Indoor Unit Installation (2)
3.
Installing indoor unit.
3-1. Right-side, right-back, or right-bottom piping.
1) Attach the drain hose to the underside of the refrigerant pipes
with an adhesive vinyl tape.
2) Wrap the refrigerant pipes and drain hose together with an
insulation tape.
3) Pass the 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) Open the front panel, then open the service lid. (Refer to
Installation Tips.)
5) Pass the inter-unit wiring from the outdoor unit through the
feed-through wall hole and then through the back of the indoor
unit. Pull them through the front side.
Bend the ends of tie wires upward for easier work in advance.
(If the inter-unit wiring ends are to be stripped first, bundle wire
ends with adhesive tape.)
6) Press the bottom frame of the indoor unit with both hands to
set it on the mounting plate hooks. Make sure that the wires do
not catch on the edge of the indoor unit.
3-2. Left-side, left-back, or left-bottom piping.
1) Attach the drain hose to the underside of the refrigerant pipes
with adhesive vinyl tape.
2) Be sure to connect the drain hose to the drain port in place of
a drain plug.
3) Shape the refrigerant pipe along the pipe path
marking on the mounting plate.
4) 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.
5) Pull in the inter-unit wiring.
6) Connect the inter-unit piping.
7) Wrap the refrigerant pipes and drain hose together with
insulation tape as right figure, in case of setting the drain hose
through the back of the indoor unit.
8) While exercising care so that the inter-unit wiring do not catch
indoor unit, press the bottom edge of indoor unit with both hands
until it is firmly caught by the mounting plate hooks. Secure
indoor unit to the mounting plate with the screws (M4 × 12L).
3-3. Wall embedded piping.
Follow the instructions given under
1) Insert the drain hose to this depth so it won’t be pulled out of
the drain pipe.
Right-bottom
piping
Right-back piping
Bind coolant pipe
and drain hose
together with
insulating tape.
Remove pipe port cover
here for right-side piping.
Remove pipe port cover
here for right-bottom piping.
Mounting plate
A
Wire guide
When stripping the
ends of inter-unit wiring
in advance, bind right
ends of wires with
insulating tape.
Hang indoor unit’s hook here.
Inter-unit wiring
Mounting plate
A
Remove pipe port cover here for left-bottom piping.
Remove pipe port
cover here for
left-side piping.
Left-bottom piping
Left-side
piping
Left-back
piping
How to set drain plug
No gap
Do not apply lubricating
oil (refrigerant oil) when
inserting.
Application of causes
deterioration and drain
leakage of the plug.
Insert a hexagon wrench (4mm)
Wrap insulating tape around the
bent portion of refrigerant pipe.
Overlap at least half the width
of the tape with each turn.
Drain
hose
Caulk this hole
with putty or
caulking material.
Bind with plastic
tape.
A Mounting plate
Refrigerant
pipes
Drain hose
Bottom frame
H M4
×
12L (2 point)
Mounting
plate
A
Left-side, left-back, or left-bottom piping
.
Inner wall
Vinyl chloride
drain pipe
(VP-30)
Drain hose
50mm
or more
Insert drain hose to this
depth so it won’t be
pulled out of drain pipe.
Outer wall
