Connecting The Refrigerant Piping - Daikin RXYQ6BRY16 Installation Manual

10.2 Connecting the refrigerant piping

NOTICE
Installation shall be done by an installer,
the choice of materials and installation shall
comply with the applicable legislation.
10.2.1 Decide front or side (bottom) connection
Installation of refrigerant piping is possible as front
connection or side connection (when taken out from
the bottom) as shown in the figure below.
3
2
1
When the front connection, remove the slit hole of the
•
piping intake and lead out piping to the piping intake.
When side connections, remove the through hole
•
cover for punching a hole and return the through hole
cover to original place and tighten a screw.
Lead out the piping from the bottom frame.
Punching a hole
the areas marked " ".
Through hole
cover
Remove
CAUTION
Precautions when cutting the slit holes and
removing the through hole cover:
Open the slit holes with a cutting nippers or
•
similar tool.
After cutting the slit holes, it is recommended
•
to remove burrs in the slit holes and paint the
edges and areas around the edges using the
repair paint to prevent rusting.
When passing electrical wiring through the slit
•
holes, protect the wiring with a conduit or
bushings, making sure not to damage the
wiring.
01_EN_3P748230-1.indd 25
1 Left-side connection
2 Front connection
3 Right-side connection
Cut
slit
slit hole
[After punching a hole]
Return the through hole
cover to original place
and tighten a screw.
10.2.2 Remove the pinched pipes
WARNING
Never remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve
may blow off the pinched piping.
Failure to observe the instructions in procedure
below properly may result in property damage or
personal injury, which may be serious depending
on the circumstances.
Use the following procedure to remove the pinched
piping:
1 Remove the valve cover and make sure that the
stop valves are fully closed.
1
2
3
4
Close direction
2 Connect the vacuuming/recovery unit through a
manifold to the service port of all stop valves.
6
1
4
2 3 5
1 Gauge manifold
2 Dry Nitrogen
3 Measuring instrument
4 Refrigerant R410A tank (siphon system)
5 Vacuum pump
6 Charge hose
7 Gas pipe stop valve
8 Liquid pipe stop valve
9 Refrigerant auto charge valve (needle valve)
10 Valve
11 Gas flow
12 Stop valve service port
A Valve A
B Valve B
3 Recover gas and oil from the pinched piping by
using a recovery unit.
CAUTION
Do not vent gases into the atmosphere.
4 When all gas and oil is recovered from the pinched
piping, disconnect the charge hose and close the
service ports.
1 Service port and
service port cover
2 Stop valve
3 Field piping connection
4 Stop valve cover
8
9
7
A
B
12
10
11
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