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Fixing of indoor unit
Latch (2 locations)
Indoor unit
Installation board
Installation board
Wall
Indoor unit base latch
CONNECTION OF REFRIGERANT PIPINGS
Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
Indoor
Press
(Do not turn)
Remove
○ Remove the flared nuts. (on both liquid and gas sides)
○ Install the removed flared nuts to the pipes to be connected,
then flared the pipes.
• Flaring work
Copper pipe diameter
Clutch type flare tool for
Measurement B
R410A
ø6.35
0.0 - 0.5
ø9.52
0.0 - 0.5
ø12.7
0.0 - 0.5
ø15.88
0.0 - 0.5
Flaring
Use a flare tool designed for R410A or a conventional flare tool.
block
Copper pipe
Please note that measurement B (protrusion from the flaring block) will vary depending on the
type of a flare tool in use.
If a conventional flare tool is used, please use a copper pipe gauge or a similar instrument to
check protrusion so that you can keep measurement B to a correct value.
Open/close and detachment/attachment of the air inlet panel
○ To open, pull the panel at both ends of lower part
and release latches, then pull up the panel until
you feel resistance.
(The panel stops at approx. 60° open position)
○ To close, hold the panel at both ends of lower
part to lower downward and push it slightly until
the latch works.
○ To remove, pull up the panel to the position
shown in right illustration and pull it toward you.
○ To install, insert the panel arm into the slot on the
front panel from the position shown in right
illustration, hold the panel at both ends of lower
part, lower it downward slowly, then push it
slightly until the latch works.
ELECTRICAL WIRING WORK
Preparation of indoor unit
In case of faulty wiring connection, the indoor unit stops, and then
the run lamp turns on and the timer lamp blinks.
Mounting of connecting wires
• How to remove the indoor unit from the installation board
Installation Steps
1
Pass the pipe through
1
Push up at the marked portion of the indoor unit base lower latch, and slightly pull it toward
the hole in the wall,
you. (both right and left hand sides) (The indoor unit base lower latch can be removed from
and hook the upper
the installation board)
part of the indoor unit
2
Push up the indoor unit upward. So the indoor unit will be removed from the installation board.
to the installation board.
2
Gently push the lower
part to secure the unit.
The marked portion of the indoor unit base lower latch.
CAUTION
Dimension A
Liquid side ø6.35 : 9.1 (mm)
Do not apply refrigerating machine
A
Gas side ø9.52 : 13.2 (mm)
oil to the flared surface.
ø12.7 : 16.6 (mm)
ø15.88 : 19.7 (mm)
Measurement B (mm)
Conventional (R22) flare tool
Clutch type
Wing nut type
1.0 - 1.5
1.5 - 2.0
1.0 - 1.5
1.5 - 2.0
1.0 - 1.5
2.0 - 2.5
1.0 - 1.5
2.0 - 2.5
Approx. 80
To remove / To install
CAUTION
Since this air conditioner has been designed to collect dew drops on the rear
surface to the drain pan, do not attach the power cord above the gutter.
Drainage
○ Arrange the drain hose in a downward angle.
○ Avoid the following drain piping.
Higher than specified
○ Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.
○ When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.
Connection
Indoor
Liquid side
Gas side
(Do not turn)
○ Connect the pipes on both liquid and gas sides.
○ Tighten the nuts to the following torque.
Liquid side (ø6.35) : 14.0 - 18.0 N·m (1.4 - 1.8 kgf·m)
Gas side (ø9.52) : 34.0 - 42.0 N·m (3.4 - 4.2 kgf·m)
(ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m)
(ø15.88) : 68.0 - 82.0 N·m (6.8 - 8.2 kgf·m)
CAUTION
Do not apply excess torque to the flared nuts.
Otherwise, the flared nuts may check depending.
If FDC71VNP is connected, use reducer at gas side
of indoor unit to change the pipe size from ø15.88 to
ø12.7. (Reducer is attached in the outdoor unit
accessory)
How to remove and install the front panel
○Removing
① Remove the air inlet panel.
② Remove the screw (A) 2pcs / screw
(B) 3pcs fixing to the front panel.
③ Remove the 3 latches in the upper
section of the front panel and then
remove the front panel from the unit.
○Installing
① Remove the air filter.
② Cover the unit with the front panel.
③ Tighten the screw (A) 2pcs / screw
(B) 3pcs to fix the front panel.
④ Install the air filter.
Screw (B)
⑤ Install the air inlet panel.
The screw of the lid is
Terminal block
tightened securely.
Lid
RKW012A411
Gutter
Pipe accommodating section
CAUTION
Go through all installation steps and check if the drainage is all right.
Otherwise water leak may occur.
Odor from
the gutter
The drain hose
Wavy
The gap to the ground is
The drain hose
tip is in water.
5 cm or less.
tip is in the gutter.
Insulation of the connection portion
Cover the coupling with insulator and then cover it with tapes.
Vinyl tape
Use an attached insulation pad for heat insulation.
Position it so that the slit area faces upward.
• Cover the indoor unit s flare-connected joints, after they are checked for a gas leak, with an indoor unit
heat insulating material and then wrap them with a tape with an attached insulation pad placed over
the heat insulating material's slit area.
Finishing work and fixing
Refrigerant piping
Connection wiring,
Cover the exterior portion with outer tape and
Earth wiring
shape the piping so it will match the contours
Outer tape
of the route that the piping to take.
Drain hose
Also fix the wiring and pipings to the wall with
clamps.
Wood screw
Clamp
Air inlet panel
Air filter
Front panel
Screw (A)
Screw (A)
Screw (B)
Screw (B)
Installing the air-cleaning filters
1. Open the air inlet panel and remove the air filters.
2. Install the air-cleaning filter in the filter holders, and then install the filter holders in the air conditioner.
• Each air-cleaning filter can be installed in the left or right filter holder.
3. Install the air filters and close the inlet panel.
Wall
Latch
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