Haier AD96NAHAEA User manual

Commercial Air Conditioning
SERVICE MANUAL
Models
AD96NAHAEA
AP96NACAEA
AU96NATAEA
 Features
 The outdoor can match with both of duct and cabinet type indoor unit
 The indoor unit is identical for heat pump and cooling only unit
 Infra red remote controller or wired controller
 Central control and full automation, if connected with a central controller
 24-hour timer (standard)
 Auto-restart function
 Strong energy distribution
Manual code: SYJS-001-05REV.0 Edition: 2005-01-04

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
2
CONTENTS
Contents………………………………………………………...2
1. Description of products& features………………………..3
2. Specification…………………………………………………5
3. Safety precaution……………………………………………10
4. Net dimension of indoor and outdoor……………………..12
5. Installation instructions………..……………………………15
6. Parts and functions…………………………………………37
7. Remote controller functions……………………………….38
8. Refrigerant diagram…………………………………………58
9. Electrical control functions………………………………….59
10. Diagnostic information (trouble shooting)……………….67
11. Electrical data………………………………………………71
12. Exploded view and parts lists…………………………….73
13. Performance curves……………………………………….81
14. Noise level charts………………………………………….85
15. Air velocity distribution…………………………………….89

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
3
1.DESCRIPTION OF PRODUCTS & FEATURES
1.1. Products code explanation
AU 96 N A T A E A
Climate type: T1 (see table 1)
Design number (A stands for design sequence, fixed
frequency type)
Product type: A stands for heat pump type, refrigerant is R22
B stands for heat pump type, refrigerant is R407C
M stands for cool only type, refrigerant is R22
N stands for cool only type, refrigerant is R407C
Appearance character
Product series: A stands for 1 to 1
Applicable voltage: 2 stands for 220-230V/50Hz,
4 stands for 220V/60Hz，N stand for 380-400V/50Hz
Cooling / Heating capacity,96=96000BTU/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, "E" stands for ceiling
concealed type, “U” stands for outdoor unit
Air Conditioner
1.2 Brief Introduction for T1、T2、T3 working condition
1.3 Operating Range of Air Conditioners
Temp. Mode Rated Maximum Minimum
DB ℃27 32 15
Indoor
WB ℃19 23 14
DB ℃35 43 -5
Cooling
Outdoor
WB ℃24 26 6
DB ℃20 27 10
Indoor
WB ℃14.5 --- --
DB ℃7 23 -10
Heating
Outdoor
WB ℃6 18 ---
Climate type
Type of Air
Conditioner T1 T2 T3
Cooling Only 18 ℃~43℃10℃~35℃21℃~52℃
Heat pump -7℃~43℃-7℃~35℃-7℃~52℃
Electricity Heating ~43℃~35℃~52℃

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
4
1.4 Product features
Universal outdoor unit
The outdoor unit can match with duct and cabinet type indoor unit.
High static pressure design for duct unit
The designed exterior static pressure can be adjusted from 0Pa~196Pa. The air outlet duct can be
selected freely, generally, there are two types as follow:
Duct unit: super thin unit body, no occupying the indoor space
The whole unit can be concealed in the building, without effect of the indoor décor.
With air inlet filter, enhance the air quality
The high efficiency filter can collect the dirt and remove the bacterium, which can be installed on the
easy-to-unload place, convenient to be cleaned.
Cabinet unit: newly designed luxurious LCD operation panel
On the front panel, you can find there is a luxurious operation panel. Just slightly pressing, the
comfort will come around you. Meanwhile, the unit is equipped with the advanced large angel remote
receiving technology.
Multiple control types
or( + )
The duct and cabinet unit can be controlled be the wired controller orby the infrared controller.The
cabinet type unit can be controlled with the infrared controller. If the unit is duct type and you want
infrared type, you need to add an infrared controller YR-H71.
And the infrared controller can be equipped with the controller holder, convenient to fix the
remote controller.
B:Branch duct system
A:Main duct system

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
5
Convenient infrared remote controller
The newly designed infrared remote controller YR-H71 can be used for all indoor units of single type,
multi split type, and H-MRV type except for the cabinet unit. This controller can be compatible with all old
remote controllers except for that of cabinet units.
Auto–restart function (optional)
All indoor units have auto-restart function. When the power supply cut off suddenly, the unit will
automatically recover the previous running mode once the power supply is on.
Self-diagnostic function
In the course of operation, if the failure occurs, the failure code will display on the wired controller or
on the operation panel. Then according to the failure code chart, you can eliminate the failure soon.
Central control function, if connected with a detector and a central
controller
24-hour timer (standard)
Changeover function
The unit can realize changeover function to enhance the reliability and the precision by connecting a
detector.

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
6
2. SPECIFICATION
Function cooling heating
Capacity BTU/h 92000 96000
Capacity W 27000 28000
Sensible heat ratio 75% /
W10000 9000
W 13000 13000
EER or COP W/W 2.70 3.11
Dehumidifying capacity 10‐³×m³/h
Power cable
Signal cable section
Connecting cable section
Wired control cable for wired control unit section
Power source N, VAC, Hz
A / A
Start Current A
Class of anti electric shock
Circuit breaker A
Max. operating pressure of heat side Mpa
Max. operating pressure of cold side Mpa
Unit model (color)
Model / Manufacture
cm³
Type × Number
Speed r/min
Fan motor output power W
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
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
40
1*1.5
3*2.5
3*0.5
Ⅰ-class
/
scroll
Refrigerant
Compressor
Fan
34*2
≤65
Axial × 1
JT300D-Y1L / DAIKIN
Automatic
NO
30
Weight (Net / Shipping) 161/185
Type of Four way valve /
XPE
Defrosting
/
990*760*1700
1150*925*1870
about 1.8
cooling: 43~60 / heating: 6~7
PIPING
R22/8500
115
Pipe 12.7
28.58
flared
MAX.Drop 15
MAX.Pi
p
in
g
len
g
th
Between I.D &O.D
item Model AU96NATAEA
10
5*6.0
Total power input
Max. power input
Capillary tube
Heat exchanger
TP2M / 9.52x0.35
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
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound
pressure noise level.
3, 380-400, 50
cooling 18/22.8 heating16.5/22.8
36
Running /Max.Running
350
10000/-/6000
Outdoor unit
AU96NATAEA（WHITE）
Dimension
3.0
3.0
/
MINERAL
direct startupStarting method
Protection type
Type
Oil type
Oil model
3000
inner thermal protection, 3-phase protection, pressure
Oil charging

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
7
Function cooling heating
Capacity BTU/h 92000 96000
Capacity kW 27000 28000
Sensible heat ratio 75% /
W10000 9000
W 13000 13000
EER or COP W/W 2.70 3.11
Dehumidifying capacity 10‐³×m³/h
Signal cable section
Connecting cable section
Power source N, V, Hz
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power W
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)
Fresh air hole dimension mm
kW
dB(A)
kg / kg
1*1.5
3*2.5
Centrifugal×2
2-7
TP2M/Φ9.52
0.41
270
Dimension
58/-/51
Fan
Heat exchanger
0
Wired
/
1800*980*495
PVC 18/20
1570*840*360
item Model AD96NAHAEA
10
Total power input
Max. power input
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
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound
pressure noise level.
1070±30/860±40/960±50
1, 220-230, 50
Indoor unit
AD96NAHAEA/grey
Noise level (H-M-L)
Electricity Heater
3600
Weight (Net / Shipping) 92/100

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
8
Function cooling heating
Capacity BTU/h 92000 96000
Capacity kW 27000 28000
Sensible heat ratio 75% /
W10000 9000
W 13000 13000
EER or COP W/W 2.70 3.11
Dehumidifying capacity 10‐³×m³/h
Signal cable section
Connecting cable section
Power source N, V, Hz
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power W
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)
Fresh air hole dimension mm
kW
dB(A)
kg / kg
3*2.5
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
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound
pressure noise level. The detailed method please refer to the following information:
630±30/420±40/360±50
Dimension
58/-/51
Fan
Heat exchanger
2-7
0
1, 220-230, 50
Indoor unit
AP96NACAEA/ivory white
Noise level (H-M-L)
Electricity Heater
4800
Weight (Net / Shipping) 102/110
Centrifugal×2
item Model AP96NACAEA
10
1*1.5
Total power input
Max. power input
TP2M/Φ9.52
0.41
250
Remote
/
1360*510*2030
PVC 18/20
1200*320*1850

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
9
duct unit without auxiliary duct:
Note: ⊙is the real time analyser position
outdoor unit:
1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right
directions.
2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right
directions.
measured point:
H ( height to the ground) = (h (unit height) + 1m) /2
and, it is 1m to each side.
standing-on-floor unit: If the unit cooling
capacity is over 28000W, the noise level should
be measured at the front, left, right directions
respectively.
Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction.
Testing method:
1m
1m
1.4m
2m
duct
h
1m
1m
1m
1m

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
10
3. Safety precaution of indoor and outdoor
Carefully read the following information in order to operate the airconditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING!
CAUTION! Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.
Incorrect operations may result in severe consequences of death or serious injuries.
IN TRUCTION : These information can ensure the correct operation of the machine.
Be sure to conform with the following important Safety Cautions.
The afety Cautions should be at hand so that they can be checked at any time when needed.
If the conditioner is transferred to the new user this manual should be as well transferred to the new user.
WARNING!
If any abnormal phenomena is found
(e. g.smell of firing), please cut off the
power supply immediately, and contact
the dealer to find out the handling
method.
Don't dismantle the outlet of the
outdoor unit.
The exposure of fan is very dangerous
whichmay harm human beings.
switch
off
In such case to continue using the
conditioner will damage the conditioner
and may cause electrical shock or fire
hazard.
Incorrect maintenance and repairment
may cause water leak electrical shock
and fire hazard.
When need maintenance and repairment,
call dealer to handle it.
After a long time use of air-conditioner
the base should be checked for any
damages.
If the damaged base is not repaired the
unit may fall down and cause accidents.

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
11
Air-conditioner can't be installed in
the environment with inflammable
gases because the inflammable gases
near to air-conditioner may cause fire
hazard.
Connect earthing wire.
Use discharge pipe correctly to ensure
efficient discharge.
Earthing wire should not be con-
nected to the gas pipe water pipe
lightning rod or phone line in-correct
earthing may cause shock.
Incorrect pipe use may cause water
leaking.
Earthing
WARNING!
Installed electrical-leaking circuit
breaker.
It easily cause electrical shock without
circuit breaker.
Please let the dealer be responsible for
installing the conditioner.
Incorrect installation may cause water
leak electrical shock and fire hazard.
Call the dealer to take measures to
prevent the refrigerant from leaking.
If conditioner is installed in a small
room be sure to take every measure in
order to prevent suffocation accident
even in case of refrigerant leakage.
When conditioner is deinstalled or
reinstalleddealer should be responsible
for them.
Incorrect installation may cause water
leaking electrical shock and fire hazard.
No goods or nobody is permitted to
placed on or stand on outdoor unit.
The falling of goods and people may
cause accidents.
Don't operate the air-conditioner with
damp hands.
Otherwise will be shocked.
Only use correctly-typed fuse.
May not use wire or any other materials
replacing fuse other-wise may cause
faults or fire accidents.

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
12
4. Net dimension of indoor and outdoor
9D<=A78;63
Outdoor dimension
66-
33-
.1-
.23-
4--
43-
33-
61-
.2-
3/
160
..2
15
/3
52
./-
./-

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
13
Installation dimension
Over 900 Over 900
Check Hole
Over 100
Ceiling
Over 300
(600x600)
(900x1730)
60100
over 400 Over 200
35
900
35
Control Box
Gas pipeLiquid pipe
830
794
18
25
18
1570
1690
100
25
80
95 60
1640
60
12.7(1/2") 28.58(1-1/8")
Air inlet
65
13
138
250
13
138
13
163
35 6x200=1200 1500
200
M5x20pcs
13
163
35
(mm)
Air outlet
M10x4pcs
M5x20pcs
138
13
13
138
60
138
250
77
13
200
6X200=1200
1450
60
138
13
45
25
49
DRAIN PIPE VP25
25
510
80
30
310
360
106
25
170
185
530
A
Model: AD96

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
14
Model: AP96
100
50
50
50 600
1000
air outlet
air inlet
installation space
liquid side
gas side
drain water
277
272
218
142 78
310
95 98
1828
320 20-50
adjustment range
425 5050 50 425
15 1222.5
315 442 15
82
8
8 300 50200
100
72
19
36
142
150
view A
83 83
8- 4manual tap
80
air inlet 1192.5
813
787.5
40 880
1850
650
179
270
200
105
1148
1200
A
air outlet
power terminal block terminal block center
terminal block center
(mm)
20-50

Note: Obstacles should be 2000mm off the top of the out-
door unit. Obstacles nearby should be 400mm lower
than the top of the unit.
1. Handing
As there is no protective package for the outdoor unit,so
the following points merit attention
(1) When forklift is used, insert the fork into the holes in
the base plate.
(2) When crane is used, lift the unit with 4 pieces of steel
rope with diameter above 6 mm.
(3) Put protective materials between the cable and the
unit to prevent deformation and damage of the surface.
2.Mounting
(1) The distance between two connections must not be
less than 20mm.
5.1 Outdoor installation procedure
Warning
Selection of installation site
It should be installed at places where it is firm enough to withstand the weight of the air
conditioner to prevent falling.
Typhoon and earthquake prevention. It should be installed according to specific
requirements.
Inasppropriate installation may lead to accidents.
(1)During installation, connect the outdoor unit and align
the mounting surface(See the figure on the right).Mount
the electric distribution device on the external side of
the unit in accordance to the installation instructions for
electric distribution device.
(2)To ensure good performance of the machine and facili-
tate installation and maintenance, adequate space must
be reserved (See figure on the right).
Installtion space
Blow out
Air inlet
Air inlet
maintenance plate
Over 300mm
Over 20mm
Over
20mm
Over
20mm
Over
20mm
Over
1000mm
(front side)
Air inlet
M12 foot screw bolt
4 screws each unit
Rope
Protection cushion
Base panel
Rope
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
15
5. Installation Instructions

Refer to the following figure for the distance between the
foundation bolts.
(2)When the refrigerant pipe is connected from the bottom of
the unit,the unit should be raised at least 500mm(see the
figure below)
(3)In snowy regions,snow-proof facilities should be used(see
the figure below).
(Poor snow-proof facilities may lead to damge.To avoid
inconveniences,the unit should be raised and snow-proof
covers should be installed at the air inlet and outlet.)
(4)During installation,anti-vibration rubber pads should be used
between the machine and the bracket.
3.Connection of refrigerant pipe
During installation,if refrigerant leakage occurs,ventilation measures must be taken.When
refrigerant meets with fire,hazadous gas will be produced.
After installation,make sure that there is no refrigerant leakage.
Refrigerant,if meeting with heaters and stoves,ect in the room,may produce hazardous gas.
Connection of refrigerant pipe
(1) The joints of the refrigerant pipe are inside the unit.Take off the access hole cover in front of
the unit.
(2) The pipe can be connected from the front or bottom of the outdoor unit.
(3) Remove the L-shaped pipe from the valve by welding and connect the accessory pipe to the
valve.
(4) In the case of front connection,cut the accessory pipe at the height of the fixing panel.Then
join the pipe with an elbow and let it go through the fixing panel.For the convenience of maintenance,
bend the pipe down (once) and then connect pipe to the right or left.
(5) In the case of bottom connection,join the pipe with accessory pipe through the holes in the
base plate of the outdoor unit,and connect pipe the left or right or the back.
Warning
Bottom plate
Tube to the tight
Tube to the back
Access hole cover
4
6
Tube fixing
panel
Tube to the left
Tube to the left Tube to the tight
Air inlet snow-proof cover Air outlet snow-
proof cover
Air inlet snow-
proof cover
Refrigerant tube
Above 500mm
Through hole*15x20*
1100
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
16

(6) During welding,the gas pipe valve must be cooled down with a wet cotton cloth.
During welding of the distri ution pipe
1.In case of brazing weld of joint,nitrogen must be filled in the pipe to prevent oxidization.
2.The refrigerant pipe should be newly-made and clean.During installation,do not let water and other
substance into the pipe.
3.Use two spanners to tighten the connecting nut.One spanner will make loose connection.
The torque moment should conform to the specified value.(Refer to the below)
Selection of tube material and size
Determinaltion of tube diameter (Refer to the diagram on next page for steps 1,2,3,4 and 5 below)
1.Tube between the outdoor unit and the first bypass(main tube)
The diameter of the main tube and the outdoor tube should be the same.
2. Tube between bypasses(sub-tube)
The diameter of the sub-pipe is determined according to the total capacity of all the connected
indoor units.But if it is larger than the capacity of the outdoor unit,the diameter should be determined
according the capacity of the outdoor unit.
Tube diameter
(mm)
12.70
Torque moment for
pre-installation (N.m)
49.0(5.0kgf m)
Install the nonreturn loop and oil trap
Torque moment for
tightening up (N.m)
53.9(5.5kgf m)
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
17
1.Outdoor is lower
liquid nonreturn loop
Indoor
Outdoor
2.Outdoor is higher
Outdoor
Oil trap (one per
6m)
Indoor

Field tube
installation
Field tube
installation
To the unit
To the unit
(Gas side)three-way valve
(Gas side )access hole
Detailed diagram of the
three-way valve
To the gauge
distributor
(Liquid side)access hole
Three-way valve fully closed liquid side
6.4
6.4
Copper pipe
Relief valve
Nitrogen bottle
VL VH Gauge distributor
High-pressure
gauge
Low-pressure
gauge
Three-way valve fully
closed(gas side)
Solder joint
Solder joint
Tightly
closed
Indoor unit
Indoor Outdoor
Access hole
Copper
pipe
Solder joint Tightly
closed
Tightly
closed
Access hole
Outdoor unit
(Liquid side)three-way valve
Crucial points:
When testing, never use oxygen,flamable and poisonous gases.
Step 1 Charge for more than 3 minutes under 0.3MPa(3.0kg/cm2g)
Step 2 Charge for more than 3 minutes under 1.5MPa(15kg/cm2g)
--Serious leakage may be found.
Step 3 Charge for more than 24 hours under 3.0MPa(3.0kg/cm2g)
--Small leakage may be found.
Check for pressure decrease
Without pressure decrease-Pass
With pressure decrease-Check for leaage.There will be a 0.01MPa(0.1kg/cm2g) pressure change
for every 1 C ambient temperature change during the 24-hour pressure charge.It should be
corrected during the test.
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
18

In the case of pressure decrease during steps 1 to 3 ,check the joints with the ear,hand or soapsuds for
leakage.Repair it by welding or tighten the connecting nut up.
Use vacuum pump to evacuate the air.Never use the refrigerant for the evacuation.
Drain off the nitrogen gas after the leak test and then connect the vacuum pump as shown in the figure
below.
The vacuum pumping must be done from both the liquid and gas inlets.
Check for leakage
Vacuum Pumping
Use a vacuum pump with high degree of vacuum(below-755mmHg) and large volume displacement
(above 40L/min)
The pumping time depends on the length of the connecting pipe.Generally,it takes about 2-3 hours.
Make sure that the Y-shaped valves on both the gas and liquid sides are closed before pumping.
If the vacuum can no reach-755mmHg within 2 hours,continue pumping for another 1 hour.
If the vacuum can no reach-755mmHg after more than 2 hour's pumping,close the valves VL and
VH on the gauge distributor and stop pumping.One hour later,check the vacuum again.If the
vacuum has changed,it means there is a leakage.Repair it.
After the above steps,replace the vacuum pump with the refrigerant pump and refill refrigerant.
To the unit
To the unit
(Gas side)three-way valve
(Gas side )access hole
Detailed diagram of the
three-way valve
To the gauge
distributor
(Liquid side)access hole
Three-way valve fully closed
liquid side
6.4
Copper pipe
Vacuum pump
Gauge distributor
High-pressure
gauge
Low-pressure
gauge
Three-way valve fully
closed(gas side)
Solder joint
Solder joint
Tightly
closed
Indoor unit
Indoor Outdoor
Access hole
Solder joint Tightly
closed
Tightly
closed Access hole
Outdoor unit
(Liquid side)three-way valve
Field tube
installation
Field tube
installation
P
Charging refrigerant
Refrigrant must be charged in liquid state.
Refrigerant bottle with or without a siphon
tube can be refilled with refrigerant upright
or upside down,Respectively.
Containers for R22 refrigerant must be
marked with R22 and a brown Stripe.
R407C refrigerant cannot share the same
instrument distributor and filling pipes.
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
19

Recharge refrigerant
When the outdoor valve is shut,fill the refrigerant from the access hole at the gas and liquid sides.
If the required filling is impossible,open all the gas and liquid valves,then slightly shut the gas
valve, run the compressor and fill the refrigerant from the access hole at the gas side.Now adjust
the gas valve to control the refrigerant flow,which will be gasified during absorption by the system.
If there is insufficient refrigerant in the system caused by leaks,refill it after the remaining refrigerant
is recollected.
Open all valves
Open all the valves of the outdoor unit.
Heat isolation of the pipes
Separate isolation should be made for the liquid and gas pipes.
Materials used for the pipe isolation at the gas side must withstand above 120 C temperature.
Refilling of refrigerant
After the vacuum pumping,replace the vacuum pump with the refrigerant pump and refill refrigerant.
Calculation of refrigerant quantity
The factory filled refrigerant into the piping excludes the part of pipes according to be refilled on the site.
Refill the amount of refrigerant into the piping according to the following formula.
The factory filled refrigerant is listed in the table below
The quantity of the refrigerant to be refilled during installation depends on the diameter and length
of the liquid piping.
The quantity of the refrigerant t be refilled on the site=Actual length of liquid tube x quantity of
refrigerant to be refilled for per meter of liquid pipe.
For AU96NATAEA
Charging refrigerant (R22) Before charging refrigerant, the pressure in the system
must be kept at least for 15 minutes under 130Pa, and the pressure will not go up
within 30 minutes, only in this case, the refrigerant can be filled.
When the connection pipe is less than 5 meters, additional refrigerant needs not be
charged. Once the connection jpipe is more than 5 meters, please recharge the
refrigerant as the following formula
Refrigerant quantity=(lenth of connection pipe-5m)*115g
Detailed procedures
a.Cut off the vacuum pump pipe to prepare charging refrigerant
b.Place the R22 container on the scales, switch off the low pressre valve of the
pressure pipe to make the liquid type refrigerant enter the system from the high
pressure side.
c.If the system pressure goes up, stop charging refrigerant and when the
refrigerant quantity arrives the rated value, switch off the high pressure valve,
then place the R22 container on the scales with the jaw to up. Open the low pressure
valve to start up the unit, at this time, the refrigerant is gas state.
When the charged refrigerant arrives the rated value, after confirming the refrigerant
quantity is proper, unload the flexible joint and install the copper nut of the connector.
Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
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