DC Inverter U-match Series Cassette Type Unit
29
4.7 Electrical Wiring
4.7.1 Wiring Precautions
!
1
Before obtaining access to terminals, all supply circuits must be disconnected.
2
The rated voltage of the unit is as shown as Table 3.5 and Table 3.6.
3
Before turning on, verify that the voltage is within the 187~252V range (for single
phrase units).
4
Always use a special branch circuit and install a special receptacle to supply power
to the air conditioner.
5
Use a special branch circuit breaker and receptacle matched to the capacity of the
air conditioner.
6
The special branch circuit breaker is installed in the permanent wiring. Always use
a circuit that can trip all the poles of the wiring and has an isolation distance of at
least 3mm (1/8inch) between the contacts of each pole.
7
Perform wiring work in accordance with standards so that the air conditioner can
be operated safely and positively.
8
Install a leakage special branch circuit breaker in accordance with the related laws
and regulations and electric company standards.
!
1
The power source capacity must be the sum of the air conditioner current and the
current of other electrical appliances. When the current contracted capacity is
insufficient, change the contracted capacity.
2
When the voltage is low and the air conditioner is difficult to start, contact the
power company to raise the voltage.
4.7.2 Electrical Wiring
(1) For solid core wiring (Fig. 4.37)
1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the
insulation about 25mm (1inch).
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
securely with the terminal screw using a screwdriver.
(2) For strand wiring (Fig. 4.37)
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.
Summary of Contents for TU18H3O
Page 1: ......
Page 37: ...DC Inverter U match Series Cassette Type Unit 33 For the units 18k 42k Fig 4 43 ...
Page 47: ......
Page 48: ......