3 Installation
3.1 Notices
CAUTION
1. This unit must be installed only by authorized
qualified technicians according to local and/or
government regulations and in compliance with this
manual;
2. Warning: before obtaining access to terminals, all
supply circuits must be disconnected;
3. The temperature of refrigerant line will be high;
please keep the interconnection cable away from
the copper tube.
3.2 Installation Site
Proper installation site is vital for correct and efficient
operation of the unit. Avoid the following sites where:
• Strong heat sources, vapours, flammable gas or
volatile liquids are emitted;
• High-frequency electro-magnetic waves are gene-
rated by radio equipment, welders and medical
equipment;
• Salt-laden air prevails (such as close to coastal
areas);
• The air is contaminated with industrial vapours and
oils;
• The air contains sulphuric gases such as in hot
spring zones;
• Corrosion or poor air quality exists.
For the outdoor unit:
• Select a site where there is sufficient ventilation;
• Select a site where there is no obstructions
blocking the inlet and outlet;
• The site should be able to withstand the full weight
and vibration;
• Select a dry place, and do not expose the unit to
direct sunlight nor strong winds;
• Make sure that the outdoor unit is installed in
accordance with the installation instructions, and is
convenient for maintenance and repair;
• The maximum pipe height and lenght must comply
with unit specifications (table 1).
3.3 Safety Precautions for Electric
Appliances
1. A dedicated power supply circuit should be used in
accordance with local electrical safety regulations;
2. The unit should be reliably grounded and con-
nected to an exclusive ground device by the
professionals;
3. The circuit breaker must have the functions of
magnetic dripping and heat dripping to prevent
short circuit and overload;
4. The minimum distance between the unit and
combustive surface is 4,9 ft.(1.4935 m);
5. The appliance shall be installed in accordance with
national wiring regulations:
6. An all-pole disconnection switch with a contact
separation of at least 0.1 inch in all poles should
be connected in fixed wiring.
Grounding
1. Please ensure that the unit is reliably grounded;
2. The yellow-green wire in the outdoor unit is the
grounding wire which cannot be used for the other
purposes. Improper grounding may cause electric
shock;
3. The ground must have reliable terminal. Please do
not connect wire with the following: water pipe, gas
pipe, sewer pipe, or other place that professional
personnel consider is unreliable.
4. The model and rated values of fuses should accord
with the silk print on fuse cover or related PCB.
5
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