Installing Drain Pipes; Installing Drain Pipes (Ceiling Concealed Type); Installing Drain Pipes (Wall Mounted Type/Floor Standing Concealed Type); Install The Drain Pipe - Fujitsu ARHG12LLTB Installation Manual

5. INSTALLING DRAIN PIPES

5.1A. Installing drain pipes (Ceiling concealed type)
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 pipe that matches the size of the drain hose (Table A).
• Do not perform a rise, trap and air bleeding.
• Provide a downward gradient (1/100 or more).
• Provide supports 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.
Drain pipe
CEILING CONCEALED TYPE (Use Drain Pump)
Drain hose
Outlet air
flow
OK Drain cap NO GOOD
Arrange the drain hose
lower than this port.
OK 1.5 to 2 m
• Install the drain pipe with downward gradient (1/50 to 1/100) and so there are no rises
or traps in the pipe.
• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32 mm] and
connect it with adhesive (polyvinyl chloride) so that there is no leakage.
• When the pipe is long. Install supports.
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain pipe.
Locally arranged pipe
Max.
300 mm
Observe the following procedures to construct centralized drain pipe fittings
VP30 or more [O.D 38 mm or more]
700 mm or less
Table A
O.D.
32 mm(VP25)
NO GOOD Rise
Trap
Supporter
Air bleeding
NO GOOD
Gap of 1.5-2 m
Supporter
VP25
[O.D 32 mm
or more]
700 mm or less
Horizontal or
upward gradient
Air bleeding Rise
Trap
BAD
Downward gradient 1/100 or more
• 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 final 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)
5.1B. Installing drain pipes (Wall mounted type/Floor
standing concealed type)
Drain
cap
OK
• Drain pump cannot be used if it is installed in wall mounted type/floor standing
concealed type.
• Set "7.4.Jumper wire setting of Drainage function setting (JM1)".
• Be sure to connect the pipes for drainage without leakage.
• To avoid condensation and dripping, always insulate the indoor drain pipe.

5.2. Install the drain pipe

(1) B e sure to use supplied Drain hose 1 and Hose band 2
Drain
hole
• When drain pump is used. (Ceiling concealed type only)
20 mm
• When drain pump is not used. (Natural drainage)
.
• When drain pump is not used, do not connect the accessory drain hose and soft PVC
.
hose directly
WARNING
CAUTION
Trap
NO GOOD NO GOOD
CAUTION
2 Hose band
1 Drain hose
Hard PVC side
Hose band
4 mm or less
Applying
area of Joint pipe
adhesive (Field supply)
Drain pipe (VP25)
(Field supply)
4 mm or less
CAUTION
Rise
En-8