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6. Electrical Writing
Turn off the main power switch of indoor unit and
outdoor unit and wait for more than 3 minutes before
electrical wiring work or periodic check.
Check to ensure that the indoor fan and the outdoor fan
have stopped before electrical wires work or periodic
check.
Protect the wires, electrical parts, etc. from rats or other
small animals. If they are not protected, rats may gnaw
at the unprotected parts and may lead to fire.
Avoid the wires from touching the refrigerant pipes, steel
plate edges and electrical parts. Otherwise, the wires
will be damaged and may lead to fire.
Use a medium sensing speed type ELB(Electric Leakage
Breaker, activation speed of 0.1 sec. or less). If not used,
it will cause electric shock or fire.
Tighten screws according to the following torque.
G Tightly secure the power source wiring
using the cord clamp inside the unit.
Use the adhesive rubber tube to fix the connecting
wires when the wires are not connecting to the
outdoor unit.
6.1 General Check
(1) Make sure that the field-selected electrical components
(main power switches, circuit breakers, wires, conduit
connectors and wire terminals) have been properly
selected according to the Technical Catalog I. Make
sure that the components comply with the National
Electrical Code.
Connect a power supply wiring to each outdoor unit.
Connect an ELB, fuse and main switch (S) to each
outdoor unit.
Connect a power supply wiring to each indoor unit
to be connected to the same outdoor unit.
(Max. capacity of one indoor unit group is 70 KBtu/h.)
Connect an ELB, fuse and main switch (S) to each
indoor unit group.
(2) Check to ensure that the power supply voltage is
within
10% of the rated voltage.
(3) Check the capacity of the electrical wires. The system
cannot be started due to the voltage drop, if the power
source capacity is too low.
(4) Check to ensure that the earth wire is connected.
NOTE
Pump Switch Signal Output
Communication wire between
the outdoor and indoor unit.
DC 5V(Non-Pole)
Electrical Box
Fig.6.1 Wiring Connection for Outdoor Unit
Power Source Wiring
(AC220V/50Hz)
Flow Switch Signal input
Ground Terminal
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