Mitsubishi FDTC25VD Spezifikationen PDF herunterladen (Seite 103)

102

'10 • SR-T-091

Wires for connecting indoor

and outdoor units

Exterior tape

Gas piping

Insulation

Liquid piping

Band (accessory)

Pipe cover (accessory)

8) Heating and condensation prevention

(1) Dress refrigerant pipes (both gas and liquid pipes) for heat insulation and prevention of dew condensation.

• Improper heat insulation/anti-dew dressing can result in a water leak or dripping causing damage to household effects, etc.

(2) Use a heat insulating material that can withstand 120C or a higher temperature. Poor heat insulating capacity can cause heat insulation problems or cable

deterioration.

• All gas pipes must be securely heat insulated in order to prevent damage from dripping water that comes from the condensation formed on them during a cooling

operation or personal injury from burns because their surface can reach quite a high temperature due to discharged gas flowing inside during a heating operation.

• Wrap indoor units’ flare joints with heat insulating parts (pipe cover) for heat insulation (both gas and liquid pipes).

• Give heat insulation to both gas and liquid side pipes. Bundle a heat insulating material and a pipe tightly together so that no gaps may be left between them and

wrap them together with a connecting cable by a dressing tape.

• Both gas and liquid pipes need to be dressed with 20mm or thicker heat insulation materials above the ceiling where relative humidity exceeds 70%.

Clearance

3. DRAIN PIPING WORK

 

• Execute drain piping by using a drain elbow and drain

grommets supplied separately as optional parts, where

water drained from the outdoor unit is a problem.

• Water may drip where there is a larger amount of drain

water. Seal around the drain elbow and drain

grommets with putty or adequate caulking material.

• Condensed water may flow out from vicinity of

operation valve or connected pipes.

• Where you are likely to have several days of sub-zero

temperatures in a row, do not use a drain elbow and

drain grommets. (There is a risk of drain water freezing

inside and blocking the drain.)

• When condensed water needs to be led to a drain, etc., install

the unit on a flat base (supplied separately as an optional part)

or concrete blocks.

Then, please secure space for the drain elbow and the drain

hose.

Drain elbow

Grommet

Drain hose

(To be procured on the installer’s part)

Do not put a grommet on

this hole.

This is a supplementary

drain hole to discharge

drain water, when a large

quantity of it is gathered.

Model 20, 25, 35

Drain elbow

Grommet

Drain hose

(To be procured on the installer’s part)

Model 50

4. ELECTRICAL WIRING WORK For details of electrical cabling, refer to the indoor unit installation manual.

In case of faulty wiring connection, the indoor unit stops,

and then the run lamp turns on and the timer lamp blinks.

Use cables for interconnection wiring to avoid loosening of the wires.

CENELEC code for cables Required field cables.

4or5

1.5

Harmonized cable type

300/500 volts

Natural-and/or synth. rubber wire insulation

Polychloroprene rubber conductors insulation

Stranded core

Number of conductors

One conductor of the cable is the earth conductor

(yellow/green)

Section of copper wire (mm

)

H05RNR4G1.5 (Example) or 245IEC57

Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country.

Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical installations in the country.

• Do not use any supply cord lighter than one specified in parentheses for each type below.

• braided cord (code designation 60245 IEC 51)

• ordinary tough rubber sheathed cord (code designation 60245 IEC 53)

• flat twin tinsel cord (code designation 60227 IEC 41)

Use polychloroprene sheathed flexible cord (code designation 60245 IEC57) for supply cords of parts of appliances for outdoor use.

• Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.

If improperly grounded, an electric shock or malfunction may result.

• A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power cable.

• The installation of an impulse withstanding type earth leakage breaker is necessary. A failure to install an earth leakage breaker can result in an accident

such as an electric shock or a fire.

• Do not turn on the power until the electrical work is completed.

• Do not use a condensive capacitor for power factor improvement under any circumstances. (It dose not improve power factor, while it can cause an

abnormal overheat accident)

• For power supply cables, use conduits.

• Do not lay electronic control cables (remote control and signaling wires) and other cables together outside the unit. Laying them together can result in

the malfunctioning or a failure of the unit due to electric noises.

• Fasten cables so that may not touch the piping, etc.

• When cables are connected, make sure that all electrical components within the electrical component box are free of loose connector coupling or

terminal connection and then attach the cover securely. (Improper cover attachment can result in malfunctioning or a failure of the unit, if water

penetrates into the box.)

• Always use a three-core cable for an indoor-outdoor connecting cable. Never use a shield cable.

CAUTION

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