Haier AB242ACBEA User manual

MANUAL CODE: SYJS-005-03 Rev.0 .
Haier Group
Auto-Restart function
Group control(with a group controller)
Auto-changeover
The same outdoor unit can match with cassette \convertible\
duct type indoor unit
With new environment friendly refrigerant R407C
Weekly timing(with a weekly timer)
Features
Service Manual
Commercial Air Conditioning
24 28 Universal Outdoor Unit air conditioning
AC28NACBEA+AU28NAHBEA
AD28NAMBEA+AU28NAHBEA
AB28NACBEA+AU28NAHBEA
Remotoe control and Wired remote control(Optional)
AB242ACBEA+AU242AHBEA
AC242ACBEA+AU242AHBEA
AD242AMBEA+AU242AHBEA
AD242AHBE A+AU242AHBEA
AP242ACBE A+AU242AHBEA
AU282AHBEA

CONTENTS
1. Description of Products & Features…………………...…….2
2. Specifications…………………………. ………………...……8
3. Safety precaution…………………………..………………….12
4. Net dimensions of indoor and outdoor unit………………...14
5. Installation instructions ……………………. ……………….16
6. Parts and functions …………………………..…… ..……….19
7. Remote controller functions………………………….………22
8. Refrigerant diagram…………………………..……………....24
9. Electrical control functions……………………………………25
10. Diagnostic information(trouble shooting)…………….……29
11. Electrical data.........................................…………….……35
12. Exploded views and parts lists...............……………. …...41
13. Performance curves……………............................... ……57
15. Air velocity distribution …………............................... ……48
CONTENTS
Contents……..............................................…...………...…….1
- 1 -
14. Noise level charts....... …………............................... ……48

1 .Description of Products& Features
Products coding direction
United Outdoor unit:
A U 24 2 A H B E A
Climate type: T1 (see table 1)
Design number E
Product type: A stands for heat pump type, refrigerant is R22
B stands for heat pump type, refrigerant is R407
M stands for cool only type, refrigerant is R22
N stands for cool only type, refrigerant is R407
Appearance character
Product series: common icon-shelled outdoor unit type
Applicable voltage: 2 stands for 220-240V/50Hz
4 stands for 220v/60Hz
N stand for 380V/50Hz
Cooling / Heating capacity,24=24000BTU/h
Product type : “B” stands for cassette type
“C” stands for convertible type
“D” stands for duct
“S” stands for split type
“Q” stands for chiller system
“U” stands for outdoor unit
Abbreviation of Air conditioner
Indoor units of Cassette type:
AC 242 AC B EA
Climate type: T1 (see table 1)
Design number E
Product type: A stands for heat pump type, refrigerant is R22
B stands for heat pump type, refrigerant is R407
M stands for cool only type, refrigerant is R22
N stands for cool only type, refrigerant is R407
Appearance character
Product series: common icon-shelled outdoor unit type
Applicable voltage: 2 stands for 220-240V/50Hz
4 stands for 220v/60Hz
N stand for 380V/50Hz
Cooling / Heating capacity,24=24000BTU/h
Product type : “B” stands for cassette type
“C” stands for convertible type
“D” stands for duct
“S” stands for split type
“Q” stands for chiller system
“U” stands for outdoor unit
Abbreviation of Air conditioner
-2-

a)Description of the coding rule of the models
AU28 N A HBEA
Climate type:T1
Design serial number
Air conditioner
Product series:one-to-one
Outdoor unit
Cooling capacity:28=28000BTU/h
Adaptive voltage:380-400V/50Hz
Appearance features
Product type: heat pump R407C
AB28 NA CBEA
Climate type:T1
Design serial number
Air conditioner
Product series:one-tag-one
Product specification:valid digit above kilobi
Adaptive voltage:380-400V/50Hz
Appearance features
Product type: heat pump R407C
Product type:indoor unit
P:Cabinet typeC:Convertible type
B:Cassette type D:Duct type
b). Standard working condition
Operating Mode Indoor Operating Mode Outdoor Operating Mode
Nominal Cooling
Temp. Temp.
Humidity
DB:27 WB:19 DB:35
DB:7 WB:6
WB:24
Humidity
DB:20 WB:15
Nominal Heating
No.
1
2
Temp.
Humidity
DB:27 WB:19 DB:35
DB:7 WB:6
WB:24
Humidity
DB:20 WB:15
Nominal Heating
No.
1
2
-3-

c)Brief introduction of the series:
Convertible type:
AC242ACBEA AC28NACBEA
(1).Ceiling convertible,flexible installation,convenient
maintenance,saving the users' expenditures
(2)Adopting single-phase & three-phase power supply,applicable for
household and commercial usage
(3).Dual air outlet design,floor air blowing,accelerating the indoor air
circulation, quick temperature adjustment
(4).Long-distance air blowing,large power,large cooling/heating
ratio
(5).Intelligent remote control,convenient and flexible control
(6).Super-slim indoor unit design,luxury and nice-looking,saving
space,harmonious and unitive with the indoor environment
(7).Adopting screw-fastening for the air inlet grill,firmly
fixed;adopting slipway insert-lock fastening method for the
filter screen,convenient cleaning or replacing the filter screen
without opening the air inlet grill.
(8).Group control,units up to 128 sets can be controlled .
Duct type :
AD242AMBHA AD242AHBEA AD28NAMBEA
Totally concealed machine body
All the machine body is to be installed inside the ceiling, having no effect on the
beauty of the room and without taking any room space.
Air intake via the rear air intake duct
This new design has changed the former unique pattern of air intake, and a larger
distance between air intake and air return cycles as well as better air quality can be
achieved.
Flexible and easier installation
The machine body is to be installed in a totally concealed way,its fan system has
a longer distance coverage so as to supply its airflow to several rooms, and the
indoor unit may be installed inside the ceiling of a room or corridor. The
installation is simple and flexible, and there is no need to have specified personnel
for management, thus cutting down the expenses; the machine is lighter and
smaller, and convenient for installation, it takes an extremely small building space,
thus lower the construction cost; the indoor unit is to be concealed inside the
ceiling, and hence the usable space can be saved and the room decoration will
not be affected.
-4-

AB242ACBEA AB28NACBEA
Products characteristic:
Completely invisible machine body:
The whole machine body is completely concealed inside the ceiling. Due to its compact size it neither
breaks the harmonization of indoor decoration nor occupies the indoor spaces. The stylish look of air
conditioner allows it to blend right into ceiling.
Superbly efficient healthy filter:
Superbly efficient antibiotic materials are utilized and can prevent germs from
breeding efficiently .
Flexible and easy installation
Slim design with machine body, completely ceiling concealing and portable shape, all make it greatly
easier to install. Moreover, it occupies least constructional spaces, which help to reduce constructional
cost prices. It also features a specific drainage system with up to 600mm lift , which allows reducing
installation spaces and ensures to drain smoothly. Thanks to its "smudge-free" mobile outlet grill,
the ceiling can be protected from pollution effectively and allow the airflow to fit people's
comfortable need much more.
Compensation function of power failure:
When meeting a power failure during running, no matter how long it will be, once the power is
restored, air conditioner will automatic restart with the previous status.
Safety and reliable control due to various signal controls
1 Inputting with press buttons on the panel
2 Inputting with temperature sensors (indoor ambient temperature sensors, indoor coil pipe
temperature sensors,
3 Piping pressure signals
4 Compressor current signals
5 Testing signals
6 System time-shorten signal
7 Water overflowing signal
8 Communication signals between indoor unit and front plate or between indoor unit and outdoor
unit .
Silent design
The use of radial outward flow turbine fan produces larger cyde airflow volume and acts to
significantly decrease operating noise.
When using remote-controlling mode, it is comfortable and convenient to operate.
Advanced wire-controller and convenient remote-controller
The new wired controller can connect with 16 indoor units without any device such as detectors.
The new remote controller can be used for single unit or muti-free unit, or H-MRV,very convenient.
Cassette type:
In addition, it can be compatible with the old remote controllers.
Low ambient temperature cooling function (optional)
Equipped with high/low pressure protection switch
NEW
NEW
The indoor units of AU282AHBEA and AU28NAHBEA are the same.

Climate type
Type of Air Conditioner
T1 T2 T3
Cool only 18 43 035 21 52
Heat pump -7 43 -7 35 -7 52
Electricity heating 43 35 52
d). Brief Introduction for T1\
T2\ T3 working condition
Climate type
Type of Air Conditioner
T1 T2 T3
Cool only 18 43 10 35 21 52
Heat pump -7 43 -7 35 -7 52
Electricity heating 43 35 52
-6-

2 Specifications
Model
ItemAU242AHBEA AC242ACBEAAB242ACBEA AD242AMBEAEAD242AHBEA
Cooling capacity①Btu/h 24000 24000 24000 24000 24000
Heating capacity①Btu/h 27000 27000 27000 27000 27000
Power 1PH 220-230V 50Hz
Cooling power(W) 2700 2700 2700 2700 2700
Cooling EER(Btu/W) 8.89 8.89 8.89 8.89 8.89
Cooling operation current
(A) 12.5 12.5 12.5 12.5 12.5
Power factor(%) 0.95 0.95 0.95 0.95 0.95
Heating power (W) 2700 2700 2700 2700 2700
Heating COP(Btu/W) 10 10 10 10 10
Cooling operation current
(A) 12.5 12.5 12.5 9.5 9.5
Power factor(%) 0.95 0.95 0.95 0.95 0.95
Operation data
Noise level（high-mid-low）
dB(A) 58 48-44-38 39-37-35 35-32-29 42-41-40
External
(L×W×H) 948x340x830 990×655×199 840×840×240 990×650×300 820×830×360
Dimension
mm×mm×mm
Package
(L×W×H) 1050x440x979 1150×750×300 910×910×300 1137×800×320 940×1051×510
Weight
(net/gross)
Kg/Kg 74/89 30/39 28/30 40/57 48/58
Compressor Model ZR34K3E-PFJ-522 \ \ \\
Manufacture
Copeland \ \\\
Starting method PSC \ \\\
Starting
current(A) 75 \ \\\
Protection
devices IOL \ \\\
Crankcase heater power (W) \ \ \\\
Heat exchanger 0.92m20.084 m20.199m20.199m20.199m2
Refrigerant control capillary capillary capillary capillary capillary
Refrigerant Type R407C \ \
Charge(g) 2400 \ \ \
Defrost method Auto Auto Auto Auto Auto
Fan Type×Number Axial fan×1 Axial fan×2 Cross flow fan×2 Cross flow fan×2Cross flow fan×2
Fan motor Motor output (W) 130 45 40 100 130
Air-flow （high-mid-low）m3/h 4000 900/840/7901300/1100/870 1470/1300/1100 900/1250/1500
Anti-vibration and sound
insulation devices XPE XPE XPE XPE XPE
Control method
（remote/wire-controlled ）\ Remote
controlled
Remote
controlled
Wired
controlled
Wired
controlled
Safety devices Fuse Fuse Fuse Fuse Fuse
Liquid pipe:(mm) Φ9.52 Φ9.52 Φ9.52 Φ9.52 Φ9.52
Dimension
of
refrigerant
pipe
Gas pipe:(mm)
Φ15.88 Φ15.88 Φ15.88 Φ15.88 Φ15.88
Connection method
Bugle joint Bugle joint Bugle joint Bugle joint Bugle joint
Drainage pipe(material ,
I.D./O.D.)Mm \ PVC 26/32 PVC 25/32 PVC 25/32 PVC 26/32
Appearance colour white white white white white
Accessories To see manual To see manual To see manual To see manual To see manual
-7-

Function cooling heating
Capacity BTU/h 24000 28000
Capacity kW 7.1 7.9
W2.7 2.7
W3.2 3.2
EER or COP W/W 2.6 2.9
Dehumidifying capacity 10‐³×m³/h
Power cable
Power source N，V，Hz
A / A 13.5/16 14.5/19.5
Start Current A
Fuse A
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope ℃
External （L×W×H）mm×mm×mm
Package （L×W×H）mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired)
kW
dB(A)
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
Refrigerant
Fan
Heat exchanger
1.8
48/46/44
remote type
MAX.Piping length 30
PIPING
R407C/2400
65
Pipe
9.52
15.88
flared
Between I.D &O.
MAX.Drop 20
TP2M/9.52
Weight (Net / Shipping) 45/57
PVC 26/32
1821×532×300
item Model AP242ACBEA
3.0
3*3.0
Total power input
Max. power input
Running /Max.Running
current
centrifugal*1
Dimension
0.338
1000/900/800
2-7
1920×625×377
0.04
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7℃DB/6℃WB
560±30/ 490±40/380±50
1, 220~230, 50
Indoor unit
AP242ACBEA
Noise level (H-M-L)
Electricity Heater
60
21

Function
Coo
lin
g
H
eat
in
g
Capacity BTU/h 28000 32000
W3200 3300
W4500 5500
EER or COP BTU/W 8.75 9.7
Dehumidifying capacity 10‐³×m³/h
Power cable
Power source N，V，H
z
A / A
Start Current A
Unit model (color)
Fan Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Heat exchanger Type / Diameter mm
Total Area m²
Temp. scope ℃
External （L×W×H）mm×mm×mm
Package （L×W×H）mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired)
Fresh air hole dimension mm
kW
dB(A)
kg / kg
External （L×W×H）mm×mm×mm
Package （L×W×H）mm×mm×mm
kg / kg
Unit model (color)
Compressor Model / Manufacture
Type
Fan Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Heat exchanger Type / Diameter mm
Total area m²
Temp. scope ℃
External （L×W×H）mm×mm×mm
Package （L×W×H）mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Refrigerant Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
item Model
A
U28NAHBEA
Total power input
Max. power input
3
/
3N 380V-400V 50H
Z
Running /Max.Running
current
Cooling 5.5/8.0 Heating 5.8/9.5
30
Dimension
Electricit
y
Heater
Noise level (H-M-L)
Weight (Net / Shipping)
Panel
Dimension
/
/
Weight (Net / Shipping)
/
Indoor unitOutdoor unit
A
U28NAHBEA
(
WHIT
E£©
ZR40K3E-TFD-522 Co
p
ela
n
Scroll
A
xial-flow×1
1180+3
0
130
4000
TP2M/9.52
0.92
43-60
Dimension 948x340x830
1050x440x979
/
main ca
p
illar
y
2.4x22
0
；auxiliar
y
ca
p
illar
y
Defrosting
A
uto
/
58/--/50
Type of Four way valve
/
MAX.Drop 20
XP
E
/
Weight (Net / Shipping) 74/89
MAX
.
Pi
p
in
g
l
e
n
gt
h
30
PIPING
R407C 2400
60
Pipe
9.52
15.88
flared
Between I.D &O.D
-8-