Samsung AQ12NBMD2/XSV, AQ12NBMDXSV manual Cutting/Extending the Piping, Uneven Thickness

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INSTALLING THE INDOOR UNIT

Cutting/Extending the Piping

5 metres of piping is supplied with the air conditioner(Optional). This length can if necessary be:

◆Extended to a maximum of 15 metres

◆Shortened as required

☛If more than 5 metres of piping is required:

◆The assembly cable must also be extended

◆Refrigerant must be added to the circuit by an approved installer; otherwise, the indoor unit may freeze

1Make sure that you have the required tools available (pipe cutter, reamer, flaring tool and pipe holder).

2 If you wish to shorten the piping, cut it using a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle with the side of the pipe, and referring to the illustrations below for examples of edges cut correctly and incorrectly.

90O

Oblique

Rough

Burr

O

x

x

x

3To prevent any gas from leaking out, remove all burrs at the cut end of the pipe, using a reamer.

4Slide a flare nut on to the pipe and modify the flare.

Pipe	Outer Diameter (D)	Depth (A)
Liquid refrigerant	6.35 mm	1.3 mm
Gas refrigerant	9.52 mm	1.8 mm
Gas refrigerant	12.70 mm	2.0 mm

5Check that the flaring is correct, referring to the illustrations below for

examples of incorrect flaring.

x

x

x

x

Inclined

Damaged Surface

Cracked

Uneven Thickness

6Align the pipes to be connected and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.

Pipe	Outer Diameter	Torque (kgf•cm)
Liquid refrigerant	6.35 mm	140~170
Gas refrigerant	9.52 mm	250~280
Gas refrigerant	12.70 mm	380~420

7For further details on how to connect up to the outdoor unit and purge the circuit, refer to page 39.

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Contents OWNER’S Instructions Safety Precautions Contents Indoor Unit View of the UnitAir InletRear Air Outlet Connection Valve Remote Control Buttons and Display Getting Started Inserting the Remote Control Batteries Way Function Even though you have lost your remote controlUsing with the indoor unit Selecting with the Remote ControlSET Temp Selecting the Automatic Operating ModeCooling Your Room Heating Your Room Except the cooling only models You can select the Heat mode only in the heat pump modelsChanging the Room Temperature Quickly Removing Excess Humidity Airing Your Room Recommendation Adjusting the Air Flow Direction VerticallyAdjusting the Air Flow Direction Horizontally Minutes to 24 hours Setting the On TimerTo Cancel the On Timer To Cancel the Off Timer Setting the Off TimerTo Cancel the Sleep Timer Setting the Sleep TimerTopic Recommendation Operating RecommendationsHave switched off the breaker used for the unit Temperature and Humidity RangesCleaning Your Air Conditioner Mode Outdoor Temperature Indoor Temperature Indoor HumiditySolving Common Problems Model Indoor unit Power Supply Installing a Filter OptionTechnical Specifications Installation Manual Safety Precautions Fixing the Unit in Position Indoor Unit Deciding Where to Install the Air ConditionerMm or more Accessories in the Indoor Unit Case Air Conditioner and AccessoriesThen follow Steps Fixing the Installation PlateCooling only models Connecting the Assembly CablePurging the Unit Heat pump modelsTo install the drain hose, proceed as follows Installing and Connecting the Indoor Unit Drain HosePipe Installing and Connecting the Indoor Unit Assembly PipingUneven Thickness Cutting/Extending the PipingOne electric cable must be connected to the outdoor unit Connecting the Cables to the Outdoor UnitChecking Correct Earthing Fixing the Unit in Position If you have used Then Connecting Up and Purging the CircuitUse Vacuum Pump as shown at the figure Performing Leak Tests To check for gas leaks on Then, using a leak detector CheckPlacing the Indoor Unit in Position Checking and Testing Operations Explaining Operations to the Owner This AIR Conditioner is Manufactured by