Daikin FXZQ05TAVJU, Installation Manual

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4 English
3 Adjust the unit to the right position for installation.
(See “Preparations before installation” on page 3.)
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 fl oat switch. (If the unit is tilted against the
direction of the condensate fl ow (the drain piping side is raised),
the fl oat 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-fi lled vinyl tube as shown in fi gure 11.
1 Water level
2 Vinyl tube
5 Remove the paper pattern for installation. (For new ceilings only.)
Refrigerant piping work
For refrigerant piping of outdoor unit, refer to the installation manual
supplied with the outdoor unit.
Execute thermal insulation work completely on both sides of the gas
piping and liquid piping. Otherwise, this can sometimes result in water
leakage.
Before rigging pipes, check which type of refrigerant is used.
Installation shall be done by a licensed refrigeration
technician, the choice of materials and installation shall
comply with the applicable national and international codes.
„
Use a pipe cutter and fl are suitable for R410A refrigerant.
„
To prevent dust, moisture or other foreign matter from infi ltrating the
tube, either pinch the end, or cover it with tape.
„
The outdoor unit is charged with refrigerant.
„
To prevent water leakage, execute thermal insulation work
completely on both sides of the gas and liquid piping. When using a
heat pump, the temperature of the gas piping can reach up to
approximately 250°F (120°C), use insulation which is suffi ciently
heat resistant.
„
Be sure to use both a spanner and torque wrench together when
connecting or disconnecting pipes to/from the unit.
1 2
4
3
1 Torque wrench
2
Spanner
3 Piping union
4
Flare nut
„
Do not mix anything other than the specifi ed refrigerant, such as air,
etc. inside the refrigerant circuit.
„
Only use annealed material for fl are connections.
„
Refer to Table 1 for the dimensions of fl are nut spaces and the
appropriate tightening torque. (Overtightening may damage the
fl are and cause leaks.)
Table 1
Pipe size Tightening torque
Flare dimensions
A (in.)
Flare
φ
1/4”
10.4-12.7 ft·lbf 0.342-0.358
R0.016 -
0.031
φ
1/2”
36.5-44.5 ft·lbf 0.638-0.654
• Refer to Table 1 to determine the proper tightening torque.
„
When connecting the fl are nut, coat the fl are inner surface with
ether oil or ester oil and initially tighten 3 or 4 turns by hand before
tightening fi rmly.
„
If the refrigerant gas leaks during the work, ventilate the area. A
toxic gas is emitted by the refrigerant gas being exposed to a fi re.
„
Make sure there is no refrigerant gas leak. A toxic gas may be
released by the refrigerant gas leaking indoor and being exposed to
fl ames from an area heater, cooking stove, etc.
„
Finally, insulate as shown in the fi gure below (use the supplied
accessory parts).
4 5 5 1 2 3 1
Liquid pipe
2 Gas pipe
3
Insulation for fi tting for liquid
pipe
4 Insulation for fi tting for gas
pipe
5
Clamps
(use 2 clamps per insulation)
Piping insulation procedure
Gas piping Liquid piping
A B
D
C
7
1 2 3 4 5 6 6
A B C
1 2 3 4 5 6 6
D 7
1 Piping insulation material (fi eld supply)
2 Flare nut connection
3 Insulation for fi tting (delivered with the unit)
4 Piping insulation material (main unit)
5
Main unit
6 Clamp (fi eld supply)
7 Medium 1 sealing pad for gas piping (delivered with the unit)
Medium 2 sealing pad for liquid piping (delivered with the unit)
A Turn seams up
B Attach to base
C
Tighten the part other than the piping insulation material
D Wrap over from the base of the unit to the top of the fl are nut
connection
„
For local insulation, be sure to insulate local piping all the
way into the pipe connections inside the unit.
Exposed piping may cause condensation or may cause
burns when touched.
„
Make sure that no oil remains on plastic parts of the
decoration panel (optional equipment).
Oil may cause degradation and damage to plastic parts.
01_EN_3P493125-1.indd 4 9/21/2017 10:16:29