Hitachi RPC-FSN3E Installation And Operation Manual page 13

Drain piping
4.2 DRAIN PIPE CONNECTION
The standard direction of drain piping connection is right side as
viewed from the discharge grilles. However, it can be performed
from the left side connection is required due to the building cons-
truction.
For Right Side Connection
1 Insert the hose into the wire clamp.
2 Push the drain hose onto the drain boss until the hose rea-
ches the end of the drain pan.
3 Tighten the screw for the wire clamp in order to hold the hose
around the drain connection without any leakage of drain
water as shown bellow.
4 Insulate the drain hose around the wire clamp to prevent any
condensation as shown.
Wire Clamp A
Drain Hose
Wire Clamp B
Drain Pipe
For Left Side Connection
Fan Runner Fan Motor
Drain Boss
Drain Plug
Insulation Plug
Drain Plug
Remove the drain plug of the left-side drain boss as indicated in
the following procedure.
1 Cut the fastener.
2 Remove the insulation material.
3 Remove the drain plug.
4 Insert the drain plug into the right-side and drain boss using a
driver as shown below.
Drain Plug
Driver
5 After inserting the drain plug into the right-side drain boss,
seal the jointed part by using a water-proof chloride type sea-
ling material and secure it with a fastener.
13 PMML0320A rev.2 - 09/2015
Drain Boss
Insulation
Rear Side
Fastener Band
Drain Connection
Unit
Side
Plug
6 Wrap the insulation material around the drain connection.
7 Connect the drain hose to the left side drain connection using
the same procedure as for the right side drain connection.
Connecting a Drain Piping
1 Prepare a polyvinyl chloride (PVC) tube with an outer diame-
ter of 26mm. (VP20)
2 Pay attention to the position of the drain pipe. Keep the down-
slope, 1/25 to 1/100. Do not create an upper slope or rise for
the drain piping.
3 Seal the connecting part of the drain pipe by using the water-
proof chloride type sealing material.
4 Wrap the insulation material around the connecting part per-
fectly.
5 Fasten the drain pipe to the connecting part using the factory-
supplied clamp.
Drain Hose
Clamp
Insulation
6 Do not connect the drain pipe with sanitary sewage or any
other drainage pipe.
7 When installing the pipe, do not tie the drain pipe and refrige-
rant pipe together. Tie the drain pipe as shown below
Band
Rear Side piping
8 After completing the drain pipe work, pour water into the drain
pan and check to ensure that water flows smoothly
Seal Material
Insulation
(field supplied)
Secure
Downward
Slope
Pipe
Band
Rear Side piping