wphz wphbz installation, operation and maintenance …

WPHZ WPHBZ Cooling only Heat pump

COMPACT HORIZONTAL

Models 091, 121, 141, 171, 201, 251, 351, 401, 501, 701, 751, 1001, 1201

Cooling capacities from 2,7 kW to

Heating capacities from 3,2 kW to

04.15 200346 Rev105

WPHBZ Heat pump

HORIZONTAL SELF-CONTAINED WATER-TO-AIR UNITS

121, 141, 171, 201, 251, 351, 401, 501, 701, 751, 1001, 1201

from 2,7 kW to 40,5 kW

from 3,2 kW to 49,6 kW

AIR UNITS

121, 141, 171, 201, 251, 351, 401, 501, 701, 751, 1001, 1201

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204.15 200346 Rev105

SUMMARY

SAFETY PRECAUTIONS ............................................................................................................................................ 4

TECHNICAL FEATURES ............................................................................................................................................. 5

OPERATION LIMITS .................................................................................................................................................... 7

SYSTEM ELECTRICAL ELEMENTS ........................................................................................................................... 7

DIMENSIONES ............................................................................................................................................................ 8

MODELS WPHZ-WPHBZ 091 - 201 ................................................................................................................................................8

MODELS WPHZ - WPHBZ 251 – 401 ..............................................................................................................................................9

MODELS WPHZ - WPHBZ 501 – 751 ..............................................................................................................................................10

MODELS WPHZ – WPHBZ 1001 – 1201 .........................................................................................................................................11

UNIT RECEPTION ....................................................................................................................................................... 12

INSPECTION UPON RECEIPT .......................................................................................................................................................12

RIGGING .........................................................................................................................................................................................12

STORAGE .......................................................................................................................................................................................12

UNIT INSTALLATION .................................................................................................................................................. 13

INSTALLATION LOCATION ............................................................................................................................................................13

UNIT SETLEMENT ..........................................................................................................................................................................13

SERVICE AREA (MM) .....................................................................................................................................................................13

WEIGHT DISTRIBUTION (KG) ........................................................................................................................................................13

DRAINAGE ......................................................................................................................................................................................14

AIR DUCTS .....................................................................................................................................................................................14

TRANSMISSION ADJUSTMENT .....................................................................................................................................................14

COMPRESSOR LUBRICATION ......................................................................................................................................................15

REFRIGERANT CHARGE ...............................................................................................................................................................16

WATER CONNECTIONS AND COMPONENTS OF THE SYSTEM WITH WPHZ-WPHBZ ........................................ 16

DIAGRAM OF WATER CONNECTIONS AND COMPONENTS .......................................................................................................17

WATER CONNECTIONS OF PRESOSTATIC VALVE OPTIONAL ..................................................................................................18

START UP ................................................................................................................................................................... 19

MANTENIMIENTO ....................................................................................................................................................... 19

304.15 200346 Rev105

PURPOSE OF THIS MANUAL

This manual has been redacted to allow a correct installation, start-up and maintenance of the unit. For this reason is essential to read the instructions paying due care and attention.

Manufacturer declines any responsibility, for possible damages on persons or stuff, as a consequence of an improper use of this unit and/or non-compliance with these instructions.

PRESERVATION OF THIS MANUAL

This manual and the electric diagram of the unit must be retained and remain available to the operator for further consultation.

LOCAL SAFETY STANDARDS

Follow the local security standards during installation and maintenance.

ELECTRICAL NETWORK

Check that electrical network features are in accordance to data shown in the unit’s nameplate.

PACKAGING

Packaging material (plastic wrappings, expanded polystyrene, screws and nails, etc.) are potentially hazardous and must be kept out of children’s reach. Recycle packing materials in accordance with local legislation.

MAINTENANCE

Before performing any maintenance in the machine, disconnect the unit’s power supply. The operations must be carried out in compliance with local safety regulations .

PERIODIC INSPECTIONS

Check the unit periodically to detect any missing or broken parts. If the product is not repaired could cause damage to people or things.

FAULTY OPERATION

Turn off the unit if malfunction is detected.

REPAIRS

If repairs are needed, use only the manufacturer approved service centers and always insist on original spare parts. The use of non-original parts and/or unauthorized service centers may result in unsafe operation of the unit.

MODIFICATIONS

All manufacturer's responsibility is declined when the warranty has been expired in case of electrical and/or mechanical modifications.

Alterations in general not expressly allowed and not respecting which is instructed here, they cause the warranty expiration.

USE

The unit should be used solely for the purpose for which it was designed. The manufacturer bears no responsibility in the case of applications other than the specified use.

PRINCIPLES OF SAFETY IN THE INSTALLATION

The unit is designed and constructed so that not suppose any risk to the health and safety of persons. We have taken appropriate measures to eliminate possible causes of risk in the installation solutions.

DATA UPDATES

Continuous improvements to the product may determine variations in the data given in this instructions even without notice by the manufacturer.

STANDARDS AND CERTIFICATIONS

ISO 9001:2008 CERTIFICATION: HIPLUS AIRE ACONDICIONADO S.L always search satisfaction on its costumers, it is accredited in the Quality System ISO 9001:2008 referred to their own productive activity. It is manifested in a continuous commitment to improve the quality and reliability of all our products; commercial activity, design, source materials, production and post sale service, are the way that allows us to accomplish our targets.

CE QUALIFICATION: HITECSA units have CE brand in accordance with the expected for the relevant community directive, and its last modifications, as well as for each country's national legislation.

404.15 200346 Rev105

SAFETY PRECAUTIONS

− Installation and maintenance of air conditioning equipment can be dangerous because the system is under the pressure, has high temperature of some elements and includes electrical components.

− Only qualified and trained service personnel shall install, start up and make maintenance of air conditioning equipment.

− Nonqualified personnel can only do basic maintenance : cleaning, filter replacement, etc.

− During every visit, follow recommendations from the Installation, Operation & Maintenance manual, what is shown on unit’s stickers and take other legal precautions of safety.

− Follow strictly all safety codes.

− Use safety glasses, work gloves and any other work safety accessory.

− For brazing operations, use a quenching cloth and have at close distance fire extinguisher.

− When repairing the unit, use only original spare parts and install them properly in the same place where have been located old parts.

− Do not install the unit in explosive atmosphere.

− These units are designed to work with 100% recirculated air. Installation with 100% outdoor air is prohibited. See the limits and performance.

Before starting installation, service or maintenance, turn off system main power switch to avoid electrical shock that

could cause people injury.

It is recommended that an electrochemical filter is added to prevent the possible problem of galvanic pair in the event that

the material of the water installation was different from that supplied with the chiller.

504.15 200346 Rev105

TECHNICAL FEATURES

MODEL 091 121 141 171 201 251 351

CAPACITIES

Nominal cooling capacity kW 2.65 3.5 4.1 5.2 6.4 13.4 16.6

Nominal heating capacity kW 3.2 4.1 4.8 6.1 7.6 15.8 19.6

REFRIGERANT

Type 470C

Charge Kg 1.0 1.1 1.3 1.4 1.5 1.7 2.2

COMPRESSOR

Type Rotary

Quantity 1

Power supply (50Hz~) V 230.I 230.I 230.I 400.III

Power input (cooling) kW

Current absorbed (cooling) A

Power input (heating) kW

Current absorbed (heating) A

EVAPORATOR INDOOR FAN

Type Double suction centrifugal

Quantity 1

Model 186/176

DA 7/7 DA 7/7 DA 9/7 DD 9/7 DD 9/7 DD 10/10 DD

Engine power kW 0.06 0.06 0.120 0.120 0.120 0.120 0.370

Power supply (50Hz~) V 230.I 230.III

INDOOR HEAT EXCHANGER

Type Copper tubes aluminum fins coil

Face area m2

0.165 0.165 0.165 0.188 0.188 0.235 0.235

Fin space mm –

(“) 2.4 - 3/8 1.8 - 3/4 1.8 - 3/8 2.1 - 3/8 2.1 - 3/8 2.1 - 3/8 2.1 - 3/4

OUTDOOR HEAT EXCHANGER

Type Welded plates

Quantity 1

Water connections (MTP) (“) 1/2 1/2 1/2 3/4 3/4 3/4 3/4

Number of plates 30 34 34 24 24 14 18

ELECTRICAL DATA

Power supply (50Hz~) V 230.I 230.III 400.III

Total power input (cooling) (1) kW 1.00 1.20 1.30 1.60 1.87 2.50 3.70

Total current input (cooling) (1) A 5.1 6.1 6.6 8.2 9.6 12.8 18.9 6.3

Max. power input (cooling) (2) kW 1.19 1.43 1.55 1.91 2.23 2.98 4.42

Max. current input (cooling) (2) A 6.1 7.7 7.9 9.8 11.4 15.2 22.6 7.5

Total power input (heating) (3) kW 1.20 1.50 1.60 1.80 2.00 2.60 3.80

Total current input (heating) (3) A 6.1 7.7 8.2 9.2 10.2 13.3 19.4 6.5

Max. power input (heating) (4) kW 1.34 1.68 1.79 2.02 2.24 2.91 4.26

Max. current input (heating) (4) A 6.9 8.6 9.2 10.3 11.5 14.9 21.8 7.2

Start-up current A 24 36 38 47 54 80 97

SOUND LEVELS

Sound pressure at 2m dB(A) 58 58 59 60 62 63 64

(1) Dry air temperature 27ºC. Indoor air wet temperature 19ºC. Condensation temperature 40ºC.


(3) Dry air temperature 21ºC. Condenser water inlet temperature 16ºC.


604.15 200346 Rev105

MODEL 401 501 701 751 1001 1201

CAPACITIES

Nominal cooling capacity kW 13.4 16.6 20.6 25.1 35.4 40.5

Nominal heating capacity kW 15.8 19.6 24.8 30.1 41.8 49.6

REFRIGERANT

Type 470C

Charge Kg 2.7 3.3 3.6 3.8 4.8 6.0

COMPRESSOR

Type Scroll Alternative

Quantity 1

Voltaje (50Hz~) V 230.II 400.III

Power input (cooling) kW

Corriente absorbida (cooling) A

Power input (heating) kW

Power input (heating) A

EVAPORATOR INDOOR FAN

Type Double suction centrifugal

Quantity 1

Model 10/10 DD 10/10 SS 12/9 SS 12/12 SS 12/12 SS 15/15 SS

Engine power kW 0.370 0.550 0.750 1.100 1.100 1.100

Power supply (50Hz~) V 400.III 400.III 400.III

INDOOR HEAT EXCHANGER

Type Copper tubes aluminum fins coil

Face area m2

0.235 0.350 0.473 0.450 0.648 0.648

Fin space mm –

(“) 2.1 – 3/8 2.1 – 3/8 2.1 - 3/8 2.1 - 3/8 2.1 - 3/8 2.1 - 3/8

OUTDOOR HEAT EXCHANGER

Type Welded plates

Quantity 1

Water connections (MTP) (“) 1 1 1/4 1 1/4 1 1/2 1 1/2 1 1/2

Number of plates 20 24 28 26 36 40

ELECTRICAL DATA

Power supply (50Hz~) V 400.III 400.III 400.III

Total power input (cooling) (1) kW 4.30 4.80 6.40 8.3 11.00 13.40

Total current input (cooling) (1) A 7.3 8.2 10.9 14.1 18.7 22.8

Max. power input (cooling) (2) kW 5.13 5.73 7.64 9.91 13.10 16.00

Max. current input (cooling) (2) A 8.7 9.7 13.0 16.8 22.3 27.3

Total power input (heating) (3) kW 4.40 5.00 6.60 8.60 11.3 13.80

Total current input (heating) (3) A 7.5 8.5 11.2 14.6 19.2 23.5

Max. power input (heating) (4) kW 4.93 5.60 7.39 9.63 12.70 15.50

Max. current input (heating) (4) A 8.4 9.5 12.6 16.4 21.6 26.4

Start-up current A 46 53 68 87 108 130

SOUND LEVELS

Sound pressure at 2m dB(A) 64 65 68 68 69 70





704.15 200346 Rev105

OPERATION LIMITS

COOLING CYCLE min. ºC max. ºC HEATING CYCLE min. ºC max. ºC

indoor air entering dry bulb 19 31 indoor air entering dry bulb 18 24

indoor air entering wet bulb 15 21 condenser water inlet 12 27

condensation temperature 35 65

condenser water inlet 15 45

Note: units can work at altitude till 1500m.

SYSTEM ELECTRICAL ELEMENTS

− The electrical power supply to the unit shall comply with data on the nameplate.

− Damages resulted from unit start up at incorrect voltage are not covered by manufacturer guarantee.

− When making electrical connections, always use unit wiring diagram.

− Be sure that compressor crankcase heater is energized before starting up the unit.

− Unit power supply shall be within 10% of voltage indicated on the unit nameplate.

− - Do not operate unit at different current from that shown on unit nameplate.

− The installer has to install line protection elements according to applicable laws.

− The electrical interconnecting wires have to be in protection tube or inside groove channel.

1

2

3

4

5

6

Power supply + Neutral (091- 351 *Monophasic) (351-1201 **Triphasic)

Earth

Crankcase hater 230/1/50 Time-lag or magnetothermal fuses curve D

Main power switch

Remote control

Turn off the main power switch before starting any type of intervention to avoid personal injury.

804.15 200346 Rev105

DIMENSIONES

MODELS WPHZ-WPHBZ 091 - 201

APROX. WEIGHT (kg)

MODEL 091 121 141 171 201

Net weight 79 80 82 85 87

Packaged weight 94 95 97 100 102

DIMENSIONS (mm)

MODEL A B C D E F G H I

091 1005 25 213 106 314 128 177 80 42

121-141 1005 25 236 95 314 226 125 34 42

171-201 1015 20 236 95 400 264 155 51 87

LEGEND

1 water outlet

2 water inlet

3 Drainage 3/4” MPT

4 air filter

5 compressor

6 electrical panel board

7 turbine

8 turbine engine

9 plate exchanger

10 coil

11 electrical connections

12 presostatic valve connections (opt)

AA access panel

904.15 200346 Rev105

MODELS WPHZ - WPHBZ 251 – 401

APROX. WEIGHT (kg)

MODEL 251 351 401

Net weight 104 115 120

Packaged weight 119 130 135

DIMENSIONS (mm)

MODEL A B C D E F G H I J K L M N O P Q R S

251 630 1030 583 1095 1135 592 238 148 459 47 24 260 182 88 414 70 46 70 347

351-401 630 1030 583 1095 1135 592 338 98 459 47 24 293 200 37 414 70 46 70 347

LEGEND

1 water outlet

2 water inlet

3 drainage 3/4” MPT

4 air filter

5 compressor


7 turbine

8 turbine motor

9 plate exchanger

10 coil

11 Switch (351-401)



AA access panel

1004.15 200346 Rev105

MODELS WPHZ - WPHBZ 501 – 751

APROX. WEIGHT (kg)

MODEL 501 701 751

Net weight 160 200 225

Packaged weight 175 215 240

DIMENSIONS (mm)

MODEL A B C D E F G H I J

501 114 414 92 88 199 293 128 135 338 732

701-751 82 478 60 72 210 345 65 146 315 932

LEGEND

1 Switch


3 water outlet

4 water inlet


6 air filter

7 compressor


9 turbine motor

10 turbine

11 plate exchanger

12 coil


AA access panel

1104.15 200346 Rev105

MODELS WPHZ – WPHBZ 1001 – 1201

APROX. WEIGHT (kg)

MODEL 1001 1201

Net weight 275 290

Packaged weight 290 305

DIMENSIONS (mm)

MODEL A B C D E

1001 398 200 343 240 117

1201 475 161 405 265 30

LEGEND

1 switch


3 water outlet

4 water inlet


6 air filter

7 compressor


9 turbine engine

10 turbine

11 plate exchanger

12 coil

13 plate exchanger

AA access panel

1204.15 200346 Rev105

UNIT RECEPTION

INSPECTION UPON RECEIPT

− It is advisable to examine carefully the unit upon receipt.

− Inspect equipment received for damage or missing element. If units are damaged or shipment is incomplete, immediately file the claim with the transport company. (First 48h)

− Check if unit nameplate voltage is correct and agrees with local power supply.

− In case of detecting any damage or anomaly it is recommended to contact the manufacturer.

RIGGING

− Before moving the unit, be sure that all unit panels are well fixed.

− Raise and set down the equipment carefully.

− During the transport, never incline the unit more than 15 degrees.

− When lifting the unit ensure that it is balanced and steady, keep in mind that the heaviest part is where the compressor is installed.

− Always move the unit in its original packaging until installation place.

STORAGE

If the unit has to be stored before installation, several precautions must be taken to prevent any damages or any type of deterioration:

− Do not storage the unit in locations with temperatures over 50ºC and preferably without exposure to direct sunlight.

− The minimum storage temperature is -10ºC.

− The maximum storage relative humidity is 90%

− Do not place any objects on the unit (unless it is done within the limits of overlay planes indicated on the packaging) .

− Avoid placing the unit with heat-shrinkable protection exposed to the sun , as the pressure of the circuits can assume values that could lead to activate the safety valves.

1304.15 200346 Rev105

UNIT INSTALLATION

INSTALLATION LOCATION

− Check if the construction is able to support the unit’s weight.

− Choose a place free of dust and waste.

− Check that service area is the one indicated for the unit’s dimensions.

− Consult and respect all regulations concerning installation of air conditioning systems.

− Ensure that the direction of the sound level will not cause discomfort.

UNIT SETLEMENT

− Make sure the unit is correctly leveled

− The base frame shall be strong and solid enough to support the weight of the machine.

− Assure the drainages work correctly

− It is recommended to use vibration isolators to avoid noise and vibration transmission.

SERVICE AREA (MM)

WEIGHT DISTRIBUTION (KG)

MODEL 1 2 3 4

091 18 18 18 18

121 19 19 19 19

141 19 19 19 19

171 20 20 20 20

201 21 21 21 21

251 25 25 25 25

351 28 28 28 28

401 29 29 29 29

501 38 38 38 38

701 49 49 49 49

751 55 55 55 55

1001 67 67 67 67

1201 71 71 71 71

1404.15 200346 Rev105

DRAINAGE

− All the drainages are supplied with a Ø3/4“ gas connection.

− Condensate evacuation line diameter shall be equal or larger than unit drain connection depending on line length and building configuration.

− The condensate line shall have a minimum slope of 2% for proper water evacuation.

− If drain line is exposed to air temperatures below 0 ºC, it is necessary to provide thermal insulation or electrical heating resistance to avoid water freezing and tube damage.

− It is convenient to install trap with proper dimensions.

AIR DUCTS

− Air duct dimensions are determined in function of unit air flow and external static pressure.

− Qualified technician shall assure air duct design.

− Use air ducts made of nonflammable material, which in the case of fire will not emit toxic gases. It is advisable to use sheet metal ducts with thermal insulation.

− Use flexible connections to connect air ducts to the unit to avoid vibration and noise transmission.

TRANSMISSION ADJUSTMENT

Adjust transmission in such a way that indoor motor consumption reaches its nominal value.

If consumption is below the nominal value, it means that unit’s air flow is too low.

To change fan speed:

1. In order to remove the transmission belt, move the engine along its track.

2. Loosen pulley set screws and rotate the moving sheave depending on the needs.

3. Tighten set screws.

4. Replace transmission belt in pulley groove.

5. Tighten transmission belt using tensor screw.

To align fan and motor pulleys:

1. Loosen fan pulley set screw

2. Slide fan pulley along the shaft and align it with motor using a ruler and be sure it is parallel to the belt transmission.

3. Tighten fan pulley set screw.

1

2

3

4

5

6

Motor

Motor pulley

Transmission belt

Fan pulley

Tensor set screw Set screw

7

8

Fixed sheave

Moving sheave

1504.15 200346 Rev105

* The standard unit is shipped with a variable pulley turns open .

To adjust transmission belt tension:

− Loosen the rod mounting plate and slide motor .

− The flexibility of the transmission belt is calculated in millimeters , dividing the S value between 40.

COMPRESSOR LUBRICATION

− Compressors designed for 407C use polyester synthetic lubricant oils. Each compressor manufacturer is using different oil for its products.

− The system cannot remain open to atmosphere more than 15 minutes and oil shall not be mixed with any other substance.

− The polyester synthetic lubricant has the capacity to absorb moisture 100 times more than the mineral oil used with the refrigerant R22 .

1604.15 200346 Rev105

REFRIGERANT CHARGE

− The unit is shipped with a full charge of refrigerant 407C for operation.

− If symptoms of refrigerant loss appear during operation, it’s necessary to carry out a leak test.

− Immediately repair all refrigerant leaks.

− If a gas leak is found, it will be necessary to extract and completely recover the refrigerant charge. Pressurize the system with dry nitrogen.

− If no leakage is detected, then do the vacuum and charge again with refrigerant.

− If it is necessary to add or recover 407C refrigerant, always do it in LIQUID state. Charging by mistake refrigerant in gas or vapor form will result in wrong mixture conditions.

− Never overcharge the system.

− Never use compressor as vacuum pump.

− Oil extracted from the system should be stored.

− After detecting a refrigerant leak it is necessary to recover all refrigerant and send it to the manufacturer to recycle.

WATER CONNECTIONS AND COMPONENTS OF THE SYSTEM WITH WPHZ-WPHBZ

Among the hydraulic circuit and its components, the plate heat exchanger is the most delicate part, and as a result must follow at least these guidelines:

− The installation must be carried out according to the schemes of document 200 225.

− The water filter must be installed and must contain a mesh to retain particles of diameter not exceeding Ø > 0,5mm.

− Filter maintenance and flow switch must be made within a periods in which dressings are avoided that block the unit.

− Respect the indication of water inlet and water outlet, and install a bypass valve if necessary .

− When working with open circuits in which water quality is not correct and the problem is indicated in the table, it is advisable to install a secondary exchanger to prevent deterioration.

Element contained in water Concentration mg/l Effects of a higher value Effects of a lower value

Suspended solids Variable Can erode the material No effects were observed.

Conductivity < 500 µs/cm No effects were observed. -

> 500 µs/cm - Not recommended

NH3 Must be between 2 and 20 Not recommended No effects were observed.

Chlorides < 300 - No effects were observed.

> 300 Corrosive capacity -

Ireon < 10 No effects were observed. -

> 10 - Corrosive capacity

Carbonic acids Must be between 20 and 50 Can erode the material Not recommended

PH Must be between 6 and 9 Can erode the material No effects were observed.

Sulphates Must be between 70 and 300 No effects were observed. Corrosive capacity

Langelier Must be between -0,5 and +0,5 Water with tendency to create incrustations Water with corrosive tendency

Never use oxygen to pressurize system or purge lines for leak test. Oxygen reacts violently with oil, which can cause an explosion resulting in damage, personal injury or death.

It is required to ensure that water flows through the plate heat exchanger when loading or recover refrigerant, thus avoiding the possibility of freezing . Otherwise may damage exchanger plates.

If it is necessary to weld, first fill the circuit with dry nitrogen. The 407C refrigerant burning turns out in toxic gas emission.

1704.15 200346 Rev105

DIAGRAM OF WATER CONNECTIONS AND COMPONENTS

3

4

7

8

11

12

Flexible connection

Condensates drain tube

Dry cooler

Auto air purge

Pressure gauge Water pump

15 Flow switch

1

2

5

6

9

10

Unit WPHZ-BZ

Air ducts

Glove valve

Water line

Water filter Thermometer

13

14

Drainage

Expansion tank

It is mandatory to install a flow switch on the water inlet of the machine and a previous installment of 1.5m in a straight line without changing the section to ensure that the flow rate of the fluid is laminar. Failure to comply with these guidelines causes

loss of equipment warranty.

1804.15 200346 Rev105

WATER CONNECTIONS OF PRESOSTATIC VALVE OPTIONAL

NOTAS

− Connect presostatic valve intake to high pressure intake of the unit.

− Drawing indicates heat pump connections. Do not mount the solenoid valve in Cooling only units..

− When presostatic valve is mounted, must be timed the operation of the flow switch for 1 minute after the compressor starts .

− Check if all wires are well tightened.

− Check if all panels are firmly secured with screws.

− Verify if there is no refrigerant or oil leakage.

− Verify if unit is installed on level.

− Verify if is enough space for service and maintenance.

− Check if drain is not blocked.

− Check for leaks of water. Check valves are working properly.

− Check the water pipe system allows drainage to repair or stop.

− Check if crankcase heater of each compressor has been energized at least 24 hours before unit start-up.

− Verify if air filters are clean and correctly mounted.

− Check all grilles, air diffusers, air ducts and flexible connections.

− Be sure that electrical power supply complies with that indicated on unit nameplate.

− Check the direction of rotation of fans.

BEFORE START-UP

1

2

3

4

5

6

Flexible connection

Glove valve

Presostatic valve

Solenoid valve ON/OFF

Flow switch Water mesh filter

7 Drainage

1904.15 200346 Rev105

START UP

− First run water pump for a couple of minutes. Stop water pump check if automatic purge is working and air is being evacuated.

− Repeat the operation for 10 times. If it has been performed as indicated air has been removed and water circuit is full.

− Now disconnect the unit and remove and clean the water mesh filter. System performance will improve due to high pressure drop of the water mesh filter.

− Start-up shall be performed by qualified technical people.

− Make start-up check list and use similar check up for service and maintenance. Record air inlet and outlet temperatures to the indoor coil, volts and amps of each compressor and fan motor, suction and discharge pressure of each compressor.

− Should be reminded that after 4 hours of system operation, it is necessary to clean air filters.

− Observe at least 3 cooling cycle operations.

MANTENIMIENTO

− I t is advisable to make maintenance every 1000 hours of system operation and at the end of summer season.

− Coils: At least once a year clean condenser coils with water and detergent and later dry with air at a pressure of 600 kPa. Never clean coil with wire brush.

− Indoor fans: check fan rotation and see observe the state of fan supports. Verify transmission elements and belt operation.

− Drainage system: Check if drain is not blocked. Check the operation of the water collection tray and drainage.

− Refrigeration circuit: check for oil or refrigerant leaks, noise and system vibrations. Take temperature and pressure readings and record it on the maintenance form.

− Electrical circuit: Check if wire connections at terminals, contactors and other elements are well tightened. Record kW and Amps for each phase of compressor and condenser fan motors. Check also star-up current.

− Air filters: Clean air filters after 4 hours of system operation and every 3 months (or more depending on operation). Filters can be cleaned by immersion in warm water with soap, and later washed in clean water. Then let it dry.

− Plate heat exchanger: It is necessary, at least once a year, to clean heat exchangers of evaporator.

The heat exchanger is cleaned by circulating the cleaning liquid inside. An acid reservoir at 5% is used (5% phosphorous acid, and if necessary to make cleaning more often use 5 % oxalic acid). Introduce the cleaning fluid through the exchanger. For effective cleaning should circulate the acid at least 1.5 times the speed of normal flow of water, and if possible in the opposite direction . After this, circuit should be cleaned with plenty of water to remove traces of acid. Refill with new water and start.

It is important to evacuate air from the system and cleaning of dirt particles from the water circuit. The two operations must be done at the same time.

Before performing service or maintenance operations of unit, turn off main power switch to avoid personal injury and put lock on power switch to avoid that any person other than the maintenance technician can switch on electrical supply.

1 2 3 Plate heat exchanger Water-acid solution tank

Water pump

HIPLUS AIREACONDICIONADO S.L. Masia Torrents, 2Tel. +34 93 893 49 12Fax. +34 93 893 96 1508800 Vilanova i la GeltrúBarcelona, Spain www.hitecsa.com

Reservado el de

HIPLUS AIRE ACONDICIONADO S.L.

Masia Torrents, 2 Tel. +34 93 893 49 12 Fax. +34 93 893 96 15 08800 Vilanova i la Geltrú Barcelona, Spain

www.hitecsa.com

derecho a efectuar modificaciones sin previo aviso.

wphz wphbz installation, operation and maintenance …

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