Drain Pipe - Hitachi RPIZ-0.8HNATNQ Operation Installation Maintenance Manual

6.

Drain Pipe

(1) The position of the drain pipe connection is
shown in Fig. 6.1.
(2) Prepare a polyvinyl chloride pipe with a
32mm outer diameter.
(3) Fasten the tubing to the drain hose with the
adhesive agent and the factory-supplied
clamp. The drain pipe must be performed
with a down-slope pitch of 1/25 to 1/100.
(4) Insulate the drain pipe after connecting the
drain hose.
Pipe Support
(Field Supplied)
90º Bend (VP25)
Field Supplied
Drain Lift Pipe (PVC Pipe,
VP25)
(Field Supplied)
Drain Pipe (300L)
Indoor Unit
(Accessory)
Rubber Stopper
Water Pan
(Accessory)
235
Drain Pump
Fig. 6.1 Drain Pipe
Drain Pipe (PVC Pipe, VP25)
(Field Supplied)
1/25~1/100 Down-Slope
58
25
380
CAUTION
Where the relative humidity of air inlet or ambient
air exceeds 80%, an auxiliary water pan shall be
fabricated at installation site and placed under
the indoor unit, as shown in Fig. 6.2.
Indoor Unit
Condensate Pan
(Field-Supplied)
Fig. 6.2 Water Pan
CAUTION
(1) 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.
(2) The drain pipe shall not be connected with sewage
pipe or other drain pipes.
(3) 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.
(4) Check if water flows without obstruction following
the procedure shown below after the proper
connection of wires and drain pipes.
a.Turn on the power.
b.Fill the water pan with 2L or 2.5L of water.
c. Check and ensure the water flows without
obstruction and no leakage exists. Pour 2L of
water if no water flows out of pipe end.
6
Water Outlet