Single Split
19
3. Piping connection of outdoor unit.
Connect the connecting pipe and inlet and outlet liquid pipe according to the piping
method.
When piping is longer than 5 m, charge additional refrigerant specified in this list.
Pipe length
Refrigerant charge (g)
5m 10m 15m 20m
750 1125375
4.Purging method
Discharge the air out of the indoor unit and the refrigerant pipe by vacuumizing
(1) Fasten all the nuts of the indoor and outdoor pipes to make these parts out of leakage.
(2) Under the condition of the complete close of the indoor and outdoor valve center
(both liquid and gas side),dismount the repair valve cap.Vacuumizing through the
charge mouth of the repair valve.
(3) After vacuumizing fasten the repair valve,and dismount the cap of the big and small
stop valve,then loosen the stop v
alve center completely and fasten the big and small
stop valve.
5.Extra charging amount of the refrigerant
25m
1500
30m
1875
Arrangement of drain hose
Drain hose shall be placed in under place.
There should be a slope when arrange drain hose. Avoid up and down waves in drain
hose.
If humidity is high, drain pipe( especially in room and indoor unit ) must be covered with
insulation material.
Indoor unit
Slope
Good
Up
Down
Bad
Installation procedures
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