P5417050-rev.1
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c. Attach the factory-supplied hose clamp to the vinyl tape (white) attached to the condensate hose.
The hose clamp should be 13/16 inch (20mm) away from the end face of the condensate hose.
Then tighten the hose clamp to make sure that it is approximately 1-1/8 inches (28mm) in length
from the screw to the edge of the hose clamp as shown in the figure below.
4. On-Site Condensate Piping Work
a. Connect the factory-supplied condensate hose to the condensate pipe connection using the
polyvinyl chloride adhesive.
b. When cleaning the connection surface, applying the adhesive, inserting, retaining and curing the
condensate pipe, refer to information given by the adhesive manufacturer.
c. Install the support parts at an interval of 3.3 ft to 4.9 ft (1m to 1.5m) in order not to bend the
condensate pipe.
d. Install condensate piping with a downward slope of 1/25 to 1/100 as shown below.
e. Install the condensate hose horizontally or slightly on
an upward slope to prevent air pockets from forming
inside it. If air pockets form, moisture can settle back
into the unit, which could result in undesired sluicing
and bubbling noises and spill over into the room after
unit operation has stopped.
Hose Clamp (Accessory)
Tightening Torque:
2.2 - 2.6 ft·lbs
Condensate Pipe Connection
Condensate Hose
(Accessory)
Max. 11-13/16 inches
1-1/8 inche
s
Elbow or Vinyl Chloride VP25
Vinyl Tape
(Field-Supplied)
Use PVC
(Transparent)
for Checking Drainage
13/16 +3/16 inch
1/25 to 1/100
Downward Slope
Min. 3-15/16 inches (100mm)
(higher as possible)
Main Condensate Piping (Min. VP30)
Use PVC with VP25
This condensate pipe shall be
separating from other pipes.
Condensate Piping
of Unit Side
(Downward Slope from Rising Part)
Install the condensate hose
horizontally or with an upward slope.
Condensate Hose
f. Raising Condensate Piping
When raising the condensate pipe, install it according to the dimensions shown in the figure below.
The total condensate piping length of a+b+c should be within 43-5/16 inches (1,100mm).
● Make sure to use the factory-supplied condensate hose and hose clamp. Other makes are more
susceptible to moisture leakage.
● Do not bend or twist the factory-supplied condensate hose. Sealing properties of the hose can be
compromised.
● Do not apply an excessive force to condensate pipe connections. They can be easily damaged.
NOTICE
c
Ceiling
Hose Clamp (Accessory)
a (Max. 11-13/16 inches)
(300mm)
Max. 33-7/16 inche
s
(850mm)
b
Condensate Hose
(Accessory)
3.3 to 4.9ft
(1 to 1.5m)
Support Part
1/25 to 1/100
Down-Slope
Shorter
as possible.
Min. 1-1/8 inches
Tightening Torque: 2.2 - 2.6 ft·lbs
