-
111
-
'17 • SCM-T-225
Work procedure
1. Select the suspension bolt locations and the pipe hole location.
(1) Use enclosed paper pattern as a reference, and
drill the holes for the suspension bolts and pipe.
※
Decide the locations based on direct measurements.
(2) Once the locations are properly placed, the paper
pattern can be removed.
2. Install the suspension bolts in place.
3. Fix with 4 suspension bolts, which can endure load of 500N.
4. Check the measurements given at the right
figure for the length of the suspension bolts.
Paper pattern
Ceiling
Suspension bolt
25 mm or mor
e
45 mm or less
Hanging plate
Air supply
<
When installed against a ceiling material,
>
※
Please fasten firmly with double nuts.
Hanging plate
Unit
Suspension bolt
Ceiling surface
Washer
(accessory)
※
Double nuts
<
No ceiling material to install against,
>
Hanging plate
Unit
Suspension bolt
Nut
Washer
(accessory)
※
Double nuts
Fasten
at the
front
end of
an
elon-
gated
hole.
Hanging plate
Screw for
hanging
plate (M4)
Fixing bolts
(M8)
0~3mm
0~3mm
(For left-side drain
connection, give the
reverse slope.)
(downwards)
(horizontal)
the position of the louver
Lower
position
Movable
range
Upper
position
2•4•6•8
1
10
3•5•7•9
⑤
Installation of indoor unit
5. Fasten the hanging plate onto the suspension bolts.
6. Install the unit to the hanging plate.
(1)
Slide the unit in from front side to get it
hanged on the hanging plate with the bolts.
(2) Fasten the four fixing bolts (M8: 2
each on the left and right sides) firmly.
(3) Fasten the two screws (M4: 1 each on
the left and right sides).
WARNINIG
: Hang a side panel on from the
panel side to the rear side and
then fasten it securely onto
the indoor unit with screws.
※
To ensure smooth drain flow, install the unit with
a descending slope toward the drain outlet.
CAUTION
: Do not give the reversed slope, which may cause water leaks.
⑥
Refrigerant pipe
⑪
How to set the airflow direction
It is possible to change the movable range of the louver on the air outlet from
the wired remote control. Once the top and bottom position is set, the louver
will swing within the range between the top and the bottom when swing
operation is chosen. It is also possible to apply different setting to each louver.
1. Stop the air-conditioner and press SET button and
LOUVER button simultaneously for three seconds or
more.
The following is displayed if the number of the indoor units
connected to the remote control is one. Go to step 4.
The following is displayed if the number of the indoor units
connected to the remote control are more than one.
2. Press
or
button.(selection of indoor unit)
Select the indoor unit of which the louver is set.
3. Press SET button.(determination of indoor unit) Selected indoor unit is fixed.
4. Press or button.(selection of louver No.)
Select the louver No. to be set
according to the right figure.
5. Press SET button.(Determination of louver No.)
The louver No. to be set is confirmed and the display shows the upper
limit of the movable range.
6. Press
or
button.(selection of upper limit position)
Select the upper limit of louver movable range.
“position 1” is the most horizontal, and “position 6” is the most downward.
“position --” is to return to the factory setting.
If you need to change the setting to the default
setting, use “position --”.
7. Press SET button.(Fixing of the upper limit position)
The upper limit position is fixed and the setting position is displayed for
two seconds. Then proceed to lower limit position selection display.
8. Press
or
button.(Selection of lower limit position)
Select the lower limit position of louver.
“position 1” is the most horizontal, and “position 6 ”is the most downwards.
“position --” is to return to the factory setting. If you need to change
the setting to the default setting, use “position --”.
9. Press SET button.(Fixing of the lower limit position)
Upper limit position and lower limit position are fixed, and the set
positions are displayed for two seconds, then setting is completed.
•
After the setting is completed, the louver which was
set moves from the original position to the lower
limit position, and goes back to the original position
again. (This operation is not performed if the indoor
unit and/or indoor unit fan is in operation.)
10.Press button.
Louver adjusting mode ends and returns to the original display.
When plural remote controls are connected, louver setting operation cannot
be set by slave remote control.
“
”
“
”
“
”
“
”
[EXAMPLE]
“
” (displayed for two seconds)
“
”
“
”
[EXAMPLE] If No.1 louver is selected,
“
”
←
current upper limit position
“
” (the most horizotal)
⇔
“
”
⇔
“
”
⇔
“
”
⇔
“
”
⇔
“
” (the most downwards)
⇔
“
” (return to the default setting)
[EXAMPLE]
“
”
⇔
“
”
⇔
“
”
⇔
“
”
(the most horizontal)
(the most downwards)
(return to the default setting)
[EXAMPLE]
(shows current setting)
(displayed for two seconds)
Caution
If the upper limit position number and the lower limit position number are set to the same
position, the louver is fixed at that position auto swing does not funtion.
ATTENTION
If you press RESET button during settings, the display will return to previous display.If you press
button during settings, the mode will be ended and return to original display, and the settings that have not been
completed will become invalid.
[EXAMPLE]
“
”
⇔
“
”
⇔
“
”
”
⇔
“
[Example]
(displayed for two seconds)
●
Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product
or a nut compatible with JIS B 8607, Class 2.
Regarding whether existing pipes can be reused or not, and the washing method, refer to the instruction manual of the
outdoor unit, catalogue or technical data.
1) In case of reuse: Do not use old flare nut, but use the one attached to the unit or compatible with JIS B 8607, Class 2.
2) In case of reuse: Flare the end of pipe replaced partially for R410A.
●
Use phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrigeration pipe installation.
In addition, make sure there is no damage both inside and outside of the pipe, and no harmful
substances such as sulfur, oxide, dust or a contaminant stuck on the pipes.
●
Do not use any refrigerant other than R410A.
Using other refrigerant except R410A (R22 etc.) may degrade inside refrigeration oil. And air getting into
refrigeration circuit may cause over-pressure and resultant it may result in bursting, etc.
●
Store the copper pipes indoors and seal the both end of them until they are brazed in order to avoid any dust, dirt or
water getting into pipe. Otherwise it will cause degradation of refrigeration oil and compressor breakdown, etc.
●
Use special tools for R410A refrigerant.
Caution
D
Protruding
dimension
Flare die
d
mm
6.35
9.52
12.7
15.88
19.05
For R410A Conventional tool
Pipe dia.
Min. pipe
wall thickness
Protruding dimension for flare, mm
Rigid (Clutch type)
Flare O.D.
Flare nut
tightening torque
0
～
0.5
0.7
～
1.3
D
mm
8.9
～
9.1
12.8
～
13.2
16.2
～
16.6
19.3
～
19.7
23.6
～
24.0
N·m
14
～
18
34
～
42
49
～
61
68
～
82
100
～
120
mm
0.8
0.8
0.8
1
1.2
1. Remove the flare nut and blind flanges on the pipe of the indoor unit.
※
Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the
nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.
(Gas may come out at this time, but it is not abnormal.)
●
Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.)
2. Make a flare on liquid pipe and gas pipe, and connect the refrigeration pipes on the indoor unit.
※
Bend radius of pipe must be 4D or larger. Once a pipe is bent, do not readjust the bending.
Do not twist a pipe or collapse to 2/3D or smaller.
※
Do a flare connection as follows:
●
Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving
torque to the nut with another spanner in order to avoid unexpected stress to the copper
pipe, and then remove them.
●
When fastening the flare nut, align the refrigeration pipe with the center of flare nut, screw
the nut for 3-4 times by hand and then tighten it by spanner with the specified torque
mentioned in the table above. Make sure to hold the pipe on the indoor unit securely by a
spanner when tightening the nut in order to avoid unexpected stress on the copper pipe.
3. Cover the flare connection part of the indoor unit with attached insulation material after a gas
leakage inspection, and tighten both ends with attached straps.
●
Make sure to insulate both gas pipes and liquid pipes completely.
※
Incomplete insulation may cause dew condensation or water dropping.
●
Use heat-resistant (120 °C or more) insulations on the gas side pipes.
●
In case of using at high humidity condition, reinforce insulation of refrigerant pipes.
Surface of insulation may cause dew condition or water dropping, if insulations are not reinfoced.
Work procedure
PFA012D621D
B
Bracket
Pipe
Remove
Cut
Drain
socket
Heat insulation material
Drain hose (accessory) VP20
(prepare on site)
Clamp (accessory)
To be a descending
angle
No bumps
No traps
Not to be in water
Drain hose
Lowest point
Hose clamp
It can be attached
from both inside and
outside the unit.
10mm
⑦
Drain pipe
Work procedure
1. Insert drain hose completely to the base,
and tighten the drain hose clamp securely.
( adhesive must not be used.)
※
When plumbing on the left side, move the
rubber plug and the cylindrical insulating
materials by the pipe connecting hole on the
left side of the unit to the right side.
Beware of a possible outflow of water that may
occur upon removal of a drain plug.
2. Fix the drain hose at the lowest point with a
hose clamp supplied as an accessory.
※
Give a drain hose a gradient of 10mm as
illustrated in the right drawing by laying
it without leaving a slack.
Take head of electrical cables so that they may not run beneath the drain hose.
A drain hose must be clamped down with a hose clamp.
There is a possibility that drain water overflows.
3. Connect VP20(prepare on site) to drain hose. (adhesive must not be used.)
※
Use commercially available rigid PVC general pipe VP20 for drain pipe.
4. Do not to make the up-down bending and trap in the mid-way while assum-
ing that the drain pipes is downhill. (more than 1/100)
Never set up air vent.
5. Insulate the drain pipe.
Insulate the drain hose clamp with the heat insulation supplied as accessories.
When the unit is installed in a humid place, consider precautions against
dew condensation such as heat insulation for the drain pipe.
The drain pipes may face out towards the back to the left, or to the right side.
Caution
Install the drain pipe according to the installation manual in order to drain properly.
Imperfection in draining may cause flood indoors and wetting the household 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 exchanger and bad smell.
Connect the pipe securely to avoid water leakage from the joint.
Insulate the pipe properly to avoid condensation 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 installation.
Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap
in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained out properly
from the pipe during commissioning. Also, keep sufficient space for inspection and maintenance.
The pipe can be connected from three different directions. (back, reight, top)
⑥
Refrigerant pipe (continued)
When the pipe is routed through the back.
If the bracket is removed, piping work will become easy.
※
After piping, reinstall the removed bracket.
When the pipe is routed through the back.
Cut the removed top cover, and install to
the rear panel instead of rear cover.
4. Refrigerant is charged in the outdoor unit.
As for the additional refrigerant charge for the indoor unit and piping, refer to the installation
manual attached to the outdoor unit.
<
The case of using thicness of insulation is 10mm
>
<
The case of using reinfoced insulation
>
Pipe cover (Accessory)
Unit
Unit
Band
(Accessory)
Band
(Prepare on site)
Insulation (Prepare on site)
Pipe cover (Prepare on site)
Band
(Accessory)
The thckness of insulation is 10mm
Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It
is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction
force on the threads and increase, in turn, the axial component force so that it could crack the flare
by the stress corrosion.
Refrigerating machine oil may be applied to the internal surface of flare only.
Caution:
Chain
Chain
Chain
Fix with screws
⑩
Check list after installation
Check if
Expected trouble
Check
The indoor and outdoor units are fixed securely? Falling, vibration, noise
Inspection for leakage is done?
Insufficient capacity
Insulation work is properly done?
Water leakage
Water is drained properly?
Water leakage
Power source voltage is same as mentioned in the model name plate? PCB burnt out, not working at all
There is mis-wiring or mis-connection of piping? PCB burnt out, not working at all
Earth wiring is connected properly?
Electric shock
Cable size comply with specified size?
PCB burnt out, not working at all
Any obstacle blocks airflow on air inlet and outlet? Insufficient capacity
Check the following items after all installation work completed.
⑦
Drain pipe (continued)
Drain test
After installation of drain pipe, make sure that drain system work in good
condition and no water leakage from joint and drain pan.
Do drain test even if installation of heating season.
⑨
Attaching the air return grille
The air return grille must be attached when electrical cabling work is completed.
1. Fix the chains tied to the air return
grille onto the indoor unit with screws
supplied as accessories (4 pieces).
2. Close the air return grille.
This completes the unit installtion
work.
⑧
Wiring-out position and wiring connection
Electrical installation work must be performed according to the installation
manual by an electrical installation service provider qualified by a power
provider of the country, and be executed according to the technical standards
and other regulations applicable to electrical installation in the country.
Be sure to use an exclusive circuit.
Use specified cord, fasten the wiring to the terminal securely, and hold the
cord securely in order not to apply unexpected stress on the terminal.
Do not put both power source line and signal line on the same route. It may
cause miscommunication and malfunction.
Be sure to do D type earth work.
For the details of electrical wiring work, see attached instruction manual for
electrical wiring work.
1. Remove a lid of the electrical box (2 screws).
2. Hold each wiring inside the unit and connect to a terminal block surely.
3. Fix the wiring by clamps.
4. Install the removed parts back to original place.
Single split (PAC) series
VRF(KX) series
Main fuse specification
Specification
T3.15A L250V
Port No.
SSA564A116G
Remote control
line
Power source
side terminal
block
Power source
side terminal
block
Earth
Earth
Wiring clamp
Wiring clamp
Remote control line
Wiring between indoor
and outdoor unit
Signal side
terminal block
Wireless
receiver line
Signal side
terminal block
Wireless
receiver line
Signal line
(shielded cord)
Indoor power
source line
Main fuse
Main fuse
