Samsung Duct Type Series User manual

Duct Type Series
BIG duct : AM✴✴✴FNHDCH✴
Air Conditioner
installation manual
imagine the possibilities
Thank you for purchasing this Samsung product.

2
Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Accessories .............................................................................................................. 5
Selecting the Installation Location ....................................................................................... 6
Indoor Unit Installation .................................................................................................. 9
Purging the Unit ........................................................................................................ 10
Connecting the Refrigerant Pipe ........................................................................................ 10
Cutting/Flaring the Pipes ................................................................................................ 11
Performing leak test & insulation ........................................................................................ 12
Drain pipe and drain hose installation ................................................................................... 15
Wiring work ............................................................................................................ 19
Setting an indoor unit address and installation option ................................................................... 23
Setting temperature control of discharge air ............................................................................ 36
Final Checks and UserTips .............................................................................................. 36
Troubleshooting ........................................................................................................ 37
Option table ............................................................................................................ 39

3
ENGLISH
Safety Precautions
WARNING
• Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
The following safety precautions must be taken when using your air conditioner.
WARNING
• Risk of electric shock can cause injury or death.
• Disconnect all remote electric power supplies before servicing, installing or cleaning.
• Installation must be done by the manufacturer or service agent or a similar qualied
person in order to avoid a hazard.
Installing the unit
f The unit should not be installed by the user. Ask the dealer or authorized company to install the units
f If the unit is installed improperly, water leakage, electric shock or re may result.
f Mount with the lowest moving parts at least 2.5 m (8.2 ft) above the oor or grade level. (If applicable)
f The manufacturer does not assume responsibility for accidents or injury caused by an incorrectly installed air conditioner.
If you are unsure about installation, contact an installation specialist.
f When installing the built-in type air conditioner, keep all electrical cables such as the power cable and the connection
cord in pipe, ducts, cable channels e.t.c to protect them against liquids, outside impacts and so on. The air conditioner
should be used only for the applications for which it has been designed: the indoor unit is not suitable to be installed in
areas used for laundry.
f This appliance is not accessible to the general public. This appliance should be installed according to the provided
installation instruction.
f When installing the air conditioner in a small room, the measure not to exceed the dangerous density is needed.
- When refrigerant leaks and exceeds the dangerous density, suocation may occur.
f If any gas or impurities except R-410A refrigerant come into the refrigerant pipe, serious problem may occur and it may
cause injury.
f Use only rated accessories and install the air conditioner with rated equipments.
- If you dont’t use the rated accessories, the air conditioner may drop from its place, water may leak or electric shock or
re may occur.
f Ventilate your room when refrigerant gas leaks during installation.
- Toxic gas may generate when refrigerant gas contacts with heat.
f Our units must be installed in compliance with the spaces indicated in the installation manual to ensure either
accessibility from both sides or ability to perform routine maintenance and repairs. The units’components must be
accessible and that can be disassembled in conditions of complete safety either for people or things.
For this reason, where it is not observed as indicated into the Installation Manual, the cost necessary to reach and repair
the unit (in safety, as required by current regulations in force) with slings, trucks, scaolding or any other means of
elevation won’t be considered in-warranty and charged to end user.
f This unit is intended for free-air discharge or for connection to a duct supplying only one room.

4
Safety precautions
Power supply line or circuit breaker
f If the power cable of this air conditioner is damaged, it must be replaced by service agent or similarly qualied persons in
order to avoid a hazard.
f The unit must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit
breaker. An all pole disconnection from the power supply must be incorporated in the xed wiring with a contact
opening of >3 mm (0.12 inch).
f The air conditioner must be installed in accordance with national wiring regulations and safety regulations wherever
applicable.
f The electric work must be done by service agent or similarly qualied persons according to national wiring regulations
and use only rated cable.
- If the capacity of the power cable is insucient or electric work is not properly completed, electric shock or re may
occur.
f Install the cables with supplied cables rmly. Fix them securely so that external force is not exerted to the terminal board.
- If the connection or xing is incomplete, heat generation, electric shock or re may occur.
f Connect the power cable between the indoor and outdoor unit properly so that the electrical component box cover is
not get loosen and attach the cover securely.
- If the the cover is attached incompletely, heat generation, electric shock or re of the terminal board may occur.
f Be sure not to perform power cable modication, extension wiring, and multiple wire connection.
- It may cause electric shock or re due to poor connection, poor insulation, or current limit override.
- When extension wiring is required due to power line damage, refer to “How to connect your extended power cables”in
the installation manual.
• Make sure that you earth the cables.
- Do not connect the earth wire to the gas pipe, water pipe, lighting rod or telephone wire. If earthing is not
complete, electric shock or re may occur.
• Install the circuit breaker.
- If the circuit breaker is not installed, electric shock or re may occur.
• Make sure that the condensed water dripping from the drain hose runs out properly and safely.
• Install the power cable and communication cable of the indoor and outdoor unit at least 1 m (3.28 ft) away from
the electric appliance.
• Install the indoor unit away from lighting apparatus using the ballast.
- If you use the wireless remote control, reception error may occur due to the ballast of the lighting apparatus.
• Do not install the air conditioner in following places.
- Place where there is mineral oil or arsenic acid. Resin parts ame and the accessories may drop or water may
leak. The capacity of the heat exchanger may reduce or the air conditioner may be out of order.
- The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet. The copper
pipe or connection pipe may corrode and refrigerant may leak.
- The place where there is a machine that generates electromagnetic waves. The air conditioner may not
operate normally due to control system.
- The place where there is a danger of existing combustible gas, carbon ber or ammable dust.The place
where thinner or gasoline is handled. Gas may leak and it may cause re.
CAUTION

5
ENGLISH
Accessories
The following accessories are supplied with the indoor unit.
The type and quantity may dier depending on the specications.
User's manual Installation manual Pattern sheet Insulation cover pipe in
Insulation cover pipe out Pipe insulation (A) Pipe insulation (B) Cable tie
Flexible hose Clamp hose Washer Rubber
Sleeve

6
Selecting the Installation Location
Indoor Unit
f There must be no obstacles near the air inlet and outlet.
f Install the indoor unit on a ceiling that can support its weight.
f Maintain sucient clearance around the indoor unit.
f Make sure that the water dripping from the drain hose runs away correctly and safely.
f The indoor unit must be installed in this way, that they are out of public access. (Not touchable by the users)
f After connecting a chamber, insulate the connection part between the indoor unit and the chamber with t10 mm(3/8")
or thicker insulation. Otherwise, there can be air leak or dew from the connection part.
f Rigid wall without vibration.
f Where it is not exposed to direct sunshine.
f Where the air lter can be removed and cleaned easily.
Space requirements for installation & service
Unit Width(W)
“A”=W+100 mm(3.94 inch)
“B”=500 mm(19.69 inch)
Unit Depth(D)+50 mm (1.97 inch)
20 mm(0.79 inch) or more
20 mm(0.79 inch) or more
f You must have 20 mm(0.79 inch) or more space between the ceiling and the bottom of indoor unit. Otherwise, the noise
from the vibration of indoor unit may bother the user. When the ceiling is under construction, the hole for check-up must
be made to take service, clean and repair the unit.
f It is possible to install the unit at an height of between 2.2(7.22 ft) ~ 2.5 m(8.20 ft) from the ground, if the unit has a duct
with a well dened lenght[300 mm(0.98 ft) or more], to avoid fan motor blower contact.

7
ENGLISH
Insulation Guide
A
Front
C
B
Back
D
Front
Back
Thickness: more than 10 mm(0.39inch)
mm(inch)
Indoor Unit A B C D Front/Back
1240x470x1040
(48.8x18.5x40.9)
400x190
(15.7x7.5)
1240x1040
(48.8x40.9)
470x1040
(18.5x40.9)
470x1040
(18.5x40.9)
Insulate the front and back side in proper
size at the same time when insulating the
suction duct and discharge duct.
f Insulate the end of the pipe and some curved area by using separate insulation.
f Insulate the discharge and suction part at the same time when you insulate connection duct.

8
Selecting the Installation Location
Drawing of the indoor unit
Unit : mm(inch)
140X8=1120(44.09)
1306(51.42) Suspension position
1188(46.77) Air inlet duct ange
1188(46.77) Air outlet duct ange
Discharge side Suction side
1040(40.94)
140X8=1120(44.09)
34
1240(48.82)
OD Ø32
35
470(18.50)
660(25.98)
647(25.47)
598(23.54)
29(1.14)
93
(3.66)
22(0.87)
209(8.23)
236(9.29)
385(15.16)
100X2=200
(7.87)
914 Suspension position
No. Name Description
①Liquid pipe connection ø9.52(3/8")
②Gas pipe connection AM076✴✴✴ : ø19.05(3/4")
AM096✴✴✴ : ø22.22(7/8")
③Drain pipe connection VP25[OD ø32(1.26"), ID ø25(0.98")]
④Drain pipe connection (Option drain pump) VP25[OD ø32(1.26"), ID ø25(0.98")]
⑤Power supply/Communication connection
⑥Air discharge grille ange
⑦Air suction ange
⑧Hook ø9.52(3/8") or M10

9
ENGLISH
Indoor Unit Installation
It is recommended to install theY-joint before installing the indoor unit.
1. Place the pattern sheet on the ceiling at the spot where you want to install
the indoor unit.
Concrete
Suspension bolt(Φ9.52(3/8") or M10)
Hole in anchor
Hole in plug
Insert
Ceiling support
Rubber
Drain hose port
1°
• Since the diagram is made of paper, it may shrink or stretch slightly
due to temperature or humidity. For this reason, before drilling the
holes maintain the correct dimensions between the markings.
NOTE
2. Insert bolt anchors, use existing ceiling supports or construct a suitable
support as shown in gure.
3. Install the suspension bolts depending on the ceiling type.
• Ensure that the ceiling is strong enough to support the weight of
the indoor unit. Before hanging the unit, test the strength of each
attached suspension bolt.
• If the length of suspension bolt is more than 1.5 m(4.92 ft), it is
required to prevent vibration.
• If this is not possible, create an opening on the false ceiling in order
to be able to use it to perform the required operations on the indoor
unit.
CAUTION
4. Screw eight nuts to the suspension bolts making space for hanging the
indoor unit.
• You must install the suspension bolts more than four when
installing the indoor unit.
CAUTION
5. Hang the indoor unit to the suspension bolts between two nuts.
• Piping must be laid and connected inside the ceiling when
suspending the unit. If the ceiling is already constructed, lay the
piping into position for connection to the unit before placing the
unit inside the ceiling.
NOTE
6. Screw the nuts to suspend the unit.
7. Adjust level of the unit by using measurement plate for all 4 sides.
• For proper drainage of condensate, give a 1° slant to the left or right
side of the unit which will be connected with the drain hose, as
shown in the gure. Make a tilt when you wish to install the drain
pump, too.
NOTE

10
Purging the Unit
On delivery, the indoor unit is loaded with inert gas. All this gas must therefore be purged before connecting the assembly
piping. To purge the inert gas, proceed as follows.
Unscrew the pinch pipe at the end of each refrigerant pipe.
Result : All inert gas escapes from the indoor unit.
Liquid refrigerant
port
Gas refrigerant port
Welding ame
Wet cloth
• To prevent dirt or foreign objects from getting into the pipes during
installation, do NOT remove the pinch pipe completely until you are
ready to connect the piping.
NOTE
Connecting the Refrigerant Pipe
There are two refrigerant pipes of diering diameters:
f A smaller one for the liquid refrigerant
f A larger one for the gas refrigerant
f The inside of copper pipe must be clean & has no dust.
The connection procedure for the refrigerant pipes varies according to the
exit position of the pipes from the indoor unit, as seen when facing the indoor
in the“A” side.
f Liquid refrigerant port
f Gas refrigerant port
f Drain hose port
1. Remove the pinch pipe on the pipes and connect the assembly pipes to each
pipe, tightening the nuts, rst manually and then with a torque wrench, a
spanner applying the following torque.
Outer diameter Torque
mm inch N•m Ibf•ft
6.35 1/4 14 ~ 18 10.3 ~ 13.3
9.52 3/8 34 ~ 42 25.1 ~ 31.0
12.7 1/2 49 ~ 61 36.1 ~ 45.0
15.88 5/8 68 ~ 82 50.2 ~ 60.5
19.05 3/4 100 ~ 120 73.8 ~ 88.5
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
A
• Must apply refrigerant oil on the aring area to prevent a leak.
NOTE
❋ The designs and shape are subject
to change according to the model.
2. Be sure that there must be no crack or kink on the bended area.

11
ENGLISH
Cutting/Flaring the Pipes
1. Make sure that you prepared the required tools. (pipe cutter, reamer, aring tool and pipe holder)
2. If you want to shorten the pipe, cut it using a pipe cutter ensuring that the cut edge remains at 90° with the side of the
pipe. There are some examples of correct and incorrect cut edges below.
Oblique90° Rough Burr
Pipe
cutter
Pipe
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
4. Carry out aring work using aring tool as shown below.
Flaring tool
Clutch type Wing nut type
A
Die
Copper pipe
York
Die
Copper pipe
Flare nut
Pipe Flare
Pipe diameter
[D]
Depth of aring part [A]
Using aring tool
for R-410A
Using conventional aring tool
Clutch type Wing nut type
mm inch mm inch mm inch mm inch
6.35 1/4 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.08
9.52 3/8 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.08
12.7 1/2 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.08
15.88 5/8 0~0.5 0~0.02 1.0~1.5 0.04~0.06 1.5~2.0 0.06~0.08
5. Check if you ared the pipe correctly. There are some examples of incorrectly ared pipes below.
Uneven
Thickness
CrackedDamaged
Surface
InclinedCorrect
6. Align the pipes and tighten the are nuts rst manually and then with a torque wrench, applying the following torque.
Outer diameter (D) Torque (A) Flare dimension (L) Flare shape
mm(inch)
mm inch N•m lbf.ft mm inch
6.35 1/4 14~18 10.3~13.3 8.7~9.1 0.34~0.36
LD
90° ±2°
45° ±2°
R 0.4~0.8
(0.016~0.032)
9.52 3/8 34~42 25.1~31.0 12.8~13.2 0.50~0.52
12.7 1/2 49~61 36.1~45.0 16.2~16.6 0.64~0.65
15.88 5/8 68~82 50.2~60.5 19.3~19.7 0.76~0.78
19.05 3/4 100~120 73.8~88.5 23.6~24.0 0.93~0.94
• In case of needing brazing, you must work with Nitrogen gas blowing.
CAUTION

12
Performing leak test & insulation
Leak test
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum
and recirculating the R-410A, it’s responsibility of installer to pressurize the
whole system with nitrogen (using a pressure regulator) at a pressure above
4.1MPa(594.7 psig) (gauge).
LEAK TEST WITH R-410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and create
vacuum. After opening valves check leaks using a leak detector for refrigerant
R-410A.
Leak check
• Discharge all the nitrogen to create a vacuum and charge the system.
CAUTION
Insulation
Once you have checked that there are no leaks in the system, you can insulate the piping and hose.
1. To avoid condensation problems, place T13.0 (1/2") or thicker Acrylonitrile
Butadien Rubber separately around each refrigerant pipe. No gap
NBR
(T13.0 (1/2") or thicker)
Insulation cover pipe
Indoor unit
Be sure to overlap the
insulation
Insulation pipe
• Must t tightly against
body without any gap.
CAUTION
• Always make the seam of pipes face upwards.
NOTE
2. Wind insulating tape around the pipes and drain hose avoiding to compress
the insulation too much.
3. Finish wrapping insulating tape around the rest of the pipes leading to the
outdoor unit.
4. The pipes and electrical cables connecting the indoor unit with the outdoor
unit must be xed to the wall with suitable ducts.
• All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
CAUTION

13
ENGLISH
5. Select the insulation of the refrigerant pipe.
f Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.
f Indoor temperature of 30 °C(86 ˚F) and humidity of 85 % is the standard condition. If the pipe is installed in a high
humidity condition, use one grade thicker insulation by referring to the table below.
If installing in an unfavorable conditions,use thicker one.
f Insulation’s heat-resistance temperature should be more than 120 °C(248 ˚F).
Pipe Outer diameter
Insulation Type (Cooling, Heating)
Remarks
General
[30 °C(86 °F), 85 %]
High humidity
[30 °C(86 °F), over 85 %]
EPDM,NBR
mm inch mm inch mm inch
Liquid
pipe
6.35~9.52 1/4~3/8 9 3/8 9 3/8
Heating resisting temperature
over 120 °C(248 °F)
12.7~50.80 1/2~2 13 1/2 13 1/2
Gas
pipe
6.35 1/4 13 1/2 19 3/4
9.52~25.4 3/8~1 19 3/4 25 1
28.58~44.45 1 1/8~1 3/4 19 3/4 32 1 1/4
50.8 2 25 1 38 1 1/2
f When installing insulation in places and conditions below, use the same insulation that is used for high humidity
conditions.
<Geological condition>
- High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is
covered by earth and sand.)
<Operation purpose condition>
- Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
- The ceiling frequently exposed to moisture and cooling is not covered.
e.g.The pipe installed at a corridor of a dormitory and studio or near an exit that opens and closes frequently.
- The place where the pipe is installed is highly humid due to the lack of ventilation system.

14
Performing leak test & insulation
Refrigerant pipe before EEV kit and MCU or without EEV kit and MCU
f You can contact the gas side and liquid side pipes but the pipes should not
be pressed.
f When contacting the gas side and gas side pipe, use 1 grade thicker
insulation.
Gas pipe
Liquid
pipe
Insulation
Insulation
Refrigerant pipe after EEV kit and MCU
f Install the gas side and liquid side pipes, leaving 10 mm(0.39") of space.
f When contacting the gas side and liquid side pipe, use 1 grade thicker
insulation.
Gas pipe
10 mm(0.39")
Liquid pipe
10 mm(0.39")10 mm(0.39")
• Install the insulation not to get wider and use the
adhesives on the connection part of it to prevent
moisture from entering.
• Wind the refrigerant pipe with insulation tape if it is
exposed to outside sunlight.
• Install the refrigerant pipe respecting that the insulation
does not get thinner on the bent part or hanger of pipe.
• Add the additional insulation if the insulation plate gets
thinner.
CAUTION
Additional
insulation Hanger
Refrigerant pipe
insulation
a×3
a

15
ENGLISH
Drain pipe and drain hose installation
Care must be taken when installing the drain hose for the indoor unit to ensure that any condensate water is correctly
drained outside. The drain hose can be installed to the right or left side of the base pan.
1. Unscrew the 4 tapped screws to remove the cover of the drain hose
connection port.
2. Insert the exible hose to the drain hose port.
Drain hose connection port
Cable Clamp
Indoor
Unit
No gap
Cable Tie
Cable hose
Flexible hose
Insulation
• Must t tightly against
body without any gap.
CAUTION
• Fix the exible hose to the indoor unit with the supplied cable
clamp securely. (Use the screwdriver to x the exible hose
securely.)
NOTE
3. Install the drain hose so that its length can be as short as possible.
Internal diameter of the drain hose should be the same or slightly bigger than
the external diameter of the drain hose port.
• Inner diameter of the drain hose
32 mm(1.26")(inner diameter)
• Give a slant sightly to the drain hose for proper drainage of
condensate.
• Fix the exible hose to the PVC with the supplied cable tie securely.
NOTE
4. Wrap the drain hose with the insulation drain as shown in gure and secure it.

16
Drain pipe and drain hose installation
Drain pipe Connection
Without the drain pump
1. Install horizontal drain pipe with a slope of 1/100 or more and x it by hanger space of 1.0~1.5 m(3.29~4.92').
2. Install U-trap at the end of the drain pipe to prevent a nasty smell to reach the indoor unit.
3. Do not install the drain pipe to upward position. It may cause water ow back to the unit.
1~1.5m(3.29~4.92')
Horizontal drain pipe more than 1/100 slope
Ceiling
Hanger
Drain pipe cleaning hole
H≥50mm(1.97")
1/2H
With the drain pump
1. The drain pipe should be installed within 330mm(12.99") from the exible hose and then lift down 20mm(0.79”) or
more.
2. Install horizontal drain pipe with a slope of 1/100 or more and x it by hanger space of 1.0~1.5m(3.29~4.92').
3. Install the air vent in the horizontal drain pipe to prevent water ow back to the indoor unit.
• You may not need to install it if there is proper slope in the horizontal drain pipe.
NOTE
4. The exible hose should not be installed upward position, it may cause water ow back to the indoor unit.
Flexible hose
Air vent
300 mm(11.81") or less
Horizontal drainpipe more
than 1/100 slope
Within
330mm(12.99")
1~1.5m(3.29~4.92')
200 mm
(7.87")or
more
Hanger
Ceiling
20 mm
(0.79")or
more

17
ENGLISH
Centralized Drainage
Without the drain pump
1. Install horizontal drain pipe with a slope of 1/100 or more and x it by hanger space of 1.0~1.5m(3.29~4.92').
2. Install U-trap at the end of the drain pipe to prevent a nasty smell to reach the indoor unit.
100mm(3.94") or more
Ceiling
Horizontal drainpipe more than 1/100 slope
With the drain pump
1. Install main air vent at the front of the farthest indoor unit from the main drain when installed indoor units are more than 3.
2. You may need to install individual air vent to prevent water ow back at the top of each indoor unit drain pipe.
Hanger
Main drainpipe
Individual
air vent
Main air vent
Centralized horizontal drain pipe (more
than 1/100 slope)
330mm
(12.99") or less
1~1.5m
(3.29~4.92')
Testing the drainage
Prepare a little water about 2 liters.
1. Pour water into the drain pan in the indoor unit as shown in gure.
2. Conrm that the water ows out through the drain hose.
3. When the drain pump is installed, operate the unit as cooling mode and
check a drain pump pumping.
4. Check drain water drops at the end of the drain pipe.
Drain pan
❋ The designs and shape are subject to
change according to the model.
Drainpipe
Drain water drops
5. Make sure there is no water leak at the drainage.
6. Reassemble the cover of water supply intake.

18
Drain pipe and drain hose installation
Power and communication cable connection
1. Before wiring work, you must turn o all power sources.
2. Indoor unit power should be supplied through the breaker ( ELCB or MCCB+ELB ) separated by the outdoor power.
ELCB: Earth Leakage Circuit Breaker
MCCB: Molded Case Circuit Breaker
ELB: Earth Leakage Breaker
3. The power cable should use only copper wires.
4. Connect the power cable{1(L), 2(N)} among the units within maximum length and communication cable(F1, F2) each.
5. Connect F3, F4(for communication) when installing the wired remote control.
ELCB
MCCB+
ELB
Indoor Unit 1
Outdoor Unit
Indoor Unit 2 Indoor Unit 3
Wired Remote
Control
208-230V~
❋ ELCB : Essential Installation
or
Connecting power for optional product
f When installing optional products, make sure to follow below current capacity.
❋ Optional product is not supplied by manufacturer.
OPTION VENTILATOR
AC, Below 2A AC, Below 2A
1(L)
T/B 2(N) Vc Vc Vw Vw
POWER : L
POWER : N
HOT COIL

19
ENGLISH
Wiring work
Selecting compressed ring terminal
Silver solder
mm(inch)
Norminal dimensions for cable [mm2(inch2)] 1.5 (0.002") 2.5 (0.003") 4 (0.006")
Norminal dimensions for screw [mm(inch)] 4 (0.15") 4 (0.15") 4 (0.15") 4 (0.15") 4 (0.15")
BStandard dimension [mm(inch)] 6.6 (0.25") 8.0 (0.31") 6.6 (0.25") 8.5 (0.33") 9.5 (0.37")
Allowance [mm(inch)] ±0.2 (±0.007") ±0.2 (±0.007") ±0.2 (±0.007")
D
Standard dimension [mm(inch)] 3.4 (0.13") 4.2 (0.16") 5.6 (0.22")
Allowance [mm(inch)] +0.3 (+0.011")
-0.2 (-0.007")
+0.3 (+0.011")
-0.2 (-0.007")
+0.3 (+0.011")
-0.2 (-0.007")
d1 Standard dimension [mm(inch)] 1.7 (0.06") 2.3 (0.09") 3.4 (0.13")
Allowance [mm(inch)] ±0.2 (±0.007") ±0.2 (±0.007") ±0.2 (±0.007")
E Min. [mm(inch)] 4.1 (3/16") 6 (1/4") 6 (1/4")
F Min. [mm(inch)] 6 (1/4") 6 (1/4") 6 (1/4")
L Max. [mm(inch)] 16 (5/8") 17.5 (3/4") 20 (3/4")
d2
Standard dimension [mm(inch)] 4.3 (0.16") 4.3 (0.16") 4.3 (0.16")
Allowance [mm(inch)] +0.2 (+0.007")
0 (0")
+0.2 (+0.007")
0 (0")
+0.2 (+0.007")
0 (0")
t Min. [mm(inch)] 0.7 (0.02") 0.8 (0.03") 0.9 (0.035")
Specication of electronic wire
Power supply MCCB ELB Power cable Earth cable Communication cable
Max : 253V
Min : 187V XA XA, 30 mA
0.1 s
2.5 mm2
(0.004 inch2)
2.5 mm2
(0.004 inch2)
0.75(0.0011 inch2)~
1.5 mm2(0.0023 inch2)
❋ Run transmission wiring between the indoor and outdoor units through a conduit to protect against external forces, and
feed the conduit through the wall together with refrigerant piping.
f Decide the capacity of ELCB(or MCCB+ELB) by below formula.
The capacity of ELCB(or MCCB+ELB) X[A] = 1.25 X 1.1 X ∑Ai
❋ X : The capacity of ELCB(or MCCB+ELB).
❋ ∑Ai : Sum of Rating currents of each indoor unit.
❋ Refer to each installation manual about the rating current of indoor unit.
❋ Rating current
Unit Model Rating current
AM✴FNHDCH✴
✴✴076✴✴ 3.8 A
✴✴096✴✴ 5.9 A

20
Wiring work
f Decide the power cable specication and maximum length within 10 % power drop among indoor units.
nCoef×35.6×Lk×ik
10 % of input voltage[V]
∑( ) <
1000×Ak
k=1
• coef : 1.55
• Lk : Distance among each indoor unit[m], Ak : Power cable specication[mm2(inch2)], ik : Running current of each unit[A]
Example of Installation
f Total power cable length L = 100m(328 ft), Running current of each units 1[A]
f Total 10 indoor units were installed.
10[A]
Indoor unit 10
20[m](65.62 ft)10[m](32.8 ft)0[m]
9[A] 1[A]
100[m](328 ft)
Indoor unit 2Indoor unit 1
ELCB
Or MCCB+
ELB
f Apply following equation.
nCoef×35.6×LK×iK
10 % of input voltage[V]
∑() <
1000×AK
k=1
❋ Calculation
• Installing with 1 sort wire.
220[V]
-2.2[V] -2.0[V]
············ 2.5[mm2](0.004 inch2) ············
208.8[V](Within 187 V ~ 253 V)
-(2.2+2.0+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-11.2[V]
it's okay
2.5[mm2](0.004 inch2) 2.5[mm2](0.004 inch2)
• Installing with 2 dierent sort wire.
220[V] -1.4[V] -1.2[V]
············ 2.5[mm2](0.004 inch2) ············
209.5[V](Within 187 V ~ 253 V)
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5[V]
it's okay
4.0[mm2](0.006inch2) 4.0[mm2](0.006inch2)
How to connect your extended power cables
1. Prepare the following tools.
Tools Crimping pliers Connection sleeve (mm) Insulation tape Contraction tube (mm)
Spec MH-14 20xØ6.5(HxOD) Width 19mm 70xØ8.0(LxOD)
Shape