14
1.
Valve Protection Plug
2.
Insert Allen Wrench to open/close the
Refrigerant Valve
3.
Valve Protection Cap
4.
Refrigerant Valve
5.
Service Port Cap
6.
Flare Nut
7.
Unit Back Side
8.
Copper Tube
Figure 17. Three-way Refrigeration Valve
7. DRAIN LINE INSTALLATION
a. It is recommended to prepare a drainage point
with rigid PVC Ø 32 mm tube by a professional
technician.
b. The drain hose must be installed with a constant
minimum down slope of 2% and equipped with a
trap to prevent air suction into the unit (See
Figure 18).
c. Use a transparent Ø
mm hose or equivalent.
d. To check the system, fill the condense tray with
water and verify its free flow through the drain
line.
Verify also absence of any water leakage
underneath the unit.
8. ELECTRICAL CONNECTIONS
8.1 Power Supply
WARNING
Electrical connection shall be made only by authorized electricians and in accordance with local
electrical requirements and codes. The system must be grounded.
Single phase models and three phase models are available; for each of them, the necessary
wiring diagram is shown. Connect the unit to the main power supply as for its applicable wiring
diagram.
Use supply wire sizes as per local electrical codes and regulations
Connect drainage siphon (optional) to unit, as
described in figure. The siphon should be inserted
to the indoor unit drainage port until it stops. Do
not apply “
excessive force
”.
Figure 18. Drainage siphon (optional)
16
