Install The Connection Pipe; External Water Pipe Connection Sketch; Motorized Valve - Panasonic PAW-FC Installation And Maintenance Manual

6.4 Install the connection pipe

- Align the centre of the piping flare with the relevant valve.
- Screw in the flare nut by hand and then tighten the nut with spanner and
torque wrench:
HEX NUT DIAMETER
6.00
9.52
12.00
16.00
19.00
Firstly connect the connection pipe to the unit, then to the outside unit; pay attention to the piping bends, do not damage the
connection pipe; Do not overtighten the nut joint, otherwise leakage may occur.

6.5 External water pipe connection sketch

1. Water inlet/outlet pipe Ø 12 mm
2. Connection nut provided by factory

6.6 Motorized valve

All units must be equipped with a motorized valve for the following main reasons:
1. Water flood risk for some units without motorized valves in the event that they stop under the cooling conditions.
2. Under the cooling and heating conditions, energy loss may happen to the chilled water and hot water.
Note:
- The pipe must be wrapped by heat insulation material to prevent condensing water drips.
- It is prohibited to bind directly the water valve wire and sponge up with the copper tube, as there is a probability of short
circuit or even electric leakage. The right way is letting the water valve wire go through the pipe sleeve and then binding
the sponge and pipe sleeve.
- It is prohibited to put the valve core upside down.
TIGHTENING TORQUE
15 – 20 Nm
31 – 35 Nm
50 – 55 Nm
60 – 65 Nm
70 – 75 Nm
1.
2.
3.
A.
B.
Indoor unit pipe
Connection nut
Pipe by Contractor
Spanner
Torque wrench
3. Connection pipe provided by contractor / installer
4. Two-way valve provide by contractor / installer
12