Pipe Connection; Connecting The Refrigerant Piping - Daikin CMSQ200A7W1B Manual De Instalación

6.3.

Pipe connection

Be sure to perform a nitrogen blow when brazing and to read the
paragraph "Caution to be taken when brazing refrigerant piping" on
page 4 first.
NOTE The pressure regulator for the nitrogen released when
doing the brazing should be set to 0.02 MPa or less.
(See figure 9)
1 Refrigerant piping
2 Location to be brazed
3 Nitrogen
4 Taping
5 Manual valve
6 Regulator
7 Nitrogen
Do not use anti-oxidants when brazing the pipe joints.
Residue can clog pipes and break equipment.
6.4.

Connecting the refrigerant piping

1 Front connection or side connection
Installation of refrigerant piping is possible as front connection or
side connection (when taken out from the bottom) as shown in
the figure.
1 2
1 Left-side connection
2 Front connection
3 Right-side connection
Precautions when knocking out knock holes
NOTE
Be sure to avoid damaging the casing
After knocking out the holes, we recommend you
remove the burrs and paint the edges and areas
around the edges using the repair paint to prevent
rusting.
When passing electrical wiring through the knock
holes, wrap the wiring with protective tape to
prevent damage.
2 Removing the pinched piping
When connecting refrigerant piping to the outdoor unit, first
remove the pinched piping. Do not vent gases into the
atmosphere.
Removing of the pinched piping must be carried out according to
the following procedure:
1. Make sure the stop valves are closed.
2. Connect a charge hose to the service ports of all stop
valves.
3. Recover the gas from the pinched piping.
4. When all the gas is recovered from the pinched piping,
dissolve the brazing using a burner and remove the
pinched piping.
Any gas remaining inside the stop valve may blow off
the pinched piping, causing damage or injury.
CMSQ200+250A7W1B
Air conditioning system
4PW47543-1
3
See figure 7.
1 Pinched piping
2 Stop valve
3 Service port
4 Point of melting the brazing metal
Precautions when connecting field piping.
Perform brazing at the gas stop valve before
brazing at the liquid stop valve.
Add brazing material as shown in the figure.
Be sure to use the supplied accessory pipes
when carrying out piping work in the field.
Be sure that the field installed piping does not
touch other pipes, the bottom panel or side
panel. Especially for the bottom and side
connection, be sure to protect the piping with
suitable insulation, to prevent it from coming into
contact with the casing.
3 One outdoor unit installed
(See figure 6)
Front connection:
Remove the stop valve cover to connect.
Bottom connection:
Remove the knock holes on the bottom frame and route the
piping under the bottom frame.
A Front connection
Remove the stop valve cover to connect.
B Bottom connection:
Remove the knock holes on the bottom frame and route the piping
under the bottom frame
1 Gas pipe stop valve
2 Liquid pipe stop valve
3 Service port for adding refrigerant
4 Gas side accessory pipe (1)
5 Gas side accessory pipe (2)
6 Liquid side accessory pipe (1)
7 Liquid side accessory pipe (2)
8 Brazing
9 Gas side piping (field supply)
10 Liquid side piping (field supply)
11 Punch the knockout holes (use a hammer)
Installation manual
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