Inspection And Pipe Insulation; Airtight Test/Vacuum Drying - Daikin LRLEQ5AY1 Manuel D'installation

[5A, 6A type]
6
5
1
2
3
4
9
[8A, 10A, 12A type]
6
5
14
10
1
2
3
4
9
[15A, 20A type]
16
17
18
1
2
3
15
4
9
1 Conduit
2 Perform wiring carefully so that the wiring will not come in contact
with the port
3 When routing high-voltage wiring (power supply wiring, earth
wires, and warning/alarm/operation output wiring) from the left
side
4 Connecting local piping
5 Power supply terminal block (X1M)
6 X2M terminal block for warning, alarm, and operation output
7 Earth terminal block
8 When routing high-voltage wiring (power supply wiring, earth
wires, and warning/alarm/operation output wiring) from the right
side
9 When routing high-voltage wiring (power supply wiring, earth
wires, and warning/alarm/operation output wiring) from the front
10 Fixed to the stay with the provided clamp (3)
11 Remote operating switch terminal block (X3M)
12 When routing remote operating switch wiring through a wiring
opening
13 Separate by at least 50 mm
14 Stay
English
7
11
8
19
12
13
7
11
8
19
12
13
6
5
7
11
8
19
13
12
15 Perform wiring carefully so that the sound insulation of the com-
pressor will not come off
16 Support
17 Fixed to the rear side of the support with the provided clamp (1)
18 Fixed with the provided clamp (3)
19 Fixed to the rear side of the support with the provided clamp (2)
CAUTION
On completion of electrical work, check that there are no disconnected
connectors or terminals of any electrical parts in the control box.
8.

INSPECTION AND PIPE INSULATION

For piping work contractor, electrical work contractor,
and trial run workers
• Never open the shutoff valve until the insulation measurement of
the main power supply circuit is finished. The measured insulation
value will become lower if the measurement is made with the
shutoff valve opened.
• On completion of inspection and refrigerant charging, open the
shutoff valve. The compressor will malfunction if the condensing
unit is operated with the shutoff valve closed.

8-1 Airtight Test/Vacuum Drying

Refrigerant is enclosed in the unit.
Be sure to keep both liquid and gas shutoff valves
closed at the time of an airtight test or vacuum drying
of the local piping.
[For piping work contractor]
On completion of piping work, make the following inspection pre-
cisely.
• To ensure that the condensing unit withstand pressure properly
and prevent the penetration of foreign substances, be sure to use
R410A-dedicated tools.
• To ensure that the condensing unit with-
stand pressure properly and prevent the
penetration of foreign substances (water,
Gauge manifold
dirt, and dust), use an R410A-dedicated
Charge hose
gage manifold and charge hose. R410A-
dedicated tools and R407C-dedicated tools
are different in screw specification.
• Pay the utmost attention so that the pump
oil will not flow backward into the system
Vacuum pump while the pump is not in operation.
• Use a vacuum pump that can vacuum
down to –100.7kPa (5 Torr or –755mmHg).
Gas for airtight
• Nitrogen gas
test use
• Airtight
Pressurize the high-pressure section of the system (liquid piping)
to 3.8 MPa (38 bar) and the low-pressure section of the system
(gas piping) to the design pressure (*1) of the indoor unit (field
supply) from the service port (*2) (do not exceed the design pres-
sure). The system is considered to have passed if there is no
decrease in the pressure over a period of 24 hours.
If there is a decrease in the pressure, check for and repair leaks.
• Vacuum drying
Connect a vacuum pump to the service ports (*) of both the liquid
and gas pipes for at least 2 hours and vacuum the unit down to
–100.7 kPa or below. Then leave the unit for at least 1 hour at a
pressure of –100.7 kPa or below and check that the vacuum gage
reading will not rise. If the pressure rises, there is residual water in
the system or the system has leakage.
*1 Contact the manufacturer in advance for more information about
the design pressure of the indoor unit (field supply).
13