1. Never turn screws too tightly, or else the cover would be dented or the Liquid Crystal breaks.
2. Please leave sufficient space for maintenance and service of wired controller.
CAUTION
Communication wiring between the indoor and outdoor units
The HRV and outdoor units communicate via the RS485 serial port.
The communication wiring between the HRV and outdoor units should be connected one unit after
another in a daisy chain from the outdoor unit to the final HRV unit. And the shielded layer must be
properly grounded, and a build-out resistor must be added to the last HRV unit to enhance the stability
of the communication system.
Incorrect wiring such as a star connection or a closed ring will cause instability of the communication
system and system control anomalies.
Use a three core shielded wire (greater than or equal to 0.75 mm2) for the communication wiring
between the indoor and outdoor units. Make sure the wiring is connected correctly. The connecting lead
for this communication wire must come from the master outdoor unit.
All shielded wiring in the network are interconnected, and will eventually connect to earth at the same
point " ”.
3. Wired controller should be purchased separately.
4. Please follow the installation and owner’s manual of wired controller.
Communication wiring between the indoor unit and wired controller
The wired controller and the indoor unit can be connected in different manners, depending on the forms of
communication.
1. For a bidirectional communication mode:
Use 1 wired controller to control 1 indoor unit or 2 wired controllers (one master and one slave
controller) to control 1 indoor unit.(see Fig.4-4)
Use 1 wired controller to control multiple indoor units or 2 wired controllers (one master and one slave
controller) to control multiple indoor units. The maximum number of connections is 16.(see Fig.4-5)
2. For single direction communication mode:
Use 1 wired controller to control 1 indoor unit
The X1/X2, D1/D2 ports on the sides of the main control board and single direction communication port
are for different types of wired controllers.
For the specific connection method, refer to the instructions in the corresponding wired controller
manual to carry out the wiring and connections.
Handling the Electrical Wiring Connection Points
Once the wiring and connections are done, use tie straps to secure the wiring properly so that the
connection joint cannot be pulled apart by external force. The connection wiring must be straight out so
that the cover of the electrical box is level and can be closed tightly.
Use professional insulation and sealing materials to seal and protect the perforated wires. Poor sealing
may lead to condensation, and entry of small animals and insects that may cause short circuits in parts
of the electrical system, causing the system to fail.
• If this unit is used in the same room as a cooker, stove, hob, or
burner, ventilation for sufficient fresh air must be ensured,
otherwise the oxygen concentration will fall, which may cause
injury.
• Dispose of this unit’s packaging carefully, so children cann’t play
with it. Packaging, especially plastic packaging, can be
dangerous, can cause serious injury or death. Screws, staples
and other metal packaging components can be sharp and should
be disposed of carefully to avoid injury.
• Dispose of this unit’s packaging carefully, so children cann’t play
with it. Packaging, especially plastic packaging, can be
dangerous, can cause serious injury or death. Screws, staples
and other metal packaging components can be sharp and should
be disposed of carefully to avoid injury.
• Do not attempt to inspect or repair this unit yourself. This unit
should only be serviced and maintained by a professional air
conditioning service engineer. Incorrect servicing or maintenance
can cause electric shocks, fire or water leaks.
• This unit should only be re-positioned or re-installed by a
professional technician. Incorrect installation can lead to electric
shocks, fire or water leaks. The installation and grounding of
electrical appliances should only be carried out by licensed
professionals. Ask your supplier or installation engineer for further
information.
• Do not allow this unit or its remote controller to come into contact
with water, as this can lead to electric shocks or fire.
• Turn off the unit before cleaning it to avoid electric shocks.
Otherwise, an electric shock and injury may result.
• To avoid electric shocks and fires, install an earth
leakage
detector.
• Do not use paint, varnish, hair spray, other flammable sprays or
other liquids that may give off flammable fumes/vapor near this
unit, as doing so can cause fires.
• When replacing a fuse, ensure that the new fuse to be installed
completely complies with requirements.
• Do not open or remove the unit's panel when the unit is powered
on. Touching the unit's internal components while the unit is
powered on can lead to electric shocks or injuries caused by
moving parts such as the unit's fan.
• Ensure that the power supply is disconnected before any servicing
or maintenance is carried out.
• Do not touch the unit or its remote controller with wet hands, as
doing so can lead to electric shocks.
• Do not allow children to play near this unit, as doing so risks injury.
• Do not insert your fingers or other objects into the unit’s air inlet or
air outlet to avoid injury or damage to the equipment.
• Do not spray any liquids onto the unit or allow any liquids to drip
onto the unit.
• Do not place vases or other liquid containers on the unit or in
places where liquid could drip onto it. Water or other liquids that
come into contact with the unit can lead to electric shocks or fires.
• Do not remove the remote controller’s front or back overs and do
not touch the remote controller’s internal components, as doing so
can cause injury. If the remote controller stops working, contact
your supplier or service engineer.
• Ensure that the unit is properly grounded, otherwise electric
shocks or a fire may result. Electrical surges (such as those that
can be caused by lightning) can damage electrical equipment.
Ensure
that suitable surge protectors and circuit breakers are
properly installed, otherwise electric shocks or a fire may result.
• Dispose of this unit properly and in accordance with regulations. If
electrical appliances are disposed of in landfills or dumps,
hazardous substances can leak into the groundwater and thus
enter the food chain.
• Do not use the unit until the qualified technician instructs you that
it is safe to do so.
• Do not place appliances that produce naked flames in the path of
the airflow from the unit. The airflow from the unit may increase the
rate of combustion, which may cause a fire and cause serious
injury or death. Alternatively, the airflow may cause incomplete
combustion which can lead to reduced oxygen concentration in
the room, which can cause serious injury or death.
Caution
• Only use the air conditioner for its intended purpose. This unit
should not be used to provide refrigeration or cooling for food,
plants, animals, machinery, equipment or art.
• Do not insert your fingers or other objects into the unit’s air inlet or
air outlet to avoid injury or damage to the equipment.
• The fins on the unit’s heat exchanger are sharp and can cause
injury if touched. To prevent injury, when the unit is being serviced,
gloves should be worn or the heat exchanger should be covered.
• Do not place items which might be damaged by moisture under
the unit. When the humidity is greater than 80% or if the drain pipe
is blocked or the air filter is dirty, water could drip from the unit and
damage objects placed under the unit.
• Ensure that the drain pipe functions properly. If the drain pipe is
blocked by dirt or dust, water leaks may occur when the unit is
running in cooling mode. If this happens, turn the unit off and
contact your supplier or service engineer.
• Do not touch the internal parts of the controller. Do not remove the
front panel. Some internal parts may cause injury or be damaged.
• Ensure that children, plants and animals are not directly exposed
to the airflow from the unit.
• When fumigating a room with insecticide or other chemicals, cover
the unit well and do not run it. Failure to observe this caution could
lead to chemicals getting deposited inside the unit and later
emitted from the unit when it running, endangering the health of
any room occupants.
• Do not dispose of this product
as unsorted waste. It must be
separately collected and processed. Ensure that all applicable
legislation regarding the disposal of refrigerant, oil and other
materials is adhered to. Contact your local waste disposal authorty
for information about disposal procedures.
• To avoid damaging the remote controller, exercise caution when
using it and replacing its batteries. Do not place objects on top of it.
• Do not place appliances that have naked flames under or near
the unit, as heat from the appliance can damage the unit.
• Do not place the unit’s remote controller in direct sunlight. Direct
sunlight can damage the remote controller’s display.
• Do not use strong chemical cleaners to clean the unit, as doing so
can damage the unit’s display or other surfaces. If the unit is dirty
or dusty, use a slightly damp cloth with very diluted and mild
detergent to wipe the unit. Then, dry it with a dry cloth.
• Children shall not play with the appliance.
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