Specifications

Installation Manual EDUS04-740
42 Room Air Conditioners D-Series
Indoor Unit Installation
2. Boring a wall hole and installing wall embedded pipe.
• For walls containing metal frame or metal board, be sure to use a
wall embedded pipe and wall cover in the feed-through hole to
prevent possible heat, electrical shock, or fire.
• Be sure to caulk the gaps around the
pipes with caulking material to prevent
water leakage.
1) Bore a feed-through hole of 3 1/8in in the
wall so it has a down slope toward the
outside.
2) Insert a wall pipe into the hole.
3) Insert a wall cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping, caulk
pipe hole gap with putty.
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 adhesive vinyl tape.
2) Wrap the refrigerant pipes and
drain hose together with
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 grille, then
open the service lid. (Rifer to
Installation tips)
5) Pass the interconnecting
wires 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 in advance for easier work.
(If the interconnecting wire ends are to be stripped first, bundle
wire ends with adhesive tape.)
6) Press the indoor unit’s bottom panel with both hands to set it
on the mounting plate hooks. Make sure 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.
Inside Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Wall embedded pipe
(field supply)
φ
3 1/8”
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 interconnecting
wires in advance, bind
right ends of wires with
insulating tape.
Hang indoor unit’s hook here.
Interconnecting
wires
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 machine
oil) when inserting
Application of causes
deterioration and drain
leakage of the plug
Insert a hexagon wrench (3/16in)