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4
INSTALLATION PROCESS
Indicate clearly who will be responsible for switch setting.
Determination of division work
Make connection clearly between outside, indoor,
Preparation of contract drawings
remote controller and option.
Take account of gradient
Sleeve and insert work
of drain piping
Check model name to
Installation of indoor unit
make sure the fitting
is made correctly
Special attention to dryness,
Refrigerant piping work
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Make sure airflow is sufficient
Duct work
Make sure no gaps are left where
Heat insulation work
the insulating materials are joined
Electrical work
Multiple core cable must not be used.
(connection circuits and drive circuits)
(suitable cable should be selected)
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm
Airtight test
must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least
Vacuum drying
5 torr, more than 1 hour
Recharge correctly as calculated in this manual. and record the
Additional charge of refrigerant
amount of added refrigerant
Make sure there are no gaps left between the facing materials
Fit facing panels
used on the ceiling
Refer to automatic addressing flowchart
Automatic addressing of indoor unit
Preheat the crank case with the electrical heater for more than 6 hours.
Run each indoor unit in turn to make sure the pipe work
Test run adjustment
has been fitted correctly
Explain the use of the system as clearly as possible to your customer and
Transfer to customer with explanation
make sure all relevant documentation is in order
!
CAUTION
• The above list indicates the order in which the individual work opera-
tions are normally carried out but this order may be varied where
local conditions warrants such change.
• The thickness of the piping should comply with the relevant local and
national regulations for the designed pressure 3.8Mpa(551.1psi).
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the refrigerant is
charged in its gaseous state, its composition changes and the sys-
tem will not work properly.)
OUTSIDE UNITS INFORMATION
!
CAUTION
• Ratio of the running Indoor Units to the Outside: Within 10 ~ 100%
• A combination operation over 100% cause to reduce each indoor unit capacity.
Combination Ratio(50~200%)
Outside Unit Number
Single outside unit s
Double outside unit s
More than Triple outside unit s
Notes: * We can guarantee the operation only within 130% Combina-
tion. If you want to connect more than 130% combination,
please contact us and discuss the requirement like below.
• If the operation of indoor unit is more than 130%, low airflow
operation is recommended in all the indoor units.
• If the operation of indoor unit is more than 130%, additional re-
frigerant is needed according to the Aheadquarter guidance.
• Over 130%, capacity is same as capacity of 130%, Same re-
mark is valid for power input.
Outside unit foundation work
The foundation must be level even
Installation of outside unit
Avoid short circuits and ensure
sufficient space is allowed for service
2
) there
Connection Ratio
200%
160%
130%
Power Supply : 3Ø, 460V, 60Hz
Model Name : ARWB***DAS4
Unit
HP
System Capacity
TON
Combination Unit
ARWB072DAS4
Model
Independent Unit
ARWB072DAS4
kg
Refrigerant Precharged Amount
lbs
Maximum Connectable Number of Indoor Units
kg
Net Weight
lbs
mm
755 × 997 × 500
Dimensions(WxHxD)
(29-23/32 x 39-1/4 x
inch
19-11/16) x 1
Liquid Pipes
mm(inch)
Refrigerant
Low Pressure
Connecting
mm(inch)
Gas Pipes
Pipes
High Pressure
mm(inch)
Gas Pipes
Inlet
mm(inch) PT40(1-1/2)(Internal thread) PT40(1-1/2)(Internal thread) PT40(1-1/2)(Internal thread)
Water
Connecting
Outlet
mm(inch) PT40(1-1/2)(Internal thread) PT40(1-1/2)(Internal thread) PT40(1-1/2)(Internal thread)
Pipes
Drain Outlet
mm(inch) PT20(3/4)(external thread) PT20(3/4)(external thread) PT20(3/4)(external thread)
10°C ~ 45°C
Cooling
(50°F ~ 113°F)
Temp. range of
Circulation water
-5°C ~ 45°C
Heating
(23°F ~ 113°F)
Unit
HP
System Capacity
TON
Combination Unit
Model
Independent Unit
kg
Refrigerant Precharged Amount
lbs
Maximum Connectable Number of Indoor Units
kg
Net Weight
lbs
mm
Dimensions(WxHxD)
inch
(29-23/32 x 39-1/4 x 19-11/16) x 1 (29-23/32 x 39-1/4 x 19-11/16) x 1
Liquid Pipes
mm(inch)
Refrigerant
Low Pressure
mm(inch)
Connecting
Gas Pipes
Pipes
High Pressure
mm(inch)
Gas Pipes
Inlet
mm(inch)
PT40(1-1/2)(Internal thread)
Water
Connecting
Outlet
mm(inch)
PT40(1-1/2)(Internal thread)
Pipes
Drain Outlet
mm(inch)
PT20(3/4)(external thread)
Cooling
10°C ~ 45°C(50°F ~ 113°F)
Temp. range of
Circulation water
Heating
-5°C ~ 45°C(23°F ~ 113°F)
Unit
HP
System Capacity
TON
Combination Unit
Model
Independent Unit
kg
Refrigerant Precharged Amount
lbs
Maximum Connectable Number of Indoor Units
kg
Net Weight
lbs
mm
Dimensions(WxHxD)
inch
(29-23/32 x 39-1/4 x 19-11/16) x 1 (29-23/32 x 39-1/4 x 19-11/16) x 2
Liquid Pipes
mm(inch)
Refrigerant
Low Pressure
mm(inch)
Connecting
Gas Pipes
Pipes
High Pressure
mm(inch)
Gas Pipes
Inlet
mm(inch)
PT40(1-1/2)(Internal thread)
Water
Connecting
Outlet
mm(inch)
PT40(1-1/2)(Internal thread)
Pipes
Drain Outlet
mm(inch)
PT20(3/4)(external thread)
Cooling
10°C ~ 45°C(50°F ~ 113°F)
Temp. range of
Circulation water
Heating
-5°C ~ 45°C(23°F ~ 113°F)
1 Unit
8
10
12
6
8
10
ARWB096DAS4
ARWB121DAS4
ARWB096DAS4
ARWB121DAS4
5.8
5.8
5.8
12.8
12.8
12.8
13
16
20
127 x 1
127 x 1
127 x 1
280 x 1
280 x 1
280 x 1
755 × 997 × 500
755 × 997 × 500
(29-23/32 x 39-1/4 x
(29-23/32 x 39-1/4 x
19-11/16) x 1
19-11/16) x 1
9.52(3/8)
9.52(3/8)
12.7(1/2)
22.7(7/8)
22.7(7/8)
25.4(1)
19.05(3/4)
19.05(3/4)
19.05(3/4)
10°C ~ 45°C
10°C ~ 45°C
(50°F ~ 113°F)
(50°F ~ 113°F)
-5°C ~ 45°C
-5°C ~ 45°C
(23°F ~ 113°F)
(23°F ~ 113°F)
1 Unit
14
18
12
14
ARWB144DAS4
ARWB168DAS4
ARWB144DAS4
ARWB168DAS4
3
3
6.6
6.6
23
29
140 x 1
140 x 1
309 x 1
309 x 1
755 × 997 × 500
755 × 997 × 500
12.7(1/2)
12.7(1/2)
28.58(1-1/8)
28.58(1-1/8)
19.05(3/4)
19.05(3/4)
PT40(1-1/2)(Internal thread)
PT40(1-1/2)(Internal thread)
PT20(3/4)(external thread)
10°C ~ 45°C(50°F ~ 113°F)
-5°C ~ 45°C(23°F ~ 113°F)
1 Unit / 2 Unit
20
24
16
20
ARWB192DAS4
ARWB240DAS4
ARWB192DAS4
ARWB144DAS4
ARWB096DAS4
3
3.0+5.8
6.6
6.6+12.8
32
39
140 x 1
(140 x 1) + (127 x 1)
309 x 1
(309 x 1) + (280 x 1)
755 × 997 × 500
(755 × 997 × 500) x 2
12.7(1/2)
19.05(3/4)
28.58(1-1/8)
34.9(1-3/8)
19.05(3/4)
28.58(1-1/8)
PT40(1-1/2)(Internal thread)
PT40(1-1/2)(Internal thread)
PT20(3/4)(external thread)
10°C ~ 45°C(50°F ~ 113°F)
-5°C ~ 45°C(23°F ~ 113°F)
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