Samsung AG026TN1DKH/EU, Installation Manual

13

English

Installation Pr

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Step 6  Connecting the water pipes

1 

Purge inert gas.
•  The fan coil unit comes with nitrogen gas (inert 

gas) charged at the factory for protection of the 
unit during transportation. 
Remove the protective caps from the piping to 
purge inert gas.

  CAUTION

•  To prevent foreign objects from entering the piping, 

do not remove the cap until the piping connection is 
ready.

2 

Connect the pipes.
•  Be sure to use a metal pipe for the piping outlet. 
•  Be careful not to erroneously change the piping 

inlet and outlet connections.  
(Outlet: air vent valve)

•  Be sure to attach a valve to each of the piping inlet 

and outlet.

•  Be sure to insulate all of the water pipes and the 

drain pipe. 

•  The maximum operating water pressure of the fan 

coil is 1.0 MPa. Design your air conditioning system 
so that the operating water pressure becomes  
1.0 MPa or less. 

•  Design the piping so that air clogging does not 

occur.

•  Use Teflon tape on the T-type screws to prevent 

water leakage.

Step 7  Performing the water leak test 

and insulating the piping

1 

Perform the water leak test.
•  Make sure that there is no water leakage from the 

water pipes connected to the fan coil unit.

2 

Insulate the pipes.
•  After confirming that there is no leakage from the 

water inlet and outlet pipes and the drain pipe, 
insulate all of them.

•  First, insulate the 2 way electric valve before 

insulating the water inlet and outlet pipes.  
(Covered by the installation site) 

•  After the valve insulation is completed, insulate the 

water inlet and outlet pipes and the drain pipe.

a 

Choose insulation materials suitable for the pipes.
•  Consider the insulation thicknesses suitable for 

different pipe diameters.

•  The general criterion for choosing insulation 

meterials is that it withstands less than 85% 

˵Ї͔̈ʒ̈ϩцɇϩߤߡঐϩʪ͔ΧʪθɇϩЇθʪࢋÃ˙˵Ї͔̈ʒ̈ϩц̈ϑ

higher than this general condition, choose one 
step higher criterion from the following table:

Pipe

Pipe 

diameter 

(mm)

Insulation materials [heating 

and cooling (mm)]

Remarks

General 

ʀͱ͝ʒ̈ϩ̈ͱ͝ࠋࣕ

*

(less than  

ߪߧ१ɇϩߥߢঙ࣒

High humidity 

ʀͱ͝ʒ̈ϩ̈ͱ͝ࠌࣕ

*

(more than 

ߪߧ१ɇϩߥߢঙ࣒

EPDM, NBR

Water 

pipes

Ø 15.88

19 t

32 t

Heat 

resistance 

temperature: 

ߢߣߡঐͱθ

more

࣑ࠞ

*

  When installing the piping in locations and 

environments that meet the following conditions, use 
the same insulation for the general condition.

– When humidity inside the ceiling tex is high even if 

it is cooled.

– When the room ceiling is high (for example, a large 

church chapel, theater, multi-story open lobby, 
staircase classroom) and there is a large difference 
between the temperatures at the floor and ceiling.