Daikin FXHQ-M Spezifikationen PDF herunterladen (Seite 19)

Installation EDUS39-900A-F11_a

18 FXMQ-M

(3) Install suspension bolts.

(Use bolts of 3/8in. diameter.)

• Install the equipment where supporting structures are

strong enough to bear the equipment’s weight. Use

embedded inserts or anchor bolts with new buildings

and hole-in-anchors with old buildings.

5. INDOOR UNIT INSTALLATION

Installing optional accessories before installing the

indoor unit is easier.

As for the parts to be used for installation work, be sure to use

the provided accessories and specified parts designated by

our company.

(1) Fix the hanger bracket to the suspension bolt. Tighten

both upper and lower nuts firmly using washers.

(2) Adjust the height of the unit.

(3) Make sure the unit

is level.

• Level the unit

with a level when

installing. If the

unit is not level, it

could become

the source of

water leaks.

• When leveling

the unit, check all

four corners with

a level or a vinyl

tube containing

water. (See the

figure on the

right.)

(4) Tighten the nuts on the top.

(5) Insulate the two hanger brackets on the discharge side

with the insulation material. Insulate the edges so that the

surface and edges of the hanger brackets cannot be

seen.

CAUTION

Setting the unit at an angle opposite to the drain piping

might cause leaks.

6. REFRIGERANT PIPING WORK

For refrigerant piping of outdoor units, see the

installation manual attached to the outdoor unit.

Execute heat insulation work completely on both sides

of the gas piping and the liquid piping. Otherwise, a water

leakage can result.

Be sure to use insulation that is designed for use with

HVAC Systems.



in cases where the temperature and humidity of the

refrigerant piping sections might exceed 86°F or RH80%,

reinforce the refrigerant insulation. (3/4in. or thicker)

Condensation may form on the surface of the insulating

material.



Before refrigerant piping work, check which type of

refrigerant 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

refrigerant.

• Apply ester oil or ether oil inside the flare portions

before connecting.

• 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 disconnect-

ing pipes to/from the unit.

• To prevent flare nut cracking and gas leaks, be sure to use

both a spanner and torque wrench together, as shown in

the drawing below, when connecting or disconnecting

pipes to/from the unit.

• Refer to the Table 1 for the dimensions of flare nut spaces.

• When connecting the flare nut, coat the flare section inside

with ester oil or ether oil, rotate three or four times first,

then screw in.

• Refer to the Table 1 for tightening torque.

• Ventilate if refrigerant gas leaks while performing work.

Ta b l e 1

Anchor

Indoor unit

Long nut or turn-buckle

Installation example

Note) All the above parts are field supplied.

Suspension bolt

Ceiling slab

Part to be procured in the field

Tighten from above and below

(Double nut)

Washer (accessory (7))

Insulation material

(accessory (6))

A-A cross-section

Hanger bracket

setting bolt

Vinyl tube

Hanger bracket setting bolt

Level

B-B cross-section

Pipe

size

Tightening torque

(ft.lbf)

Flare

dimensions

A (in.)

Flare shape (in.)

1/4

”

10.4

12.7 0.342

0.358

3/8”

24.1

29.4 0.504

0.520

1/2”

36.5

44.5 0.638

0.654

5/8”

45.6

55.6 0.760

0.776

R0.016-

0.031

±2

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