Installation and Operation
EDUS39-800-F9
26
FXZQ-M
NOTE
All the above parts are field supplied.
For other installation than standard installation, contact your
Daikin dealer for details.
6.
INDOOR UNIT INSTALLATION
When installing optional accessories, read also the installa-
tion manual of the optional accessories. Depending on the
field conditions, it may be easier to install optional accessories
before the indoor unit is installed (except for the decoration
panel). However, for existing ceilings, install fresh air inlet
component kit and branch duct before installing the unit.
(1) Install the indoor unit temporarily.
• Attach the hanger bracket to the suspension bolt. Be sure
to fix it securely by using a nut and washer from the upper
and lower sides of the hanger bracket.
Securing the hanger bracket see figure 5.
1 Nut (field supply)
2 Hanger bracket
3 Washer (supplied with the unit)
4 Tighten with double nuts (field supply)
(2) Fix the paper pattern for installation. (For new ceil-
ings only.)
• The paper pattern for installation corresponds with the
measurements of the ceiling opening. Consult the builder
for details.
• The centre of the ceiling opening is indicated on the
paper pattern for installation. The centre of the unit is indi-
cated on the paper pattern for installation.
• After removing the packaging material from the paper
pattern for installation, attach the paper pattern for instal-
lation to the unit with the supplied screws as shown in fig-
ure 8.
1 Paper pattern for installation (supplied with the unit)
2 Screws (supplied with the unit)
(3) Adjust the unit to the right position for installation.
(Refer to the chapter "Preparations before installation" on
page 5.)
(4) Check if the unit is horizontally levelled.
• Do not install the unit tilted. The indoor unit is equipped
with a built-in drain pump and float switch.
(If the unit is tilted against condensate flow, the float
switch may malfunction and cause water to drip.)
• Check if the unit is levelled at all four corners with a water
level or a water-filled vinyl tube as shown in figure 9.
1 Water level
2 Vinyl tube
(5) Remove the paper pattern for installation. (For new
ceilings only.)
7.
REFRIGERANT PIPING WORK
NOTE
All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and
national codes.
For refrigerant piping of outdoor unit, refer to the installation
manual supplied with the outdoor unit.
Execute heat insulation work completely on both sides of
the gas piping and the liquid piping. Otherwise, this can
sometimes result in water leakage.
(When using a heat pump, the temperature of the gas pip-
ing can reach up to approximately 250°F. Use insulation
which is sufficiently resistant.)
Also, in cases where the temperature and humidity of the
refrigerant piping sections might exceed 86°F or RH 80%,
reinforce the refrigerant insulation (0.8 in or thicker).
Condensation may form on the surface of the insulating
material.
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 infil-
trating the tube, either pinch the end, or cover it with tape.
Use copper alloy seamless pipes (ISO 1337).
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.
1
Torque wrench
2
Spanner
3
Piping union
4
Flare nut
Do not mix anything other than the
specified refrigerant, such as air, etc.,
inside the refrigerant circuit.
Refer to the table below for the dimensions of flare nuts and
the appropriate tightening torque. (Overtightening may
damage the flare and cause leaks.)
CAUTION
to be taken when brazing refrigerant piping
Do nut use flux when brazing refrigerant piping. Therefore,
use the phosphor copper brazing filter metal (BCuP) which
does not require flux.
Flux has an extremely negative effect on refrigerant piping
systems. For instance, if chlorine based flux is used, it will
cause pipe corrosion. If the flux contains fluorine, it will dam-
age the refrigerant oil.
Pipe
gauge
(in)
Tightening torque
(ft-lbf)
Flare dimension A
(in)
Flare shape
Ø1/4
10.5~12.7
0.343~0.358
Ø3/8
24.1~29.4
0.504~0.520
Ø1/2
36.5~44.5
0.638~0.654
Ø5/8
45.6~55.6
0.760~0776
1
2
4
3
R0.016~0.031
45
° ±
2
90
°±
2
A
Summary of Contents for FXZQ-M Series
Page 1: ...EDUS 39 800 F9_a AMERICAS FXZQ M 4 Way Ceiling Mounted Cassette Unit 2 2 ...
Page 3: ...External Appearance EDUS39 800 F9_a 2 FXZQ M 1 External Appearance FXZQ07 18M ...
Page 7: ...Dimensions EDUS39 800 F9_a 6 FXZQ M 3TW30724 3 FXZQ07 18M7VJU BYFQ60B8W1 BYFQ60B8W1U ...