Rooftop Installation; Refrigerant Pipe Connection - Chigo CSG-07HVR1-A Technical Manual

R410A DC Inverter Multi-split Technical Manual

2. Rooftop installation


If the outdoor unit is installed on a roof structure, be sure to level the unit.

Ensure the roof structure and anchoring method are adequate for the unit location.

Consult local codes regarding rooftop mounting.

If the outdoor unit is installed on roof structures or external walls, this may result in excessive noise and
vibration, and may also be classed as a non serviceable installation.

3. REFRIGERANT PIPE CONNECTION

3.1 Flaring work

Main cause for refrigerant leakage is due to defect in the flaring work.
Carry out correct flaring work using the following procedure:
 Cut the pipes and the cable
1. Use the piping kit accessory or pipes purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than the measured distance.
4. Cut the cable 1.5m longer than the pipe length.
 Burr removal
1. Completely remove all burrs from the cut cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping
burrs into the tubing.
 Putting nut on
Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr
removal.(not possible to put them on after flaring work).
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