Drain Pipe Connection - Hitachi R32/R410A-Serie Installations- Und Betriebshandbuch

DRAIN PIPING

6.2 DRAIN PIPE CONNECTION

1 The position of the drain pipe connection is shown below.
Dimension (mm)
a
214
2 Prepare a polyvinyl chloride pipe with a 32 mm outer
diameter.
3 Fasten the tubing to the drain hose with an adhesive and the
factory-supplied clamp. The drain piping must be performed
with a down-slope pitch of 1/25 to 1/100.
Gradient of drain piping
!
C A U T I O N
Do not apply excessive force to the drain pipe connection. It could
cause a damage.
4 Connect the factory-supplied drain hose to the drain pipe
connection with the polyvinyl chloride adhesive. When
cleaning the connection surface, applying the adhesive,
inserting, retaining and curing the pipe, refer to information
given by the adhesive manufacturer.
Drain hose
!
C A U T I O N
The drain hose must be completely inserted. If it is not inserted
properly, or if it is twisted, water leakage may occur.
11 PMML0529 rev.1 - 02/2021
Drain piping
b c
169 66
1/25~1/100
Down slope
5 Attach the factory-supplied hose clamp to the vinyl tape
(gray) attached to the drain hose. The hose clamp shall be
20 mm away from the end face of the drain hose.
b: 300 mm
6 Then tighten the hose clamp to make sure that it is
approximately 28 mm in length from the screw to the edge of
the hose clamp.
a
a: 28 mm
7 Insulate the drain pipe after connecting the drain hose.
?
N O T E
If there is excessive clearance between the drain pipe connection and the
drain hose, add a sealing material between both parts in order to fit and
not deform the drain hose.
a
b
a: 20mm
Insulation (Field-Supplied)
Side
unit