IVT 12PHR-N - Page 68

7-4
12PHR-N
6
4
Checking drainage
(1) Remove the open panel.
(2) Remove the drain cover with a slotted screwdriver.
(3) Pour some water into the drain hole with the drop-
per.
(4) Check the water drains smoothly.
(5) Replace the drain cover.
(6) Replace the open panel.
Not running wavy.
Not left
in water.
No trap
allowed.
Not to rise.
Connecting the drain hose
(1) Connect a drain hose.
(2) Tape over the connecting
part.
ø16mm
No trap allowed.
Notes:
• Be sure to lay the drain hose downward for smooth drainow.
•
Be careful not to allow the drain hose to rise, form a trap or leave its end in
water, as shown below.
• Coil thermal insulation around a drain hose extension, if running in the room.
Drain hose
(Commercially
available)
Flaring the pipe end
(1) Cutting with a pipe cut-
ter
Cut at a right angle.
(2) Deburring
Allow no cuttings in the
pipe.
(3) Putting in the are nut
(4) Flaring
Flare processing dimen-
sions(A)
Tool A
R410A tool 0 - 0.5 mm
Conventional
tool
1.0 - 1.5 mm
(5) Checking
To be ared perfectly
circular.
Flare nut not missing
.
Flare
nut
Connecting the pipes
Connect the pipes for the indoor unit rst and then for
the outdoor unit.
(1) Tighten the flare nuts
by hand for the rst 3-4
turns.
(2) Use a wrench and
torque wrench to tight-
en up the pipes.
• Do not over tighten the
pipes. It may be deformed or
damaged.
90°
A
Wrench
Torque
wrench
Flare nut tightening torque
Pipe size Torque
Liquid
side
1/4" (ø 6.35 mm) 16±2 N·m (1.6±0.2 kgf·m)
Gas side 3/8" (ø 9.52 mm) 38±4 N·m (3.8±0.4 kgf·m)
CONNECTING THE DRAIN HOSE
9 DROPPER
Drain cover
5
540
299
Referring to the gure, rmly fas-
ten the outdoor unit with bolts.
OUTDOOR
UNIT IN-
STALLATION
CONNECTING THE REFRIGERANT PIPES
N
1
2
(1) Process the end of the connecting cable for the indoor
side.
• Use a copper cable. (Cross-section area 1,5 mm
2
)
• Use a cable which is not lighter than polychloroprene
sheathed exible cord (code designation 60245 IEC
57).
(2) Remove the open panel.
1. Push the release button and open the lower part of
the open panel.
2. Lift the open panel up slightly and remove it.
(3) Unscrew the screw and release the cable holder.
(4) Connect the cable.
• Be very careful not to confuse the terminal con-
nections. Wrong cabling may damage the internal
control circuit.
• The markings on the indoor unit’s terminal board
must match with those of the outdoor unit.
(5) Fasten the cable with the cable holder and the screw.
(6) Attach the terminal cover with the short screw.
(7) Replace the open panel.
3
8 SHORT SCREW
7 TERMINAL
COVER
Connecting cable
Earth wire
8mm
8mm
55mm
60mm
Terminal board
Screw
Cable holder
1
2
Open panel
Release
button
Earth wire
CONNECTING THE CABLE TO THE INDOOR UNIT
12PHR-N_S530612PHRN.indd 4 2013/8/7 15:42:35