ACPro AUHD18ND3F1O User manual

AC Pro H-Series 18-48K
.àøĀØØĀÅæà Manual
Models
AUHD18ND3F1O / AFH18D3F3I
AUHD24ND3F1O / AFH24D3F3I
AUHD30ND3F1O / AFH30D3F3I
AUHD36ND3F1O / AFH36D3F3I
AUHD42ND3F1O / AFH42D3F3I
AUHD48ND3F1O / AFH48D3F3I
(Refrigerant R410A)

We reserve the right to correct any clerical errors.
Copyright 2018 AC pro.

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Installation
1.Indoor Unit Installation
1.1 Installation of Duct Type
1.1.1 Before Installation
After receiving the machine, please check for any transport damage. If finding any surface or internal
damage, please immediately report to the transport company or equipment company in writing.
After receiving the machine, please check the unit and accessories in reference to the packing list.
Ensure that the model is correct and the machine is in good condition. Please also check if the specification and
quantity of accessory parts are correct.
Determine the correct handling route and methods, thus to avoid damaging the unit or causing possi-
ble hazard. For the sake of protection and safety, it is suggested to move the unit with the packaging box. Even
though it is not permitted to do like this under special occasions, do not remove the packaging box, thus to avoid
loosening or falling during handling.
Confirm if the installing foundation is solid. When this unit is to be installed on the metal section of the
building, make sure that the electrical insulation must comply with applicable standards.
Ensure that the place of installation is far from the area where the inflammable or explosive substances
are stored, thus to avoid possible explosion or fire due to leakage.
1.1.2 Installation Site
Ensure the top hanging piece has strong strength to withstand the weight of the unit.
The drainage pipe has convenient flow of water.
There is no obstacle blocking the return air inlet and exhaust outlet, so as to ensure sound air circulation.
The installation spaces required by the drawing must be ensured, so as to provide enough space for the
service and maintenance.
The installation site must be far away from heat source, leakage of inflammable gas or smoke.
The indoor unit is of ceiling mount (indoor unit is hidden inside the ceiling).
The indoor and outdoor units, the power cable and the connecting electrical lines must be at least 1
meter from anyTV set or radio.This is to avoid image interference or noise of theTV set or radio. (Even if the
distance is 1 meter, noise can also exist if there is strong electric wave.)
1.1.3 Caution for Installation
Generally, the unit is installed indoor on ceiling. For ceiling mounting, ensure that the hangers on ceiling
have adequate strength to support the weight of the unit.
To meet the noise and vibration requirements, the unit shall be installed by using rubber pad (thickness
≥20mm (13/16inch)) and rubber connector.
Insert a M10 expansion bolt into the hole. Drive a nail into the bolt. Refer to the profile dimensions drawing of the
indoor unit for the distance between the holes. Refer to Figure 3-1-1 for the installation of the expansion bolt.

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Precautions for unfavorable installation:
The preparation of all pipes (connecting pipes and drainage pipes) and cables (connecting lines of
wire controller, indoor unit and outdoor unit) must be ready before the installation, so as to achieve smooth
installation.
Drill an opening on the ceiling. Maybe it is required to support the ceiling to ensure the evenness of it
and avoid the vibration of it. Consult with the user or a construction company for details.
In case the strength of ceiling is not enough, use angle iron sections to set up a beam support. Place
the unit at the beam and fix it.
Level inspection of the indoor unit
After the indoor unit is installed, it is required to check the level of the whole unit. The unit must be
placed horizontally, but the condensate pipe shall be installed obliquely, so as to facilitate the drainage of
condensate.
Install the hanger onto the indoor unit as Figure 3-1-2 and Figure 3-1-3 shows.
Install the indoor unit at the ceiling as Figure 3-1-4 shows.
Ceiling-mount
Screw
Air-conditioning Unit
Hanger
Figure 3-1-1 Figure 3-1-2
Hook Screw
Nut
Nut
Figure 3-1-3
I
Air Intake Air Supply
Screw
Hanger
Nut
PPLQFK
I Detail
Figure 3-1-4

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Condensate
Drainpipes
Level Instrument
Air Intake Air Supply
B
A
B
Enlarged View
Condensate Drainpipe As the inside of the unit is in the negative
pressure status, it is required to set up a
backwater elbow. The requirements is:
$ %3LQFK
P is the absolute pressure inside the unit.
The unit of the pressure is psig.
Figure 3-1-5
1.1.4 Dimension Data
• For the units: 18~30K

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• For the units: 36~48K
Unit: mm (inches)
Model A B C D E F G H I J
AFH18D3F3I 1100
(43-3/8)
515
(20-3/8)
820
(32-1/4)
1160
(45-5/8)
1280
(50-
3/8)
560
(22)
1000
(39-1/2)
160
(6-1/4)
235
(9-1/4)
270
(10-1/2)
AFH24D3F3I 1010
(39-3/4)
750
(29-1/2)
820
(32-1/4)
1115
(43-7/8)
1225
(48-1/4)
775
(30-1/2)
980
(38-5/8)
160
(6-1/4)
230
(9)
290
(11-3/8)
AFH30D3F3I
AFH36D3F3I
1175
(46-1/4)
645
(25-3/8)
850
(33-1/2)
1150
(45-1/4)
1340
(85-1/4)
750
(29-1/2)
980
(38-5/8)
19
(38-5/8)
230
(9)
350
(13-3/4)
AFH42D3F3I
AFH48D3F3I

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Table 3-1-2 Installation Accessories List for Duct-type Indoor Unit
Name & Shape Qty Notes
Installation and Operating Instructions 1
Insulation materials for gas pipe 1 Used for gas pipe connector on indoor unit
Insulation materials for liquid pipe 1 Used for liquid pipe connector on indoor unit
Insulation materials for drainage pipe 2 Used for wrapping the condensate pipe and rubber plug
Nut M8 with gasket 8 Use for fixing the hanger hook
4
4 sets, used for ceiling mounting of the indoor unit
Nut and spring gasket 4
Hook 4 Used for ceiling mounting of the indoor unit
Strap 4 or 8
pcs 4 pcs for 18kBtu/h unit and 8 pcs for others
Wired Controller 1
Remote Controller 1
Battery 2
Flexible Pipe 0.2 or 4
pcs
0 pcs for 18 kBtu/h unit; 2 pcs for 22.5,27kBtu/h unit; and 4
pcs for 36-45kBtu/h unit
Power Cord 1-2 pcs 2 pcs for 36-45kBtu/h unit and 1 pc for others
Connection Wire
1.1.5 Installation Clearance Data
Warning! The height of installation for the indoor unit should be 2.5m (8-1/5ft) above.
஘
2500mm
(98-3/8inch)
Nut with
Washer Nut Spring
Washer
஘ 250mm
(9-7/8inch)
஘ 250mm
(9-7/8inch)
Figure 3-1-7

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1.1.6 Drain Piping Work
Installation of Drainage Pipeline:
(1) (Install the drain hose with downward gradient (1/50 to 1/100) and no risers or traps are used for
the hose (Figure 3-1-8).
(2) Be sure there is no crack or leak on the drain hose to avoid the formation of air pocket (Figure
3-1-8).
(3) When the hose is long, install supporters (Figure 3-1-9).
(4) Always use the drain hose which has been insulated properly.
CAUTION
Install the drain hose in accordance with the instructions in this installation manual and keep the a rea warm
enough to prevent condensation. Problems with the piping may lead to water leaks.
Drain hose
Arrange the drain hose
lower than this drain port
Trap
Air bleeding
Rise
¥
Figure 3-1-8
Supporter
Drain hose
1~1.5m(3-2/7~5feet)
Figure 3-1-9 Figure 3-1-10

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Condensate Drainpipe
B
A
As the inside of the unit is in the
negative pressure status, it is required
to set up a backwater elbow. The
requirements is:
$ %3LQFK
P is the absolute pressure inside the
unit. The unit of the pressure is psig.
Condensate Drainpipe
Enlarged View
B
A
Figure 3-1-11
Drain port
Fastener
Drain cap
Fi
g
ure 3-1-12
(5) Use a suitable drain hose, and see Table 3-3-3 for its size.
(6) There is a drain port on both the left and right sides. Select the drain port to match the local
conditions (Figure 3-1-10).
(7) When the unit is shipped from the factory, the drain port is defaulted to be the one on the left side
(electric box side), the port on right side has been plugged.
(8) When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain
port (Figure 3-1-12).
(9) Be sure to insulate where the drain port and the drain hose is connected (Figure 3-1-13).
(10) The unused drain port also should be insulated properly (Figure 3-1-14).
CAUTION
Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener.
If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the
cooling operation.
Drain hose insulation
Drain port
Insulated drain hose
Insulated drain hose
Unit
0mm(0inch)
Drain hose insulation
Drain port
Drain cap 0mm(0inch)
Unit
Drain cap
Figure 3-1-13 Figure 3-1-14

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(11) There is adhesive on one side of the insulation so that after removing the protective paper over it
the insulation can be directly attached to the drain hose.
(12) Considerations for the unit with the condensate pump:
A) For the unit with the condensate pump, only one drain port at the side close to the electric box
is prepared and only through it the drain hose can be connected.
B) See table 3 for the size of the drain port of the unit with the condensate pump, which is different
from that of the unit without the condensate pump.
C) For the unit with the condensate pump, two drain ports at the bottom are defaulted to be factory
plugged with drain caps. After the installation of the drain hose, these two drain ports also need
to be insulated properly with the same way aforementioned.
D) The drain hose for the unit with the condensate pump should be arranged as shown in the
figure below.
1) The vertical height of the drain hose should be 75mm (3inch) or less so that it is unnecessary
for the drain port to withstand additional force.
2) When multiple drain hoses are used, their installation should be performed as shown in the
figure below.
Ceiling
Hoisting stand
Clamp(attachment)
Drain hose(attachment)
Drain raising
hose
PPLQFK 1000~1500mm(39-3/8~59inch)
PP
(39-3/8inch)
Figure 3-1-15
Drain hose(attachment)
PPLQFK
PP
(39-3/8inch)
Figure 3-1-16

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0~1000mm(0~39-3/8inch) PPLQFK
T-joint converging drain pipes
T-joint converging drain pipes
Figure 3-1-17
B
A
21mm(7/8inch)
Figure 3-1-18 Supply Air Outlet
C
D
Figure 3-1-19 ReturnAir Inlet
Table 3-1-3
1.1.7 Installation of air duct
Dimensions of the Supply Air Outlet/Return Air Inlet
Model Supply Air Outlet Return Air Inlet
ABCD
AFH18D3F3I 158(6-1/4) 818(32-1/4) 994(39-1/8) 195(7-5/8)
AFH24D3F3I 160(6-1/4) 820(32-1/4) 980(37-5/8) 230(9)
AFH30D3F3I 160(6-1/4) 820(32-1/4) 980(37-5/8) 230(9)
AFH36D3F3I 195(7-5/8) 852(33-1/2) 980(37-5/8) 230(9)
AFH42D3F3I 195(7-5/8) 852(33-1/2) 980(37-5/8) 230(9)
AFH48D3F3I 195(7-5/8) 852(33-1/2) 980(37-5/8) 230(9)

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Bottom Return Air Installation only for Units 18k
(2) The default installation location of the rectangular flange is at the back and the return air cover
plate is at the bottom, as shown in Figure 3-1-21.
(3) If the bottom return air is desired, just change the place of the rectangular flange and the return air
cover plate.
(4) Connect one end of the return air duct to the return air outlet of the unit by rivets and the other to
the return air louver. For the sake of the convenience to freely adjust the height, a cutting of
canvas duct will be helpful, which can be reinforced and folded by 8# iron wire.
(5) More noise is likely to be produced in the bottom return air mode than the backward return air
mode, so it is suggested to install a silencer and a static pressure box to minimize the noise.
(6) The installation method can be chosen with considering the conditions of the building and maintenance
etc., as shown in Figure 3-1-22
1. Installation of the Supply Air D1.8 uct
(1)Installation of the Rectangular Duct.
Figure 3-1-20
Table 3-1-4 Installation of the rectangular duct
No. Name No. Name
1 Hanger 5 Filter
2 Air Intake Pipe 6 Main Air
Supply Pipe
3 Canvas Air Pipe 7 Air Supply
Outlet
4 Air Intake
CAUTION
1.The maximum length of the duct means the maximum length of the supply air duct plus the maximum length of the
return air duct.
2. The duct is rectangular and connected with the air inlet/outlet of the indoor unit. Among all supply air outlets, at
least one should be kept open.
Rear Return Air
Rectangular Flange
Bottom Return Air
Return Air Cover Plate
Figure 3-1-21

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Supply air
Return air
1
Supply air
Return air
Install the return air duct(a) Install the return air duct(b)
2
4
55
46
3
1
Fi
g
ure 3-1-22
Ƴ .1 Before Installation
Ƴ.2 Installation Site
Table 3-1-4 Installation of the return air duct
After receiving the machine, please check for any transport damage. If finding any surface or internal
damage, please immediately report to the transport company or equipment company in writing.
After receiving the machine, please check the unit and accessories in reference to the packing list.
Ensure that the model is correct and the machine is in good condition. Please also check if the specification
and quantity of accessory parts are correct.
Determine the correct handling route and methods, thus to avoid damaging the unit or causing
possible hazard. For the sake of protection and safety, it is suggested to move the unit with the packaging
box. Even though it is not permitted to do like this under special occasions, do not remove the packaging
box, thus to avoid loosening or falling during handling.
Confirm if the installing foundation is solid.When this unit is to be installed on the metal section of the
building, make sure that the electrical insulation must comply with applicable standards.
Ensure that the place of installation is far from the area where the inflammable or explosive
substances are stored, thus to avoid possible explosion or fire due to leakage.
If possible, do not install the unit where it will be expoised to direct sunlight. (If necessary, install a b
that does not interfere with air flow.)
(1) Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain as much as
possible.
(2) Install the outdoor unit where it is convenient to connect with the indoor unit.
No Name No Name
1 Return Air Inlet (with filter) 4 Indoor unit
2 Canvas Duct 5 Supply Air Duct
3 Return Air Duct 6 Grille
Ƴ. Outdoor Installation

ƲƳ
Ƴ.3 Caution for I tallation
(3) Install the outdoor unit where the condensate water can be drained out freely during heating operation.
(4) Do not place animals and plants in the path of the warm air.
(5) Take the air conditioner weight into account and select a place where noise and vibration are small.
(6) Install the outdoor unit where is capable of withstanding the weight of the unit and generates as less
noise and vibration as possible.
(7) Provide the space shown in Figure 3-2-1, so that the air flow is not blocked. Also for efficient operation, l
eave three of four directions of peripheral constructions open.
The outdoor unit shall be so installed that the air discharged out of the outdoor unit will not flow back
and that enough space shall be maintained around the machine for repair;
The installing position shall be in good ventilation, so that the machine can breathe and exhaust
enough air. Ensure that there is no obstruction at the inlet and outlet of the machine. If any, please remove
the obstructions blocking the air inlet and outlet.
If the outdoor unit is installed on concrete or solid ground, it shall be fixed by using M10 bolts and nuts.
And ensure that the machine is kept vertical and horizontal.
The outdoor unit must be lifted by using the designated lift hole. During lifting, take care to protect the
air conditioner and avoid knocking the metal parts, thus to prevent rusting in the future.
To meet the noise and vibration requirements, the outdoor unit shall be installed by using rubber
damping pad or spring damper.
To install the drainage pipe, please insert the drainage joint to the drainage hole on the outdoor
chassis and connect a drainage pipe on the drainage joint. (The installing height of outdoor unit shall be at
least 5cm (2inch) if drainage joint is to be used).
To insert the pipe through the wall, the wall-cross tube must be installed.
The installing dimension shall comply with the installation requirements in these instructions.The
outdoor unit must be fixed at the installing position.
The installation shall be done by specialist technicians.
G
஘
500mm
(1-2/3feet)
஘
2000mm
(6-5/9feet) G
஘
500mm
(1-2/3feet)
஘
500mm
(1-2/3feet)
G ஘ 500mm
(1-2/3feet)
஘ 2000mm
(6-5/9feet)
஘
1000mm
(3-2/7feet)
Figure 3-2-1
ns
ƳɌƵÅÞ±àøÅæàĀ
Figure 3-2-2

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Model A B C D E
AUHD18ND3F1O 955
(37-5/8)
396
(15-5/8)
700
(27-1/2)
560
(22)
360
(14-1/8)
AUHD24ND3F1O 980
(38-5/8)
427
(16-3/4)
790
(31-1/8)
610
(24)
395
(15-1/2)
AUHD30ND3F1O
AUHD36ND3F1O 1107
(43-5/8)
440
(17-3/8)
1100
(43-1/4)
631
(24-7/8)
400
(15-3/4)
AUHD42ND3F1O 958
(37-3/4)
412
(16-1/4)
1349
(53-1/8)
572
(22-1/2)
376
(14-3/4)
AUHD48ND3F1O
Unit: mm (inch)
ƴ.1 Refrigeration Piping Work Procedures and Caution in Connecting
.1.1ƴ Flare Processing
ƴ.1.2 Bending Pipes
ƴ. Refrigeration Piping Work
(1) Cut the connection pipe with the pipe cutter and remove the burrs.
(2) Hold the pipe downward to prevent cuttings from entering the pipe.
(3) Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the
indoor unit, then insert them to the connection pipe, after that, flare the connection pipe with a
flaring tool.
(4) Check if the flare part is spread evenly and there are no cracks (see Figure 3-3-1).
(1) The pipes are shaped by your hands. Be careful not to collapse them.
Figure 3-2-3
Figure 3-2-4
(2) Do not bend the pipes in an angle more than 90°.
(3) When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or
stretch them any more. Do not bend or stretch the pipes more than three times.
(4) When bending the pipe, do not bend it as is. The pipe will be collapsed. In this case, cut the heat insulat
ing pipe with a sharp cutter as shown in Figure 3-3-3, and bend it after exposing the pipe. After bending
the pipe as you want, be sure to put the heat insulating pipe back on the pipe, and secure it with tape.
d2
d1
d1
d2
90°±1°
Extend the pipe by unwinding it
¥×

ƲƵ
ƴ.1.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
When connecting the pipe to the unit or removing it from the unit, please do use both the spanner and
the torque wrench (Figure 3-3-4).
When connecting, smear both inside and outside of the flare nut with refrigeration oil, screw it hand
tight and then tighten it with the spanner.
Refer to Table 3-3-1 to check if the wrench has been tightened properly (too tight would mangle the nut
and lead to leakage).
Examine the connection pipe to see if it leaks, then take the treatment of heat insulation, as shown in
the Figure 3-3-4.
Use the medium-sized sponge to insulate the coupler of the gas pipe.
Figure 3-2-5
Pipe
Cutter
Cutt line
Heat insulating
pipe
CAUTION!
1.To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150mm (5-7/8inch)
or over.
2. If the pipe is bent repeatedly at the same place, it will break.
CAUTION!
1.To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150mm (5-7/8inch)
or over.
2. If the pipe is bent repeatedly at the same place, it will break.

Ʋƶ
Sponge
Threaded fastener(×4)
Liquid pipe
Gas inlet pipe
Heat insulation sheath
(for the gas tube)
Heat insulation sheath
(for the liquid tube)
Table 3-2-2 Flare nut tightening torque
Pipe Diameter Tightening Torque
6mm (1/4inch) 15~30N·m (11~22ft.-1b.)
9.5mm (3/8inch) 35~40N·m (26~29ft.-1b.)
12.7mm (1/2inch) 45~50N·m (33~37ft.-1b.)
16mm (5/8inch) 60~65N·m (44~48ft.-1b.)
CAUTION!
Be sure to connect the gas pipe after connecting the liquid pipe completely.
ƴ.1.4 Connecting the Pipe at the Outdoor Side Unit
Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method
is the same as that as at the indoor side.
Gas pipe Liquid pipe
Pipe
coupling or
or
3-way valve 2-way valve
Figure 3-2-6
Figure 3-2-2

ƲƷ
CAUTION!
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in
theoutdoor unit for air purging!
ƴ.1.5 Checking the Pipe Connections for Gas Leaking
ƴ.1.6 Heat Insulation on the Pipe Joints (Indoor Side Only)
ƴ.1.7 Vacuum and Gas Leakage Inspection
ƴ.1.7.1 Vacuum
For both indoor and outdoor unit side, check the joints for gas leaking by the use of a gas leakage
detector without fail when the pipes are connected.
(1) Remove the caps of the liquid valve, gas valve and also the service port.
(2) Connect the hose at the low pressure side of the manifold valve assembly to the service port of
the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed in case of
refrigerant leak.
(3) Connect the hose used for evacuation to the vacuum pump.
(4) Open the switch at the lower pressure side of the manifold valve assembly and start the vacuum
pump. Meanwhile, the switch at the high pressure side of the manifold valve assembly should be
kept closed, otherwise evacuation would fail.
(5) The evacuation duration depends on the unit’s capacity, generally, 20 minutes for the 18k units,
30 minutes for the 24k/30k/36k units, 45 minutes for the 42k/48k units. And verify if the pressure
gauge at the low pressure side of the manifold valve assembly reads -1.0MPa (145psig), if not, it
indicates there is leak somewhere.Then, close the switch fully and then stop the vacuum pump.
(6) Wait for some time to see if the system pressure can remain unchanged, 3 minutes for the
18k/24k units, 10 minutes for the 30k/36k/42k/48k units. During this time, the reading of the
pressure gauge at the low pressure side can not be larger than 0.005MPa (0.72psig).
(7) Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance the
pressure inside and outside of the connection pipe, so that air will not come into the connection
pipe when removing the hose. Note that the gas and liquid valve can be opened fully only after the
manifold valve assembly is removed.
(8) Place back the caps of the liquid valve, gas valve and also the service port.
Stick coupler heat insulation (large and small) to the place where connecting pipes.
Front outlet
Coupler heat
insulation (small)
on the pipe
Liquid pipe Gas pipe
Reference A Coupler heat insulation
(large) on the pipe
Heat insulation pipe
Reference A:
Cover this portion with heat
insulating material also without fail
No gap
Figure 3-2-3

ƲƸ
Hose with the valve pin
gauge manifold
Pressure gauge (Low-pressure)
Pressure gauge (Hi-pressure)
Switch (Low-pressure) Switch (Hi-pressure)
Connection pipe (to indoor unit)
Liquid valve
Gas valve
Service port
Cap
Hose
Vacuum pump
Cap
Service pipe
Cap
Connection pipe
Figure 3-3-7
Note:
For the large-sized unit, it has the service port for both the gas valve and the liquid valve.
During evacuation, it is available to connect two hoses of the manifold valve assembly to two service ports
to quicken the evacuating speed.
Refrigerant suitable for a piping length of 7.6m (25feet) is charged in the outdoor unit at the factory.
When the piping is longer than 7.6m (25feet), additional charging is necessary.
For the additional amount, seeTable 3-3-2.
When the height difference between the indoor unit and outdoor unit is larger than 10m (32-4/5feet),
an oil bend should be employed for every 6m (19-2/3 feet).
ƴ.1.7.2 Additional Charge
MODEL Additional Refrigerant Amount for
Extra Pipe
18K 45g per 1.5 m (1.6 ounce per 5 feet )
24K~48K 90g per 1.5 m (3.2 ounce per 5 feet )
Oil bend
Indoor
Outdoor
6m(19-2/3feet)
Oil bend
Figure 3-2-5

Ʋƹ
Table 3-2-4
ƴ.2 Specification of Connection Pipe
MODEL
Size of Fitting Pipe
Inch Max. Pipe
Length
m (feet)
Max. Height Dif-
ference
between Indoor
Unit and
Outdoor Unit
m (feet)
Drainage pipe
(Outer
Diameter × wall
thickness)
mm (inch)
Liquid Gas
AFH18D3F3I AUHD18ND3F1O 1/4 1/2 50(164) 15(49) 30×1.5
AFH24D3F3I AUHD24ND3F1O 3/8 5/8 50(164) 15(49) 20×1.2
AFH30D3F3I AUHD30ND3F1O 3/8 5/8 50(164) 15(49) 20×1.2
AFH36D3F3I AUHD36ND3F1O 3/8 5/8 70(229) 15(49) 20×1.2
AFH42D3F3I AUHD42ND3F1O 3/8 5/8 70(229) 15(49) 20×1.2
AFH48D3F3I AUHD48ND3F1O 3/8 5/8 70(229) 15(49) 20×1.2
Ƶ.Electric Wiring Work
Ƶ.1 Wiring Precautions
WARNING!
Before obtaining access to terminals, all supply circuits must be disconnected.
The rated voltage of the unit is as shown as Table 1-4-1 and Table 1-4-2
Before turning on, verify that the voltage is within the 187~252V range (for single phrase units).
Always use a special branch circuit and install a special receptacle to supply power to the air conditioner.
Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner.
The special branch circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the poles
of the wiring and has an isolation distance of at least 3mm (1/8inch) between the contacts of each pole.
Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.
Install a leakage special branch circuit breaker in accordance with the related laws and regulations and electric
company standards.
WARNING!
The power source capacity must be the sum of the air conditioner current and the current of other electrical
appliances. When the current contracted capacity is insufficient, change the contracted capacity.
When the voltage is low and the air conditioner is difficult to start, contact the power company to raise the voltage.