Panasonic WH-SHF09D3E5, Service Manual

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11.4.3 Evacuation of the Equipment
WHEN INSTALLING AN AIR-TO-WATER HEATPUMP, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR
UNIT AND PIPES in the following procedure.
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
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Be sure to connect the end of the charging hose with the push pin to the service port.
2 Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and
vacuum pump adaptor.
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0cmHg (0 MPa) to –76cmHg (–0.1 MPa). Then evacuate the air approximately ten minutes.
4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5 Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6 Tighten the service port caps of the 3-way valve at a torque of 18N•m with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4mm).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
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Be sure to check for gas leakage.
CAUTION
Do not add or replace other than R407C type. It may cause product damage, burst, injury and etc. Use compatible
R410A tools for refrigerant piping work and refrigerant charging during installation or servicing.
CAUTION
If gauge needle does not move from 0cmHg (0MPa) to –76cmHg (–0.1MPa), in step above take the following measure:
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If the leak stops when the piping connections are tightened further, continue working from step .
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If the leak does not stop when the connections are retightened, repair the location of leak.
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Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant,
it may cause frostbite.
11.4.4 Connect the Cable to the Outdoor Unit
(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)
1 Remove the control board cover from the unit by loosening the screw.
2 Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed
4 x (4.0 or 6.0 mm
2
) flexible cord, type designation 60245 IEC 57 or heavier cord.
3 Secure the cable onto the control board with the holder (clamper).