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English
9
English
Indoor Unit Installation
4.
Laying piping, hoses, and wiring
• The recommended installation method is back piping.
•
When performing bottom piping or side piping, refer to
“5. Bottom or side piping” on page 10.
4-1. Right-back piping
1) Attach the drain hose to the underside of the refrigerant pipes with
adhesive vinyl tape.
2) Wrap the inter-unit wire, refrigerant pipes and drain hose together
with insulation tape.
3) Pass the inter-unit wire, drain hose and refrigerant pipes through the
wall hole, then set the indoor unit on the mounting plate hooks by using the
markings at the top of the indoor unit as a guide.
4-2. Left-back piping
1) Replace the drain plug and drain hose.
2) Attach the drain hose to the underside of the refrigerant
pipes with adhesive vinyl tape.
3) Be sure to connect the drain hose to the drain port in place
of a drain plug.
4) Shape the refrigerant pipe along the pipe path marking on the mounting plate.
5) Pass drain hose and refrigerant pipes through the wall hole, then set the indoor unit on mounting plate hooks, using
the markings at the top of indoor unit as a guide.
6) Pull in the inter-unit wire.
7) Connect the inter-unit pipes.
8) Wrap the refrigerant pipes and drain hose
together with insulation tape as shown in the
figure on the right (in case of setting the drain
hose through the back of the indoor unit).
Left back piping
Right back piping
Bind refrigerant pipe and drain hose
together with adhesive vinyl tape.
A Mounting plate
Replacing onto the left side
1) Remove the insulation fixing screw on the right
and remove the drain hose.
2) Remove the drain plug on the left side and
attach it to the right side.
3) Insert the drain hose and tighten with included
insulation fixing screw. Forgetting to tighten this
may cause water leakages.
How to replace the drain plug and drain hose
Drain hose attachment position
The drain hose is on the back of the unit.
Front side of unit
Attachment on the right side
(factory default)
Attachment on the left side
Drain hose
Drain hose
Insulation
fixing screw
Insulation
fixing screw
Right side
Left side
How to set drain plug
No gap
Insert a hexagonal wrench (4mm).
Do not apply lubricating oil (refrigerant
oil) to the drain plug when inserting it.
The application of lubrication oil to the
drain plug will deteriorate the plug to
cause drain leakage from the plug.
Drain hose
Bind with
adhesive
vinyl tape.
A Mounting plate
Caulk this hole
with putty or
caulking material.
Wrap insulating tape around the bent portion
of refrigerant pipe.
Overlap at least half the width of the tape
with each turn.
