INSTALLATION
MANUAL
R410A Split Series
Models
FTYN25GXV1B
FTYN35GXV1B
Installation manual
R410A Split series
Installationsanleitung
Split-Baureihe R410A
Manuel d’installation
Série split R410A
Montagehandleiding
R410A Split-systeem
Manual de instalación
Serie Split R410A
Manuale d’installazione
Serie Multiambienti R410A
Εγχειρßδιο εγκατÜστασηò
διαιροýìενηò σειρÜò R410A
English
Deutsch
Français
Nederlands
Español
Italiano
ΕλληνικÜ
Manual de Instalação
Série split R410A
Рóêоводство по монтажó
Серия R410A с раздельной óстановêой
Montaj kýlavuzlarý
R410A Split serisi
Portugues
Рóссêий
Türkçe
*
19 Opomba *
20 Märkus *
10 Bemærk *
11 Information *
Забележка
21
22 Pastaba *
12 Merk *
13 Huom *
23 Piez mes *
24 Poznámka *
14 Poznámka *
15 Napomena *
25 Not *
16 Megjegyzés *
17 Uwaga *
18 Nota *
Umeda Center Bldg., 2- 4-12, Nakazaki-Nishi
Kita-ku, Osaka, 530-8323 Japan
Noboru Murata
Manager Quality Control Department
Shiga, 1st of Nov. 2007
*
*
УзмеЯщуз
DAIKIN INDUSTRIES, LTD.
FTYN25GXV1B, FTYN35GXV1B,
RYN25GXV1B, RYN35GXV1B
01 Note *
02 Hinweis *
03 Remarque *
04 Bemerk *
05 Nota *
06 Nota *
07
Пpимечание
08 Nota *
09
3SB64204-1A
Safety Precautions
• Read these Safety Precautions carefully to ensure correct installation.
• This manual classifies the precautions into WARNING and CAUTION.
Be sure to follow all the precautions below: they are all important for ensuring safety.
WARNING
CAUTION .............. Failure to follow any of CAUTION may in some cases result in grave consequences.
...............Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
• The following safety symbols are used throughout this manual:
Be sure to observe this instruction. Be sure to establish an earth connection. Never attempt.
• After completing installation, test the unit to check for installation errors. Give the user adequate instructions concerning the use
and cleaning of the unit according to the Operation Manual.
WARNING
• Installation should be left to the dealer or another professional.
Improper installation may cause water leakage, electrical shock, or fire.
• Install the air conditioner according to the instructions given in this manual.
Incomplete installation may cause water leakage, electrical shock, or fire.
• Be sure to use the supplied or specified installation parts.
Use of other parts may cause the unit to come to lose, water leakage, electrical shock, or fire.
• Install the air conditioner on a solid base that can support the unit’s weight.
An inadequate base or incomplete installation may cause injury in the event the unit falls off the base.
• Electrical work should be carried out in accordance with the installation manual and the national electrical wiring
rules or code of practice.
Insufficient capacity or incomplete electrical work may cause electrical shock or fire.
• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
• For wiring, use a cable long enough to cover the entire distance with no connection.
Do not use an extension cord. Do not put other loads on the power supply, use a dedicated power circuit.
(Failure to do so may cause abnormal heat, electric shock or fire.)
• Use the specified types of wires for electrical connections between the indoor and outdoor units.
Firmly clamp the interconnecting wires so their terminals receive no external stresses. Incomplete connections or clamping may cause terminal overheating or fire.
• After connecting interconnecting and supply wiring be sure to shape the cables so that they do not put undue force
on the electrical covers or panels.
Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, or fire.
• If any refrigerant has leaked out during the installation work, ventilate the room.
(The refrigerant produces a toxic gas if exposed to flames.)
• After all installation is complete, check to make sure that no refrigerant is leaking out.
(The refrigerant produces a toxic gas if exposed to flames.)
• When installing or relocating the system, be sure to keep the refrigerant circuit free from substances other than the
specified refrigerant (R410A), such as air.
(Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture, resulting in injury.)
• During pump-down, stop the compressor before removing the refrigerant piping.
If the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the refrigerant piping is removed,
causing abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• During installation, attach the refrigerant piping securely before running the compressor.
If the compressor is not attached and the stop valve is open during pump-down, air will be sucked in when the compressor is run, causing
abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• Be sure to establish an earth. Do not earth the unit to a utility pipe, arrester, or telephone earth.
Incomplete earth may cause electrical shock, or fire. A high surge current from lightning or other sources may cause damage to the air conditioner.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks, or fire.
CAUTION
• Do not install the air conditioner in a place where there is danger of exposure to inflammable gas leakage.
If the gas leaks and builds up around the unit, it may catch fire.
• Establish drain piping according to the instructions of this manual.
Inadequate piping may cause flooding.
• Tighten the flare nut according to the specified method such as with a torque wrench.
If the flare nut is tightened too hard, the flare nut may crack after a long time and cause refrigerant leakage.
• Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals.
Small animals making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area around
the unit clean.
■English 1
Accessories
Mounting plate
A
Refrigerant charge label
B
*1 The thermistor cable is attached to the indoor unit.
– ,
A K
Outdoor unit
1
1
L
Air-Purifying Filter with
C
bacteriostatic, virustatic function
Wireless remote controller
D J
Remote controller holder
E K
AAA dry-cell batteries
F L
Choosing a Site
• Before choosing the installation site, obtain user approval.
The indoor unit should be sited in a place where:
• the restrictions on installation specified in the
indoor unit installation drawings are met,
•
both air intake and exhaust have clear paths met,
• the unit is not in the path of direct sunlight,
•
the unit is away from the source of heat or steam,
• there is no source of machine oil vapour (this
may shorten indoor unit life),
• cool (heat) air is circulated throughout the room,
•
the unit is away from electronic ignition type fluorescent lamps (inverter
or rapid start type) as they may shorten the remote control range,
•
the unit is at least 1 metre away from any television or radio
set (unit may cause interference with the picture or sound).
Outdoor unit
The outdoor unit should be sited in a place where:
•
the restrictions on installation specified in the outdoor unit installation diagram are met,
• drain water causes no trouble or problem in particular,
•
both air intake and exhaust have clear paths of air (they should be free of snow in snowy districts),
•
the unit is in a clear path of air but not directly exposed to rain, strong winds, or direct sunlight,
• there is no fear of inflammable gas leakage,
•
the unit is no directly exposed to salt, sulfidized gases, or machine oil vapour (they may shorten outdoor unit life),
• operation noise or hot air flow does not cause trouble to neighbours,
• the unit is at least 3 metres away from any television or radio antenna.
•
Turn on all the fluorescent lamps in the room, if any, and find the site where remote
controller signals are properly received by the indoor unit (within 7 metres).
Indoor unit fixing screw M4 × 12L
G
2
Thermistor cable (8m)*1
H
1
1
2
Operation manual
Installation manual
Drain plug
2
1
1
1
1
Installation Tips
Removing and installing front panel.
1.
• Removal method
1) Place your fingers in the indentations on the main unit (one each on the left
and right sides), and open the panel until it stops.
2)
Continue to open the front panel further while sliding the panel to the right and pulling it
toward you in order to disengage the rotating shaft on the left side. To disengage the rotating
shaft on the right side, slide the panel to the left while pulling it toward you.
• Installation method
Align the tabs of the front panel with the grooves, and push all the way in. Then close
slowly. Push the center of the lower surface of the panel firmly to engage the tabs.
Removing and installing front grille.
2.
¡¡¡
• Removal method
1) Remove front panel to remove the air filter.
2) Remove the screws (2) from the front grille.
3) In front of the {{{ mark of the front grille, there are 3
upper hooks. Lightly pull the front grille toward you with one
hand, and push down on the hooks with the fingers of your other hand.
Upper hook
mark area
(3 locations)
When there is no work space because the unit is close to ceiling
CAUTION
Be sure to wear protection gloves.
Push the rotating
shaft of the front
panel into the groove.
Rotating shaft
Lightly pull the
front grille
toward you with
one hand, and
push down on
the hooks with
the fingers of
your other hand.
(3 locations)
Push
down.
Indentations on
the main unit
Upper hook
Upper hook
Place both hands under the center of the front grille, and while pushing up, pull it toward you.
1) Push up.
• Installation method
1) Install the front grille and firmly engage the upper hooks (3 locations).
2) Install 2screws of the front grille.
3) Install the air filter and then mount the front panel.
2) Pull toward you.
2 ■English
Indoor/Outdoor Unit Installation Drawings
A Mounting plate
Mounting plate
fixing screw
(Field supply: M4 × 25L)
Front panel
50mm or more from walls
(on both sides)
Air filter
C
Air-Purifying Filter with bacteriostatic,
virustatic function (2)
Air-Purifying Filter
with bacteriostatic,
virustatic function
Filter frame
30mm or more from ceiling
M4 × 12L
Opening service lid
Service lid is opening/closing type.
Opening method
1) Remove the service lid screws.
2) Pull out the service lid diagonally
3) Pull down.
Air filter
How to attach the indoor unit.
Hook the claws of the bottom frame
to the mounting plate.
If the claws are difficult to hook,
remove the front grille.
How to remove the indoor unit.
Push up the marked area (at the
lower part of the front grille) to
release the claws. If it is difficult to
release, remove the front grille.
Service lid
down in the direction of the arrow.
A Mounting
plate
Clip
Front grille
Cut thermal insulation
Caulk
pipe hole
gap
with putty.
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe’s cut line.
Model
Min. allowable length
Max. allowable length
Additional charge of refrigerant
Max. allowable length without
additional charge
Max. allowable height
Liquid pipe
Be sure to add the proper amount of additional refrigerant.
*
Failure to do so may result in reduced perfomance.
Bottom frame
Wrap the insulation pipe with
the finishing tape from bottom
to top.
Gas pipe
Mark (rear side)
25 35
3m
15m
20g/m
10m
10m
O.D. 9.5mm O.D. 12.7mm
O.D. 6.4mm
Ta b
D
Wireless
remote
controller
E
Remote
controller
holder
Screws
(Field supply: M3 × 20L)
Before screwing
the remote
controller holder
to the wall, make
sure that control
signals are
properly received
by indoor unit.
(Foot bolt-hole centres)
In sites with poor drainage, use block
bases for outdoor unit. Adjust foot height
until the unit is leveled. Otherwise, water
leakage or pooling of water may occur.
574
105.5
(From unit’s side)
unit: mm
250mm from wall
311
Foot bolt-hole
centres
Allow space for piping
and electrical servicing.
Where there is a danger of the unit
falling, use foot bolts, or wires.
Stop valve cover
How to remove the stop
valve cover.
Remove the screw on the
stop valve cover.
Slide the lid downward
to remove it.
How to attach the stop
valve cover.
Insert the upper part of
the stop valve cover into the
outdoor unit to install.
Tighten the screws.
■English 3
Outdoor Unit Installation Guidelines
• Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines below.
Wall facing one side Walls facing two sides
More than 50 More than 100
More than 100
More
than 150
More than 50
Side view
Walls facing three sides
More
than 50
CAUTION
When operating the air conditioner in a low outdoor ambient temperature, be sure to follow the instructions described below.
1) To prevent exposure to wind, install the outdoor unit with its suction
side facing the wall.
2) Never install the outdoor unit at a site where the suction side may
be exposed directly to wind.
3) To prevent exposure to wind, it is recommended to install a baffle
plate on the air discharge side of the outdoor unit.
4) In heavy snowfall areas, select an installation site where the snow
will not affect the unit.
Top view
Top view
More than 150
More than 300
More than 50
Unit: mm
Construct a large canopy.
Construct a pedestal.
Install the unit high enough off the
ground to prevent burying in snow.
CAUTION
In the case of using a mount and installing the outdoor unit on the wall or
roof, attach vibration absorbers (e.g., vibration isolation rubbers and
springs) between the legs of the outdoor unit and the mount (4 portions).
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by
the Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type:
(1)
GWP
value: 1975
R410A
(1)
GWP = global warming potential
Please fill in with indelible ink,
1
n
the factory refrigerant charge of the product,
2
n
the additional refrigerant amount charged in the field and
1 + 2
n
the total refrigerant charge
on the refrigerant charge label supplied with the product.
The filled out label must be adhered in the
proximity of the product charging port (e.g.
onto the inside of the stop valve cover).
6
1 factory refrigerant charge of the
product:
see unit name plate
2 additional refrigerant amount
charged in the field
4
3 total refrigerant charge
1
4 Contains fluorinated greenhouse
gases covered by the Kyoto
Protocol
2
5 outdoor unit
3
6 refrigerant cylinder and manifold
5
for charging
4 ■English
Indoor Unit
Installing the mounting plate.
1.
• The mounting plate should be installed on a wall which can support the weight of the indoor unit.
1) Temporarily secure the mounting plate to the wall, make sure that the panel is completely level, and mark the boring
points on the wall.
2) Secure the mounting plate to the wall with screws.
Recommended mounting plate retention spots and Dimensions
Use tape measure
Recommended mounting
plate retention spots.
(5 spots in all)
166
as shown.
Position the end
of a tape measure
at .
184
42.245.9
288
54.5 153.8 181.7 55.5
Boring a wall hole and installing wall embedded pipe.
2.
263 51.9
Liquid pipe end Gas pipe end
800
• For walls containing metal frame or metal board, be sure to use a wall embedded pipe and wall cover in the feed-through hole to prevent possible heat,
electrical shock, or fire.
• Be sure to caulk the gaps around the pipes with caulking material to prevent
water leakage.
1) Bore a feed-through hole of 65mm in the wall so it has a down slope toward
the outside.
2) Insert a wall pipe into the hole.
3) Insert a wall cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping, caulk pipe hole
gap with putty.
Wall embedded pipe
(Field supply)
Wall hole cover
(Field supply)
42.245.9
Through the wall
hole φ65mm
Drain hose position
Inside Outside
Wall embedded pipe
(Field supply)
Caulking
φ65
■English 5
Indoor Unit
Installing indoor unit.
3.
3-1. Right-side, right-back, or right-bottom piping.
1) Attach the drain hose to the underside of the refrigerant pipes with
adhesive vinyl tape.
2) Wrap the refrigerant pipes and drain hose together with insulation
tape.
3) Pass the drain hose and refrigerant pipes through the wall hole,
then set the indoor unit on the mounting plate hooks by using the
markings at the top of the indoor unit as a guide.
4) Open the front panel, then open the service lid.
(Refer to Installation Tips)
Pass the interconnecting wires from the outdoor unit through the
5)
feed-through wall hole and then through the back of the indoor
unit. Pull them through the front side. Bend the ends of tie wires
upward in advance for easier work. (If the interconnecting wire
ends are to be stripped first, bundle wire ends with adhesive
tape.)
6) Press the indoor unit’s bottom panel with both hands to set it
on the mounting plate hooks. Make sure the wires do not catch
on the edge of the indoor unit.
Right-side piping
Remove pipe port cover
here for right-side piping
Hang indoor unit’s hook here.
When stripping the
ends of interconnecting
wires in advance, bind
right ends of wires with
insulating tape.
Right-bottom
piping
Remove pipe port cover
here for right-bottom piping
A
Mounting plate
Wire guide
Right-back piping
Bind coolant pipe
and drain hose
together with
insulating tape.
Mounting plate
A
Interconnecting
wires
3-2. Left-side, left-back, or left-bottom piping.
1) Attach the drain hose to the underside of the refrigerant pipes
with adhesive vinyl tape.
2) Be sure to connect the drain hose to the drain port in place of a
drain plug.
3) Shape the refrigerant pipe along the pipe
path marking on the mounting plate.
4) Pass drain hose and refrigerant pipes
through the wall hole, then set the indoor
unit on mounting plate hooks, using the
markings at the top of indoor unit as a
guide.
5) Pull in the interconnecting wires.
6) Connect the inter-unit piping.
Drain hose
Caulk this hole
with putty or
caulking material.
Remove pipe port cover here for left-bottom piping
Interconnecting wires
How to set drain plug
No gap
Insert a hexagon wrench (4mm)
A
Bind with
plastic tape.
Left-bottom piping
Do not apply lubricating
oil (refrigerant machine
oil) when inserting.
Application of causes
deterioration and drain
leakage of the plug.
Mounting plate
Wrap insulating tape around the
bent portion of refrigerant pipe.
Overlap at least half the width of
the tape with each turn.
Thermistor cable
Remove pipe
port cover
here for leftside piping
Left-side
piping
Left-back
piping
6 ■English
Note:
1) Wrap the refrigerant pipes and drain hose together with insulation tape as
right figure, in case of setting the drain hose through the back of the
indoor unit.
2) If it difficult to fix the claws of the bottom frame on the catches of the
mounting plate.
Secure indoor unit to the mounting plate with screws (M4 × 12L).
Drain hose
A
Mounting
plate
Refrigerant
pipes
3-3. Wall embedded piping.
Follow the instructions given under
Left-side, left-back, or left-bottom piping
1) Insert the drain hose to this depth so it wont be pulled out of the drain
pipe.
Wiring.
4.
.
Bottom frame
Insert drain hose
to this depth so
it won’t be pulled
out of drain pipe.
or more
Outer wall
G M4 × 12L (2 point)
Inner wall
Drain hose50mm
Vinyl chloride
drain pipe
(VP-30)
WARNING
1) Do not use tapped wires, stand wires, extensioncords, or starbust connections, as they may cause overtheating, electrical
shock,or fire.
2) Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
3) Be sure to install an earth leak detector. (Failure to install an earth leakage breaker may result in electric shocks.)
4) When wiring indoor and outdoor units, always connect terminals together having the same numbers.
Should any terminal be connected to another terminal that has a different number, the air conditioner may stop running, or the
fuse on the indoor or outdoor unit may blow out.
(See the electric wiring diagram included with the product for details on the fuse specifications.)
• Do not turn ON the safety breaker until all work is completed.
1) Strip wire ends (15mm).
2) Match wire colours with terminal numbers on indoor and outdoor units’ terminal blocks and firmly screw wires to the corresponding terminals.
3) Connect the earth wires to the corresponding terminals.
4) Pull wires to make sure that they are securely latched up, then retain wires with wire retainer.
5) Shape the wires so that the service lid fits securely, then close service lid.
Terminal blockElectrical component box
Firmly fix the wires with
the terminal screws.
Firmly secure wire retainer
so that wires sustain no
external stress.
Use the specified wire type.
Specification for field wire
Wire Size (
Interconnecting wires
Power supply wire 1.5 3
H05RN
mm2) Number of core
1.0 4
Firmly fix the wires with
the terminal screws.
Interconnecting wires
5
4
3
2
1
Indoor unit
Shape wires so that the
service lid will fit securely.
Outdoor unit
12345LNE
Firmly fix the wires with
the terminal screws.
Thermistor cable (Included with the indoor unit)
H05RN
The earth leakage circuit
breaker is required depending
on site environment.
Safety
breaker
10A
Earth
Wire retainer
Earth leakage
circuit breaker
123 45
Powe r
supply
50Hz 220-240V
■English 7
Indoor Unit
Drain piping.
5.
1) Connect the drain hose, as described right.
2) Remove the air filters and pour some water into the drain pan to check the water
flows smoothly.
3)
When drain hose requires extension, obtain an extension hose commercially available.
Be sure to thermally insulate the indoor section of the extension hose.
4)
When connecting a rigid polyvinyl chloride pipe
(nominal diameter 13mm) directly to the drain
hose attached to the indoor unit as with embedded
piping work, use any commercially available drain
socket (nominal diameter 13mm) as a joint.
Drain hose supplied with
the indoor unit
φ18
Indoor unit
drain hose
Commercially available drain
socket
(nominal diameter 13mm)
The drain hose should
be inclined downward.
No trap is permitted.
Do not put the end
of the hose in water.
φ18
Heat insulation tube
(Field supply)
Commercially available rigid
polyvinyl chloride pipe
(nominal diameter 13mm)
Extension drain hose
8 ■English
Outdoor Unit
Installing outdoor unit.
1.
• For outdoor unit installation, see Choosing a Site and Indoor/Outdoor Unit Installation Drawings.
Flaring the pipe end.
2.
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing downward
so that the chips do not enter the pipe.
3) Put the flare nut on the pipe.
4) Flare the pipe.
5) Check that the flaring is properly made.
Outdoor unit
Set exactly at the position shown below.
A
A 0-0.5mm
Die
(Cut exactly at
right angles.) Remove burrs
Flaring
Flare tool for R410A
Clutch-type
Clutch-type (Rigid-type)
Conventional flare tool
1.0-1.5mm
Flare’s inner
surface must
be flaw-free.
WARNING
1) Do not use mineral oil on flared part.
2) Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.
3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
4) Do never install a drier to this R410A unit in order to guarantee its lifetime.
5) The drying material may dissolve and damage the system.
6) Incomplete flaring may cause refrigerant gas leakage.
Refrigerant piping.
3.
1) Align the centres of both flares and tighten the flare nuts 3 or 4
turns by hand. Then tighten them fully with the torque wrenches.
• Use torque wrenches when tightening the flare nuts to prevent
damage to the flare nuts and escaping gas.
2) To prevent gas leakage, apply refrigeration machine oil on both
inner and outer surfaces of the flare. (Use refrigeration oil for
R410A)
3-1. Caution on piping handling.
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe
bender for bending.
(Bending radius should be 30 to 40mm or larger.)
25 class
3/8 inch
32.7-39.9N
(330-407kgf
25 class
3/8 inch
21.6-27.4N
(220-280kgf
Service port cap 10.8-14.7N l m
tightening torque (110-150kgf
Rain
Flare nut tightening torque
Gas side
35 class
1/2 inch
l
m
l
cm)
49.5-60.3N
(505-615kgf
l
l
cm)
m
Valve cap tightening torque
Gas side
35 class
1/2 inch
l
m
l
cm)
48.1-59.7N
(490-610kgf
Be sure to
place a cap.
If no flare cap is
available, cover the
flare mouth with
tape to keep dirt or
water out.
l
l
cm)
m
Wing-nut type (Imperial-type)
1.5-2.0mm
Check
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Liquid side
1/4 inch
14.2-17.2N
(144-175kgf
Liquid side
1/4 inch
21.6-27.4N
(220-280kgf
l
cm)
Wall
l
l
cm)
l
l
cm)
m
m
3-2. Selection of copper and heat insulation materials.
• When using commercial copper pipes and fittings, observe the following:
1) Insulation material: Polyethylene foam
Gas pipe
Inter-unit wiring
Thermistor cable
Liquid pipe
Heat transfer rate: 0.041 to 0.052W/mK (0.035 to 0.045kcal/mh°C)
Refrigerant gas pipe’s surface temperature reaches 110°C max.
Choose heat insulation materials that will withstand this temperature.
2) Be sure to insulate both the gas and liquid piping and to provide insulation
dimensions as below.
Gas side
25 class 35 class 25 class 35 class
Liquid side
Gas pipe thermal insulation
Gas pipe
insulation
Finishing tape
thermal insulation
Liquid pipe
insulation
Drain hose
Liquid pipe
O.D. 9.5mm O.D. 12.7mm O.D. 6.4mm I.D. 12-15mm I.D. 14-16mm I.D. 8-10mm
Thickness 0.8mm Thickness 10mm Min.
3) Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
■English 9
Outdoor Unit
Purging air and checking gas leakage.
4.
• When piping work is completed, it is necessary to purge the air and check for gas leakage.
WARNING
1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3) R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants may damage the vacuum
pump or the unit.
• If using additional refrigerant, perform air purging from the refrigerant pipes and
indoor unit using a vacuum pump, then charge additional refrigerant.
• Use a hexagonal wrench (4mm) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at the specified
Compound
pressure gauge
Gauge
manifold
Pressure
meter
tightening torque.
Low-pressure
valve
Charging
hoses
Highpressure
valve
Vacuum pump
1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.
2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).
(High-pressure valve subsequently requires no operation.)
3) Do vacuum pumping and make sure that the compound pressure gauge reads –0.1MPa (–76cmHg)*1.
4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.
(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*2.
Valve caps
Service port
Gas stop valve
Liquid
stop
valve
5) Remove covers from liquid stop valve and gas stop valve.
6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.
After the check is complete, wipe all soapy water off.
7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.
(Do not attempt to turn valve rod beyond its stop.)
8) Tighten valve caps and service port caps for the liquid and gas stop valves with a torque wrench at the specified torques.
*1. Pipe length vs. vacuum pump run time
Pipe length Up to 15 metres More than 15 metres
Run time Not less than 10 min. Not less than 15 min.
*2. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe joint may exists.
Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).
10 ■English
Pump down operation.
5.
In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve cap from liquid stop valve and gas stop valve.
2) Carry out forced cooling operation.
3) After five to ten minutes, close the liquid stop valve with a hexagonal
wrench.
After two to three minutes, close the gas stop valve and stop forced cool-
4)
ing operation.
Liquid stop valve
Hexagonal wrench
Close
Wiring.
6.
• For interconnecting wire connections, see Indoor Unit, 4 Wiring.
Firmly fix the wires with
the terminal screws.
Plug in the
connector fully.
Thermistor
H
cable
Gas stop valve
45LNE123
4 P4
Valve cap
Terminal
block
Use the specified
wire type and
connect it securely.
Firmly secure wire retainer
so wire terminations will
not receive external stress.
Shape wires so that the
service lid and stop
valve cover fit securely.
■English 11
Outdoor Unit
Observe the notes mentioned below when wiring to the terminal block.
Precautions to be taken for power supply wiring.
(Use a round crimp-style terminal for connection to the terminal block.
In case it cannot be used due to unavoidable reasons, be sure to
observe the following instruction.)
CAUTION
When connecting the connection wires to the terminal block using a single core wire, be sure to perform curling.
Problems with the work may cause heat and fires.
Round crimp-style
terminal
Stranded wire
Strip wire end
to this point.
Excessive strip length
may cause electrical
shock or leakage.
Good Wrong
Stripping wire at terminal block
• Pull the wire and make sure that it does not disconnect. Then fix the wire in place with a wire stop.
Drain work.
7.
1) Use drain plug for drainage.
2) If the drain port is covered by a mounting base or floor surface, place additional
foot bases of at least 30mm in height under the outdoor unit’s feet.
3) In cold areas, do not use a drain hose with the outdoor unit.
(Otherwise, drain water may freeze, impairing heating performance.)
L
Drain-water hole
Bottom frame
L
Drain plug
Hose (available commercially,
inner dia. 16mm)
12 ■English
Trial Operation and Testing
Trial operation and testing.
1.
1-1 Measure the supply voltage and make sure that it falls in the specified range.
1-2 Trial operation should be carried out in either cooling or heating mode.
• In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temper-
ature.
1) Trial operation may be disabled in either mode depending on the room temperature.
2) After trial operation is complete, set the temperature to a normal level (26°C to 28°C in cooling mode, 20°C to 24°C in
heating mode).
3) For protection, the system disables restart operation for 3 minutes after it is turned off.
1-3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts,
such as louver movement, are working properly.
* The air conditioner requires a small amount of power in its standby mode. If the system is not to be used for some
time after installation, shut off the circuit breaker to eliminate unnecessary power consumption.
* If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original operation
mode when the circuit breaker is opened again.
Test items.
2.
Test Items
Indoor and outdoor units are installed properly on solid bases. Fall, vibration, noise
No refrigerant gas leaks.
Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated.
Draining line is properly installed. Water leakage
System is properly earthed. Electrical leakage
The specified wires are used for interconnecting wire connections. Inoperative or burn damage
Indoor or outdoor unit’s air intake or exhaust has clear path of air.
Stop valves are opened.
Indoor unit properly receives remote control commands. Inoperative
Thermistor cable is plugged in the connector fully. Inoperative
(diagnostic display on RC)
Incomplete cooling/heating
function
Water leakage
Incomplete cooling/heating
function
Symptom
Check
■English 13
Two-dimensional bar code is a code
for manufacturing.
3P211822-1C M07B070B
(0712) HT
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