Refrigerant Piping Work - Daikin FXLQ-M Series Engineering Data

EDUS391502-F7
Perform the following procedure to mount the re-
mote controller (optional accessory) on the unit if
desired. (FXLQ type only)
Open the left side lid of control panel and mount the
lower case of the remote controller.
See the installation manual at-
tached to the remote control-
ler for instructions on screw
fastening and wiring for the
remote controller.
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 installa-
tion manual attached to the outdoor unit.
Execute heat insulation work completely on both sides of
the gas piping and the liquid piping. Otherwise, conden-
sation may occur causing water damage.
(When using a heat pump, the temperature of the gas piping
Also, in cases where the temperature and humidity of
of the insulating material.
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.
NOTE
ant.
trating the tube, either pinch the end or cover it with tape.
Do not allow anything other than the designated refrigerant
If any refrigerant gas leaks while working on the unit, venti-
late the room thoroughly right away.
The outdoor unit is charged with refrigerant.
Use copper alloy seamless pipes.
both a spanner and torque wrench together, as shown in
the drawing, when connecting or disconnecting pipes to /
from the unit.
face only with ether oil or ester oil.
screw in the nut.
Refer to the Table 2 for tightening torque.
3P086154-3R
FXLQ-M / FXNQ-M
Installation
screw
Lower case
of remote
controller
Lid of control
panel
English
After inspecting pipe joints for gas leakage, be sure to insu-
(Fasten both ends with clamps (6).)
Wrap only the gas line side with the sealing pad (5). Bend
Torque wrench
Spanner
Piping union
Flare nut
(accessory) (3)
Clamp (6)
-
(accessory)
Gas pipe
(Wrapped over union)
Use "Table 3" as a reference if a torque wrench is not available.
Once work is complete, make sure there is no gas leaking. As
denly increase. From that position, tighten the nut to the angle
shown on "Table 3".
-
the pipe-connecting section after checking gas leakage
-
(Fasten both ends with the clamps (6) (accessory).) (Refer
to Fig. 1)
CAUTION
condensate or burns if touched.
-
(accessory) (4)
(For liquid pipe)
Liquid pipe
Fig. 1
-
6
Appendix
3P086154-3R
6