-
101
-
'17 • SCM-T-225
• Flaring work
Measurement B
Flaring block
Copper pipe
○ Install the removed flared nuts to the pipes to be connected,
then flared the pipes.
○ Remove the flared nuts. (on both liquid and gas sides)
Keep the openings of the pipes covered with tapes etc. to preve
nt dust, sand, etc. from entering them.
CONNECTION OF REFRIGERANT PIPINGS
INSTALLATION OF INDOOR UNIT
Preparation
(Do not turn)
Press
Remove
A
90 ± 0.5˚
Dimension A Liquid side ø6.35 :
9.1 (mm)
Gas side ø9.52 : 13.2 (mm)
ø12.7 : 16.6 (mm)
CAUTION
Do not apply refrigerating machine oil to the flared surface.
Indoor
CAUTION
Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may crack.
TERMINAL CONNECTION FOR AN INTERFACE
Remove the control lid. (Remove the screw.) There is a terminal (respectively marked with CNS)
for the indoor control board.
In connecting an interface, connect to the respective terminal
securely with the connection harness supplied with an option
“
Interface connection kit SC-BIKN2-
E
” and
fasten the connection harness onto the indoor control box with
the clamp supplied with the kit.
For more details, please refer to the user’s manual of your
“
Interface connection kit SC-BIKN-
E
”.
○
Connect the pipes on both liquid and gas
s
ides.
○
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)
Connection
Indoor
(Do not turn)
Remove the control lid. Remove the wiring clamp. Connect the connecting wire to the terminal block. 1)
Connect the connect
ion wire securely. If the wire is not affixed completely,
contact will be poor, and it is dangerous as the terminal bl
ock may heat up
and catch fire.
2)
Take care not to confuse the terminal numbers for indoor and
outdoor
connections.
Fix the connect
ing wire by wiring clamp.
C
onnect the connecto
r
of the
remote cont
rol singnal
r
eceive
r t
o
the
r
elay
wi
ring
.
Attach the control lid.
ELECTRICAL WIRING WORK
Preparation of indoor unit
Mounting of connecting wires
RJJ012A002
Liquid side Gas side
Use cables for interconnection wiring to avoid loosening of the
wires.
CENELEC code for cables Required field cables.
H05RNR4G1.5 (example) or 245IEC57 H Harmonized cable type 05 300/500 volts R Natural-and/or synth, rubber wire insulation N Polychloroprene rubber conductors insulation R Stranded core 4or5 Number of conductors G One conductor of the cable is the earth conductor (yellow/green) 1.5 Section of copper wire (mm
2
)
○
In case of faulty wiring connect
ion, indoor unit does not operate. Then, run lamp turns on and
timer lamp blinks.
○
Attach the washers and nuts to the suspensi
on bolts.
○
Attach the hanging tool to the above nuts, and tighten the nuts
.
M10 washer
M10 nut
M10 suspension bolt
M10 nut
M10 washer
M10 spring lock washer
Main fram
e
Inserts
Holed anchor Holed plug
Suspension bolts M10
Concrete
If steel embedded ceilin
g
Let
the
pipe
side
be
slightly
sloped.
Pipe side
Pour water
Water
surface
0~5mm
Vinyl hose
B
A
unit : mm
Model
25, 35 50, 60
Inlet
160
Outlet
99
Adjustment for horizontality
•
Adjust so the bottom side of
the unit will be leveled with
the water surface as
illustrated belo
w
.
Air inlet and outlet size
○
Size of air inlet and outlet of the plate.
○ Cover the flare connection part of the indoor unit with attach
ed insulation material after a gas leakage
inspection, and tighten both ends with attached bands.
•
Make sure to insulate both gas pipes and liquid pipes complete
ly.
※
Incomplete insulation may cause dew condensation or water dropp
ing.
•
Use heat-resistant (120 °C or more) insulations on the gas sid
e pipes.
•
In case of using at high humidity condition, reinforce insulat
ion of refrigerant pipes.
Surface of insulation may cause dew condition or water dropping
, if insulations are not reinfoced.
<
The case of using thickness of insulation is 10mm
>
<
The case of using reinfoced insulation
>
Pipe cover
Unit
Unit
Band
Band (Prepare on site)
Insulation (Prepare on site)
Pipe cover (Prepare on site)
Band
The thickness of insulation is 10mm
•
If the bottom drain piping can be done with a descending gradie
nt (1/50-1/100), it is
possible to connect the pipes as shown in the drawing below.
•
When sharing a drain pipe for more than one unit, lay the main
pipe 100mm
below the drain outlet of the unit. In addition, select VP-30 o
r bigger size for
main drain pipe.
Descending slope greater than 1/100
VP-30 or bigger
As wide as possible
(about100mm)
○
Install the drain pipe according to the installation manual in
order to drain properly.
Imperfection in draining may cause flood indoors and wetting t
he househol
d goods, etc.
○
Do not put the drain pipe directly into the ditch where toxic
gas such as sulfur, the other harmful and inflammable gas is
generated. Toxic gas would flow into the room and it
would cause serious damage to user’s health and safety (some
poisoning or deficiency of oxygen). In addition, it may cause
corrosion of heat exchange
r
and bad smell.
○
Connect the pipe securely to avoid water leakage from the joint
.
○
Insulate the pipe properly to avoid condensat
ion drop.
○
Check if the water can flow out properly from both the drain
outlet on the indoor unit and the end of the drain pipe after i
nstallation.
Insulating material (to be removed)
Joint
Rubber stopper (to be removed)
Standard hard polyvinyl chloride pipe
Connecting port of bottom
drain pipes
(Outside diameter:25mm)
Connecting port of top drain pipe
DRAIN PIPE
(3)
Make sure to make descendi
ng slope of greater than 1/100 and do
not make up-down bend and/or trap in the midwa
y.
•
Pay attention not to give stress on the pipe on the indoor unit
side, and support and fix the pipe as close place to the unit
as possible when connecting the drain pipe.
•
Do not set up air vent.
Drain hose
Joint
Drain hose (VP25)
Cramp
(1)
Insert the joint to the drain hose on the indoor unit and fix i
t securely with the clamp (small).
•
Do not apply adhesives on this end.
(2)
Connect the drain pipe (VP25) to the joint and fix it seaurely
with the clamp (big).
•
The position for drain pipe outlet can be raised up to 600mm ab
ove the ceiling. Use elbows
for installation to avoid obstacles inside ceiling. If the hori
zontal drain pipe is too long
before vertical pipe, the backflow of water will increase when
the unit is stopped, and it
may cause overflow of water from the drain pan on the indoor un
it. In order to avoid
overflow, keep the horizontal pipe length and offset of the pip
e within the limit shown in the
figure below.
(4)
Insulate the drain pipe.
•
Be sure to insulate the joint and the drain pipe installed i
ndoor otherwise it may cause dew condensat
ion and water leakage.
Drain up
235~265mm
Drain hose
Maximum local
drain up dimension
Joint for VP25 (Prepare on site)
600
Right overhead
Pour water in the drain pan with a siphon.
Pouring water hose
Drain pan
Remove grommet from the unit.
Gromment
Outline of bottom drain piping work
Securing the suspension bolt
s
Installing the main unit
If wooden ceilin
g
Holes for suspention bolts
Clamps
Beams
Square bars for suspension the air-conditioner
○
Either use a level vial, or adjust the level according to the m
ethod belo
w
.
○
If the unit is not leveled, it may cause malfunctions or inoper
ation of the float switch.
Work procedure
Securing the remote control signal receiver
(1)
Open a through-
hole on the wall to install the reception face for the
remote control signal receiver
③
.
(2)
Insert the remote control signal receiver
③
in the installation frame
4
,
and fix the calking section.
(3)
Fix the installation frame
④
on the wall using the flat head machine
screws
⑩
.
(4)
Fix the plate (display)
⑪
on the installation frame
④
using the flat head
machine screws packed
together with the plate (display)
⑩
.
⑪
Plate (display
)
⑩
Flat head machine scre
w
Flat head machine scre
w
(In the pack of
⑪
)
④
Installation fram
e
③
Remote control signal receiver
Cut o
ff this section if it interferes with the wall
.
Calkin
g
Calkin
g
Cut o
ff this section if it interferes
with the wall
.
○
Conventionally,
operate
the
wireless
remote
control
by
holding
in
your
hand.
○
Avoid
installing
it
on
a
clay
wall
etc.
INSTALLATION OF WIRELESS REMOTE CONTROL
Mounting method of battery
Fixing to pillar or wall
1
Wood screws ø3.5 X 16
Wireless remote control
5
Cover
Battery
6
○
Pull
out
the
cover
and
mount
the
batteries
[R03
(AAA,
Micro),
×
2
pieces]
in
the
body
regularly. (Fit
the
poles
with
the
indication
marks,
＋
&
−
without
fail)
○
Do not use new and old batteries together.
Disconnect
When
two
air-conditioners
are
installed
in
the
same
room,
use
this
setting
when
the
two
air-conditioners
are
not
operated
with
one
wireless
remote
control.
Set
the
wireless
remote
control
and
indoor
unit.
INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM
Setting the wireless remote control
Pull out the cover and take out batteries. Disconnect the switching line next to the battery with wire cutters.
Insert batteries. Close the cover.
Setting an indoor unit
Turn off the power source, and turn it on after 1 minute. Point the wireless
remote control that was set according to the
procedure described on the left side at the unit display section and send a signal by pressing the ACL switch on the wireless
remote control.
Since the signal is sent in about 6 seconds after the ACL swit
ch
is pressed, point the wireless
remote control at the unit display
section for
some time.
Check that the reception buzzer sound "pip" is emitted from the
indoor unit. At completion of the setting, the indoor unit emits a buzzer so
und
"pip". (If no reception tone is emitted, start the setting from
the
beginning again.)
• Forced cooling operation
Turn
off power source. Turn on power source again after a while. The
n, press the
ON/O
FF button continuously for at least 5 seconds. (The operation
will start.)
Connect charge hose to check joint of outdoor unit. Liquid side : Close the liquid valve with hexagon wrench key. Gas side : Fully open the gas valve. Carry out cooling operation. (If indoor temperature is low, ope
rate
forced cooling operation.) After low pressure gauge become 0.01MPa, stop cooling operation
and close the gas valve.
<How to pump down>
○
In order to protect the environment, be
s
ure to pump down (recovery of refrigerant).
○
Pump down is the method of recoverin
g
refrigerant from the indoor unit to the
outdoor unit when the pipes are removed from the unit.
HOW TO RELOCATE OR DISPOSE OF THE UNIT
Unit ON/OFF button
INSTALLATION TEST CHECK POINTS
After installation
Power cables and connecting wires are securely fixed to the ter
minal block.
(Both indoor and outdoor)
Power source voltage is correct as the rating.
The drain hose is fixed securely.
Service valve is fully open.
No gas leaks from the joints of the service valve.
The pipe joints for indoor and outdoor pipes have been insulate
d.
The screw of the control lid is tightened securely.
Test run
Operation of the unit has been explained to the customer. (Thre
e-minutes restart preventive timer)
When the air-conditioner is restarted or when changing the oper
ation, the unit will not start operating
for approximately 3 minutes. This is to protect the unit and it
is not a malfunction.
The wireless remote control is normal.
Protective functions are not working.
Water drains smoothly.
No abnormal noise.
Air-conditioning operation is normal.
Check the following points again after completion of the instal
lation, and before turning on the power. Conduct a test run aga
in and ensure that the unit operates properly.
Explain to the customer how to use the unit and how to take car
e of the unit following the installation manual.
○
Secure the suspensi
on bolts firmly following the
illustrations and other
instructions
.
Reception
pip
⑨
⑨
F
G
H
G
A
B
660 860
13
12
13
8
7
Pipe cover (Prepare on site)
Supporting fixture
Supporting metal
Air vent
No bump
No trap
Not touching the water
T
rapped air will generate noises.
Insulation material
1.5m~2m
Descending slope greater than 1/100
○
Conduct a drainage test after completion of the electrical wor
k and piping work.
○
During the trial, make sure that drain flows properly through t
he piping and that no water
leaks from connections.
○
In case of a new building, conduct the test before it is furni
shed with the ceiling.
○
Be sure to conduct this test even when the unit is installed in
the heating season.
(1)
Supply about 1000 cc of water to the unit through the air outl
et by using a feed water pump.
(2)
Check the drain while cooling operation.
Drain test
Procedures of drain test
7
(1)
(3)
(2)
(5) (6)
(4)
48
×
75mm
(1) (2)
(1) (2)
(3)
(3)
(1) (2)
(1) (2)
(3)
E
Copper pipe diameter
Use a flare tool designed for R410A or a conventional flare too
l.
Note that measurement B (protrusion from the flaring block) wil
l vary depending on the type of
a flare tool in use. If a conventional flare tool is used, use a copper pipe gauge o
r a similar instrument to check
protrusion so that you can keep measurement B to a correct valu
e.
Clutch type flare tool for R410A
Conventional (R22) flare tool
ø6.35
ø12.7
0.0 - 0.5
0.0 - 0.5
1.0 - 1.5
1.0 - 1.5
1.5 - 2.0
2.0 - 2.5
ø9.52
0.0 - 0.5
1.0 - 1.5
1.5 - 2.0
Measurement B (mm)
Clutch type
Wing nut type
Earth wire shall be Yellow/Green (Y/G) in color and longer than other AC wires for safety reason.
Be sure to connect
securely.
Terminal block
Wiring Clamp
The screw of the lid is tightened securely
Control Lid
Connecting wire
Wiring of the remote control signal receiver
