Pipe connections
10
How to connect the copper pipes
Piping Connecton
Attention :
When connectiong the pipe, a suitable pitching spanner must be used. If other spanner is used, it may
damage the joint due to inappropriate force.
4. Connect the electric cable as per circuit diagram, and bundle
it with the connecting pipe.
1. Open the cover of the outdoor unit.
2. Connect the pipe to the indoor unit and outdoor unit.
Align the centre of the pipe and fully screw in the angular nuts with Finger.
On connecting the pipe, one should ensure that the insulating material of the pipe be closely fitted to
the nuts at the joint.
On connecting to the external unit, the pipe should be wrapped with sponge padding to prevent
rain water from flowing in.
When bending the pipe, the radius cannot be too small and be about 150~160 mm.
connecting pipe
thick pipe
end nut
Connector
low pressure valve
high pressure valve
thin pipe
3. Use Vacuum pump to remove the air from indoor unit and
connection pipe.
Wipe the quick connectors with clean cloth to prohibit dust and impurity entering the pipes.
5. Take off the nuts in the mouths of high valve and low valve, turn
the valves core anticlockwise with hexagon panner till the valves
are opened completely. Recover and tighten the nuts.
6. Check leakage: check if there is leakage at each connection of the
pipes or nuts. If yes, remedial neasure must be taken, leakage is
not permitted in any case.
