En-8
5. INSTALLING DRAIN PIPES
• 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 (1-1/4")] and connect it with adhesive
(polyvinyl chloride) so that there is no leakage.
• When the pipe is long, install supporters.
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain pipe.
• When desiring a high drain pipe height, raise it up to 700 mm
or less from the ceiling within a range of 150 mm from the
body. A rise dimension over this range will cause leakage.
• Set up the entire piping lines at the position 100 mm lower
than the main body drain port, and use the piping lines
VP30 or more with the descending inclination to 1/100 or
more.
Attached drain hose
Attached band
Downward gradient
1/100 and adobe
VP25 (Local
arrangement)
700 mm or less
Ho
rizo
nta
l o
r u
pw
ard
g
ra
di
en
t
300 mm or less
NO GOOD over mountain
NO GOOD
trap
ownward gradient1/100 ~ 1/50
Hanging fitting
1.5 ~ 2.0m
VP25
700mm or less
VP30 or more
Downward gradient 1/100 or more
WARNING
• 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.
CAUTION
• Do not apply adhesive agent on the drain port of the body.
(Use the attached drain hose and connect the drain piping)
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 firmly with the hose band.
(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe
VP25) which is prepared on site or elbow socket.
(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 band parts of the body.
Install the bolt faces
upward(Accessories)
Attached
hose band
Attached
heatinsulation
Attached drain
hose(Accessories)
Locally
arrangedviny pipe
(a) Top view
Transparent
visible portion
Insertion margin
10 ~ 15mm
20mm 20mm
±2mm
