TC-12001
2-47
4-WAY CASSETTE
P5414946-rev.1
17
(3) Connecting Drain Piping
(a) Connect the factory-supplied drain hose
to the drain pipe connection with the
polyvinyl chloride adhesive. Perform
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retaining and curing according to the
adhesive manufacturer information.
The adhesive Eslon No.73 (Sekisui
Chemical Co. Ltd) is recommended.
(b)
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Fig. 6.2 Insertion of Drain Hose
(c) Tighten the factory-supplied hose clamp
at the vinyl tape (white) of the drain hose
(20mm from the end face of the drain
hose) until approximately 28mm of the
length from the top of the screw to the
bottom of hose clamp as shown in Fig. 6.3.
Fig. 6.3 Drain Hose Connection
Tightening Torque: 3.0 - 3.5N.m
6.
Drain Piping
Perform the drain piping work and attaching the
insulations before the refrigerant piping work.
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Do not create an upper-slope or rise for the drain
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indoor unit and leakage into the room will occur
when the system operation is stopped.
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Do not connect the drain pipe with sanitary or
sewage piping or any other drainage piping.
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When the common drain piping is connected with
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indoor unit must be higher than the common
piping. The pipe size of the common drain pipe
must be large enough according to the unit size
and number of units.
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After performing drain piping work and electrical
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as in the following procedure.
Do not insert the drain pipe for the indoor unit
to the drainage trench where corrosive gases
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that may cause the poisoning.
(2) Prepare a polyvinyl chloride pipe with a
32mm outer diameter. (VP25 (based on JIS
K6741) is recommended.)
(1) The position of the drain pipe connection is
shown in Fig. 6.1.
Fig. 6.1 Position of Drain Pipe Connection
Hose Band (Accessory)
Tightening Torque:
3.0 - 3.5N.m
Drain Pipe Connection
Drain Hose
(Accessory)
Max. 300mm
28mm
Elbow or Vinyl Chloride VP25
Vinyl Tape
(Field-Supplied)
Use Vinyl Chloride
Type Adhesive
(Transparent)
for Checking Drainage
20+ 5mm
Drain Pipe
Connection
Drain Hose
(Accessory)
Twisted, incompletely insertion.
(Correct)
(Incorrect)
Drain Hose
(Accessory)
Twisted
Incompletely Insertion
55
82
Drain Pipe Connection
184
(mm)
