Installing Heat Insulation; Installing Drain Pipes; When Drain Pump Is Used; When Drain Pump Is Not Used (Natural Drainage) - Fujitsu Airstage ARXD07GALH Manuel D'installation

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

4.4. Installing heat insulation

Install the heat insulation material after performing a refrigerant leak check (see the In-
stallation Manual for the outdoor unit for details).
4.4.1. COUPLER 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

Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat
exchange erosion may occur)
Insulate the parts properly so that water will not drip from the connection parts.
Check for proper drainage after the construction by using the visible portion of
transparent drain port and the drain piping fi nal outlet on the body.
Do not apply adhesive agent on the drain port of the body.
(Use the attached drain hose and connect the drain piping)
9374342273-01_IM.indb Sec1:8 9374342273-01_IM.indb Sec1:8
Tighten with 2 wrenches.
Holding wrench
Flare nut
Connection pipe
Tightening torque [N·m (kgf·cm)]
16 to 18 (160 to 180)
32 to 42 (320 to 420)
49 to 61 (490 to 610)
63 to 75 (630 to 750)
90 to 110 (900 to 1,100)
Cover this portion with
heat insulation.
Heat insulation
CAUTION
WARNING
CAUTION
5.1A. When drain pump is used
• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32 mm].
• 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.
Locally arranged pipe
Max. 300 mm
Horizontal or
upward gradient
Air bleeding
Observe the following procedures to construct centralized drain pipe fi ttings.
VP30 or more [O.D 38 mm or more]
700 mm or less
5.1B. When drain pump is not used (Natural
drainage)
CAUTION
Set "7.4. Switching of drainage function"
Drain pump cannot be used if it is installed in wall mounted type/floor standing
concealed type.
If the drain pump is not used, please replace with the drain cap.
Ceiling concealed type
• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32 mm].
• 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.
Gap of 1.5 to 2 m
Supporter
VP25 [O.D
32 mm or more]
700 mm or less
Good
Rise
Trap
Prohibited
Downward gradient 1/100 or more
Wall mounted type /
Floor standing concealed type
En-8
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