Hitachi RPIH-3.0HNAUB1Q, Руководство по эксплуатации, установке и обслуживанию, Страница: 18 / 24

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Excessive and inadequate refrigerant is a
leading cause of system anomaly. Please
inject the right amount of refrigerant.
6. Drain Pipe
(1) See Fig. 6.1 for connection point of drain
pipe.
(2) Find a PVC pipe with an outside diameter of
32mm.
(3) Fix the PVC pipe to drain pipe through
adhesive and factory-supplied clamp. The
downward inclination of drain pipe is
1/25~1/100.
(4) Make thermal insulation after the proper
connection of drain pipe.
(When a drain pump DUPI-131Q#E
\DUPI-361Q#E is ordered)
Pipe Support
( Field Supplied )
90º Bend (VP25)
( Field Supplied )
Drain Lift Pipe (PVC Pipe, VP25)
(Field Supplied)
Indoor Unit
Drain Pipe (L300)
(Accessory)
Water Pan
Drain Pump
Rubber Stopper
(Accessory)
Drain Pipe (PVC Pipe, VP25)
(Field Supplied)
1/25~1/100 Downward Inclination
(Lift)
(When no drain pump is ordered)
Electric Box
1/25~1/100 Downward Inclination
Thermal Insulation Material
(Field Supplied)
Drain Pipe
Thermal Insulation Material
Adhesive (Seal)
Pipe Clamp
PVC Pipe (Field Supplied)
Incorrect: Slope Up
Indoor Unit
Elevated Portion
Incorrect
1/25~1/100 Downward Inclination
Connecting Drain Pipe
Shared Drain Pipe
Drain pipes shall be separated from other pipes
Correct
Fig. 6.1 Drain Pipe
Where the relative humidity of air inlet or
ambient air exceeds 80%, an auxiliary drain pan
shall be fabricated at installation site and placed
under the indoor unit, as shown in Fig. 6.2.
Indoor Unit
Auxiliary Water Pan
(Field Supplied)
Drain Outlet
Fig. 6.2 Water pan
(1)
(2)
(3)
(4)
a.
b.
C
.
The drain pipe installed shall slope down;
otherwise, the condensate may flow back and
leak into the room when the indoor unit is turned
off.
The drain pipe shall not be connected with sewage
pipe or other drain pipes.
Where the main drain is connected to other
indoor units, each indoor unit must be higher than
the main. Select drain pipes in ample size
depending on the refrigerating capacity and
quantity of indoor units.
Check if water flows without obstruction following
the procedure shown below after the proper
connection of wires and drain pipes.
Power on.
Fill the water pan with 2L or 2.5L of water.
Check and ensure the water flows without
obstruction and no leakage exists. Pour 2L of
water if no water flows out of pipe end.
Unit: mm