Hitachi RPC-3.0FSN3 - Page 26

20
P5416543
NOTES:
•
Connect the eld-supplied drain pipe to the
drain hose by the polyvinyl chloride adhesive.
Perform rmly cleaning the connection
surface, applying the adhesive, inserting the
pipe, retaining and curing according to the
adhesive manufacturer information.
The adhesive Eslon No.73 (Sekisui Chemical
Co. Ltd) is recommended.
•
Insert the drain hose completely. If not, or
twisted, it will cause water leakage.
•
Attach the hose clamp to be the screw part
upward not to touch the screw part to the air
lter.
•
If the polyvinyl chloride adhesive is used to
the drain boss which is ABS resin made, a
crack and water leakage may occur.
•
The tightening torque for hose clamp shall be
3.0 to 3.5N-m.
(3) Connecting Drain Piping
(a) Prepare a polyvinyl chloride pipe with a
26mm outer diameter. (VP20 (based on
JIS K6741) is recommended.)
(b) When the drain hose is used, do not
create rising part or twist.
(c) Insulate surely the polyvinyl chloride pipe
after connecting.
(d) Tighten the hose clamp after surely
inserting the polyvinyl chloride pipe.
(e) The drain pipe must be performed with a
down-slope pitch of 1/25 to 1/100.
(f) Wrap the insulation (accessory) around
the hose clamp to cover drain hose, drain
pan, hose clamp without gap.
NOTES:
*

Do not connect the drain pipe with
sanitary or sewage piping or any other
drainage piping.
*

Do not tighten the drain pipe and the
refrigerant pipe together by the hose
clamp.
(4) After the drain piping work is completed,
check that water ows smoothly by pouring
water into the drain pan by hose.
NOTE:
The optional drain-up mechanism is required
when the drain piping is connected from
the upper surface of indoor unit. The
details shall be referred to Installation
& Maintenance Manual of the drain-up
mechanism.
Pay attention not to splash water to the
electrical parts such as the fan motor, the oat
switch or thermistors.
Hose Clamp
Insulation
(Accessory)
Rear Side Piping Right Side Piping
Hose Clamp
(Accessory)
Hose Clamp
(Accessory)
Insulation
(Accessory)
Insulation
(Accessory)
Insulation
(Attached to drain hose)
Insulation (Field-Supplied)
Create down-slope
for well drainage.
Polyvinyl Chloride Pipe
(VP20, Field-Supplied)
Drain Pan
Gluing is
not required.
Gluing is
not required.
Drain Boss
Drain Hose
(Attach to indoor unit.)
Insulate without gap
and wrap the tape
around the connection.
Connect tightly.