-
137
-
①
Before installation
③
Preparation before installation (continued)
②
Selection of installation location for the indoor unit
Accessory item
③
Preparation before installation
●
If suspension bolt becomes longer, do reinforcement of earthquake resistant.
○
For grid ceiling
When suspension bolt length is over 500mm, or the gap between the ceiling and roof is
over 700mm, apply earthquake resistant brace to the bolt.
○
In case the unit is hanged directly from the slab and is installed on the ceiling plane which
has enough strength.
When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt.
●
Prepare four (4) sets of suspension bolt, nut and spring washer (M10) on site.
●
If placing the unit with the top plate facing up (in the reversed orientation of packaging) is
unavoidable, use care so that the area other than supporting member of the unit, will not be
subjected to excessive loads. (A heavy load on the central part of this area could cause a
damage to the filter).
This manual is for the installation of an indoor unit.
For electrical wiring work (Indoor), refer to the electrical wiring work installation manual. For remote
controller installation, refer to the installation manual attached to a remote controller. For wireless kit
installation, refer to the installation manual attached to a wireless kit. For electrical wiring work
(Outdoor) and refrigerant pipe work installation for outdoor unit, refer to the installation manual
attached to an outdoor unit.
This unit must always be used with the panel.
Ceiling opening, Suspension bolts pitch, Pipe position
④
Installation of indoor unit
Work procedure
1. Cut an installation opening in the ceiling to the measurements specified for ceiling
opening.
2. Set the suspension bolts in place.
※
The suspension bolts pitch center do not match the panel center.
3. Make sure to use four suspension bolts and fix them so as to be able to hold 500N load.
4. Ensure that the lower end of the suspension bolt should be 50mm above the ceiling
plane. Temporarily put the four lower nuts 150mm above the ceiling plane and the upper
nuts on distant place from the lower nuts in order not to obstruct hanging the indoor unit
or adjust the indoor unit position, and then hang the indoor unit.
5. Adjust the indoor unit position after hanging it by inserting the level gauge attached on
the package into the air supply port and checking if the gap between the ceiling plane
and the indoor unit is appropriate. In order to adjust the indoor unit position, adjust the
lower nuts while the upper nuts are put on distant place. Confirm there is no backlash
between the hanger plate for suspension bolt and the lower nut and washer.
For unit hanging
For refrigerant pipe
Flat washer (M10)
Paper pattern
Pipe cover(big) Pipe cover (small)
Strap
4
1
1
1
4
For unit hanging
For heat insulation
of gas pipe
For heat insulation
of liquid tube
For pipe cover fixing
For unit hanging and adjustment
67 70
UNIT BOTTOM
UNIT BOTTOM
FIT THIS NOTCH TO CEILING LEVEL
UNIT BOTTOM
FIT THIS NOTCH
TO CEILING
LEVEL
INSERT THIS SLOT
INTO HANGING
FIXTURE
HOW TO USE
THIS PATTERN
INSERT THIS SLOT
INTO HANGING FIXTURE
FIT THIS NOTCH TO CEILING LEVEL
Drain hose
Hose clamp
1
1
For drain hose
mounting
For drain pipe
connecting
For drain pipe
Pipe cover(big)
Pipe cover(small)
1
1
For heat insulation
of drain socket
For heat insulation
of drain socket
For wiring fixing
Flat washer (M4)
Nut (M4)
Bolt (M4)
1
1
1
Air supply
Decorative panel
Air return
360
160
45
160
680
965
45
1055
Touch the nut (lower) and
washer without any play
Unit
Correct
Unit
Wrong
Play is left between the fixture
and the nut (lower) and washer.
Suspension bolt
Nut (upper)
Flat washer
Spring wasler
95mm
150mm
Nut (lower)
Ceiling surface
Adjust height to fit this notch
to ceiling level.
Ceiling surface
67
Paper pattern
6. Make sure to install the indoor unit horizontally. Confirm the levelness of
the indoor unit with a level gauge or transparent hose filled with water.
Keep the height difference at both ends of the indoor unit within 3mm.
7. Tighten four upper nuts and fix the unit after height and
levelness adjustment.
Caution
●
Do not adjust the height by adjusting upper nuts. It will cause unexpected stress on the indoor unit and
it will lead to deformation of the unit, failure of attaching a panel, and generating noise from the fan.
●
Make sure to install the indoor unit horizontally and set the gap between the unit underside and the ceiling plane
properly. Improper installation may cause air leakage, dew condensation, water leakage and noise.
●
Even after decorative panel attached, still the unit height can be adjusted finely. Refer to the
installation manual for decorative panel for details.
Indoor unit
Hose
Center of
box
Drain hose piece
(Accessory)
(Installed on site)
panel
Control
97
446
90
97
640
40
(Suspension bolts pitch)
(Ceiling hole size)
(Suspension bolts pitch)
(Ceiling hole size)
Hanger plate for
E
F
5-Ø4
Holes for
tapping screws
Hole
suspension bolt
95
64
278
264
310
D
B
A
230
310
364
405
620
10
20
20
10
C
1
2
C
8-Ø4
G
Holes for
tapping screws
Hole
Hole
295~
325
8
750
100
140
240
200
20
240
200
Unit undersurface
67
(Max. Drain lift)
or less
20
①
Select the suitable areas to install the unit under approval of the user.
・
Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user
to use a circulator if the ceiling height is over 3m to avoid warm air being accumulated on
the ceiling.
・
Areas where there is enough space to install and service.
・
Areas where it can be drained properly. Areas where drain pipe descending slope can be
taken.
・
Areas where there is no obstruction of airflow on both air return grille and air supply port.
・
Areas where fire alarm will not be accidentally activated by the air conditioner.
・
Areas where the supply air does not short-circuit.
・
Areas where it is not influenced by draft air.
・
Areas not exposed to direct sunlight.
・
Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.
This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humid-
ity condition and confirmed there is no problem. However, there is some risk of condensa-
tion drop if the air conditioner is operated under the severer condition than mentioned
above.
If there is a possibility to use it under such a condition, attach additional insulation of 10 to
20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe.
・
Areas where TV and radio stays away more than 1m. (It could cause jamming and noise.)
・
Areas where any items which will be damaged by getting wet are not placed such as food,
table wares, server, or medical equipment under the unit.
・
Areas where there is no influence by the heat which cookware generates.
・
Areas where not exposed to oil mist, powder and/or steam directly such as above fryer.
・
Areas where lighting device such as fluorescent light or incandescent light doesn’t affect
the operation.
(A beam from lighting device sometimes affects the infrared receiver for the wireless remote
controller and the air conditioner might not work properly.)
②
Check if the place where the air conditioner is installed can hold the weight of the unit. If it is
not able to hold, reinforce the structure with boards and beams strong enough to hold it. If the
strength is not enough, it could cause injury due to unit falling.
③
When plural indoor units are installed nearby, keep them away for more than 4 to 5m.
Space for installation and service
●
Install the indoor unit at a height of more than 2.5m above the floor.
INSTALLATION MANUAL FOR CEILING CASSETTE
-2WAY- TYPE (FDTW)
●
Install correctly according to the installation manual.
●
Confirm the following points:
○
Unit type/Power supply specification
○
Pipes/Wires/Small parts
○
Accessory items
28 ~ 56
112, 140
1015
885
468
417
817
460
178
161
287
214
405
155
1730
1600
825
775
1524
240
672
255
357
241
410
170
71, 90
Type
1260
1130
590
540
1054
460
382
240
342
226
410
155
1
2
3
4
5
6
7
8
9
10
11
12
28 ~ 56
112, 140
234
98
91
47
127
56
74
124
130
70
60
299
110
103
50
137
66
78
128
-
80.5
70
71, 90
Type
UNIT: mm
284
95
88
50
127
66
78
128
-
82.5
65
13
14
15
16
17
19
20
21
22
23
18
Symbol
Gas piping
A
Liquid piping
B
Drain piping
C1
Drain piping (Gravity drainage)
C2
Hole for wiring
D
Suspension bolts
E
Outside air opening for ducting
F
Air outlet opening for ducting
G
Indoor unit
Indoor unit
1500mm
or more
Indoor unit
Wall
Wall
Ceiling
surface
Decorative
panel
100mm
or more
1000mm
or more
4000 to 5000mm or more
Obstacle
PJB012D227
A
●
Read the “SAFETY PRECAUTIONS” carefully first of all and then strictly follow it during the installation work
in order to protect yourself.
●
The precautionary items mentioned below are distinguished into two levels, and .
: Wrong installation would cause serious consequences such as injuries or death.
: Wrong installation might cause serious consequences depending on circumstances.
Both mentions the important items to protect your health and safety so strictly follow them by any means.
●
After completing the installation, do commissioning to confirm there are no abnormalities, and explain to the
customers about “SAFETY PRECAUTIONS”, correct operation method and maintenance method (air filter
cleaning, operation method and temperature setting method) with user’s manual of this unit.
Ask your customers to keep this installation manual together with the user’s manual. Also, ask them to hand
over the user’s manual to the new user when the owner is changed.
CAUTION
CAUTION
●
Installation should be performed by the specialist.
If you install the unit by yourself, it may lead to serious trouble such as water leakage, electric shock, fire, and injury due to overturn
of the unit.
●
Install the system correctly according to these installation manuals.
Improper installation may cause explosion, injury, water leakage, electric shock, and fire.
●
Consider measurement not to exceed the limit of the density of refrigerant in the event of leakage especially
when it is installed in a small room.
Consult the specialist about the measure. If the density of refrigerant exceeds the limit in the event of the leakage, serious accidents
may occur due to lack of oxygen.
●
Use the genuine accessories and the specified parts for installation.
If parts unspecified by our company are used it could cause water leakage, electric shock, fire, and injury due to overturn of the unit.
●
Ventilate the working area well in case the refrigerant leaks during installation.
If the refrigerant contacts the fire, toxic gas is produced.
●
Install the unit in a location that can hold heavy weight.
Improper installation may cause the unit to fall leading to accidents.
●
Install the unit properly in order to be able to withstand strong winds such as typhoons, and earthquakes.
Improper installation may cause the unit to fall leading to accidents.
●
Do not mix air in to the cooling cycle on installation or removal of the air conditioner.
If air is mixed in, the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries.
●
Be sure to have the electrical wiring work done by qualified electrical installer, and use exclusive circuit.
Power source with insufficient capacity and improper work can cause electric shock and fire.
●
Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the cable securely in
order not to apply unexpected stress on the terminal.
Loose connections or hold could result in abnormal heat generation or fire.
●
Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid of the services
panel property.
Improper fitting may cause abnormal heat and fire.
●
Check for refrigerant gas leakage after installation is completed.
If the refrigerant gas leaks into the house and comes in contact with a fan heater, a stove, or an oven, toxic gas is produced.
●
Use the specified pipe, flare nut, and tools for R410A.
Using existing parts (R22) could cause the unit failure and serious accident due to explosion of the cooling cycle.
●
Tighten the flare nut according to the specified method by with torque wrench.
If the flare nut were tightened with excess torque, it could cause burst and refrigerant leakage after a long period.
●
Make sure there is no dust or clogging on both the plug and the socket nor loose connection of the socket
before plugging, and plug in securely to the end of the blade.
Accumulation of dust, clogging on the socket or plug, or loose installation of the socket could cause electric shock and fire. Replace
the socket if it is loose.
●
Connect the pipes for refrigeration circuit securely in installation work before compressor is operated.
If the compressor is operated when the service valve is open without connecting the pipe, it could cause explosion and injuries due
to abnormal high pressure in the system.
●
Stop the compressor before removing the pipe on pump down work.
If the pipe is removed when the compressor is in operation with the service valve open, air would be mixed in the refrigeration
circuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle.
●
Use the genuine optional parts. And installation should be performed by a specialist.
If you install the unit by yourself, it could cause water leakage, electric shock and fire.
●
Do not repair by yourself. And consult with the dealer about repair.
Improper repair may cause water leakage, electric shock or fire.
●
Consult the dealer or a specialist about removal of the air conditioner.
Improper installation may cause water leakage, electric shock or fire.
●
Turn off the power source during servicing or inspection work.
If the power is supplied during servicing or inspection work, it could cause electric shock and injury by the operating fan.
●
Do not run the unit when the panel or protection guard are taken off.
Touching the rotating equipment, hot surface, or high voltage section could cause an injury to be caught in the machine, to get
burned, or electric shock.
●
Shut off the power before electrical wiring work.
It could cause electric shock, unit failure and improper running.
●
Perform earth wiring surely.
Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could
cause unit failure and electric shock due to a short circuit.
●
Use the circuit breaker of correct capacity.
Using the incorrect capacity one could cause the system failure and fire.
●
Do not use any materials other than a fuse of correct capacity where a fuse should be used.
Connecting the circuit by wire or copper wire could cause unit failure and fire.
●
Do not install the indoor unit near the location where there is possibility of flammable gas leakages.
If the gas leaks and gathers around the unit, it could cause fire.
●
Do not install and use the unit where corrosive gas (such as sulfurous acid gas etc.) or flammable gas
(such as thinner, petroleum etc.) may be generated or accumulated, or volatile flammable substances
are handled.
It could cause the corrosion of heat exchanger, breakage of plastic parts etc. And inflammable gas could cause fire.
●
Do not use the indoor unit at the place where water splashes such as laundry.
Indoor unit is not waterproof. It could cause electric shock and fire.
●
Do not use the indoor unit for a special purpose such as food storage, cooling for precision
instrument, preservation of animals, plants, and a work of art.
It could cause the damage of the items.
●
Do not install nor use the system near equipments which generate electromagnetic wave or high
harmonics.
Equipments like inverter equipment, private power generator, high-frequency medical equipment, or telecommunication
equipment might influence the air conditioner and cause a malfunction and breakdown. Or the air conditioner might
influence medical equipments or telecommunication equipments, and obstruct their medical activity or cause jamming.
●
Do not install the remote controller at the direct sunlight.
It could cause breakdown or deformation of the remote controller.
●
Do not install the indoor unit at the place listed below.
· Places where flammable gas could leak.
· Places where carbon fiber, metal powder or any powder is floated.
· Place where the substances which affect the air conditioner are generated such as sulfide gas, chloride gas, acid or
alkali.
· Places exposed to oil mist or steam directly.
· On vehicles and ships
· Places where machinery which generates high harmonics is used.
· Places where cosmetics or special sprays are frequently used.
· Highly salted area such as beach.
· Heavy snow area
· Places where the system is affected by smoke from a chimney.
· Altitude over 1000m
●
Do not put any valuables which will break down by getting wet under the air conditioner.
Condensation could drop when the relative humidity is higher than 80% or drain pipe is clogged, and it damages user’s
belongings.
●
Do not use the base frame for the outdoor unit which is corroded or damaged after a long period of
use.
It could cause the unit falling down and injury.
●
Pay attention not to damage the drain pan by weld sputter when brazing work is done near the unit.
If sputter entered into the unit during brazing work, it could cause damage (pinhole) of drain pan and leakage of water. To
avoid damaging, keep the indoor unit packed or cover the indoor unit.
●
Install the drain pipe to drain the water surely according to the installation manual.
Improper connection of the drain pipe may cause dropping water into room and damaging user’s belongings.
●
Do not put the drain pipe directly into the ditch where toxic gas such as sulfide gas is generated.
Toxic gas would flow into the room and it would cause serious damage to user’s health and safety.
●
Do not share the drain pipe for indoor unit and GHP (Gas Heat Pump system) outdoor unit.
Toxic exhaust gas would flow into room and it might cause serious damage (some poisoning or deficiency of oxygen) to
user’s health and safety.
●
For drain pipe installation, be sure to make descending slope of greater than 1/100, not to make traps,
and not to make air-bleeding.
Check if the drainage is correctly done during commissioning and ensure the space for inspection and maintenance.
●
Ensure the insulation on the pipes for refrigeration circuit so as not to condense water.
Incomplete insulation could cause condensation and it would wet ceiling, floor, and any other valuables.
●
Do not install the outdoor unit where is likely to be a nest for insects and small animals.
Insects and small animals could come into the electronic components and cause breakdown and fire. Instruct the user to
keep the surroundings clean.
●
Pay extra attention, carrying the unit by hand.
Carry the unit with 2 people if it is heavier than 20kg. Do not use the plastic straps but the grabbing place, moving the unit
by hand. Use protective gloves in order to avoid injury by the aluminum fin.
●
Make sure to dispose of the packaging material.
Leaving the materials may cause injury as metals like nail and woods are used in the package.
●
Do not operate the system without the air filter.
It may cause the breakdown of the system due to clogging of the heat exchanger.
●
Do not touch any button with wet hands.
It could cause electric shock.
●
Do not touch the refrigerant piping with bare hands when in operation.
The pipe during operation would become very hot or cold according to the operating condition, and it could cause a burn
or frostbite.
●
Do not clean up the air conditioner with water.
It could cause electric shock.
●
Do not turn off the power source immediately after stopping the operation.
Be sure to wait for more than 5 minutes. Otherwise it could cause water leakage or breakdown.
●
Do not control the operation with the circuit breaker.
It could cause fire or water leakage. In addition, the fan may start operation unexpectedly and it may cause injury.
WARNING
CAUTION
SAFETY PRECAUTIONS
PJB012D227
(C) Ceiling cassette-2way type (FDTW)
a
Summary of Contents for 112KXE6
Page 105: ... 101 Model FDC335KXE6 A PCB003Z035 shows local wining ...
Page 134: ... 130 PJF012D003 ...
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Page 139: ... 135 PJA012D751 b ...
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Page 206: ... 202 2 model type DIS model type HEAD ...
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