Daikin FMDQ50A7V3B, Installation And Operation Manual

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FMDQ50~125A7V3B
Air conditioning system
4PW47630-1 Installation and operation manual
4
R
EFRIGERANT PIPING WORK
For refrigerant piping of outdoor unit, refer to the installation manual
supplied with the outdoor unit.
Before rigging tubes, check which type of refrigerant is used.
■
Use a pipe cutter and flare suitable for the used refrigerant.
■
Apply ether oil or ester oil around 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.
■
The outdoor unit is charged with refrigerant.
■
Be sure to use both a spanner and torque wrench together when
connecting or disconnecting pipes to/from the unit.
■
Refer to Table 1 for the dimensions of flare nut spaces and the
appropriate tightening torque. (Overtightening may damage the
flare and cause leaks.)
Table 1
■
When connecting the flare nut, coat the flare both inside and
outside with ether oil or ester oil and initially tighten by hand 3 or
4 turns before tightening firmly.
Coat here with ether oil or ester oil
■
Check the pipe connector for gas leaks, then insulate it.
D
RAIN PIPING WORK
Rig the drain piping as shown in the figure and take measures
against condensation. Improperly rigged piping could lead to leaks
and eventually wet furniture and belongings.
1 Install the drain pipes.
- Keep piping as short as possible and slope it downwards so
that air may not remain trapped inside the pipe.
- Keep pipe size equal to or greater than that of the connecting
pipe (vinyl pipe of 25 mm nominal diameter and 32 mm outer
diameter).
- Use the supplied drain hose and metal clamp. Tighten the
clamp firmly.
■
Insulate the drain hose inside the building.
■
If the drain hose cannot be sufficiently set on a slope, fit the
hose with drain raising piping (field supply).
HOW TO PERFORM PIPING (See figure 8)
■
Connect the drain hose to the drain raising pipes, and insulate
them.
■
Connect the drain hose to the drain pipe on the indoor unit, and
tighten it with the metal clamp.
- To ensure a downward slope of 1:100, install hanging bars
every 1 to 1.5 m.
- If unifying multiple drain pipes, install the pipes as shown in
figure 9 .
2 After piping work is finished, check if drainage flows smoothly.
- Open the water inlet lid, add approximately 1 l of water
gradually and check the drainage flow.
(See figure 10)
NOTE
All field piping must be provided by a licensed
refrigeration technician and must comply with the
relevant local and national codes.
1 Torque wrench
2 Spanner
3 Piping union
4 Flare nut
Pipe
gauge Tightening torque
Flare dimension
A (mm) Flare shape
Ø6.4 14.2~17.2 N•m
(144~176 kgf•cm)
8.7~9.1
Ø9.5 32.7~39.9 N•m
(333~407 kgf•cm)
12.8~13.2
Ø12.7 49.5~60.3 N•m
(504~616 kgf•cm)
16.2~16.6
Ø15.9 61.8~75.4 N•m
(630~770 kgf•cm)
19.3~19.7
1 Liquid pipe
2 Gas pipe
3 Insulation for fitting of liquid line
(supplied with the unit)
4 Insulation for fitting of gas line
(supplied with the unit)
5 Clamps (use 2 clamps per
insulation)
1 2
4
3
R=0.4~0.8
45
° ±
2
90
°± 2
A
5
3
1
2 4
1 Hanging bar
1 Metal clamp
2 Drain hose
3 White tape (field
supply)
1 Ceiling slab
2 Hanging bar
3 Adjustable range
4 Drain hose (supplied with the unit)
5 Metal clamp (supplied with the unit)
6 Drain raising pipe (field supply)
Installation A
Rear suction installation 275
When canvas duct is installed 350-530
When air inlet panel is directly installed 275
1 Multiple drain piping
1 Water inlet
2 Portable pump
3 Water inlet lid
4 Bucket (adding water from water inlet)
5 Drain outlet for maintenance (with rubber drain plug)
6 Refrigerant pipes
1-1.5 m 1
2 1
3