Table of Contents
Advertisement
5. INSTALLING DRAIN PIPES
Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat ex-
change 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 transpar-
ent 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)
• 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.
5.1. When drain pump is used
GOOD
Drain hose (accessories)
PROHIBITED
Observe the following procedures to construct centralized drain pipe fi ttings.
[O.D.1-5/16 in (33 mm)] or more
Downward gradient 1/100 or more
27 in (700 mm)
or less
5.2. When drain pump is not used (Natural drainage)
Set "7.5. Switching of drainage function". Otherwise it will cause water leakage.
Move the position of the drain cap.
GOOD
Downward gradient
1/8 to 3/16 in (2.5 to 5.0 mm)
3-15/16 in (100 mm)
or more
Locally arranged pipe
En-7
WARNING
CAUTION
Gap of 60 to 78 in (1.5 to 2 m)
Locally arranged pipe
Supporter
[O.D.1-1/16 in
(27 mm) or more ]
27 in (700 mm)
or less
Horizontal or
upward gradient
Air bleeding
Rise
Trap
Drain hose is not used
CAUTION
Gap of 60 to 78 in (1.5 to 2 m)
Supporter
Drain hose
(accessories)
[O.D.1-1/16 in
(27 mm) or more ]
PROHIBITED
Observe the following procedures to construct centralized drain pipe fi ttings.
[O.D.1-5/16 in (33 mm)] or more
Downward gradient 1/100 or more
5.3. Installing the drain pipe
Be sure to fi x the drain hose to the drain port with the hose band. Do not apply glue to
the drain port. Otherwise it will cause water leakage.
(1) Be sure to use supplied Drain hose 1 and Hose band 2
2 Hose band (accessories)
1 Drain hose (accessories)
Drain port
Hose band
3/16 in (4 mm) or less
13/16 in (20 mm)
(2) Be sure to connect Drain pipe with adhesive
(polyvinyl chloride) so that there is no leakage.
Do not connect to the Drain hole with adhesive. Using adhesive may cause damage
and water leaks.
(3) After installing the Drain hose 1 , check if the drainage is smooth.
To prevent excessive force on Drain hose 1 , avoid bends or twists. (To bend or twist
may cause water leaks.)
(4) After checking for drainage, attach the
Drain hose insulation B 3 to insulate,
following the instructions as in the fi gures.
To avoid space with Drain hose 1 and
Hose band 2 , press fi rmly the Drain hose
insulation B 3 .
Ensure there is no space.
• STEP1 - STEP3
Butt the insulation against the unit.
Air
bleeding
Trap
Rise
Drain hose is not used
CAUTION
Hard PVC side
1 Drain hose
2 Hose band
Fasten the Hose band 2 at
the position where horizontal
against earth (ground).
The Hose band 2 must be
positioned at the right side of
the Drain hose 1 as in the
fi gure.
Applying
area of
Joint pipe
adhesive
(Locally purchased)
Drain pipe [3/4 in (19 mm)
O.D.1-1/16 in (27 mm)]
(locally purchased)
3/16 in (4 mm) or less
CAUTION
CAUTION
3 Drain hose
insulation B
(Accessories)
Unit
Slit
STEP 1
Advertisement
Table of Contents
