Mitsubishi Electronics PVFY-P-E00A User Manual

Manufactured For MITSUBISHI

ELECTRIC & ELECTRONICS USA

Air-Conditioners for Building Application INDOOR UNIT

PVFY-P-E00A Concealed Vertical Air handler

For Use with CITY MULTI Outdoor Units Only

INSTALLATION MANUAL

For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner.

Page

1. Inspect Shipment 1

2. Safety Precautions 2

3. Selecting and Installation site 3

4. Installing the unit 3

5. Refrigerant Piping 4

6. Drain Connections 5

7. Electrical Wiring 5

INSPECT SHIPMENT

These air handlers are completely factory assembled, and all components are performance tested. Each unit consists of a blower assembly, refrigerant coil and controls in an insulated, galvanized steel factory enclosure. Knockouts are provided for electrical wiring entrance.

1. Check the unit rating plate to confirm specifications are as ordered.

2. Upon receipt of equipment, carefully inspect it for possible damage. Take special care to examine the unit if the carton is damaged.

If damage is found, it should be noted on the carrier’s freight bill. Damage claims should be filed with the carrier immediately. Claims of shortages should be filed with the seller within 5 days.

Safety Precautions

• Before installation and electric work

Before installing the unit, make sure you read all the “Safety

precautions”.

The “Safety precautions” provide very important points regarding

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

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• The unit must be installed by an authorized Dealer or

properly trained technician.

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

• Install the air 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 typhoons, hurricanes, earthquakes etc. and

install the unit at the specified place.

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

• 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.

• Do no touch the heat exchanger fins.

− Improper handling may result in injury.

• When handling the product, always wear protecti ve

equipment.

− EG: Gloves, full arm protection, and safety glasses.

− Improper handling may result in injury.

• 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 the “National Electrical code and local Electrical codes” 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 improperly, electric shock and fire may result.

• Keep the electric parts away from water (washing water

etc.).

−

It might result in electric shock, catching fire or smoke.

• When cleaning the Heat Exchanger and Drain Pan,

ensure the Control Box, Motor and LEV remain dry, using a water proof covering.

• When installing and moving the air conditioner to

another site, do not charge it with a refrigerant different from the refrigerant specified on the unit.

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

• When moving and reinstalling the air conditioner,

consult the dealer or an authorized technician.

− If the air conditioner is installed improperly, w ater leakage, electric shock, or fire may result.

• Do not reconstruct or change the settings of the

protections devices.

− If the pressure switch, thermal switch, or other protection devices are shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

• To dispose of this product, consult your dealer.

• Do not use a leak detection additive.

Precautions for devices that use R410A refrigerant.

Caution:

• Do not use the existing refrigerant piping.

− The old refrigerant and refrigeration oil in the existing

piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

• Use refrigerant piping made of C1220 (Cu-DHP)

phosphorus deoxidized copper as specified in the JIS H3300 “Copper and copper 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 contaminants.

− Contaminants on the inside of the refrigerant piping may cause the refrigerant 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 liquid refrigerant to fill the system.

− If gas refrigerant is used to seal the system, the

composition of the refrigerant in the cylinder will change and performance may drop.

• Do not use a refrigerant other than R410A.

− If another refrigerant is used, the chlorine in the

refrigerant may cause the refrigerator oil to deteriorate.

• Use a vacuum pump with a reverse flow check valve.

− The vacuum pump oil may flow back into the refrigerant

cycle and cause the refrigerator oil to deteriorate.

• Do not use the following tools that are used with

conventional refrigerants.

− (Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment).

− If the conventional refrigerant and refrigeration oil are mixed in the R410A, the refrigerant may deteriorate.

− If water is mixed in the R410A, the refrigeration oil may deteriorate.

− Since R410A does not contain any chlorine, gas leak detectors for conventional refrigerant will not react t o it.

• Be especially careful when managing the tools.

− If dust, dirt, or water gets in the refrigeration system, the

refrigerant may deteriorate.

Before Getting Started

Caution:

• Do not install the unit where combustible gas may leak.

− If the gas leaks and accumulates around the unit, an

explosion may result.

• Do not use the air conditioner in special environments.

− Oil, steam, sulfuric smoke, etc. can significantly reduce the

performance of the air conditioner or damage its parts

• When installing the unit in a hospital, communication

station, or similar place, provide sufficient protection against noise.

− The inverter equipment, private power generator, high- frequency medical equipment, or radio communication equipment may cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such equipment by creating noise that disturbs medical treatment of image broadcasting.

• Do not install the unit on a structure that may cause

leakage.

− When the room humidity exceeds 80% or when the drain pipe is clogged, condensation may drip from the indoor unit. Perform collective drainage work together with the outdoor unit, as required.

Before getting installed (moved)-electrical work

Caution:

• Ground the unit.

− Do not connect the ground wire to gas or water pipes,

lightning rods, or telephone ground lines. Improper grounding may result in electric shock.

• Install the power cable so that tension is not applied to

the cable.

− Tension may cause the cable to break and generate heat and cause a fire.

• Use power line cables of sufficient current carrying

capacity and rating.

− Cables that are too small may leak, generate heat, and cause a fire.

• Use only a circuit breaker and fuse of the specified

capacity.

− A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a general unit failure or fire.

• Do not wash the air conditioner units.

− Washing them may cause an electric shock.

• Be careful that the installation base is not damaged by

long use.

− If the damage is left uncorrected, the unit may fall and cause personal injury or property damage.

• Install the drain piping according to this Installation

Manual to ensure proper drainage. Wrap thermal insulation around the pipes to prevent condensation.

Improper drain piping may cause water leakage and

−

damage to furniture and other possessions.

• Be very careful about product transportation

− If the product weighs more than 20 kg [44 lb], then more

than one person should carry the product.

− Some products use PP bands for packaging. Do not use any PP bands for a means of transportation; it is dangerous.

− Do not touch the heat exchanger fins. Doing so may cut your fingers.

• Safely dispose of the packing materials.

− Packing materials, such as nails and other metal or wooden

parts, may cause stabs or other injuries.

− Tear apart and throw away plastic packaging bags so that children will not play with them. If children play with a

plastic bag which was not torn apart, they face the risk of suffocation.

Before Starting the test run

Caution:

• Turn on the power at least 12 hours before starting

operation.

− Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.

• Do not touch the switches with wet fingers.

− Touching a switch with wet fingers can cause electric

shock.

• Do not touch the refrigerant pipes during and

immediately after operation.

− During and immediately after operation, the refrigerant pipes may be hot or may be cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes.

• Do not operate the air conditioner with the panels and

guards removed.

− Rotating, hot, or high-voltage parts can cause injuries.

• Do not turn off the power immediately after stopping

operation.

− Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble may occur.

SELECTING AN INSTALLATION SITE

• Avoid locations exposed to outside air.

• Select a location free of obstructions to the airflow in and out

of the unit.

• Avoid locations exposed to steam or vapor

• Avoid locations where combustible gas may leak, settle or be

generated.

• Avoid installation near machines emitting high-frequency waves (high frequency welders, etc.).

• Avoid locations where the airflow is directed at a fire alarm sensor. (Hot air could trigger the alarm during operation)

• Avoid places where acidic solutions are frequently used.

• Avoid places where sulphur-based or other sprays are

commonly used.

• If the unit is run for long hours when the air surrounding the unit is a high temperature/high humidity (dew point above

F, dew condensation may be produced on the unit. When operating the units in this condition, add insulation material (13/32 – 13/16 in) to the entire surface of the unit to avoid condensation.

INSTALLING THE UNIT

The air handler can be installed in a vertical or horizontal (left only) configuration as shown below. The units are designed for “0” zero clearance to combustibles. 24” is required for service access to the front of the unit. (See below) Regardless of mounting configuration, the air handler must be mounted level to facilitate proper condensate drainage.

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