17
Installation manual
Fig.5-6
Connect with vacuum pump
Run the pump (2 hrs or more)
When get the vacuum level
-0.1MPa, keep the pump
running for 20-60 mins
Shut down the
vacuum pump
Place in vacuum state (for 1 hour or more)
1. Close the valve in the
vacuum meter.
2. Cut the connection
between the pressure
meter and vacuum pump.
3. Close the vacuum
pump.
√
Correct
Fig.5-7
5.12 Key installation points for connective
pipes between outdoor units
Connect the pipes between outdoor units horizontally
(Fig.5-7 and Fig.5-8). Avoid a concave shape at the junction
site (see Fig.5-9).
No pipes connecting the outdoor units can exceed the height
of the pipe outlets (see Fig.5-10).
1)
2)
CAUTION
5.11 Refrigerant amount to be added
Calculate the refrigerant to be added based on the diameter
and length of the liquid-side pipe for the outdoor/indoor unit
connection. The refrigerant is R410A.
Pipe size on
liquid side
Refrigerant to
be added per meter
Φ
6.4
Φ
9.5
Φ
12.7
Φ
15.9
Φ
19.1
Φ
22.2
Φ
25.4
Φ
28.6
0.022kg
0.057kg
0.110kg
0.170kg
0.260kg
0.360kg
0.520kg
0.680kg
Table.5-10
Mixed use of different refrigerants or tools and measurement
instruments that are in direct contact with the refrigerants is not
allowed.
Do not use refrigerant gas for creating a vacuum.
If the vacuum level cannot reach -0.1M Pa, check if there’s a leak.
If not, run the vacuum pump again for 1-2 hrs.
√
Correct
× Incorrect
Fig.5-9
Fig.5-8
Fig.5-10
× Incorrect
Содержание Xpower Series
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