Daikin FDM24PEVLK Operation And Installation Instructions Manual page 36

9.8.2 Connection of the Refrigerant Pipe
1. Align the fl ared end of the copper pipe with the center of the thread joint. Manually tighten the fl ared end
nut.
2. Use torque spanner to tighten the fl ared end nut until the spanner clatters (Fig. 9.12).
Fitting Pipe for
Indoor Unit
Spanner
The following table describes the torques for tightening nuts of different pipe diameters.
3. The bending angle of the
bender when bending the
4. Use sponge to wrap the refrigerant pipe and joint without thermal insulation, and use plastic tape to
bundle the sponge.
5. Remove the caps of the liquid valve and the gas valve.
6. Use an inner hexagon spanner to loosen off the spool of the liquid valve for 1/4 circle. At the same time, use a
screwdriver to lift the spool. Then there is discharge of gas.
7. Refrigerant gas shall come out in 15 seconds. Then, close the one way valve
immediately and tighten the bonnet.
8. Fully open the spools of the liquid valve and the gas valve (refer to Fig. 9.13).
9. Tighten the caps of the valves. Then use soap water or leakage detector to check if there is leakage at the
position where the indoor unit or the outdoor unit is connected with
10. If possible, use a vacuum pump to release air out of the valve. Refer to Fig. 9.14.
34
Flaring
Fittng Pipe
Nuts
Torque Spanner
Fig. 9.12
Pipe Diameter
φ6.34mm
φ9.52mm
φ15.88mm
φ12.7mm
φ19.05mm
φ22.05mm
fitting pipe shall not be too small, otherwise the pipe may break. Please use a
fitting pipes.
Liquid Valve Gas Valve
Inner Hexagon Spanner
Screwdriver
Fig. 9.13
Tightening Torque
15-30 (N·m)
35-40 (N·m)
60-65 (N·m)
45-50 (N·m)
70-75 (N·m)
80-85 (N·m)
the refrigerant pipes.
One-Way
Valve
Valve Cap
Valve
Stem
English