Instructions / Assembly

-17-
Exhaust
• Make sure that all the tubes of indoor and outdoor unit are connecting well.
• Take off valve bonnet from two-way and three-way valves by spanner; connect vacuum
pump and compound valve to the service valve bonnet.
• Open the low-pressure switch of compound valve, and run vacuum pump until units’
internal pressure at 10 mmHg.
• After pump vacuum, close the low-pressure switch of compound valve, and then close
vacuum pump. Turn anti-clockwise 90
。
Spool of narrow pipe service valve by hexagon
spanner, tightly with clockwise turning after stopping for 10 seconds.
• Check with soap water or leak detector whether there is leakage at all connections of
indoor and outdoor unit.
• Open wide and narrow pipe service valves by hexagon spanner for running.
• Take off the connection pipeline of wide pipe service valve.
• Screw tightly the entire valve bonnet by torque spanner.
• Check with soap water or leak detector whether there are leakage at all indoor and
outdoors’ connections.
• Put the valve bonnet and lid back to position.
Fig 15
Indoor Unit
Outdoor Unit
Manomete
Compoun
Vacuum Pump