Mitsubishi FDTC25VD Spezifikationen PDF herunterladen (Seite 84)

'10 • SR-T-091

CONNECTION OF REFRIGERANT PIPINGS

[Connection of pipes]

(1) Preparations

(2) Connection

●

Regarding the change in the sizes of gas side pipes (usage of the variable joints); If the 5.0 kw and 6.0 kw class

indoor units (gas side pipe 12.7) is going to be connected to the operation valves (9.52), variable joints available as

accessories must be applied to the gas side operation valves.

NOTE

●

Cover the pipes with tape so that dust and sand do not enter the pipe until they are connected.

●

When connecting the pipes to the outdoor unit, be careful about the discharge of fluorocarbon gas or oil.

●

Make sure to match the pipes between the indoor unit and the outdoor unit with the correct operation valves.

○

Remove the flared nuts.

(on both liquid and gas sides)

○

Install the removed flared nuts to the pipes

to be connected, then flare the pipes.

Indoor

Press

Remove

90 ± 0.5°

Dimension A

Liquid side 9.1(mm)

Gas side

9.52 : 13.2(mm)

12.7 : 16.2(mm)

(Do not turn)

CAUTION

Do not apply refrigerating machine oil to

the flared surface.

○ Connect the pipes on both liquid and gas sides.

○ Tighten the nuts to the following torque.

Liquid side : 14.0 ~ 18.0 N·m (1.4 ~ 1.8 kgf·m)

Gas side (φ9.52) : 33.0 ~ 42.0 N·m (3.3 ~ 4.2 kgf·m)

(φ12.7) : 49.0 ~ 61.0 N·m (4.9 ~ 6.1 kgf·m)

Indoor

Liquid side

Gas side

(Do not turn)

Use a flare tool designed for R410A or a conventional flare tool. Please note that

measurement B (protrusion from the flaring block) will vary depending on the type of a

flare tool in use. If a conventional flare tool is used, please use a copper pipe gauge or a

similar instrument to check protrusion so that you can keep measurement B to a correct

value.

Copper pipe diameter

Clutch type flare tool for

R410A

Conventional

(

R22

)

flare tool

Clutch type Wing nut type

Measurement B

(

)

φ6.35 0.0 ~ 0.5 1.0 ~ 1.5 1.5 ~ 2.0

φ9.52 0.0 ~ 0.5 1.0 ~ 1.5 1.5 ~ 2.0

φ12.7 0.0 ~ 0.5 1.0 ~ 1.5 2.0 ~ 2.5

Measurement B

Flaring

block

Copper pipe

Connecting the Drain Hose

Opposite slope

Traps

Bumps

NOTE

Conduct the installation correctly, and ensure that the water is draining correctly.

It may lead to water leaks.

⑪ Tapping screw

⑤ Drain hose

⑥

Clamp

EARTHING WORK

Apply exterior tape and

shape along the place

where the pipes will be

routed. Secure to the

wall with a pipe clamp.

Be careful not to

damage the pipes and

the wires.

Heat insulation for joints

Finish and fixing

Vinyl tape

Cover the joint with

insulation material

for the indoor unit

and tape it.

Position so

the slit

comes on top.

Pipe clamp

Pipes

Crossover wires

Exterior tape

Drain hose

Tapping screw

HEAT INSULATION FOR JOINTS

○

Earth work shall be carried out without fail in order to

prevent electric shock and noise generation.

○

The connection of the earth cable to the following

substances causes dangerous failures, therefore

it shall never be done. (City water pipe, Town gas pipe,

TV antenna, lightning conductor, telephoneline, etc.)

GAS LEAK DETECTOR

Indoor unit inspection point

Installation test check points

Check the following points again after completion of the installation, and before turning on the power.

Conduct a test run again and ensure that the unit operates properly. At the same time, explain to the

customer how to use the unit and how to take care of the unit following the instruction manual.

If the compressor does not operate after the operation has started, wait for 5-10 minutes. (This may be due

to delayed start.)

(Three-minute restart preventive timer)

When the air conditioner is restarted or when changing the operation, the unit will not start operating for

approximately 3minutes. This is to protect the unit and it is not a malfunction.

The power supply voltage is correct as the rating.

No gas leaks from the joints of the operation valve.

Power cables and crossover wires are securely fixed to

the terminal board.

Each indoor and outdoor unit is properly connected (no

wrong wiring or piping).

Operation valve is fully open.

Refrigerant has been additionally charged (when the total

pipe length exceeds the refrigerant charged pipe length).

The pipe joints for indoor and outdoor pipes have been

insulated.

Earthing work has been conducted properly.

After installation

□

Air conditioning and heating are normal.

No abnormal noise.

Water drains smoothly.

Protective functions are not working.

Operation of the unit has been

explained to the customer.

The wireless remote control is normal.

Test run

□

●

Check that there

are no gas leaks

from the pipe

joints using a

leak detector or

soap water.

TEST RUN AND HANDLING INSTRUCTIONS

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