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5.4.2 Removing the pinch pipe
WARNING
Remove the pinch pipe only when the internal gas is completely drained as shown on
the below instructions.
If gas still remains inside, the piping may crack if you melt the brazing filler metal of the
junction area with a burner.
Before connecting the piping, remove the pinch pipe in accordance with the following
instructions:
(1) Verify that the liquid
side and gas side
valves are closed.
(2) Cut the end of the
liquid side and gas
side pinch pipe and
vent the gas inside the
pinch pipe.
(3) After all the gas is
vented, melt the
brazing filler metal on
connecting part using
a torch and remove
the pinch pipe.
Valves
Pinch pipe
End of pinch pipe
5.4.3 Pipe connection
CAUTION
Seal the pipe route hole with putty (locally purchased) such that there are no gaps.
Small insects or animals that are trapped in the outdoor unit may cause a short circuit in the
electricalcomponentbox.
To prevent pipe damage; do not make sharp bends.
Bend the pipe at a radius of 70 mm or greater.
Do not bent pipe many times at same part to prevent break.
After completing all the pipe connection by brazing, perform the indoor unit pipe connec-
tion with a flare joint.
When removing the pinch pipe or brazing the joint pipe, carry out the work while cooling
down the valve sufficiently.
• Braze the joint pipe onto the valves at the liquid and gas side.
Install the joint pipe appropriately so that it can be connected easily with the main pipe.
• Braze the joint pipe at the liquids and gas side with the main pipe.
* Be sure to supply nitrogen when brazing.
Front piping
Liquid pipe
(locally
purchased)
Joint pipe
(accessory)
Fill the knockout with
putty (locally purchased)
Gas pipe
(locally purchased)
Model 072, 090
Reducer AD
(accessory)
Bottom piping
Elbow pipe
(accessory)
Joint pipe
(Locally
purchased)
Liquid pipe
(locally purchased)
Fill the knockout with
putty (locally purchased)
Gas pipe
(locally purchased)
5.5. Multiple connections
CAUTION
• Whenconnectingmultiple(maximum4)units,besuretoinstalltheunitwiththelarg-
est capacity nearest to the indoor unit.
Forexample:AJG180JATAH(OutdoorUnit1)+AJG180JATAH(OutdoorUnit2)+
AJG162JATAH(OutdoorUnit3)+AJG108JATAH(OutdoorUnit4)
• When connecting multiple units, set the unit with the largest capacity as the primary unit,
and the rest as the subordinate units.
(Refer to “7. FIELD SETTING”)
• When connecting multiple units, use the optional outdoor unit branch kit.
Outdoor unit 1
(Primary)
Outdoor unit 2
(Subordinate 1)
Outdoor unit 3
(Subordinate 2)
Outdoor unit 4
(Subordinate 3)
To indoor unit
Outdoor unit branch kit (optional) Outdoor unit branch kit (optional)
Liquid pipe
(locally
purchased)
Gas pipe
(locally purchased)
To indoor unit
(to main pipe)
To Outdoor
unit branch kit
To Outdoor
unit branch kit
To Outdoor unit branch kit
To outdoor unit
To outdoor
unit
Outdoor Capacity
2Units:Unit1≥Unit2
3Units:Unit1≥Unit2≥Unit3
4Units:Unit1≥Unit2≥Unit3≥Unit4
Branch kit restriction when install
Be sure following restriction.
(1) Installation angle
Install the outdoor unit branch kit horizontally level, within 0° to -10°, so that the refrigerant
separates evenly.
To indoor unit
To outdoor unit
Tooutdoorunitornextbranchkit
PROHIBITED
PROHIBITED
PROHIBITED
PROHIBITED
GOOD:
0° to -10°
GOOD:
Refer to the
table below (*1)
Outdoor unit branch kit *1: Allowable mounting angle
UTP-CX792B 0° to -5°
UTP-CQ567A 0° to -10°
Do not install
the outdoor
unit branch kit
vertically.
PROHIBITED PROHIBITED PROHIBITED
(2) Straight pipe length
Leave the distance 0.5 m or more for straight part to outdoor unit branch kit.
To indoor unit
(To main pipe)
To outdoor unit
To outdoor unit
To outdoor
unit
0.5 m or more
0.5 m or more
To indoor unit (To main pipe)
To outdoor unit
To outdoor
unit
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Productinformatie
| Merk | Fujitsu |
| Model | AJG072JATAH |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 5568 MB |
