Daikin FXHQ32MVE Manual de instalación descargar pdf (Pagina 7)

English 5

6. REFRIGERANT PIPING

〈For refrigerant piping between outdoor unit and this unit,

see the installation manual attached to the outdoor unit.

(Refer to Table 1)〉

〈Execute heat insulation work completely on both sides of

the gas pipe and the liquid pipe. Otherwise, a water leakage

can result sometimes.〉

〈When using a heat pump, the temperature of the gas pipe

can reach up to approximately 120°C, so use insulation

which is sufficiently resistant.〉

〈

Improve the insulation on the refrigerant piping depending

on the installation environment. If the insulation is not suffi-

cient, condensate may form on the surface of the insulation.

〉

〈Before refrigerant piping work, check which type of refrig-

erant is used. Proper operation is not possible if the types

of refrigerant are not the same.〉

CAUTION

• Use a pipe cutter and flare suitable for the type of refrig-

erant.

• Apply ester oil or ether oil around the flare portions

before connecting. (Refer to Fig. 7)

• To prevent dust, moisture or other foreign matter from

infiltrating the tube, either pinch the end or cover it with

tape.

• Do not allow anything other than the designated refrig-

erant to get mixed into the refrigerant circuit, such as air,

etc. If any refrigerant gas leaks while working on the

unit, ventilate the room thoroughly right away.

• The outdoor unit is charged with refrigerant.

• Be sure to use both a spanner and torque wrench together,

as shown in the drawing, when connecting or disconnecting

pipes to/from the unit. (Refer to Fig. 8)

• Refer to Table 2 for the dimensions of flare nut spaces.

• When connecting the flare nut, coat the flare section (both

inside and outside) with ester oil or ether oil, rotate three or

four times first, then screw in. (Refer to Fig. 7)

• Refer to Table 2 for tightening torque.

Table 1

Table 2

NOTE

Use the flare nuts attached with the unit.

CAUTION

Over-tightening may damage the flare and cause a refriger-

ant leakage.

Not recommendable but in case of emergency

You must use a torque wrench but if you are obliged to

install the unit without a torque wrench, you may

follow the installation method mentioned below.

After the work is finished, make sure to check that

there is no gas leak.

When you keep on tightening the flare nut with a spanner,

there is a point where the tightening torque suddenly

increases. From that position, further tighten the flare nut

the angle shown below:

Tabl e 3

• After checking the pipe-connection for gas leakage, be sure

to insulate the liquid and gas pipe, referring to Fig.9, 10 and

the following points.

FXMQ125MFV1

1. Insulate the liquid and gas pipes using the insulation for fit-

ting (Accessory 2), 3))

(Tighten both edges with clamping material.)

2. Make sure the insulation for fitting (Accessory 3)) on the

gas pipe has its seams facing up.

For the gas pipe, wrap the sealing pad (Accessory 4)) around

the insulation for fitting (Accessory 3)) (flare nut part).

Unit to be connected Gas pipe diameter

Liquid pipe

diameter

FXMQ125MFV1

FXMQ125MFV7

φ15.9 φ9.5

FXMQ200MFV1

FXMQ200MFV7

φ19.1 Use attached pipe. φ9.5

FXMQ250MFV1

FXMQ250MFV7

φ22.2 Use attached pipe. φ9.5

Pipe

size

Tightening torque

Flare dimen-

sions

A (mm)

Flare shape

9.5

(3/8”)

32.7 – 39.9N·m 12.8 – 13.2

15.9

(5/8”)

61.8 – 75.4N·m 19.3 – 19.7

R0.4-0.8

Pipe size

Further tightening

angle

Recommended arm length of

tool

φ 9.5 (3/8”) 60 to 90 degrees Approx. 200mm

φ 15.9 (5/8”) 30 to 60 degrees Approx. 300mm

Ester oil or ether oil.

Fig. 7

Torque wrench

Spanner

Piping union

Flare nut

Fig. 8

Insulation

(Attached with main body)

Insulation

for fitting

(Accessory 3))

Sealing pad

(Accessory 4))

Eliminate a gap

Main body

Clamps (Accessory 10))

Flare nut

Insulation (Field supplied)

Eliminate a gap

Insulation for fitting

(Accessory 2))

Insulation

(Attached with

main body)

Clamps

(Accessory 10))

Flare nut

Insulation

(Field supplied)

Gas pipe

Liquid

pipe

Fig. 9

1 2 3 4 5 6 7 8 9 10 11 12 13

Comentarios a estos manuales

Sin comentarios

Daikin FXHQ32MVE Manual de instalación Pagina 7

Comentarios a estos manuales

Relacionado con productos y manuales para Acondicionadores de aire del sistema de división Daikin FXHQ32MVE