GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
74
7.2 INSTALLATION OF THE POWER CABLE
7.2.1 Precautions
(1) The air conditioning unit is category 1 electrical appliance which requires reliable grounding.
Be sure to have authorized electrical engineers do the electric work using special circuits in
accordance with regulations and this installation manual. If power supply circuit has a lack
of capacity or electric work deficiency, it may cause an electric shock or fire.
(2) The grounding resistance must comply with local rules and regulations.
Be sure to correct the outdoor unit to earth. Do not connect earth line to any gas pipe, liquid
pipe, lightening rod or telephone earth line. If earth is incomplete, it may cause an electric
shock.
(3) The yellow green cable inside the air conditioning unit is a grounding cable. It cannot be used for
other purposes or be cut off. Do not fix it with tapping screws. Otherwise, an electric shock may be
caused.
(4) A reliable ground terminal must be provided for the power. Do not connect the grounding cable
to any of the following:
a). Water pipes b). Gas pipes c). Drainage pipe d). Other places deemed as unreliable
(5) The power cable and the communication cable must be laid separately with a distance of greater
than 200mm (7.87inch). Otherwise, the communication of the unit will be affection.
7.2.2 Requirements on Power Cable Configuration
Configure a circuit breaker to each unit for short circuit and overload protection. In addition,
configure a general circuit breaker to both the indoor and ODUs to switch on or switch off the general
power of the IDU or ODU.
(1) External Connection for Individual Units
Power cable and communication cable cannot come across and they should be at least 200mm
(7.87 inch) away from each other, otherwise, unit may work abnormally.
To Next Page
Loading...
Need help?
General