Drain Piping - Hitachi air core 700 Operation Installation Maintenance Manual

6. Drain Piping

6. Drain Piping
1. The drain pipe connection position is shown in figure 6.1.
2. Prepare a PVC pipe (Outer diameter: 32mm).
3. Fix PVC pipe to the drain pipe with the adhesion agent and clamps provided by the factories, the
downward slope of the drain pipe is 1/25 - 1/100.
4. Perform the heat preservation work on the drain pipe after it is connected.
(When choosing drain pump)
Drain tank
(When no drain pump is selected)
1/25~1/100
downward slope
Incorrect: leaned upward
Indoor unit
Uplifted part
NOTICE
•
When the relative humidity of inlet or ambient air exceeds 80%, apply an (field-supplied) auxiliary
drain pan beneath the indoor unit as shown in Fig.6.2.
Pipe support
(Installation site
preparation)
90° bend (VP25)
(Installation site
preparation)
Drain raising pipe (PVC pipe, VP25)
(Installation site preparation)
Drain pipe (L300)
Indoor unit
Accessory
rubber plug
(Accessory)
Drain tray
235
(Optional)
Electric Thermal insulation materials
cabinet
(Prepared for
installation and the site)
Drain pipe
Thermal insulation
materials
Incorrect
Figure 6.1 Drain Pipe
Drain pipe (PVC pipe, VP25)
(Installation site preparation)
1/25 - 1/100 downward slope
58
380 25
Adhesion agent
(for sealing)
Pipe clamp
PVC pipe (Prepared for
installation and the site)
Connecting the drain pipe
1/25~1/100 downward slope
Share the drain pipe
-12-
Unit: mm
Correct
The drain pipe shall
be separated from
other pipes.