Installing Drain Pipes - Fujitsu AU7 Installation Manual

Special nut B
Hanger bolt
3/4 (19)
4.3.3. Leveling
Using a level gauge, or vinyl hose fi lled with water, fi ne adjust
so that the body is level.
Inclined installation so as the drain pipe side is higher may
cause a malfunction of the fl oat switch, and may cause water
leakage.
Vinyl hoses

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 installation 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 assembly to con-
nect the drain piping)
Note: Install the drain pipe.

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 [3/4 in. (O.D.
1-1/16 in)] and connect it with adhesive (polyvinyl chlo-
ride) so that there is no leakage.

When the pipe is long, install supporter.

Do not perform air bleeding.

Always heat insulate indoor section of drain pipe.

If it is impossible to have suffi cient gradient of pipe, per-
form drain lift-up.
Drain pipe
En-7
Special nut A Unit: in. (mm)
After installing the
Hook
body, tighten the nuts.
1-3/16 (30)
or more
Ceiling
WARNING
CAUTION
Pipe size
3/4 in. (O.D. 1-1/16 in.)
3/4 in.
Downward gradient 1/100 to 1/50
PROHIBITED:
Rise
When lifting up drain:
• Height of inclined pipe should be less than 27-9/16 in. (700 mm)
from the ceiling. A rise dimension over this range will cause leakage.
• Lift up the pipe vertically at the position of 11-13/16 in. (300 mm)
or less from the unit.
Drain pipe
3/4 in.
local arrangement
27-9/16 in.
(700 mm) or less
Installation 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
shown in the fi gure area.
2) Use PVC glue to glue the drain piping (PVC pipe [3/4 in.
(O.D. 1-1/16 in.)]) to the drain hose assembly.
(Apply color adhesive agent evenly until the gauge line and
seal)
3) Check the drainage. (See separate diagram)
4) Install the heat insulation.
5) Use the attached heat insulation to insulate the drain port
and hose band.
Install the knob facing upward
Hanging fi ttings 59-1/16 to 6 ft 3/4in. (1.5 to 2 m)
Trap
11-13/16 in. (300 mm) or less
Horizontal or
upward gradient
O.D.1-5/16 in. (33 mm) or more
Downward gradient 1/100 to 1/50
Attach hose band
(Accessories)
Attach heat insulation
(Accessories)
Air bleeding
Downward gradi-
ent 1/100 to 1/50
27-9/16 in.
(700 mm) or less
Locally installed
PCV pipe
Attach drain hose
(Accessories)