Mitsubishi Electric MXZ-8B48NA User manual

_IL ITSUBISHI
ELECTRIC
Air-Conditioners OUTDOOR UNIT
MXZ-8B48NA
INSTALLATION MANUAL I _iN_ _ I
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
MANUEL D'INSTALLATION 1_8::: !ia_ _ _ 8u8:1
Veuillez lire le manuel d'installation en entier avant d'installer ce climatiseur pour eviter tout accident et vous
assurer d'une utilisation correcte.
MANUAL DE INSTALACION I_ iN__LA_ I
Para un uso seguro y correcto, lea detalladamente este manual de instalaci6n antes de montar la unidad de
aire acondicionado.

Contents
1. Safety precautions ................................................ 2
2. Installation diagram & parts ......................................... 3
3. Installation location ............................................... 4
4. Installing the outdoor unit .......................................... 6
5. Installing the refrigerant piping ...................................... 6
1. Safety precautions
6. Drainage piping work ............................................. 10
7. Electrical work .................................................. 10
8. Test run ...................................................... 14
9. Special Functions ............................................... 15
1_ efore installing the unit, make sure you read all the "Safety precau-
tions".
I_ Please report to or take consent by the supply authority before connec-
tion to the system.
z_ Warning:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
After installation work has been completed, explain the "Safety Precautions,"
use,and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
_: Indicates a part which must be grounded.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• The unit must not be installed by the user. Ask a dealer or an authorized
technician to install the unit. If the unit is installed incorrectly, water leak-
age, electric shock, or fire may result.
• For installation work, follow the instructions in the Installation Manual
and use tools and pipe components specifically made for use with R410A
refrigerant.
• The R410A refrigerant in the HFC system is pressurized 1.6 times the
pressure of usual refrigerants. If pipe components not designed for R410A
refrigerant are used and the unit is not installed correctly, the pipes may
burst and cause damage or injuries. In addition, water leakage, electric
shock, or fire may result.
• The unit must be installed according to the instructions in order to minimize
the risk of damage from earthquakes, typhoons, or strong winds. An incor-
rectly installed unit may fall down and cause damage or injuries.
• The unit must be securely installed on a structure that can sustain its weight.
If the unit is mounted on an unstable structure, it may fall down and cause
damage or injuries.
• If the air conditioner is installed in a small room, measures must be taken to
prevent the refrigerant concentration in the room from exceeding the safety
limit in the event of refrigerant leakage. Consult a dealer regarding the appropri-
ate measures to prevent the allowable concentration from being exceeded.
Should the refrigerant leak and cause the concentration limit to be
exceeded, hazards due to lack of oxygen in the room may result.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes
into contact with a flame, poisonous gases will be released.
• All electric work must be performed by a qualified technician according to
local regulations and the instructions given in this manual. The units must
be powered by dedicated power lines and the correct voltage and circuit
breakers must be used. Power lines with insufficient capacity or incorrect
electrical work may result in electric shock or fire.
•Be sure to connect the power supply cords and the connecting wires for
the indoor units, outdoor units, and branch boxes directly to the units (no
intermediate connections).
Intermediate connections can lead to communication errors if water enters
the cords or wires and causes insufficient insulation to ground or a poor
electrical contact at the intermediate connection point.
(If an intermediate connection is necessary, be sure to take measures to
prevent water from entering the cords and wires.)
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. If the pipes are not connected cor-
rectly, the unit will not be properly grounded and electric shock may result.
• Use only specified cables for wiring. The connections must be made
securely without tension on the terminals. If the cables are connected or
installed incorrectly, overheating or fire may result.
• The terminal block cover panel of the outdoor unit must be firmly attached.
If the cover panel is mounted incorrectly and dust and moisture enter the
unit, electric shock or fire may result.
• When installing or moving the air conditioner, use only the specified refrig-
erant (R410A) to charge the refrigerant lines. Do not mix it with any other
refrigerant and do not allow air to remain in the lines. Air enclosed in the
lines can cause pressure peaks resulting in a rupture and other hazards.
• Use only accessories authorized by Mitsubishi Electric and ask a dealer
or an authorized technician to install them. If accessories are incorrectly
installed, water leakage, electric shock, or fire may result.
• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs are
not performed correctly, water leakage, electric shock, or fire may result.
• The user should never attempt to repair the unit or transfer it to another
location.
If the unit is installed incorrectly, water leakage, electric shock, or fire may
result. If the air conditioner must be repaired or moved, ask a dealer or an
authorized technician.
• After installation has been completed, check for refrigerant leaks. If refriger-
ant leaks into the room and comes into contact with the flame of a heater or
portable cooking range, poisonous gases will be released.
1.1. Before installation
Caution:
•Do not use the unit in an unusual environment. If the air conditioner is
installed in areas exposed to steam, volatile oil (including machine oil),
or sulfuric gas, areas exposed to high salt content such as the seaside,
or areas where the unit will be covered by snow, the performance can be
significantly reduced and the internal parts can be damaged.
•Do not install the unit where combustible gases may leak, be produced,
flow, or accumulate. If combustible gas accumulates around the unit, fire or
explosion may result.
• The outdoor unit produces condensation during the heating operation. Make
sure to provide drainage around the outdoor unit if such condensation is
likely to cause damage.
• When installing the unit in a hospital or communications office, be prepared
for noise and electronic interference. Inverters, home appliances, high-
frequency medical equipment, and radio communications equipment can
cause the air conditioner to malfunction or breakdown. The air conditioner
may also affect medical equipment, disturbing medical care, and communi-
cations equipment, harming the screen display quality.
1.2. Before installation (relocation)
Caution:
•Be extremely careful when transporting the units. 2 or more persons are
needed to handle the unit, as it weighs 20 kg, 44 Ibs or more. Do not grasp
the packaging bands. Wear protective gloves to remove the unit from the
packaging and to move it, as you can injure your hands on the fins or the
edge of other parts.
•Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause stabs or other
injuries.
• The base and attachments of the outdoor unit must be periodically checked
for looseness, cracks or other damage. If such defects are left uncorrected,
the unit may fall down and cause damage or injuries.
•Do not clean the air conditioner unit with water. Electric shock may result.
• Tighten all flare nuts to specification using a torque wrench. If tightened too
much, the flare nut can break after an extended period and refrigerant can
leak out.
2

1. Safety precautions
1.3. Before electric work
Caution:
• Be sure to install circuit breakers. If not installed, electric shock may result.
•For the power lines, use standard cables of sufficient capacity. Otherwise, a
short circuit, overheating, or fire may result.
•When installing the power lines, do not apply tension to the cables. If the
connections are loosened, the cables can snap or break and overheating or
fire may result.
•Be sure to ground the unit. Do not connect the ground wire to gas or water
pipes, lighting rods, or telephone grounding lines. If the unit is not properly
grounded, electric shock may result.
• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse),
and molded case circuit breaker) with the specified capacity. If the circuit
breaker capacity is larger than the specified capacity, breakdown or fire
may result.
1.4. Before starting the test run
Caution:
•Turn on the main power switch more than 12 hours before starting opera-
tion.
Starting operation just after turning on the power switch can severely dam-
age the internal parts. Keep the main power switch turned on during the
operation season.
•Before starting operation, check that all panels, guards and other protective
parts are correctly installed. Rotating, hot, or high voltage parts can cause
injuries.
•Do not touch any switch with wet hands. Electric shock may result.
• Do not touch the refrigerant pipes with bare hands during operation. The
refrigerant pipes are hot or cold depending on the condition of the flowing
refrigerant. If you touch the pipes, burns or frostbite may result.
• After stopping operation, be sure to wait at least five minutes before turn-
ing off the main power switch. Otherwise, water leakage or breakdown may
result.
1.5. Using R410A refrigerant air conditioners
_, Caution
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. Make sure the insides of the pipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds, oxidants, debris, or dust. Use pipes with the specified thick-
ness. (Refer to page 6) Note the following if reusing existing pipes that car-
ried R22 refrigerant.
- Replace the existing flare nuts and flare the flared sections again.
- Do not use thin pipes. (Refer to page 6)
• Store the pipes to be used during installation indoors and keep both ends
of the pipes sealed until just before brazing. (Leave elbow joints, etc. in
their packaging.) If dust, debris, or moisture enters the refrigerant lines, oil
deterioration or compressor breakdown may result.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections. If mineral oil is mixed in the refrigeration
oil, oil deterioration may result.
2. Installation diagram & parts
• Do not use refrigerant other than R410A refrigerant. If another refrigerant is
used, the chlorine will cause the oil to deteriorate.
• Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant. Contact your
nearest dealer for any questions.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Tools (for R410A) Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
•Be sure to use the correct tools. If dust, debris, or moisture enters the re-
frigerant lines, refrigeration oil deterioration may result.
• Do not use a charging cylinder. If a charging cylinder is used, the composi-
tion of the refrigerant will change and the efficiency will be lowered.
2.1. Before installation (Fig. 2-1)
Outdoor unit
Fig. 2-1
Branchbox
IS-branches type I
13-branchestype I
Any structural alterations necessary for the installation must comply with the local
building code requirements.
This diagram is intended to show the configuration of accessories.
For actual installation, the outdoor unit is to be turned 180 °.
Units should be installed by licensed contractor according to local code require-
ment.
Note:
The dimensions given along the arrows above are required to guarantee the
air conditioner's performance. Install the unit in as wide a place as possible
for later service or repairs.
Parts to be locally procured
Branch box/outdoor unit connecting wire
O (3-core, Refer to 7.3. External wiring procedure) 1
Extension pipe 1
Wall hole sleeve 1
Wall hole cover 1
Pipe fixing band
(The quantity depends on the pipe length.) 2 to 7
Fixing screw for _ 4 x 20 mm (13/16")
O (The quantity depends on the pipe length.) 2 to 7
Piping tape 1
_) Putty 1
_]) Drain hose (hard PVC pipe O.D. 20 mm (13/16")) 1
Refrigeration oil 1
Power supply cord
(2-core, Refer to 7.3. External wiring procedure) 13

3. Installation location
o
03
@
Fig. 3-1
i
Fig. 3-2 @
Fig. 3-3
mm (inch)
3.1. Refrigerant pipe
Refer to 5.2. Pipe length and height difference.
3.2. Choosing the outdoor unit installation location
•Avoid locations exposed to direct sunlight or other sources of heat.
• Select a location from which noise emitted by the unit will not inconvenience
neighbors.
• Select a location permitting easy wiring and pipe access to the power source and
indoor unit.
• Avoid locations where combustible gases may leak, be produced, flow, or ac-
cumulate.
• Note that water may drain from the unit during operation.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit can be covered by snow. In areas where heavy
snow fall is anticipated, special precautions such as raising the installation loca-
tion or installing a hood on the air intake must be taken to prevent the snow from
blocking the air intake or blowing directly against it. This can reduce the airflow
and a malfunction may result.
• Avoid locations exposed to oil, steam, or sulfuric gas.
• Use the transportation handles of the outdoor unit to transport the unit. If the unit
is carried from the bottom, hands or fingers may be pinched.
3.3. Outline dimensions (Outdoor unit) (Fig. 3-1)
Constraints on indoor unit installation
You should note that indoor units that can be connected to this outdoor unit are the
following models.
• Indoor units with model numbers 06, 09, 12, 15, 18, 24, 30 can be connected.
Refer to the table below for possible 2-8 room, indoor unit combinations.
Verification
The rated capacity should be determined by observing the table below. The unit'
s quantities are limited in 2 to 8 units. For the next step, make sure that the total
rated capacity selected will stay in a range of 12 - 70.2 kBTU/h.
Example:
MSZ-18 = 18
+
SEZ-12 = 12
+
SLZ-12 = 12
+
SEZ-09 = 9
+
SLZ-09 = 9
Total rated capacity
60 <170 kBTU/h I
Indoor unit type 06 09 12 15 18 24 30
Ratedcapacty Coo ng (kBTU/h 6 9 12 15 18 24 30
Combinations in which the total capacity of indoor units exceeds the capacity of the
outdoor unit (= 54.0 kBTU/h) will reduce the cooling capacity of each indoor unit
below their rated cooling capacity. Thus, combine indoor units with an outdoor unit
within the outdoor unit's capacity (= 54.0 kBTU/h), if possible.
3.4. Ventilation and service space
3.4.1. Windy location installation
When installing the outdoor unit on a rooftop or other location unprotected from
the wind, situate the air outlet of the unit so that it is not directly exposed to strong
winds.
Strong wind entering the air outlet may impede the normal airflow and a malfunc-
tion may result.
The following shows three examples of precautions against strong winds.
(_ Face the air outlet towards the nearest available wall about 50 cm (19-11/16")
away from the wall. (Fig. 3-2)
Q Install an optional air guide if the unit is installed in a location where strong winds
from a typhoon, etc. may directly enter the air outlet. (Fig. 3-3)
@Air guide
® Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 3-4)
® Wind direction
4Fig. 3-4

3. Installation location
............'_,ii_i!;_il " : ,;,,. i o2,
_qi] _hH_V(33
...._ii iiiiiiii;s_ ;03
(inch)
Fig. 3-5 Fig. 3-6 Fig. 3-7 Fig. 3-8
Fig. 3-9 Fig. 3-10
Fig. 3-12 Fig. 3-13 Fig. 3-14
Fig. 3-11
Fig. 3-15 Fig. 3-16 Fig. 3-17
3.4.2. When installing a single outdoor unit
Minimum dimensions are as follows, except for Max., meaning Maximum dimen-
sions, indicated.
Refer to the figures for each case.
d_ Obstacles at rear only (Fig. 3-5)
@)Obstacles at rear and above only (Fig. 3-6)
®Obstacles at rear and sides only (Fig. 3-7)
(4_Obstacles at front only (Fig. 3-8)
,: When using the optional air outlet guides, the clearance is 19-11/16" (500 mm) or more.
@Obstacles at front and rear only (Fig. 3-9)
,: When using the optional air outlet guides, the clearance is 19-11/16" (500 mm) or more.
®Obstacles at rear, sides, and above only (Fig. 3-10)
•Do not install the optional air outlet guides for upward airflow.
3.4.3. When installing multiple outdoor units
Leave 3/8" (10 mm) space or more between the units.
(DObstacles at rear only (Fig, 8-11 )
QObstacles at rear and above only (Fig. 3-12)
• No more than 3 units must be installed side by side. tn addition, leave space as shown,
• Do not install the optionat air outlet guides for upward airflow.
G Obstacles at front only (Fig. 3-13)
,_When using the optional air outlet guides, the clearance is 39-3/8" (1000 mm) or more,
_Obstacles at front and rear only (Fig, 3-14)
When using the optional air outlet guides, the clearance is 39-3/8" (1000 mm) or more.
(_ Single parallel unit arrangement (Fig, 3-15)
,: When using the optional air outlet guides installed for upward airflow, the clearance is
39-3/8" (1000 mm) or more.
@Multiple parallel unit arrangement (Fig. 3-16)
,: When using the optional air outlet guides installed for upward airflow, the clearance is
59-1/16" (1500 mm) or more,
(_ Stacked unit arrangement (Fig. 3-17)
• The units can be stacked up to 2 units high.
• No more than 2 stacked units must be installed side by side, tn addition, leave space as
shown.
5

4. Installing the outdoor unit
(inch) • Be sure to install the unit in a sturdy, level surface to prevent rattling noises dur-
ing operation. (Fig. 4-1 )
<Foundation specifications>
Foundation bolt M10 (3/8")
Thickness of concrete 120 mm (4-23/32")
Length of bolt 70 mm (2-3/4")
Weight-bearing capacity 320 kg (705 Ibs)
®
@ M3/8 (M10) bolt
@ Base
© As long as possible.
© Vent
® Setdeepintheground
I23-5/8 Min. 14-6/32 23-5/8
L L ±
!
Min. 13/32 6_7/8 6-7/8 _
3g- 13/32
Fig. 4-1
5. Installing the refrigerant piping
• Make sure that the length of the foundation bolt is within 30 mm (1-3/16") of the
bottom surface of the base.
• Secure the base of the unit firmly with four-M10 foundation bolts in sturdy loca-
tions.
Installing the outdoor unit
• Do not block the vent. If the vent is blocked, operation will be hindered and break-
down may result.
• In addition to the unit base, use the installation holes on the back of the unit to at-
tach wires, etc., if necessary to install the unit. Use self-tapping screws (_5 x 15
mm, e13/16" x 19/32" or less) and install on site.
z_ Warning:
• The unit must be securely installed on astructure that can sustain its
weight.
If the unit is mounted on an unstable structure, it may fall down and cause
damage or injuries.
• The unit must be installed according to the instructions in order to mini-
mize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage or injuries.
@ Outdoor unit
® Branchbox
® It_oor unit
.I hi ai!! a_[___ .._L_ _ ._F_!_
.......i]i..........
Fig. 5-1
5.1. Precautions for devices that use R410A refrigerant
• Refer to page 3 for precautions not included below on using air conditioners with
R410A refrigerant.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil ap-
plied to the flared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to
connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specified
in the table to the below. Make sure the insides of the pipes are clean and do not
contain any harmful contaminants such as sulfuric compounds, oxidants, debris,
or dust.
Z_ Warning:
When installing or moving the air conditioner, use only the specified refriger-
ant (R410A) to charge the refrigerant lines. Do not mix it with any other refrig-
erant and do not allow air to remain in the lines. Air enclosed in the lines can
cause pressure peaks resulting in a rupture and other hazards.
_6.35 mm (1/4 inch), _9.52 mm (3/8 inch), Thickness 0.8 mm (1/32 inch)
_12.7 mm (1/2 inch)
_15.88 (5/8 inch) Thickness 1.0 mm (5/128 inch)
• Do not use pipes thinner than those specified above.
Permissible
length
(one-way)
Total piping length
Farthest piping length (L)
Piping length between outdoor unit and branch boxes
Farthest piping length after branch box (I)
Total piping length between branch boxes and indoor units
In indoor/outdoor section (H) "1
Permissible
height difference In branch box/indoor unit section (hl)
(one-way) In each branch unit (h2)
In each indoor unit (h3)
Number of bends
"1 Branch box should be placed within the level between the outdoor unit and indoor units.
b1+b2+a1+a2+a3+a4+a5+a6+a7+a8<115m(377ff.)
b2 + a8 < 70 m (230 ft.) (b2 < 55 m (180 ft.), a8 < 15 m (49 ft.))
bl + b2 < 55 m (180 ft.)
a8 < 15 m (49 ft.)
a1+a2+a3+a4+a5+a6+a7+a8<60m(197ft.)
H < 30 m (98 ft.) (In case of outdoor unit is set higher than indoor unit)
H < 20 m (66 ft.) (In case of outdoor unit is set lower than indoor unit)
h1+h2<15m(49ft.)
h2 < 15 m (49 ft.)
h3 < 12 m (39 ft.)
I bl+al I, I bl+a2 I, I bl+a3 I, I bl+a4 I, I bl+a5 I, I b2+a6 I, I b2+a7 I, I b2+a8 I < 15
5.2. Pipe length and height difference (Fig. 5-1)
Flared connections
• This unit has flared connections on each indoor unit and branch box and outdoor unit sides.
• Remove the valve cover of the outdoor unit, then connect the pipe.
• Refrigerant pipes are used to connect the branch box and outdoor unit.
6

5. Installing the refrigerant piping
5.3. Addition of refrigerant
* When the unit is stopped, charge the unit with the additional refrigerant through
the liquid stop valve after the pipe extensions and indoor unit have been vacu-
umized.
When the unit is operating, add refrigerant to the gas check valve using a safe-
ty charger. Do not add liquid refrigerant directly to the check valve.
Refer to the "1.5. Using R410A refrigerant air conditioners" for more information.
Table 1
Total piping length 41-50m 51-70m 71-90m 91-115m
bl+b2+al +a2+a3+a4+a5+a6+a7+a8 (135-164ft.) (165-230ft.) (231-295ft.) (296-377ft.)
Additional refrigerant charging amount 0.6 kg 1.4 kg 2.2 kg 3.2 kg
(21 oz) (49 oz) (78 oz) (113 oz)
If connecting an indoor unit with _9.52 mm (3/8 inch) liquid pipes (model number
24 or more for M- and S-Series and model number 18 or more for P-Series'_. the
additional refrigerant charging amount in Table 1 must be corrected (add the follow-
ing AR value from the value given in Table 1).
Additional refrigerant charging correction amount
AR = 0.01 [kg/m] x _9.52 (3/8 inch) branch pipe (liquid pipe) total length [m]
(0.107 [oz/ft] x _a9.52 (3/8 inch) branch pipe (liquid pipe) total length [ft])
Example) bl = 20 m (66 ft.). b2 = 25 m (82 ft.)
Indoor unitA _9.52 (3/8) Liquid pipe a1=12 m (39 ft.)
Indoor unit B _6.35 (1/4) Liquid pipe a2=11 m (36 ft.)
Indoor unit C _6.35 (1/4) Liquid pipe a6=14 m (46 ft.)
Indoor unit D _9.52 (3/8) Liquid pipe a7=13 m (43 ft.)
Total piping length : b1+b2+a1+a2+a6+a7=95 m (312 ft.)
--_ According to Table 1, the additional refrigerant charging amount is 3.2 kg (113 oz).
Because indoor units with _a9.52 (3/8) liquid pipes are connected (indoor units A and
D in this example), the additional refrigerant charging amount must be corrected.
Additional refrigerant charging correction amount
AR = 0.01 [kg/m] x _9.52 (3/8) branch pipe (liquid pipe) total length (al +a7)
= 0.01 x (12+13 m) [0.107 x(39+43 ft.)]
= 0.25 kg (9 oz)
Therefore the additional refri(]erant charaina amount is
3.2 kg + 0.25 kg = 3.45 kg [113 oz + 9 oz =122 oz].
•in case of using 1-branch box
Flare connectionemployed. (No.brazing) Branchbox
0
•in case of using 2-branch boxes
2 branches pipe (joint)
(1) Valve size for outdoor unit
(2) Valve size for branch box
Branchbox #2
Fig. 5-2
mm (3/8 inch)
__)
Liquid pipe _a6.35 mm (1/4 inch)
A_UNIT Gas pipe _a9.52 mm (3/8 inch)
Liquid pipe _a6.35 mm (1/4 inch)
a_ UNIT Gas pipe _a9.52 mm (3/8 inch)
Liquid pipe _a6.35 mm (1/4 inch)
UNIT Gas pipe _a9.52 mm (3/8 inch)
Liquid pipe _a6.35 mm (1/4 inch)
UNIT Gas pipe _a9.52 mm (3/8 inch)
Liquid pipe _a6.35 mm (1/4 inch)
UNIT Gas pipe _a12.7 mm (1/2 inch)
* 3-branch type : only [A],1_. [] unit
Conversion formula
/('_'_ f--'__B_ 1/4 F _6.35 (1/4)
3/8 F _9.52 (3/8)
1/2 F _12.7 (1/2)
5/8 F _15.88 (5/8)
r,u'-:-. 5-3 3/4 F _19.05 (3/4)
t
5.4. Selecting pipe size (Fig. 5-2)
Conversion formula
The piping connection size differs ac-
_9.52 mm cording to the type and capacity of indoor
Liquid units. Match the piping connection size of
(3/8 inch) branch box with indoor unit.
If the piping connection size of branch
box does not match the piping connection
size of indoor unit, use optional different-
_15.88 mm
Gas diameter (deformed) joints to the branch
(5/8 inch) box side. (Connect deformed joint directly
to the branch box side.)
Different-diameter joint (optional parts) (Fig. 5-3)
iiiiiiii
MAC-A454JP _a9.52 (3/8) --_ _a12.7(1/2) _9.52 (3/8) _a12.7 (1/2)
MAC-A455JP _a12.7 (1/2) --_ _a9.52(3/8) _12.7 (1/2) _a9.52 (3/8)
MAC-A456JP _a12.7 (1/2) --_ _a15.88 (5/8) _12.7 (1/2) _a15.88 (5/8)
PAC-493PI _a6.35 (1/4) --_ _a9.52(3/8) _6.35 (1/4) _a9.52 (3/8)
PAC-SG78RJ-E _a9.52 (3/8) --_ _a15.88 (5/8) _9.52 (3/8) _a15.88 (5/8)
Piping preparation
Table below shows the specifications of pipes commercially available.
: i_i_
6.35 (1/4) 8 (5/16)
9.52 (3/8) 8 (5/16) Heat resisting foam plastic 0.045
12.7 (1/2) 8 (5/16) specific gravity
15.88 (5/8) 8 (5/16)
) Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
Refrigerant pipe bending radius must be 4" (100 ram) or more.
z_ Caution
Be sure to use the insulation of specified thickness. Excessive thickness
may cause incorrect installation of the indoor unit and branch box, and
lack of thickness may cause dew drippage.
2-branch pipe (Joint) : Optional parts (According to the connection method,
you can choose the favorite one.
MSDD-50AR-E flare
MSDD-50BR-E brazing
•installation procedure (2 branches pipe (Joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
7

5. Installing the refrigerant piping
© ©
@ Liquid pipe
(_ Gas pipe
@ Insulation
@ Taping
Fig. 5-4
o\\+ %
\/ "I;o
®
@ Flare cutting dimensions
® Flare nut tightening torque
©
®
Fig. 5-5
@ (Fig. 5-5)
Copper pipe O.D.
(mm) (inch)
_6.35 (1/4)
_9.52 (3/8)
_12.7 (1/2)
_15.88 (5/8)
Flare dimensions
_A dimensions (mm) (inch)
8.7 - 9.1 (5/16 - 3/8)
12.8- 13.2 (1/2)
16,2- 16.6 (5/8)
19,3- 19.7 (3/4)
Copper pipe O.D. Flare nut O.D.
(mm) (inch) (mm) (inch)
o6.35 (1/4) 17 (11/16)
o6.35 (1/4) 22 (7/8)
o9.52 (3/8) 22 (7/8)
o9.52 (3/8) 26 (1-1/4)
o12.7 (1/2) 26 (1-1/4)
o12.7 (1/2) 29 (1-1/8)
o15.88 (5/8) 29 (1-1/8)
o15.88 (5/8) 36 (1-7/16)
Tightening torque
(N.m)* (ft.ib)
14- 18 (10- 13)
34- 42 (25- 30)
34- 42 (25- 30)
49- 61 (35-44)
49- 61 (35-44)
68- 82 (49- 59)
68- 82 (49- 59)
100- 120 (71 -87)
* 1 N.m _ 10 kgf.cm
A
/
®
Fig. 5-6
@ Die
® Copper pipe
8
Refrigerant collection when relocating the indoor and outdoor
units (pump down)
_Connect a gauge manifold valve (pressure gauge included) to the service port
near the gas stop valve of the outdoor unit so that the refrigerant pressure can
be measured.
@Turn on the power supply (circuit breaker).
®Close the liquid stop valve, and then perform the test run for cooling operation
(SW4-1: ON and SW4-2: OFF).
* Be sure to wait at least 3 minutes after turning on the power supply before
setting SW4-1 and SW4-2. If the DIP switches are set before 3 minutes has
elapsed, the test run may not start.
_Fuliy close the gas stop valve when the pressure reading on the gauge drops
to 0.05 - 0.00 MPa* (7.3-0 PSIG) (approximately 0.5 - 0.0 kgf/cm2).
* If too much refrigerant has been added to the air conditioner system, the
pressure may not drop to 0.5 kgf/cm 2. If this occurs, use a refrigerant collect-
ing device to collect all of the refrigerant in the system, and then recharge
the system with the correct amount of refrigerant after the indoor and outdoor
units have been relocated.
@Stop the air conditioner operation (SW4-1: OFF and SW4-2: OFF).
Turn off the power supply (circuit breaker).
Z_Warning:
When pumping down the refrigerant, stop the compressor before disconnect-
ing the refrigerant pipes. The compressor may burst if air etc. get into it.
5.5. Connecting pipes (Fig. 5-4) (Fig. 5-5)
When commercially available copper pipes are used, insulate both the liquid and
gas pipes separately with commercially available insulation materials (heat-resis-
tant to 100 °C, 212 OFor more, thickness of 12 mm, 1/2 inch or more). (Fig. 5-4)
• The indoor parts of the drain pipe should be wrapped with polyethylene foam in-
sulation materials (specific gravity of 0.03, thickness of 9 mm (3/8 inch) or more).
[Fig. 5-5]
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tighten-
ing flare nut. @
• Use two wrenches to tighten piping connections. ®
• Use leak detector or soapy water to check for gas leaks after connections are
completed.
• Apply refrigerating machine oil over the entire flare seat surface. @
• Use the flare nuts as follows. ®
Z_Warning:
When installing the unit, securely connect the refrigerant pipes before start-
ing the compressor.
•Pipe size (Outdoor unit-Branch box)
Pipe size Liquid _9.52 (3/6)
_rnm) nch Gas _15.88(5/8)
•Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit
Indoor (BTU/h) 06 09 12 15 18 24
unit type _a6.35 _6.35 _6.35 _6.35 _a6.35 _a9.52
Pipe size Liquid (1/4) (1/4) (1/4) (1/4) (1/4) (3/8)
0amm) _a9.52 _9.52 _9.52 _12.7 _a12.7 _a15.88
(inch) Gas (3/8) (3/8) (3/8) (1/2) (1/2) (5/8)
•Pipe size (Branch box-Indoor unit) *Case of Pseries indoor unit
Indoor unit type (BTU/h) 18 24 30
Pipe size Liquid o6.35 (1/4) _9.52 (3/8) _9.52 (3/6)
(omm) (inch) Gas o12.7 (1/2) _15.88 (5/6) _15.88 (5/6)
• When bending the pipes, be careful not to break them. Bend radii of 100 mm (4
inch) to 150 mm (6 inch) are sufficient.
• Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
d) Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
® Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Ap-
plied on site).
• When usual pipe sealing is used, refer to Table 2 for flaring of R410A refrigerant
pipes.
The size adjustment gauge can be used to confirm A measurements.
Table 2 (Fig. 8-6) mm (inch)
A
Copper pipe O.D.
_a6.35 (1/4)
_a9.52 (3/8)
_a12.7 (1/2)
_a15.88 (5/8)
Flare tool for R410A Flare tool for R22.R407C
Clutch type
0- 0.5 (0-1/64) 1.0-1.5 (3/64-1/16)
0- 0.5 (0-1/64) 1.0-1.5 (3/64-1/16)
0- 0.5 (0-1/64) 1.0-1.5 (3/64-1/16)
0- 0.5 (0-1/64) 1.0-1.5 (3/64-1/16)

5. Installing the refrigerant piping
©
®
@ Frontpipingcover
® Piping cover
© Stopvalve
® Service panel
® Bend radius : 100 mm- 150mm [3-15/16"- 5-7/8"]
Fig. 5-7
®
(1) ®
®
Fig. 5-8
(2) ® ©
®
Fig. 5-9
@
®
Fig. 5-10
5.6. Refrigerant piping (Fig. 5-7)
Remove the service panel @ (3 screws) and the front piping cover @ (2 screws)
and rear piping cover ® (2 screws).
Refrigerant pipes are protectively wrapped
•The pipes can be protectively wrapped up to a diameter of _90 mm (3-9/16") be-
fore or after connecting the pipes. Cut out the knockout in the pipe cover following
the groove and wrap the pipes.
Pipe inlet gap
• Use putty or sealant to seal the pipe inlet around the pipes so that no gaps re-
main.
(If the gaps are not closed, noise may be emitted or water and dust will enter the
unit and breakdown may result.)
5.7. Caution for piping connection/valve operation
• Conduct piping connection and valve operation accurately by following the figure
below.
• Apply sealer along the insulator to prevent water entering the insulator covering
the refrigerant pipe joints.
• After evacuation and refrigerant charge, ensure that the handle is fully open. If
operating with the valve closed, abnormal pressure will be imparted to the high- or
low-pressure side of the refrigerant circuit, giving damage to the compressor, etc.
• Determine the amount of additional refriqerant charqe (refer "5.3. Addition of re-
friqerant"), and charqe refriqerant additionally throuqh the service port after com-
pletinq pipinq connection work.
• After completing work, tighten the service port (12 - 15 N.m) [9 - 11 ft.lbs] and cap
(20 - 25 N.m) [14 - 18 ft.lbs] securely to prevent gas leak.
"1 N.m _ 10 kgf.cm
Method of completely opening the stop valve
The stop valve opening method varies according to the outdoor unit model. Use the
appropriate method to open the stop valves.
(1) Gas side (Fig. 5-8)
(_ Remove the cap, pull the handle toward you and rotate 1/4 turn in a counter-
clockwise direction to open.
Q Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
(2) Liquid side (Fig. 5-9)
(_ Remove the cap and turn the valve rod counterclockwise as far as it will go
with the use of a 4 mm [3/16"] hexagonal wrench. Stop turning when it hits the
stopper.
Q Make sure that the stop valve is open completely and rotate the cap back to its
original position.
@ Valve
® Unit side
© Service port
@ Handle
® Cap
® Completely closed
® Completely open
® Refrigerant piping side (On-site installation)
@ Direction the refrigerant flows in
@ Wrench hole
5.8. Airtight test and evacuation
Airtight test (Fig. 5-10)
Airtight test should be made by pressurizing nitrogen gas. For the test method, re-
fer to the following figure.
(1) Connecting the testing tool. Make a test with the stop valve closed. Be also sure
to pressurize both liquid or high-pressure pipe and gas or low pressure pipe.
(2) Do not add pressure to the specified pressure all at once; add pressure little by
little.
@}Pressurize to 0.5 MPa [73 PSIG], wait five minutes, and make sure the pres-
sure does not decrease.
® Pressurize to 1.5 MPa [218 PSIG], wait five minutes, and make sure the pres-
sure does not decrease.
® Pressurize to 3.8 MPa [550 PSIG] and measure the surrounding temperature
and refrigerant pressure.
(3) If the specified pressure holds for about one day and does not decrease, the
pipes have passed the test and there are no leaks.
• If the surrounding temperature changes by 1°C [1.8°F], the pressure will
change by about 0.01 MPa [1.5 PSIG]. Make the necessary corrections.
(4) If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the
source of the gas leak.
@ Nitrogen gas ® Outdoor unit
® System analyzer ® Stop valve
© Lo-knob ® Liquid pipe or high-pressure pipe
@ Hi-knob ® Gas pipe or low-pressure pipe
® To branch box @ Service port
9

5. Installing the refrigerant piping
@ Freon cylinder
® Scale
® Valve
® 3-way joint
® Vacuum pump
CF)System analyzer
@ Lo-knob
® Hi-knob
_PTobranch box
(_ Outdoor unit
® Stop valve
CLDLiquid pipe or high-pressure pipe
@ Gas pipe or low-pressure pipe
® Service port
Fig. 5-11
Fig. 5-12
* The figure to the left is an example only.
The stop valve shape, service port po-
sition, etc., may vary according to the
model.
* Turn section @ only.
(Do not further tighten sections @ and
® together.)
© Charge hose
@ Service port
®Evacuation (Fig. 5-11)
Evacuation should be made from the service port provided on the outdoor unit's
stop valve to the vacuum pump commonly used for both liquid or high-pressure pipe
and gas or low-pressure pipe. (Make evacuation from both liquid or high-pressure
pipe and gas or low-pressure pipe with the stop valve closed.)
Remember: Never carry out air purge by refrigerant.
/_Warning:
When installing or moving a unit to another place, do not mix anything other
than specified refrigerant into the refrigeration cycle. If air is mixed, the re-
frigeration cycle may obtain abnormally high pressure, resulting in a burst
pipe.
* A high-precision gravimeter measurable up to 0.1 kg [3.5 oz] should be used.
If you are unable to prepare such a high-precision gravimeter, you may use a
charging cylinder.
Note:
•Use a gauge manifold, changing hose, and other parts for the refrigerant
indicated on the unit.
• Use a gravimeter. (One that can measure down to 0.1 kg [3.5 oz])
Precautions when using the charge valve (Fig. 5-12)
Do not tiqhten the service port too much when installinq it, otherwise, the valve
core could be deformed and become loose causinq a qas leak.
After positioning section ® in the desired direction, turn section @ only and tighten it.
Do not further tighten sections @ and ® together after tightening section @.
6. Drainage piping work
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
ket PAC-SG61 DS-E
PAC-SG64DP-E
7. Electrical work
[1] Basic systems OC: Outdoor unit
BC: Branchbox
OC IC: Indoor unit
RC: Remotecontroller
A BC(5-brCnchtypeu [_ ABe (3-bra_lch type)_
OC
A B
Note:
The indoor units can be connected
to any of the 5 connectors (5-branch
type) or 3 connectors (3-branch type)
of the branch box.
BC (5-branch type)
C D
]
_ 20(3-b ra nch type)
J J J
10

7. Electrical work
[2] Standard systems
2-1. Only 3-branch type 2-2. Only 5-branch type 2-3. 2-branch boxes (3-branch type)
OC OC OC
4Bo3branchtypeABBOSbrCnchtype
BC (3-branch type) BC (3-branch type)
IA B CI[A B C I
J J J J J J
2-4. 2 branch boxes (5-branch type, maximum 8 indoor units)
OC
A_
L/]
BC (5-branch type)_ r_ B_ (5-branch1t_ _
B C D B C D E I
J J J J J /_ J i,,'';' ,';';'_
X
1. Up to 2 branch boxes can be connected to a single outdoor
unit.
2. Up to 8 indoor units can be connected to the system.
[3] Incorrect systems
3-1. Group operation
by single remote
controller
OC
i
I ABC (3-brBanchtyPC)I
3-2. Group operation between different refrigerant
systems
OC
I
BC(3-branch type)
A B C
×
OC
I
_ABC (3-brBnchtyPC)I
J
3-3. Connection of M-NET adapter to outdoor unit
Master controller
(G-50 etc)
Powersupplyunit ]
J
3-1. Plural indoor units cannot be operated by a single remote controller.
3-2. Different refrigerant systems cannot be connected together.
3-3. A M-NET adapter cannot be connected to an outdoor unit.
11

7. Electrical work
/
Fig. 7-1
CONDUIT PLATE:accessory
7.1. Outdoor unit (Fig. 7-1) (Fig. 7-2)
_) Remove the service panel.
® Wire the cables referring to the Fig. 7-1.
@ Earth terminal
® Terminal block
@ Clamp
® Service panel
® Wire the cables so that they do not contact the center of the service panel or
the gas valve.
® Conduit mounting plates (_22 mm [7/8"]) are being provided. Pass the power
supply and signal wires through the appropriate knock-out holes, then remove
the knock-out piece from the bottom of the terminal box and connect the wires.
(Fig. 7-2)
C4_Fix power source wiring to terminal box by using buffer bushing for tensile force
(PG connection or the like).
® Wiring conduit (O.D. 1/2", procure locally)
Fig. 7-2
7.2. Branch box/outdoor wire connection and outdoor power supply cord connection
Z_ Warning:
•Be sure to attach the terminal block covers/panel of the outdoor unit securely. If it is not attached correctly, it could result in a fire or an electric shock due to
dust, water, etc.
•Be sure to connect the power supply cords and the connecting wires for the indoor units, outdoor units, and branch boxes directly to the units (no intermedi-
ate connections).
Intermediate connections can lead to communication errors if water enters the cords or wires and causes insufficient insulation to ground or a poor electrical
contact at the intermediate connection point.
Z_ Caution:
•Be careful not to make mis-wiring.
•Firmly tighten the terminal screws to prevent them from loosening.
•After tightening, pull the wires lightly to confirm that they not move.
If the connecting wire is incorrectly connected to the terminal block, the unit does not operate normally.
Loosenterminal screw.
.rL, "'"
block \l,L.eadwire_-_ /
Connection details
Connect wire from the branch box correctly to the terminal block.
• For future servicing, give extra length to connecting wire.
12

7. Electrical work
<Example> (In case of 2-branch boxes)
BranchboxM
(5-branchtype)
[-- ..... TB3A--I D , F_ln-d°°rLnit
Outdoor unit , _,l-t_;! f:_1 I A ROOM
rq ! _/
....... _i :_t
® _ _bl I
Circuit ' ' r_CG-_l t C, it TB2B TB3B I F-_-_-_
breaker I I_l p q L_ d£-1 i -(D_, ' £1% B ROOM
i
____,, ,_, ___'___=
_--i cROOM
IE °ROOM
II :
,-4q-- D I--=_=:-I
(C) I I I'_ I E ROOM
i.... @ i
'-11- _', _1
IL ....... ,
I I .......... Indoorunit
i i TB3A I ,_, I-- ....
I I I FROOM
IL :
I I TB3B I r--....
I I TB2B _ I G ROOM
IIL I li
TB3C I r--.... ,
I H ROOM
,,..... _o__j L£_:
Branch box_2
(3-branch type)
Fig. 7-3
7.3. External wiring procedure (Fig. 7-3)
The power supply work is needed only to the outdoor unit. The power supply to the
branch box or indoor unit is conducted through wiring.
Therefore, the power supply work can be carried out at just one spot of the outdoor
unit. It will contribute to simplifying the work and saving costs.
® Power supply single phase AC208/230 V, 60 Hz
Max. Permissive System Impedance 0.22 (_)
Note:
(_ Power supply input: Outdoor unit only.
Connect the lines (C), (D) in accordance with the terminal block names to
ensure correct polarity.
Wire diameter Breaker "1
(A) Mainpower (B) Ground (C) Signal line (D) Signal line interrupting Performance
line current characteristic
10.6 mm _ 10.6 mm_ 1.65 mm_ 1.65 mm_ 50 A, 30 mA for
5O A
AWG7 AWG7 AWG15 *2 AWG15 *2 0.1 sec. or less
Maximum circuit ampacity Maximum rating of over-current protector device
32 A 52 A
When using twisted wire for the wiring, the use of round terminal is required.
•1.A breaker with at least 3 mm [1/8"] contact separation in each pole shall be provided. Use
earth leakage breaker (NV).
•2. Max. 45 m (147ft.) ("Outdoor unit - Branchbox #1" plus "Branchbox #1 - Branchbox #2").
Notes:
1. Wiring sizes must comply with the applicable local and national code.
2. Use wires rated 600 V or more for the power supply cables and the indoor
unit/branch box/outdoor unit connecting cables.
3. Install ground wires longer than power cables.
4. Use separate conduit holes for power lines (3 lines) and signal lines (4 lines).
5. The inner diameter of a wiring conduit for the power line is required to be
more than 10.1 mm (7/16").
6. Since the distances between the fixing positions of the grounds for the sig-
nal lines and the terminal blocks for the signal lines are long, the ground
wires for the signal lines are 180 - 200 mm (7-1/16" - 7-7/8") longer than the
signal lines.
7. Use copper supply wires.
Z_, Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power
line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the Sl, S2, S3 terminals when the power
is energized. If isolator should be used between outdoor unit and branch box/indoor unit and branch box, please use 3-pole type.
Power supply
Isolator (Switch)
$1
Outdoor unit $2
$3
3 polesisolator(Switch)
Sl Sl _ ................................
S2 Branch S2
box
S3 S3
"A-control"
$2 Indoor unit
$3
13

8. Test run
8.1. Before test run
I_ After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power sup-
ply or control wiring, wrong polarity, and no disconnection of one phase
in the supply.
I_ Use a 500-volt M-ohm tester to check that the resistance between the
power supply terminals and ground is at least 1 MQ.
I_ Do not carry out this test on the control wiring (low voltage circuit) termi-
nals.
,/_ Warning:
Do not use the air conditioner if the insulation resistance is less than 1 MQ.
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below 1 M_ due to refrigerant accumulat-
ing in the compressor. This is not a malfunction. Perform the following procedures.
1. Remove the wires from the compressor and measure the insulation resistance of
the compressor.
2. If the insulation resistance is below 1 M& the compressor is faulty or the resis-
tance dropped due the accumulation of refrigerant in the compressor.
3. After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the compres-
sor. The resistance will rise above 1 M_ after the compressor is warmed up for 2
to 3 hours.
(The time necessary to warm up the compressor varies according to atmospheric
conditions and refrigerant accumulation.)
• To operate the compressor with refrigerant accumulated in the compressor, the
compressor must be warmed up at least 12 hours to prevent breakdown.
4. If the insulation resistance rises above 1 M& the compressor is not faulty.
Z_, Caution:
•The compressor will not operate unless the power supply phase connection
is correct.
• Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can result
in severe damage to internal parts. Keep the power switch turned on during the
operational season.
I_ The followings must be checked as well.
• The outdoor unit is not faulty. LED on the control board of the outdoor unit flash
when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
8.2. Test run
8.2.1. Using remote controller
Refer to the indoor unit installation manual.
• Be sure to perform the test run for each indoor unit. Make sure each indoor
unit operates properly following the installation manual attached to the unit.
• If you perform the test run for all indoor units at once, you cannot detect any
erroneous connection, if any, of the refrigerant pipes and the connecting
wires.
* The compressor operation is not available for 3 minutes at least after the
power is supplied.
• The compressor can emit noise just after turn on the power supply or in case
of low outside air temperature.
About the restart protective mechanism
Once the compressor stops, the restart preventive device operates so the com-
pressor will not operate for 3 minutes to protect the air conditioner.
8.2.2. Using SW4 in outdoor unit
SW4-1 ON
SW4-2 OFF
SW4-1 ON
SW4-2 ON
Cooling operation
Heating operation
* After performing the test run, set SW4-1 to OFF.
• A few seconds after the compressor starts, a clanging noise may be heard from
the inside of the outdoor unit. The noise is coming from the check valve due to
the small difference in pressure in the pipes. The unit is not faulty.
The test run operation mode cannot be changed by DIP switch SW4-2 dur-
ing the test run. (To change the test run operation mode during the test run,
stop the test run by DIP switch SW4-1. After changing the test run operation
mode, resume the test run by switch SW4-1.)
Note:
Be sure to wait at least 3minutes after turning on the power supply before
setting SW4-1 and SW4-2. If the DIP switches are set before 3 minutes has
elapsed, the test run may not start.
14

9. Special Functions
® ® ® ®
2........ "_r ................. -: F............
_i * [!
'"i ii I®1_!
l il i !
I® ....Ti_ / xii_lll II I
L............... i[ ............ ][............ j
i ® J _b
@ Remote control panel ¢) Procure locally
® Relay circuit @ Max. 10 m (33 ft.)
® External input adapter (PAC-SC36NA) ® Orange
@ Outdoor unit control board ® Brown
® Relay powersupply @ Red
Fig. 9-1
9.1. Low noise mode (on-site modification) (Fig. 9-1)
By performing the following modification, operation noise of the outdoor unit can be
reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
• The capacity may be insufficient according to the outdoor temperature and condi-
tions, etc.
@ Complete the circuit as shown when using the external input adapter (PAC-
SC36NA). (Option)
® ® ® ®
i-........ q m................. _ F............
!, !_ ,
i_i ! '
i ® '-Ti_ I i i _m-_-7_IiI t t t
i; i !
L..............._I.......'U_____i........ _L{d_.J
L ® I _)
@ Remotecontrol panel CF)Procurelocally
® Relaycircuit @ Max. 10m (33 ft)
® Externalinput adapter (PAC-SC36NA) ® Orange
@ Outdoor unit control board ® Brown
® Relay powersupply @ Red
Fig. 9-2
® ® ®
i........................... i-........... i "-...............
1o _ _btill l ®
,t!
L1 L2 I I i , CN51
! .............. ]i i
! [,-.............. i i ©4I_1
I I I
'® i i i
, ,, , i ®3I°1
,r
i i l I iIlii.I I
i ii I i
c i '--"
I®I..,,_ @ _
L1 : Error display lamp
L2 : Compressor operation lamp
X Y : Relay (Coil standard of 0.9W or less for DC 12V)
X Y: Relay(DClmA)
Fig. 9-3
® ® ®
........ !................................ _ F............... .
I '. I = i I I
e i T I i ! @1¢'_1!
I ' I i I I
, [ m21 l,
i i_.__-_._ _.7.__ _'-/ i_ lull
-----l--.....]-i / _ ! AL_I Im
iil i i
i .i y i i
e SW SW I
i it i i i
_.......................... 1................ ._ L............... .'
L ® J _@_
®
CN3S
!,ll
Fig. 9-4
9.2. Demand function (on-site modification) (Fig. 9-2)
• It is possible to reduce electricity consumption within a range from 0 to 100 per-
cent by performing the following on-site installation.
The demand function can be enabled by adding a commercially available input
contact point ON/OFF switch to the CNDM connector (the contact point demand
input, option).
@ Incorporate the "Adapter for external input (PAC-SC36NA)" into the circuit as
shown in the diagram on the left.
@ By switching SW7-1 on the control circuit board for the outdoor unit, the following
power consumption restrictions (compared to rated power) can be set.
SW7-1 Power consumption when SW2 is on
OFF 0% (Forced compressor stop)
ON 50%
9.3. Error and compressor operation monitoring function
(CN51)
@ Remote control panel
® Relay circuit
® External output adapter (PAC-SA88HA-E)
® Outdoor unit control board
® Lamp power supply
@ Procure locally
® Max. 10 m (33 ft.)
@ Orange
© Yellow
@ Green
9,4,
@ Remote control panel
® Relay circuit
® External input adapter (PAC-SC36NA)
® Outdoor unit control board
® Relay power supply
® Procure locally
® Max. 10 m (33 ff.)
Auto change over - Operation mode locking func-
tion by external signal (CN3S)
® Orange
® Brown
@ Red
ON OFF
SWl Heating Cooling
SW2 Validity of SWl Invalidity of SWl
* Any indoor unit that is operating in a mode different from the one specified by the
external signal will enter the standby mode.
* The setting becomes effective when the outdoor unit is under stop.
* The operation mode specified for the test run has priority over the mode specified
using this function.
15

Index
1. Consignes de securit6 ............................................ 16
2. Pieces et schema d'installation ..................................... 17
3. Emplacement d'installation ........................................ 18
4. Installation de I'appareil exterieur ................................... 20
5. Installation de la tuyauterie du refrig6rant ............................. 20
1. Consignes de sdcurit_
6. Mise en place du tuyau d'ecoulement ................................ 24
7. Installations electriques ........................................... 24
8. Marche d'essai ................................................. 28
9. Fonctions speciales ............................................. 29
1_ vant d'installer le climatiseur, lire attentivement toutes les "Consignes
de s_curite".
I_ Veuillez consulter ou obtenir la permission votre compagnie d'_lectricit_
avant de connecter votre syst_me.
z_ Avertissement:
Precautions a suivre pour _viter tout danger de blessure ou de decks de I'
utilisateur.
Z_ Precaution:
Decrit les precautions qui doivent 6tre prises pour eviter d'endommager I'
appareil.
Une fois I'installation terminee, expliquer les "Consignes de securit6", I'utilisation et
I'entretien de I'appareil au client conformement aux informations du mode d'emploi
et effectuer I'essai de fonctionnement en continu pour garantir un fonctionnement
normal. Le manuel d'installation et le mode d'emploi doivent _tre foumis & I'utili-
sateur qui dolt les conserver. Ces manuels doivent egalement _tre transmis aux
nouveaux utilisateurs.
_: Indique un el6ment qui dolt _tre mis a la terre.
Avertissement:
Prendre soin de lire les _tiquettes se trouvant sur I'appareil principal.
Z_ Avertissement:
• L'appareil ne dolt pas 6tre install_ par I'utilisateur. Contacter un revendeur
ou un technicien agree pour installer I'appareil. Si I'appareil n'est pas cor-
rectement installe, des fuites d'eau, des chocs _lectriques ou des incendies
peuvent se produire.
• Pour I'installation, respecter les instructions du manuel d'installation et
utiliser des outils et des composants de tuyau sp_cialement con£:us pour
une utilisation avec le refrigerant R410A.
• La pression du r_frigerant R410A du systeme HFC est 1,6 fois sup_rieure &
celle des r_frig_rants traditionnels. Si des composants de tuyau non adap-
tes au refrigerant R410A sont utilises et si I'appareil n'est pas correctement
instatle, les tuyaux peuvent eclater et provoquer des dommages ou des
blessures. Des fuites d'eau, des chocs electriques et des incendies peuvent
_galement se produire.
• L'appareil dolt 6tre install_ conform_ment aux instructions pour r_duire les
risques de dommages lies a des tremblements de terre, des typhons ou
des vents violents. Une installation incorrecte peut entrainer la chute de I'
appareil et provoquer des dommages ou des blessures.
• L'appareil dolt 6tre solidement install_ sur une structure pouvant supporter
son poids. Si I'appareil est fix_ sur une structure instable, il risque de
tomber et de provoquer des dommages ou des blessures.
• Si le climatiseur est install_ dans une petite piece, certaines mesures doi-
vent 6tre prises pour _viter que la concentration de r_frig_rant ne d_passe
le seuil de securit_ en cas de fuite. Consulter un revendeur pour obtenir les
mesures ad_quates et ainsi eviter de d_passer la concentration autoris_e.
En cas de fuite de r_frig_rant et de d_passement du seuil de concentration,
des risques li_s au manque d'oxygene dans la piece peuvent survenir.
• Aerer la piece en cas de fuite de r_frigerant Iors de I'utilisation. Le contact du
r_frigerant avec une flamme peut provoquer des emanations de gaz toxiques.
• Toutes les installations electriques doivent 6tre effectu_es par un technicien
qualifie conform_ment aux reglementations locales et aux instructions
fournies dans ce manuel. Les appareils doivent 6tre alimentes par des lignes
_lectriques adaptees. Utiliser la tension correcte et des coupe-circuits. Des
lignes _tectriques de capacit_ insuffisante ou des installations _lectriques
incorrectes peuvent provoquer un choc electrique ou un incendie.
• Veiller a relier les cordons d'alimentation et les ills de raccordement des
appareils interieurs, des appareils ext_rieurs et des boitiers de d_rivation
directement sur les appareils (sans raccordement interm_diaire).
Les raccordements interm_diaires peuvent engendrer des erreurs de com-
munication si de I'eau s'infiltre darts les cordons et les fils et provoquent
une isolation insuffisante de la mise a la terre ou un mauvais contact
electrique au niveau du point de raccordement intermediaire.
(Si un raccordement interm_diaire s'avere n_cessaire, veiller a prendre des
mesures pour eviter que de l'eau ne s'infiltre dans les cordons et les fils.)
• Utiliser le cuivre phosphoreux C1220, pour des tuyaux sans soudure en cui-
vre et en alliage de cuivre, pour raccorder les tuyaux de refrigerant. Si les
tuyaux ne sont pas correctement raccordes, la mise a la terre de I'appareil
ne sera pas conforme et des chocs _lectriques peuvent se produire.
• N'utiliser que les c&bles specifi_s pour les raccordements. Les connexions
doivent 6tre correctement effectu_es sans tension sur les bornes. Si les
c&bles ne sont pas correctement connect_s ou install_s, une surchauffe ou
un incendie peut se produire.
• Le couvercle du bloc de sortie de I'appareil ext_rieur dolt 6tre solidement
fix& S'il n'est pas correctement installe et si des poussi_res et de I'humidite s'
infiltrent dans I'appareil, un choc electrique ou un incendie peut se produire.
• Lors de I'installation ou du deplacement du climatiseur, n'utitiser que le
r_frigerant sp_cifie (R410A) pour remplir les tuyaux de r_frigerant. Ne pas
le m_langer avec un autre refrigerant et faire le vide d'air dans les tuyaux.
La presence d'air dans les tuyaux peut provoquer des pointes de pression
entrainant une rupture et d'autres risques.
• N'utiliser que les accessoires agrees par Mitsubishi Electric et contacter un
revendeur ou un technicien agree pour les installer. Si les accessoires ne
sont pas correctement install_s, une fuite d'eau, un choc _lectrique ou un
incendie peut se produire.
• Ne pas changer I'appareil. Consulter un revendeur en cas de reparations. Si
les modifications ou r_parations ne sont pas correctement effectu_es, une
fuite d'eau, un choc electrique ou un incendie peut se produire.
• L'utilisateur ne dolt jamais essayer de r_parer ou de d_placer I'appareil.
Si I'appareil n'est pas correctement installS, des fuites d'eau, des chocs
electriques ou des incendies peuvent se produire. Si le climatiseur dolt 6tre
r_pare ou deplac_, contacter un revendeur ou un technicien agr_&
• Une fois I'installation termin_e, v_rifier les eventuelles fuites de r_frig_rant.
Si le refrigerant fuit darts la piece et entre en contact avec la flamme d'un
chauffage ou d'une cuisini_re, des gaz toxiques peuvent se d_gager.
1.1. Avant I'installation
Precaution:
•Ne pas utiliser I'appareil dans un environnement inhabituet. Si le climati-
seur est install_ dans des endroits exposes ala vapeur, aI'huile volatile
(notamment I'huile de machine), au gaz sulfurique, aune forte teneur en sel,
par exemple, alamer, ou dans des endroits ou I'appareil sera recouvert de
neige, tes performances peuvent considerablement diminuer et les pieces
internes de I'appareil _tre endommag_es.
•Ne pas installer I'appareil dans des endroits o_ des gaz de combustion peuvent
s'echapper, se degager ou s'accumuler. L'accumulation de gaz de combustion
autour de I'appareil peut provoquer un incendie ou une explosion.
• L'appareil exterieur produit de la condensation Iors du fonctionnement du
chauffage. Pr_voir un systeme de drainage autour de I'appareil ext_rieur au
cas ou la condensation provoquerait des dommages.
• Lors de I'installation de I'appareil dans un h6pital ou un centre de
communications, se preparer au bruit et aux interferences electroniques.
Les inverseurs, les appareils _tectrom_nagers, les _quipements medicaux
haute fr_quence et de communications radio peuvent provoquer un
dysfonctionnement ou une d_faillance du climatiseur. Le climatiseur peut
egalement endommager les _quipements medicaux et de communications,
perturbant ainsi les soins et reduisant la qualite d'affichage des ecrans.
1.2. Avant I'installation (deplacement)
Precaution:
•Transporter les appareils avec precaution. L'appareil doit _tre transporte
par deux personnes ou plus, car il pese 20 kg, 44 Ibs minimum. Portez des
gants de protection pour sortir I'appareil de son emballage et pour le deplacer,
car vous risquez de vous blesser les mains sur les ergots ou les ar_tes des
autres pi_ces.
•Veiller a _liminer le mat_riet d'emballage en toute securit& Le mat_riet d'
emballage (clous et autres pi_ces en m_tal ou en bois) peut provoquer des
blessures.
16
•La base et les fixations de I'appareil exterieur doivent 6tre verifiees regu-
lierement pour _viter qu'elles ne se desserrent, se fissurent ou subissent
d'autres dommages. Si ces defauts ne sont pas corriges, I'appareil peut
tomber et provoquer des dommages ou des blessures.
• Ne pas nettoyer le climatiseur & I'eau au risque de provoquer un choc
electrique.
• Serrer les _crous evas_s, conformement aux specifications, & t'aide d'une
cl_ dynamom_trique. Si les _crous sont trop serr_s, ils peuvent se casser
apres un certain temps et provoquer une fuite de refrigerant.

1. Consignes de sdcurit_
1.3. Avant I'installation electrique
_, Precaution:
• Veiller ainstaller des coupe-circuits. Dans le cas contraire, un choc _lectri-
que peut se produire. •Pour les lignes electriques, utiliser des c&bles standard de capacite suffi- sante. Dans le cas contraire, un court-circuit, une surchauffe ou un incen-
die peut se produire.
• Lors de I'installation des lignes electriques, ne pas mettre les c&bles sous
tension. Si les connexions sont desserrees, les c&bles peuvent se rompre
et provoquer une surchauffe ou un incendie.
• Veiller a mettre I'appareil a la terre. Ne pas relier le fil de terre aux conduites
de gaz ou d'eau, aux paratonnerres ou aux lignes de terre t_lephoniques. Une
mise a la terre incorrecte de I'appareil peut provoquer un choc electrique.
• Utiliser des coupe-circuits (disjoncteur de fuite a la terre, interrupteur d'iso-
lement (fusible +B) et disjoncteur a boitier moule) a la capacite sp_cifiee. Si
la capacit_ du coupe-circuit est superieure a celle sp_cifiee, une defaillance
ou un incendie peut se produire.
1.4. Avant la marche d'essai
Precaution:
•Activer I'interrupteur principal au moins 12 heures avant la mise en fonc-
tionnement de I'appareil. L'utilisation de I'appareil juste apr_s sa mise sous
tension peut endommager serieusement les pi_ces internes. Laisser l'inter-
rupteur activ_ pendant la p_riode d'utilisation.
• Avant d'utiliser I'appareil, verifier que tousles panneaux, toutes les protec-
tions et les autres pi_ces de securite sont correctement installes. Les pi_ces
tournantes, chaudes ou a haute tension peuvent provoquer des blessures.
• Ne pas toucher les interrupteurs les mains humides au risque de provoquer
un choc electrique.
• Ne pas toucher les tuyaux de refrigerant les mains nues Iors de I'utilisation.
Les tuyaux de refrigerant sont chauds ou froids en fonction de I'etat du
refrigerant qu'ils contiennent. Toucher les tuyaux peut provoquer des bre-
lures ou des gelures.
• A la fin de I'utilisation de I'appareil, attendre au moins cinq minutes avant
de desactiver I'interrupteur principal. Dans le cas contraire, une fuite d'eau
ou une defaillance peut se produire.
1.5. Utilisation de climatiseurs utilisant le refrigerant R410A
Precaution
• Utiliser le cuivre phosphoreux C1220, pour des tuyaux sans soudure en cuivre
et en alliage de cuivre, pour raccorder les tuyaux de refrigerant. Verifier que
I'interieur des tuyaux est propre et depourvu de tout agent nocif tel que des
composes sulfuriques, des oxydants, des debris ou des saletes. Utiliser des
tuyaux d'epaisseur specifiee. (Se reporter ala page 20). Respecter les instruc-
tions suivantes en cas de reutilisation de tuyaux de refrigerant R22 existants.
- Remplacer lee ecrous evases existants et evaser de nouveau lee sections evasees.
- Ne pas utiliser de tuyaux fins. (Se reporter & la page 20)
• Stocker a I'interieur les tuyaux a utiliser pendant I'installation et couvrir
les deux extr_mit_s jusqu'au processus de brasage. (Laisser les joints de
coude, etc. dans leur emballage.) L'infiltration de poussieres, de debris ou d'
humidite dans les tuyaux de r_frig_rant peut affecter la qualite de I'huile ou
endommager le compresseur.
• Appliquer une petite quantite d'huile ester, _ther ou alkylbenzene comme
huile r_frig_rante sur les sections evas_es. Le melange d'huile min_rale et d'
huile r_frig_rante peut affecter la qualit_ de I'huile.
2. Pi_ces et schdma d'installation
• Ne pas utiliser un r_frigerant autre que le refrigerant R410A. Si c'est le cas,
le chlore peut affecter la qualite de I'huile.
• Utiliser les outils suivants sp_cialement con_:us pour une utilisation avec le
refrigerant R410A. Les outils suivants sont necessaires pour utiliser le r_fri-
g_rant R410A. En cas de questions, contacter le revendeur le plus proche.
Outils (pour R410A)
Collecteur jauge Outil d'evasement
Tuyau de charge Jauge de reglage de la taille
Detecteur de fuite de gaz Adaptateur pour pompe a vide
Cle dynamometrique Echelle electronique de charge de refrigeranl
• Veiller a utiliser les outils adapt_s. L'infiltration de poussieres, de d_bris ou
d'humidite dans les tuyaux de r_frigerant peut affecter la qualite de I'huile
r_frigerante.
• Ne pas utiliser un cylindre de charge. L'utilisation d'un cylindre de charge
peut modifier la composition du r_frigerant et r_duire son efficacit_.
2.1. Avant I'installation (Fig. 2-1)
Apparel+ exterieur
@
Fig. 2-1
Bokierde derivation
IType a 5 embranchementsJ
Type a 3 embranchementsJ
Toutes modifications structurelles requises pour I'installation doivent _tre confor-
mes au code du b_timent local en vigueur.
Ce schema vise a montrer la configuration des accessoires.
Dans le cadre d'une installation reelle, I'appareil exterieur dolt _tre tourne de 180°.
Les appareils doivent _tre installes par des foumisseurs qualifies conformement
la reglementation locale.
Remarque :
Les dimensions indiquees au-dessus des fleches sont indispensables pour
garantir les performances du climatiseur. Installer I'appareil dans un empla-
cement aussi spacieux que possible pour faciliter son entretien ou ses repa-
rations ulterieurement.
Pieces a acheter Iocalement
Fil de raccordement du bo?tier de derivation/de I'appareil exterieur
(3 conducteurs, se reporter a ta section 7.3. Procedure de c_blage exteme.) 1
Tuyau d'extension 1
Manchon d'ouverture murale 1
Gaine d'ouverture murale 1
Bande de fixation de tuyau (la quantit_ d_pend de la Iongueur du tuyau.) 2 _ 7
Vis de fixation pour _4 x 20 mm (13/16")
(la quantite depend de la Iongueur du tuyau.) 2 &7
Ruban adhesif de tuyauterie 1
_) Mastic 1
OTuyau de vidange (Tuyau en PVC dur O.D. 20 mm (13/16")) 1
Huile refrigerante 1
Cordon d'alimentation
(2 conducteurs, se reporter a ta section 7.3. Procedure de c&blage externe.) 1 17

3. Emplacement d'installation
3.1. Tuyaux de r_frigerant
Se reporter a la section 5.2. Longueur de tuyau et difference de hauteur.
18
o
03
@
Fig. 3-1
Fig. 3-2 @
Fig. 3-4
Fig. 3-3
mm(pouce)
3.2. Selection de I'emplacement d'installation de I'ap-
pareil exterieur
•Eviter les endroits exposes au rayonnement solaire direct ou a d'autres sources
de chaleur.
• Selectionner un endroit oQ le bruit de I'appareil n'incommodera pas le voisinage.
• Selectionner un endroit permettant un acc_s facile des cables et tuyaux a la
source d'alimentation et _ I'appareil interieur.
• Eviter les endroits exposes a des risques de fuite, d'echappement ou d'accumu-
lation de gaz.
• Ne pas oublier que des gouttes d'eau peuvent couler de I'appareil Iors de son
utilisation.
• Selectionner un endroit de niveau pouvant supporter le poids et les vibrations de I'
appareil.
• Eviter les endroits oQ I'appareil peut _tre recouvert de neige. Darts les zones oQ les
chutes de neige importantes sont previsibles, certaines pr6cautions (par ex., relever I'
emplacement d'installation ou installer une hotte sur I'arrivee d'air) doivent _tre prises
pour 6viter que la neige ne bloque I'arrivee d'air ou ne tombe directement dessus. La
circulation de I'air risque de diminuer et d'entrafner un dysfonctionnement.
• Eviter les endroits exposes a I'huile, a la vapeur ou au gaz sulfurique.
• Utiliser les poignees de transport (quatre emplacements a gauche, _ droite, _ I'
avant et _ I'arri_re) de I'appareil exterieur pour le deplacer. Transporter I'appareil
par le bas peut provoquer des pincements aux mains ou aux doigts.
3.3. Dimensions exterieures (Appareil exterieur) (Fig. 3-1)
Contraintes concernant I'installation d'un appareil int_rieur
Voici les modeles d'appareils interieurs qu'il est possible de relier a cet appareil
exterieur.
• Les appareils interieurs ayant pour numero de module 06, 09, 12, 15, 18, 24,
30 peuvent _tre raccordes. Se reporter au tableau ci-apres pour connaftre les
combinaisons possibles de 2 a 8 appareils interieurs individuels.
Verification
Determiner la capacite nominale en respectant les donnees figurant dans le tableau
ci-apres. L'appareil exterieur ne prend en charge que de 2 _ 8 appareils interieurs.
Pour I'etape suivante, veiller _ ce que la capacite nominale totale selectionn6e soit
comprise entre 12 et 70,2 kBTU/h.
Exemple:
MSZ-18 = 18
+
SEZ-12 = 12
+
SLZ-12 = 12
+
SEZ-09 = 9
+
SLZ-09 = 9
Capacite nominale totale
60 <[70 kBTU/h I
Type d'appareil interieur 06 09 12 15 18 24 30
Capacite nominale 6 9 12 15 18 24 30
refroidissement) (kBTU/h)
Dans les combinaisons dans lesque!les la capacite totale des appareils interieurs
est superieure _ la capacite de I'appareil exterieur (= 54,0 kBTU/h), la capacite
de refroidissement de chaque appareil interieur sera reduite en dessous de sa
capacite de refroidissement nominale. Par consequent, combiner des appareils
interieurs _ un appareil exterieur sans depasser la capacite de ce dernier (= 54,0
kBTU/h), si possible.
3.4. Ventilation et espace de service
3.4.1. Installation _un endroit expos_ au vent
Lots de I'installation de I'appareil exterieur sur un toit ou a d'autres endroits non
proteges du vent, diriger la sortie d'air de I'appareil vers le c6te qui n'est pas direc-
tement expose aux vents forts. Le vent soufflant dans la sortie d'air peut emp_cher I'
air de circuler normalement et provoquer un dysfonctionnement.
Voici trois exemples de precautions _ prendre.
d) Positionner la sortie d'air vers le tour le plus proche eta environ 50 cm (19-11/16")
de celui-ci. (Fig. 3-2)
® Installer un guidage d'air optionnel si I'appareil est place darts un endroit oQ les
vents violents d'un typhon par exemple pourraient s'engouffrer directement dans
la sortie d'air. (Fig. 3-3)
@ Guidage d'air
® Placer I'appareil de sorte que la sortie d'air souffle dans la direction perpendicu-
lake _ celle des vents saisonniers, si celle-ci est connue. (Fig. 3-4)
® Sens du vent

3. Emplacement d'installation
...._ii iiiiiiii;__ ;03
q,-
(pouce)
'_'_" _
Fig. 3-5 Fig. 3-6 Fig. 3-7 Fig. 3-8
Fig. 3-9 Fig. 3-10 Fig. 3-11
Fig. 3-12 Fig. 3-13 Fig. 3-14
Fig. 3-15 Fig. 3-16 Fig. 3-17
3.4.2. Lors de rinstallation d'un seul appareil ext_rieur
Le dimensions minimales sont les suivantes, & I'exception des valeurs Max.,
indiquant les dimensions maximales.
Utiliser les chiffres pour chaque cas.
q_ Obstacles uniquement & I'arri_re (Fig. 3-5)
® Obstacles uniquement & I'arri_re et au-dessus (Fig. 3-6)
® Obstacles uniquement & I'arri_re et sur les cStes (Fig. 3-7)
C4_Obstacles uniquement & I'avant (Fig. 3-8)
Lors de I'utitisation les guidages de sortie d'air en option, le jeu est de 19-11/16" (500 mm)
minimum.
C5_Obstacles uniquement & I'avant et & I'arri_re (Fig. 3-9)
Lors de I'utitisation les guidages de sortie d'air en option, le jeu est de 19-11/16" (500 mm)
minimum.
® Obstacles uniquement & I'arri_re, sur les c6tes et au-dessus (Fig. 3-10)
•Ne pas utiiiser les guidages de sortie d'air en option pour un debit d'air vers le haut.
3.4.3. Lors de rinstallation de plusieurs appareils ext_rieurs
Espacer les appareils de 3/8" (10 mm) minimum.
_Obstacles uniquement & I'arriere (Fig. 3-11 )
_Obstacles uniquement & I'arriere et au-dessus (Fig. 3-12)
• Ne pas installer c6te a cSte plus de trois appareils. Espacer egalement les appareils, comme
illustre.
• Ne pas utitiser tes guidages de sortie d'air en option pour un debit d'air vers le haut.
(_Obstacles uniquement & I'avant (Fig. 3-13)
* Lors de I'utilisation les guidages de sortie d'air en option, le jeu est de 39-3/8" (1000 ram)
minimum.
_Obstacles uniquement & I'avant et & I'arri_re (Fig. 3-14)
* Lors de I'utilisation les guidages de sortie d'air en option, le jeu est de 39-3/8" (1000 ram)
minimum.
(_ Disposition pour un seul appareil parallele (Fig. 3-15)
* Lors de I'utitisation les guidages de sortie d'air en option instatle pour un debit d'air vers le
haut, le jeu est de 39-3/8" (1000 ram) minimum.
@ Disposition pour plusieurs appareils paralleles (Fig. 3-16)
* Lors de I'utitisation les guidages de sortie d'air en option installe pour un debit d'air vers le
haut, le jeu est de 59-1/16" (1500 mm) minimum.
L_ Disposition pour appareils empiles (Fig. 3-17)
• II est possible d'empiler jusqu'a deux appareits.
• Ne pas installer c6te a cSte plus de deux appareits empiles. Espacer egalement les appa-
reils, comme itlustre. 19

4. Installation de I'appareil ext_rieur
(pouce) • Bien installer I'appareil sur une surface solide et de niveau, de fa_on & eviter tout
bruit de crecelle pendant le fonctionnement. (Fig. 4-1 )
<Specifications de la fondation>
Boulon de fondation M10 (3/8 _me de pouce)
Epaisseur de beton 120 mm (4-23/32 eme de pouce)
Longueur des boulons 70 mm (2-3/4 _me de pouce)
Resistance au poids 320 kg (705 Ibs)
®
@ Boulon M10 (3/8 eme de pouce)
® Base
© Aussi long que possible.
© Ventilateur
® Profondement enfonce dans la terre
I23-5/8 Min. 14-6/32 23-5/8
!
Min. 13/32 6_7/8 6-7/8 _
37- 13/32
Fig. 4-1
5. Installation de la tuyauterie du r_frig_rant
• S'assurer que la Iongueur des boulons de fondation ne depasse pas 30 mm
(1-3/16") par rapport a la surface inferieure de la base.
• Fixer fermement la base de I'appareil avec quatre boulons de fondation M10 pla-
ces a des endroits suffisamment robustes.
Installation de I'appareil exterieur
• Ne pas bloquer le ventilateur. Si le ventilateur est bloque, I'appareil sera ralenti et
risque d'etre endommag&
• Pour installer I'appareil, utiliser, si necessaire et en plus de la base de I'appareil,
les orifices d'installation situes & I'arri_re pour fixer les cables, etc. Utiliser des vis
autotaraudeuses (_5 x 15 mm, _13/16" x 19/32" maximum) et installer I'appareil
sur site.
Z_, Avertissement:
• L'appareil dolt 6tre solidement installe sur une structure pouvant supporter
son poids. Si I'appareil est fix_ sur une structure instable, il risque de tom-
beret de provoquer des dommages ou des blessures.
• L'appareil dolt 6tre install_ conform_ment aux instructions pour reduire les
risques de dommages lies a des tremblements de terre, des typhons ou des
vents violents. Une installation incorrecte peut entrainer la chute de l'appa-
reil et provoquer des dommages ou des blessures.
@ Appareil exterieur
® Bottler de derivation
F'_ © Appareillnt6rieur
.I hl ai!! a_.._L_ _ ._FJ!_
.......i]i..........
Fig. 5-1
5.1. Consignes pour appareils utilisant le refrigerant R410A
• Se reporter a la page 17 pour les consignes non reprises ci-dessous concernant I'
utilisation de climatiseurs avec un refrig6rant R410A.
• Appliquer une petite quantite d'huile ester, ether ou alkylbenzene comme huile
refrig6rante sur les sections evas6es.
• Utiliser le cuivre phosphoreux C1220, pour des tuyaux sans soudure en cuivre et
en alliage de cuivre, pour raccorder les tuyaux de refrig6rant. Utiliser les tuyaux
de refrig6rant dont I'epaisseur est specifi6e dans le tableau ci-dessous. Verifier
que I'interieur des tuyaux est propre et depourvu de tout agent nocif tel que des
composes sulfuriques, des oxydants, des debris ou des saletes.
Z_ Avertissement:
Lors de I'installation ou du d_placement du climatiseur, n'utiliser que le re-
frigerant specifi_ (R410A) pour remplir les tuyaux de r_frigerant. Ne pas le
m_langer avec un autre r_frig_rant et faire le vide d'air dans les tuyaux. La
presence d'air dans les tuyaux peut provoquer des pointes de pression en-
trainant une rupture et d'autres risques.
_6,35 mm (1/4 pouce), _9,52 mm (3/8 pouce), Epaisseur 0,8 mm (1/32 pouce)
_12,7 mm (1/2 pouce)
_15,88 (5/8 pouce) E_paisseur 1,0 mm (5/128 pouce)
• Ne pas utiliser de tuyaux plus fins que ceux specifies ci-dessus.
bl+b2+al +a2+a3+a4+a5+a6+a7+a8<115m(377ft.)
b2 + a8 < 70 m (230 ft.) (b2 < 55 m (180 ft.), a8 < 15 m (49 ft.))
Longueur admise bl + b2 < 55 m (180 ft.)
(un sens) a8 < 15 m (49 ft.)
a1+a2+a3+a4+a5+a6+a7+a8<60m(197ft.)
Longueur de tuyau totale
Longueur de tuyau maximum (L)
Longueur de tuyau entre I'appareil exterieur et les boftiers de derivation
Longueur de tuyau maximum apres le bottler de derivation (I)
Longueur de tuyau totale entre les bottlers de derivation et les
appareils interieurs
Dans la section interieure/exterieure (H) "1
Difference de
hauteur admise Dans la section boftier de derivation/appareil interieur (hl)
(un sens) Dans chaque appareil de derivation (h2)
Dans chaque appareil interieur (h3)
Nombre de coudes
"1 Placer le bottler de derivation & une hauteur comprise entre celle de I'appareil exterieur et des appareils interieurs.
H < 30 m (98 ft.) (Si I'appareil exterieur est place plus haut que I'appareil interieur)
H < 20 m (66 ft.) (Si I'appareil exterieur est place plus bas que I'appareil interieur)
hl + h2 < 15 m (49 ft.)
h2<15m(49ft.)
h3<12m(39ft.)
I bl+al I, I bl+a2 I, I bl+a3 I, I bl+a4 I, I bl+a5 I, I b2+a6 I, I b2+a7 I, I b2+a8 I < 15
5.2. Longueur de tuyau et difference de hauteur (Fig. 5-1)
Raccordements _vas_s
• Cet appareil int_gre des raccordements evases de chaque c6te des appareils interieurs, du bottler de derivation et de I'appareil exterieur.
• Retirer le couvercle de soupape de I'appareil exterieur, puis raccorder le tuyau.
• Les tuyaux de refrigerant servent a raccorder le bottler de derivation et I'appareil exterieur.
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