Copa Multi Naya 12, User Manual

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67
USER'S MANUAL
lnstallation of drainage pipe
Expelling the air in the pipes and the indoor unit
Warning: In order to ensure the drainage water come aut successfully, the unit must be
declined to the bottom side of unilwhen finished installation
1-
The drainage pipe must be wraped by thermal
insulations to properly insulated to prevent the
generation of freezing.
2-
The pipe should be installed with a downward
gradient(>1/1.36)to allow the water to drain away.
3-
The pipe should not rise at any point.
Exclusive R32 refrigerant pump must be used in making R32 refrigerant vacuum.
1-
Connect the pipes of indoor units and outdoor unit according to the fıgure below,
and tighten all the beli coupling nuts of indoor and outdoorto prevent leakage.
2-
Connect the cut-off valves, charge hose, manifold valve, vacuum pump as the
figure below.
3-
Please fully open the manifoldvalve handlelo and Hi, and do the vacuum
processing, vacuum should be running more than 15 minutes, make sure the
vacuum gauge indicates the pressure has reached -0.1 MPa (-76cmHg);
4-
After completion of vacuum processing, use the hex wrench to open a little the liquid
valve of unit A and unit B, and then quickly remove the hose of gas valve (remove the
hose to prevent air from entering the system);
5-
Open all the cut-off valve and check the connecting mouth of indoor and outdoor,
then cover the cut-off valves after confirm there is no leak.