Innova 3in1 5M Installer Manual page 27

Connection of piping
Preliminary warnings
Fasten a cable raceway to the wall (possibly with internal
partitioning) of suitable size for the pipes and electrical
wires to pass through.
The refrigeration fittings, equipped with shut-off valves,
are ready for flared fittings.
Cut the sections of pipe leaving an extra 3-4 cm on the
ends.
Immediately after cutting and deburring the pipes, seal
the ends with insulating tape.
Remove possible burrs with the special tool.
Use a wheel pipe cutter only to cut the pipes clamping it
in short lengths so as not to crush the pipe.
NEVER USE A NORMAL HANDSAW, scraps could fall
inside the pipe and ente the circuitry of the system,
damaging the parts severely.
Avoid introducing non-condensable gases (air) into the
circuit. Otherwise, high pressures could be generated dur-
ing operation with the risk of breakage.
Connection
Before connecting:
– insert the fixing nut into the pipe
OK
OK
OK
– flare the pipe ends using the special tool
– Lubricate the connecting thread with oil for coolant
Do not use any other type of lubricant.
The flared fitting must be free of cracks, crazing or flaking.
Avoid using refrigerant oil on the outside of the counter-
sink.
To connect:
– positioning the refrigeration lines
– screw the pipe nut manually on the connecting thread
– hold the threaded part of the fitting still with a spanner
– use a torque wrench on the nut to tighten it definitively
Keep the leak detector switched on near the unit to signal
any refrigerant leaks while connecting.
Pipeline Ø
mm
6,35
9,52
12,70
15,88
For the next operations refer to the manual of the
paired outdoor unit.
INSTALLATION
Tightening torque
inches Nm
1/4 18
3/8 42
1/2 55
5/8 60
27