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Ensure the air inlet and outlet are not blocked or performance
may suffer or it may activate protection, which will stop the
unit from running.
In extremely strong winds, please prevent the air from flowing
backwards into the outdoor unit.
Choose an appropriate place where the noise and hot or cold
wind blown out of the outdoor unit will not cause
inconvenience to your neighbors or affect the growth of an
animal or plant.
Do not place appliances that have naked flames under or
near the unit, as heat from the appliance can damage the
unit.
Do not allow children to play near this unit, as doing so risks
injury.
This unit should not be operated by children or by adults that
are not capable of operating the unit safely.
When disposing of this unit, ensure that all applicable
legislation regarding the disposal of refrigerant, oil and other
materials is adhered to.
Leave the power on for a minimum of 12 hours prior to
running the system to ensure that the crankcase heaters
have heated the compressor oil sufficiently.
2. PARTS NAMES
3. OPERATION AND PERFORMANCE
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NOTE
All pictures in this manual are for explanation purposes only.
They may be slightly different from the air conditioner you
purchased (depend on model).
The cooling and heating operation in a VRF system
Each indoor unit can be controlled alone. The indoor units in the
same system cannot run cooling and heating at the same time.
Explanation of priority mode operation
Fig.2-1
Air inlets (left, right, rear and front ( 24-32HP )
Refrigerant piping and wiring connection port
Fixed foot
Air outlet
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Priority mode can only be set on the master unit. When an indoor
unit is in mode conflict with the outdoor units the unit displays the
mode conflict error.
1.
Auto priority mode (default):
In auto priority mode, the
outdoor unit will operate in heating priority mode or cooling
priority mode according to the outdoor ambient temperature.
2.
Heating priority mode:
a)
During cooling operation:
If an indoor unit requests
heating, the outdoor units stop and then restart in
heating mode after 7 minutes. Indoor units requesting
heating then start in heating mode and indoor units
requesting cooling display the mode conflict error.
b)
During heating operat ion:
If an indoor unit requests
cooling, the outdoor units ignore the request and
continue to run in heating mode. The indoor unit
requesting cooling displays the mode conflict error. If all
the indoor units requesting heating are later turned off
and one or more indoor units are still requesting cooling,
the outdoor units restart in cooling mode after 7 minutes
and any indoor units requesting cooling then start in
cooling mode.
3.
Cooling priority mode:
a)
During heating operation:
If an indoor unit requests
cooling, the outdoor units stop and then restart in
cooling mode after 7 minutes. Indoor units requesting
cooling then start in cooling mode and indoor units
requesting heating display the mode conflict error.
b)
During cooling operation:
If an indoor unit requests
heating, the outdoor units ignore the request and
continue to run in cooling mode. The indoor unit
requesting heating displays the mode conflict error. If all
the indoor units requesting cooling are later turned off
and one or more indoor units are still requesting heating,
the outdoor units restart in heating mode after 7 minutes
and any indoor units requesting heating then start in
heating mode.
4.
VIP priority mode or voting priority mode :
63 is the VIP
address. If the VIP indoor unit is operating, the outdoor units
operate in the mode of the VIP indoor unit. Indoor units that
are in a mode different to that of the VIP unit display the mode
conflict error. If there is no unit with address 63 or the unit at
address 63 is in standby, the outdoor units operate in voting
priority mode. In voting priority mode, the outdoor units
operate in whichever of heating and cooling modes is being
requested by the larger number of indoor units.
5.
Heating only mode :
The outdoor units only operate in
heating mode. Indoor units requesting heating operate in
heating mode. Indoor units requesting cooling or in fan only
mode display the mode conflict error.
6.
Cooling only mode:
The outdoor units only operate in
cooling mode. Indoor units requesting cooling operate in
cooling mode; indoor units in fan only mode operate in fan
only mode. Indoor units requesting heating display the mode
conflict error.
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