 1520

Nominal Current (Cooling) A 2.3 2.8 4.4 4.4 6.1

Nominal Current (Heating) A 2.3 2.9 4.3 4.3 6.8

Capacitor (440 VAC) µf2030253050

Model 5WSS25AR 5WSS30AR 5WSS40AR 5WSS50AR 5WSS60AR

Power Supply

V/Ph/Hz

220-240/1/50 380-415/3/50

Nominal Power Input (Cooling) W 1444 1967 2485 3101 3629

Nominal Power Input (Heating) W 1594 2047 2475 3041 3329

Nominal Current (Cooling) A 6.5 9.8 4.8 5.8 6.9

Nominal Current (Heating) A 7.2 10 4.7 5.7 6.6

Capacitor (440 VAC) µf50 45 - - -

Fuse Amp - - 7 7 7

1-6

English

UNIT OPERATION LIMITS

Environment

This unit is designed for indoor installation and operation only. This unit also limited to water loop application only as the heat

exchanger can only cater for this application.

Power Supply

A voltage variation of +/- 10% of rated voltage stated in the unit label is acceptable.

Allowable Operation Conditions

Ensure the operating temperature and condition are in allowable range. Extreme variations in temperature, humidity and

corrosive water or air will adversely affect unit performance, reliability and service life.

CONTROL OPERATION GUIDE

• Controller of water source heat pump split type unit is located in the fan coil unit.

• Refer to fan coil unit installation manual for control guide operation.

!!

! CAUTION

• R410A must be charged in liquid phase. Usually R410A cylinder is equipped with a dip pipe for liquid withdrawal. If

there is no dip pipe, invert the cylinder to withdraw R410A liquid.

• If leak occurs, do not top-up any additional R410A refrigerant as this will reduce the unit performance. Instead

evacuate the refrigerant and fix the leakage before vacuuming it thoroughly. Then charge with new R410A refriger-

ant according to the recommended specification.

• If refrigerant gas leak occurs during installation / servicing, make sure the area is ventilate fully.

• Do not allow the piping and unit exposed to air or moisture.

• Install a bi-flow filter dryer (two way) along the liquid line.

Heat Pump

Water Entering Temp. (

o

C)

Water Entering Temp. (

o

C)

32

20

12

45

30

13

STD

Heating Cooling

Indoor Temp. (

o

C DB)

15 20 27 15 19 24

STD

Indoor Temp. (

o

C WB)

SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT

• R410A is a near azeotrope refrigerant mixture of hydro fluorocarbon (HFC) which is environmental friendly. It has Zero

Ozone Depletion Potential (ODP=0) and this conform to Montreal Protocol regulations.

• R410A system has a operating pressure of about 1.6 times higher than R22 at the same temperature.

• Never use copper tubes thinner than 0.8mm.

• R410A compressor uses polyol-ester oil (POE) as lubricant which is prone to moisture contamination (hydroscopic).

Hydrolysis may occur that will generate acid when mix with moisture or water and will damage the compressor winding.

• It has to be treated in a more cautiously manner than other conventional mineral oil.

• Do not expose the system for too long. POE oil will absorb moisture into the system that will generate acid and cause

capillary clogging or compressor motor winding damage. Cover temporary the refrigerant valve or copper tube opening

when performing installation or servicing. Install a bi-flow filter dryer (two-way) along the liquid piping to absorb the

unwanted moisture. Residue POE oil in the piping and components can absorb moisture from the air.

• Do not mix R410A with other refrigerant into the system.

•

Identified refrigerant before charging. R410A refrigerant cylinder is pink coated. Charge only R410A liquid phase into the units.

• Do not add any additional oil into the compressor.

• Use only exclusive tools and equipment for R410A:

i) Manifold gauge and charging hose

ii) Gas leak detector

iii) Refrigerant cylinder (usually pink coated)

iv) Vacuum pump c/w adaptor

v) Flare tools

vi) Refrigerant recovery machine

1-7

Water Pressure Drop Table

Model Water Flow Rate Pressure Drop

m

3

/hr kPa

0.2 3.71

5WSS07AR 0.4 5.00

0.6 6.65

0.3 4.28

5WSS10AR 0.5 5.80

0.7 7.63

0.5 5.80

5WSS15AR 0.7 7.63

0.9 9.72

0.7 2.93

5WSS16AR 0.9 4.58

1.1 7.46

1.0 13.06

5WSS20AR 1.2 15.35

1.4 19.03

The water circulating loop system must be cleaned and flushed to remove all construction debris and dirts before operating the units.

1. If the connection is equipped with water shut-off valve, either electric or pressure operated, the individual supply and

return pipes must be connected together first. This will prevent the introduction of dirt into the unit.

2. Fill the water loop system with your local water supply with all air vents open. After filling, close all air vents. The

contractor should start the main circulator pump with the pressure reducing valve open. Check all vents in sequence to

bleed off any trapped air, ensuring circulation through all components of the system. Power to the heat rejector unit should

be off and the supplementary heat control set at 27

o

C (80

o

F).

3. While the water is circulating, the contractor should check and repair any leaks in the piping. Drains at the lowest point(s)

in the system should be opened for initial flush and blow down. Make sure the local supply water valves are set to make up

for the required flow rate. Check the pressure gauge at the pump suction and manually adjust the make up to hold the same

positive steady pressure both before and after opening the drain valves. Flush should be continuously for two hours or

longer if required to obtain a clean and clear drain water.

4. Shut off all supplemental heater and circulator pump and open all drains and vents to complete drain down the system.

Now, the short-circuited water connection to the supply and return pipes should be removed and connected to the indi-

vidual water inlet and outlet of the unit. Use proper tape to seal off at the valve connection. Do not use sealant at the valves

connection.

5. Trisodium phosphate was formerly recommended as a cleaning agent during flushing. However, some of the local authori-

ties ban the usage of the phosphate into the sewage systems. The current recommendation is to simply flush longer with

warm at 27

o

C (80

o

F) water.

6. Refill the water loop system with clean water. Test the water for acidity by using a litmus paper. Treat the water if required

to obtain the pH level between 7.5 to 8.5 (slightly alkaline). If antifreeze is required, use only antifreeze designed for

HVAC. Do not use automotive grade antifreeze.

7. Once the water system is ready, ensure at all times only clean water is supply to the system. Dirty water will result in wide

degradation of performance and solids may clog valves, strainers, flow regulator, etc. Pump work will increase and may

damage the pumps. The heat exchanger may become clogged as well which will reduce the compressor service life or

causes premature failure.

8. Finally set the loop water controller heat addition point to 21

o

C (70

o

F) and the heat rejection set point to 29

o

C (85

o

F).

Supply power to all motors and start the circulating pumps. After full flow has been established through all components

including heat rejector (regardless of season) and air vented and loop temperature stabilized, each of the air conditioners

will be ready for check, test and start up, air balancing and water balancing.

SYSTEM CLEANING AND FLUSHING

Model Water Flow Rate Pressure Drop

m

3

/hr kPa

1.2 14.86

5WSS25AR 1.4 19.46

1.6 23.72

1.6 24.76

5WSS30AR 1.8 30.59

2 36.42

1.9 7.53

5WSS40AR 2.1 9.49

2.3 12.03

2.3 6.67

5WSS50AR 2.5 8.98

2.7 11.83

3 16.31

5WSS60AR 3.2 19.28

3.4 22.21

1-8

English

1. Make sure all wiring connection is correct and power supply is compatible to the rated voltage.

2. Open all valves in full open position and start the circulating pump. Make sure there is water running through the water

loop before operating the unit.

3. Set to mode ‘Cool’. Then set the temperature to the coolest. The unit has time delay which protects the compressor for

short cycling. Wait for a few minutes before check on the air discharge for cool air delivery.

4. Measure the temperature difference between entering and leaving water. It should before approximately 1.3 to 1.5 times

greater than the heating mode temperature difference.

Example: If water temperature difference in cooling mode is 5°C (9°F), the heating mode difference should be 3.3°C

(6°F).

5. If without automatic flow control valves, target the cooling mode water temperature difference between 5°C (9°F) to 8°C

(14.4°F). This can be achieved by adjusting shut-off / balancing valve in the return piping to a suitable water flow rate to

achieve the desire temperature difference.

6. Set to mode ‘Heat’. Set the temperature to the warmest. Again the air conditioner has built in time delay that prevents the

compressor to start immediately. The fan will start first before the compressor. Check for warm air discharge. If it is a ‘cold

building’ start-up, leave the unit running until return air to the unit is at least 18°C (65°F).

7. Measure the temperature difference between entering and leaving water. With entering water temperature of 16°C to 27°C

(60°F to 80°F), leaving water temperature should be 3.3°C to 6°C (6°F to 12°F) cooler and the air temperature rise through

the machine should not exceed 19°C (35°F). If the air temperature exceeds 19°C (35°F), then the water flow rate is

inadequate.

8. Check for vibration refrigerant piping, fan wheels, etc.

NOTE

• Water source heat pump split type unit is controlled by fan coil unit.

• The controller is located on the fan coil unit.

!!

! CAUTION

• Ensure there is water supply into the unit at all times before operating.

UNIT START UP AND OPERATION

SERVICE AND MAINTENANCE

• Service and maintenance should be performed by authorized dealer or qualified contractor.

• Internal components can be accessed through two service panels (front and back). External control box for easy access of

electrical components.

• Regular checks on the water strainer are recommended. Clean the strainer if dirty or clogged.

• Maintain a log data on measurement of volts, amps, and water temperature difference (heating & cooling) is recommended.

A comparison of the data during start-up and periodic data is useful as indicator of general condition of equipment.

!!

! CAUTION

• Do not attempt to do any service or maintenance when the unit is operating.

• Unauthorized modification of the unit is not allowed.

1-9

TROUBLESHOOTING

• Troubleshooting must be performed by authorized dealer or qualified contractor.

Fault Cause / Check Point

Unit cannot start 1. Power supply plug disconnected.

2. Circuit breaker or fuse tripped / blown.

3. Wiring connection

4. If fault persist, contact your installer.

Neither fan coil unit and 1. The fuse may be blown or circuit breaker opened.

compressor run 2. Check electrical circuit or motor winding for shorts or grounds. Investigate for

possible over loading. Replace fuse if necessary.

3. Check wiring connections. Wire may be loosening. Replace or tighten.

4. Control system may be faulty.

Compressor does not 1. Check capacitor if available. Replace capacitor if faulty.

operate. 2. Check wiring connection. Wire may be loosening. Replace or tighten.

3. The high pressure switch may tripped due to:

a) No or insufficient water flows into and leaves heat exchanger. May be clogged.

b) Water entering temperature higher than the maximum operating conditions.

c) Not enough air flow into fan coil unit. May be due to dirty filter or block by object,

cardboard and etc (heating mode).

d) Fan coil motor failure (heating mode).

e) Unit over-charged. Release some of the refrigerant charge.

4. The compressor internal/external overload protection is opened. If the compressor body

is extremely hot, the overload will not reset until it cooled down.

5. The compressor winding may be grounded to the compressor shell. If so, replace

the compressor.

Insufficient cooling 1. Check controller temperature setting.

or heating. 2. Filter may be clogged. Check and clean the filter.

3. Check capillary tube for possible restriction of refrigerant flow. Replace capillary tube

if proven so.

4. The reversing valve may be defective (valve position is not shifted properly), creating

a bypass of refrigerant. Check the reversing valve coil connection.

5. Check for restriction of air and water flow.

6. Refrigerant leakage. Check all piping bends and connection for leakage. Repair the

leakage area or replace with new piping.

7. Window or door wide open.

8. Unit may be under-sized.

Insufficient water flow 1. Valves are not opened fully.

through heat exchanger 2. Circulating water pump is faulty.

3. Water pipes or strainers are clogged.

Noisy operation 1. Check for loose bolts or screws.

2. Make sure rubber isolators are used for installation.

3. Check for water balance to unit for proper water flow rate.

4. Check for tubing touching compressor or other surface. Readjust tubing by bending

it slightly.

5. Fan (fan coil unit) knocking / hitting on its housing.

6. May be due to worn compressor bearing.

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