Installing Heat Insulation; Installing Drain Pipes - Fujitsu AIRSTAGE ARUM24TLAV Installation Manual

Torque wrench
Indoor unit pipe
(Body side)
Flare nut [in. (mm)]
1/4 (6.35) dia.
3/8 (9.52) dia.
1/2 (12.70) dia.
5/8 (15.88) dia.
3/4 (19.05) dia.

4.4. Installing heat insulation

• Insulate by the coupler heat insulation (Accessories) around the gas pipe and liquid pipe
of indoor side.
• After installing the coupler heat insulation, wrap both end with vinyl tape so that there is
no gap.
• After affi xing the coupler heat insulation, secure it with 2 cable ties (large), one on each
end of the insulation.
• Make sure that the cable ties overlap the heat insulation pipe.
Coupler heat
insulation
(Accessories)
Cable tie (Large)
(Accessories)
After checking for gas leaks (refer to the Installation Manual of the outdoor unit),
perform this section.
Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do
so may cause water leaks.

5. INSTALLING DRAIN PIPES

Use general hard polyvinyl chloride pipe and connect it with adhesive (polyvinyl chloride)
]
so that there is no leakage.
Always heat insulate the indoor side of the drain hose.
Use a drain hose that matches the size of the drain pipe.
• Do not perform a rise, trap and air bleeding.
• Provide a downward gradient (1/100 or more).
• Provide supporters when long pipes are installed.
• Use an insulation material as needed, to prevent the pipes from freezing.
• Install the pipes in a way that allows for the removal of the control box.
(Right side)
9-7/16 (240)
Liquid pipe
Gas pipe
Drain port
En-7
Tighten with 2 wrenches.
Holding wrench
Flare nut
Connection pipe
Tightening torque [lbf·ft. (N·m)]
11.8 to 13.3 (16 to 18)
23.6 to 31.0 (32 to 42)
36.1 to 45.0 (49 to 61)
46.5 to 55.3 (63 to 75)
66.4 to 81.1 (90 to 110)
Cover this portion with
heat insulation.
Heat insulation
CAUTION
Unit: in. (mm)
(Left side)
9-7/16 (240)
Drain port
The drain cap is attached at the
factory setting.
Drain pipe
• When the unit is shipped from the factory, the drain port is on the right side (control box
side).
• When using the drain port on the left side of the unit, reinstall the drain cap to the right
side drain port.
Drain port
Drain cap
• Cover the drain cap with the drain hose insulation.
Drain hose insulation (Accessories)
Unit
Drain cap
INSTALL THE DRAIN HOSE
Working procedure
1) Install the attached drain hose to the drain port of the body. Install the hose band from
the top of the hose within the graphic display area. Secure fi rmly with the hose band.
2) Use vinyl adhesive agent to glue the drain piping (PVC pipe) [Φ 3/4 in. (19 mm) I.D. Φ 1-1/16 in.
(27 mm) O.D.] which is prepared on site or socket. (Apply color adhesive agent evenly until the
gauge line and seal)
3) Check the drainage.
4) Install the heat insulation.
5) Use the attached heat insulation to insulate the drain port and band parts of the body.
Drain pan
3/8 to 9/16
(10 to 15)
Applying
area of
adhesive
Hard PVC side
Drain pipe (Field supply)
Φ 3/4 in. (19 mm) [I.D.], Φ 1-1/16 in. (27 mm) [O.D.]
0.16 (4) or less
Unit: in. (mm)
Pipe size
Φ 3/4 in. (19 mm) [I.D.],
Φ 1-1/16 in. (27 mm) [O.D.]
Cable tie (Large)
(Accessories)
Drain hose insulation
(Accessories)
Unit
0 in. (0 mm)
Ensure there is no space
Hose Band
(Accessories)
Soft PVC side
Drain hose
(Accessories)
Joint pipe
(Field supply)
Unit: in. (mm)