Electrical Wiring - Delta 21UT024C24 Instruction Manual

Floor Ceiling Air-Conditioning Unit
4.6.4 Testing of Drain Piping
(1) After piping work is finished, check if drainage flows smoothly.
(2) As shown in the figure, pour water into the drain pan from the right side to check that water
flows smoothly from the drain hose.

4.7 Electrical Wiring

Wiring Precautions
4.7.1
Before obtaining access to terminals, all supply circuits must be disconnected.
① .
The rated voltage of the unit is as shown as Table 4 and Table 5
② .
Before turning on, verify that the voltage is within the 198~264V range(for single phrase
③ .
unit) .
Always use a special branch circuit and install a special receptacle to supply power to the
④ .
air conditioner.
Use a special branch circuit breaker and receptacle matched to the capacity of the air
⑤ .
conditioner.
The special branch circuit breaker is installed in the permanent wiring. Always use a circuit
⑥ .
that can trip all the poles of the wiring and has an isolation distance of at least 3 mm
between the contacts of each pole.
Perform wiring work in accordance with standards so that the air conditioner can be
⑦ .
operated safely and positively.
Install a leakage special branch circuit breaker in accordance with the related laws and
⑧ .
regulations and electric company standards.
The power source capacity must be the sum of the air conditioner current and the current
① .
of other electrical appliances. When the current contracted capacity is insufficient, change
the contracted capacity.
When the voltage is low and the air conditioner is difficult to start, contact the power
② .
company to raise the voltage.
Ceiling type
Fig.25
WARNING !
CAUTION !
18
Floor type
Fig.26