DC Inverter Multi VRF System
21
¼ inch: D+b+c+d = 16-1/2 + 10 + 6-1/2 + 3 = 36 feet
NOTICE!
Liquid pipe that is within 20m(65-5/8 feet)
doesn’t need to be added wit
h
refrigerant.
Therefore, the minimum quantity of additional refrigerant = (23-20)×0.054+11×0.022
˙
0.404kg(14oz)
4.6 Electric Wiring
(1) All electrical installation must be performed by qualified technicians in accordance with local and national
codes, regulations and this user manual.
(2) Use
dedicated
power supply and make sure that it is consistent with system’s rated voltage.
(3) Do not pull the power cord.
(4) Caliber of the power cord must be appropriate for voltage. A damaged power cord or connection wire must be
replaced by approved electrical cords.
(5) Connect the unit to dedicated grounding device and make sure it is secure. Install an air switch with suitable
capacity. Air switch should include magnet buckle and heating buckle function, it can protect the circuit-short
and overload. (Caution: please do not use the fuse only to protect the circuit).
(6) Air conditioner belongs to class I electrical appliance, so it must be securely grounded.
(7) The yellow-green wire inside the unit is a ground wire. Do not cut it off or secure it with tapping screws,
otherwise it will lead to electric shock.
(8) Power supply must include secure grounding terminal. Do not connect the ground wire to the following:
ķ
Water pipe;
ĸ
Gas pipe;
Ĺ
Drain pipe;
ĺ
Other places that are deemed as not secure by professional
electrician.
4.6.1 Electrical Wiring
(1).
For solid core wiring (Fig.24)
1
˅
Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation
about 25mm (1 inch).
2
˅
Using a screwdriver, remove the terminal screw(s) on the terminal board.
3
˅
Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
4
˅
Shape the loop wire properly, place it on the terminal board and tighten the
terminal screw using a screwdriver.
(2).
For strand wiring (Fig. 25)
1
˅
Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation
about 10mm (3/8inch) .
2
˅
Using a screwdriver, remove the terminal screw (s) on the terminal board.
3
˅
Using a round terminal fastener or pliers, securely clamp a round terminal to each
stripped wire end.
4
˅
Position the round terminal wire, and replace and tighten the terminal screw with a
screwdriver.(Fig. 26)
