Bedienungsanleitung Midea MFA-18HRDN1 (Seite 8 von 24) (Englisch)

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installation manual

7. INSTALL THE CONNECTING PIPE

Check whether the height drop between the indoor unit and

outdoor unit, the length of refrigerant pipe, and the number of

the bends meet the following requirements:

The max height drop 10m

The length of refrigerant pipe Less than 30m

The number of bends Less than 10

CAUTION

All field piping must be provided by a licensed

refrigeration technician and must comply with the

relevant local and national codes.

Do not let air, dust, or other impurities fall in the pipe

system during the time of installation.

The connecting pipe should not be installed until the

indoor and outdoor units have been fixed already.

Keep the connecting pipe dry, and do not let moisture in

during installation.

Execute heat insulation work completely on both sides

of the gas piping and the liquid piping. Otherwise, this

can sometimes result in water leakage.

The Procedure of Connecting Pipes7.1

Table 7-1

6.2 Moving and installation

Fix with bolt

Fig.6-5

NOTE

All the pictures in this manual are for explanation purpose only.

They may be slightly different from the air conditioner you

purchased(depend on model).The actual shape shall prevail.

Since the gravity center of the unit is not at its physical

center, so please be careful when lifting it with a sling.

Never hold the inlet of the outdoor unit to prevent it from

deforming.

Do not touch the fan with hands or other objects.

Do not lean it more than 45, and do not lay it sidelong.

Make concrete foundation accoding to the sepecif-ications of

the outdoor units.(refer to Fig.6-5)

Fasten the feet of this unit with bolts firmly to prevent it from

collapsing in case of earthquake or strong wind.(refer to

Fig.6-5)

Drill a hole in the wall (suitable just for the size of the wall

conduit), then set on the fittings such as the wall conduit and

its cover.

Bind the connecting pipe and the cables together tightly with

binding tapes.

Pass the bound connecting pipe through the wall conduct

from outside. Be careful of the pipe allocation to do on

damage to the tubing.

Connect the pipes. Refer to "How to Connect the pipes" for

details.

Expel the air with a vacuum pump. Refer to "How to expel the

air with a vacuum pump" for details.

open the stop values of the outdoor unit to make the

refrigerant pipe connecting the indoor unit with the outdoor

unit in fluent flow.

Check the leakage. Check all the joints with the leak detector

or soap water.

Cover the joints of the connecting pipe with the soundproof /

insulating sheath (fittings), and bind it well with the tapes to

prevent leakage.

Be sure to with insulating materials cover all the exposed

parts of the flare pipe joints and refrigerant pipe on the

liquid-side and the gas-side. Ensure that there is no gap

between them.

Incomplete insulation may cause water condensation.

CAUTION

Fig.7-1

Open the frant panel

Slide the two stoppers on the left and right sides inword

until they click .(refer to Fig.7-1)

How to take indoor unit apart to connect

the pipes

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