Bedienungsanleitung MundoClima MUCSR-H6 - Model 24 to 60 (Seite 14 von 40) (Englisch)

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3. INSTALL THE REFRIGERANT PIPE

Execute heat insulation work completely on both sides of the

gas piping and liquid piping. Otherwise, this can sometimes

result in water leakage.

(When using a heat pump, the temperature of the gas piping can

reach up to approximately 120 . Use insulation which is

sufficiently resistant.)

Before rigging tubes, check which type of refrigerant is used.

All field piping must be provided by a licensed refrigeration

technician and must comply with the relevant local and

national codes.

Use a pipe cutter and flare suitable for used refrigerant.

Do not mix anything other than the specified refrigerant, such

as air, etc.., Inside the refrigerant circuit.

Coat the flare both inside and ouside with oil or oil .ether ester

If the refrigerant gas leaks during the work, ventilate the area.

A toxic gas is emitted by the refrigerant gas being exposed to

a fire.

Make sure there is no refrigerant gas leak. A toxic gas may be

released by the refrigerant gas leaking indoor and being

exposed to flames from an area heater, cooking stove, etc.

Also, in cases where the temperature and humidity of the

refrigerant piping sections might exceed 30 or Rh80%,

reinforce the refrigerant insulation(20mm or thicker).

Condensation may form on the surface of the insulating material.

Only use annealed material for flare conncetions.

Coat here with ether oil or ester oil

Precautions

3.1 Flaring the pipe end

1) Cut the pipe end with a pipe cutter.

2) Remove burrs with the cut surface facing downward so that the

chips do not enter the pipe.

5) Check that the flaring is properly made.

Refer to the table below for the dimensions of flare nuts spaces

and the appropriate tightening torque. (Overtightening may

damage the flare and cause leaks.)

Pipe gauge

(mm)

Outer diam.

(mm)

Tightening torque

A(mm)

Max.

1.3

1.6

1.8

2.2

Min.

0.7

1.0

2.0

Flare dimension

A(mm) Flare shape

O6.35

15~16 N. m

(153~163 kgf.cm) 8.3~8.7

12.0~12.4

15.4~15.8

18.6~19.0

22.9~23.3

25~26 N. m

(255~265 kgf.cm)

35~36 N. m

(357~367 kgf.cm)

45~47 N. m

(459~480 kgf.cm)

97.2~118.6 N. m

(990~1210 kgf.cm)

O9.52

O12.7

O15.9

O19.1

O15.9

R0.4~0.8

45 2

90 4

1 Torque wrench

2 Flare nut

3 Piping union

4 Spanner

Align the centres of both flares and tighten the flare nuts 3 or 4

turns by hand. Then tighten them fully with the torque wrenches.

3.2 Refrigerant piping

Check whether the height drop between the indoor unit and

outdoor unit, and the length of refrigerant pipe meet the following

requirements:

Cut exactly at

right angles. Remove burrs.

Flare s inner surface

must be flaw-free

The pipe end must

be evenly flared in a

perfect circle.

Make sure that the

flare nut is fitted.

3) Put the flare nut on the pipe.

4) Flare the pipe.

Die

Copper pipe

Set exactly at the position shown below.

INSTALLATION MANUAL

Model Max.allowable

piping length

25m

50m

Max.allowable

piping height

10m

25m

30m

65m

20m

30m

MUCSR-12-H6

MUCSR-18-H6

MUCSR-24/30-H6

MUCSR-36/42/48-H6

MUCSR-48/60-H6T

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