Installing Drain Pipes; When Drain Pump Is Used; When Drain Pump Is Not Used (Natural Drainage) - Fujitsu AR 7 Installation Manual

8. 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)
8.1A. When drain pump is used
• Use general hard polyvinyl chloride pipe ø 3/4 in. (19 mm)
[I.D.], ø 1-1/16 in. (27 mm) [O.D.].
• 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. 11-13/16 in.
(300 mm)
Observe the following procedures to construct centralized
drain pipe fi ttings.
[O.D.1-5/16 in. (33 mm)] or more
27-9/16 in.
(700 mm) or less
En-14
WARNING
CAUTION
Gap of 5 to 6ft (1.5 to 2 m)
Supporter
[O.D.1-1/16 in.
(27 mm)] or more
27-9/16 in. (700
mm) or less
Horizontal or
upward gradient
GOOD
Air bleeding
Trap
PROHIBITED
Downward gradient 1/100 or more
8.1B. When drain pump is not used (Natural
Set "Drainage function setting (JM1)" in "10.4. Jumper wire set-
ting."
Drain pump cannot be used if it is installed in wall mounted type/
fl oor 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 ø 3/4 in. (19 mm)
[I.D.], ø 1-1/16 in.(27 mm) [O.D.] .
• 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.
(1) Ceiling concealed type
3-15/16 in. (100 mm) or more
Rise
Observe the following procedures to construct centralized
drain pipe fi ttings.
drainage)
CAUTION
Wall mounted type /
Floor standing concealed type
Downward gradient
0.10-0.19 in.
(2.5-5.0 mm)
Locally arranged pipe
Air bleeding
PROHIBITED
[O.D.1-5/16 in.
Downward gradient
(33 mm)] or more
1/100 or more
Gap of 5 to 6ft (1.5 to 2 m)
Supporter
[O.D.1-1/16 in.
(27 mm)] or more
GOOD
Trap
Rise