Mitsumi electronic PQHY-P7296TGMU-A installation manual Contents, Safety precautions

Page 6

Contents

1.

Safety precautions

6

 

1.1. Before installation and electric work

6

 

1.2. Precautions for devices that use R410A refrigerant

6

 

1.3.

Before getting installed

7

 

1.4. Before installation electrical work

7

 

1.5. Before starting the test run

7

2.

About the product

7

3.

Specifications

7

4.

Confirmation of parts attached

8

5.

Lifting method

8

6.

Installation of unit and service space

8

 

6.1.

Installation

8

 

6.2.

Service space

8

7.

Water pipe installation

8

 

7.1.

Precautions during installation

8

 

7.2.

Insulation installation

8

 

7.3. Water processing and water quality control

8

 

7.4.

Pump interlock

9

8.

Refrigerant piping installation

9

 

8.1.

Caution

9

 

8.2.

Refrigerant piping system

9

9.

Additional refrigerant charge

10

 

9.1.

Calculation of additional refrigerant charge

10

 

9.2.

Precautions concerning piping connection and

 

 

 

valve operation

10

 

9.3.

Airtight test, evacuation, and refrigerant charging

11

 

9.4.

Thermal insulation of refrigerant piping

11

10. Wiring

12

 

10.1.

Caution

12

 

10.2.

Control box and connecting position of wiring

12

 

10.3.

Wiring transmission cables

12

 

10.4.

Wiring of main power supply and equipment capacity

14

11. Test run

14

 

11.1.

The following phenomena do not represent trouble

 

 

 

(emergency)

14

12.Information on rating plate

14

1. Safety precautions

GB

1.1. Before installation and electric work

sBefore installing the unit, make sure you read all the “Safety precautions”.

sThe “Safety precautions” provide very important points re- garding safety. Make sure you follow them.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.

: Indicates that important instructions must be followed.

: Indicates a part which must be grounded.

: Beware of electric shock. (This symbol is displayed on the main unit label.) <Color: yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

Ask the dealer or an authorized technician to install the air conditioner.

-Improper installation by the user may result in water leakage, electric shock, or fire.

Install the unit in a place that can withstand its weight.

-Inadequate strength may cause the unit to fall down, resulting in injuries.

Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.

-Inadequate connection and fastening may generate heat and cause a fire.

Prepare for rain and other moisture and earthquakes and install the unit at the specified place.

-Improper installation may cause the unit to topple over and result in injury.

Always use an filter and other accessories specified by Mitsubishi Elec- tric.

-Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire.

Never repair the unit. If the air conditioner must be repaired, consult the dealer.

-If the unit is repaired improperly, water leakage, electric shock, or fire may result.

If refrigerant gas leaks during installation work, ventilate the room.

-If the refrigerant gas comes into contact with a flame, poisonous gases will be released.

Install the air conditioner according to this Installation Manual.

-If the unit is installed improperly, water leakage, electric shock, or fire may result.

Have all electric work done by a licensed electrician according to “Elec- tric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is performed im- properly, electric shock and fire may result.

Securely install the heat source unit terminal cover (panel).

-If the terminal cover (panel) is not installed properly, dust or water may enter the heat source unit and fire or electric shock may result.

When installing and moving the air conditioner to another site, do not charge it with a refrigerant different from the refrigerant (R410A) speci- fied on the unit.

-If a different refrigerant or air is mixed with the original refrigerant, the refrig- erant cycle may malfunction and the unit may be damaged.

If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.

-Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.

-If the air conditioner is installed improperly, water leakage, electric shock, or fire may result.

After completing installation work, make sure that refrigerant gas is not leaking.

-If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat source, it may generate noxious gases.

Do not reconstruct or change the settings of the protection devices.

-If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Mitsubishi Elec- tric are used, fire or explosion may result.

To dispose of this product, consult your dealer.

The installer and system specialist shall secure safety against leakage according to local regulation or standards.

-Following standards may be applicable if local regulation are not available.

Pay a special attention to the place, such as a basement, etc. where re- frigeration gas can stay, since refrigeration is heavier than the air.

1.2.Precautions for devices that use R410A refrigerant

Caution:

Do not use the existing refrigerant piping.

-The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

-R410A is a high-pressure refrigerant and can cause the existing piping to burst.

Use refrigerant piping made of phosphorus deoxidized copper and cop- per alloy seamless pipes and tubes. In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contami- nant.

-Contaminants on the inside of the refrigerant piping may cause the refriger- ant residual oil to deteriorate.

Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)

-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.

-The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.

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Contents PQHY-P72·96TGMU-A = 8 m 26 ft Side piping Top pipingP96 Unit mmHeat source model Liquid pipe Gas pipe P72 Ø9.52 3/8 Ø22.2 7/810.2 E J10.3 10.4~208-230 Contents Safety precautionsBefore installation electrical work SpecificationsBefore getting installed About the productConfirmation of parts attached Installation of unit and service spaceWater pipe installation Lifting methodRefrigerant piping installation Pump interlockRefrigerant piping system Additional refrigerant charge Calculation of additional refrigerant chargeAirtight test Airtight test, evacuation, and refrigerant chargingThermal insulation of refrigerant piping Only use refrigerant R410AWiring Control box and connecting position of wiringWiring transmission cables Sequence with the IC Main Examples of transmission cable wiringUnnecessary address setting Necessary main/sub setting Transmission boosterInformation on rating plate Wiring of main power supply and equipment capacityTest run Following phenomena do not represent trouble emergencyTable des matières Consignes de sécuritéAvant de procéder à l’installation Avant de procéder à l’installation élec- triqueAvant d’effectuer l’essai Le produit Installation de l’appareil et espace de serviceInstallation du tuyau d’eau Association aux appareils intérieursTraitement de l’eau et contrôle de la qualité de l’eau Installation des tuyaux de réfrigérantMise en place de l’isolation Engrenage des pompesSystème de mise en place des tuyaux de réfrigérant Charge supplémentaire de réfrigérantPrécaution Calcul de la charge supplémentaire de réfrigérantNe pas utiliser de liquide de détection de fuite Force de torsion appropriée avec clé dynamométriqueForce de torsion N·m/kg·cm Test d’étanchéité à l’airEcoulement Isolation thermique des tuyaux de ré- frigérantUtiliser uniquement le réfrigérant R410A Ajout du réfrigérant10. Câblage 10.1. PrécautionMise en place des câbles de transmis- sion Auxiliaire de transmission Schéma du câblage exempleInformations sur la plaque signalétique Essai de fonctionnementPage Page Page WT04681X01