09
2.5 Refrigerant Sensor
R454B refrigerant leakage sensor is pre-configured on
the coil from the factory. It is located in the bottom right
corner of the coil to meet different installation scenarios.
To meet different installation scenarios, the refrigerant
sensor is located in the bottom right corner of the coil.
Before installing the indoor unit, check whether the
refrigerant sensor is correctly installed according to
Section 3.
CAUTION
The refrigerant leakage sensor can only use the
factory model or the specified model indicated in
the corresponding manual.
The R454B refrigerant leakage sensor must be
used to activate the refrigerant shut-off device,
the alarm device, incorporated circulation airflow
or other emergency controls, which shall give an
electrical signal at a predetermined alarm set
point in response to leaked refrigerant.
The location of leakage sensors shall be chosen
in relation to the different installation scenarios.
Please refer to the indoor unit installation
manual for specific requirements.
CAUTION
The refrigerant leakage sensor can only use the
factory model or the specified model indicated in
the corresponding manual.
The R454B refrigerant leakage sensor must be
used to activate the refrigerant shut-off device,
the alarm device, incorporated circulation airflow
or other emergency controls, which shall give an
electrical signal at a predetermined alarm set
point in response to leaked refrigerant.
The location of leakage sensors shall be chosen
in relation to the different installation scenarios.
Please refer to the indoor unit installation
manual for specific requirements.
The installation of the refrigerant leakage sensor
shall allow access for checking, repair or
replacement by an authorized person.
The refrigerant leakage sensor shall be installed
so its function can be verified easily.
The refrigerant leakage sensor shall be
protected to prevent tampering or unauthorized
resetting of the pre-set value.
To be effective, the refrigerant leakage sensor
must be electrically powered at all times after
installation, other than when servicing.
If the refrigerant leakage sensor detects a
refrigerant leak, several actions will occur: the
fan will be turned on to the maximum, and the
compressor will stop running,furnace heating will
cut off.In such a situation,it is crucial for your
safety that you immediately evacuate the area
where the leak occured.Afterward, it is
recommended to notify a professional to handle
the situation appropriately.
The service life of the refrigerant sensor is 15
years, and it should be replaced after the service
life.
WARNING
LEAK DETECTION SYSTEM installed on indoor
unit, unit must be powered except for service.
R454B refrigerant leakage sensor is configured
for the indoor unit, and the operation of fan can
be initiated by R454B refrigerant sensor, meeting
the incorporated circulation airflow requirements.
The allowed maximum refrigerant charge
(Mmax) and the required minimum room area
(Amin) can be determined according to Table 3-2
and Table 3-3.
NOTE
3.1 Replacement Parts
3.2 Pre-installation Instruction
3 INSTALLATION
Contact your distributor for authorized replacement
parts.
Carefully read all instructions for installation prior to
installation product. Make sure each step or procedure is
understood and any special considerations are taken into
account before starting installation. Assemble all tools,
hardware and supplies needed to complete the
installation. Some items may need to be purchased
locally.
Make sure everything needed to install the product is on
hand before starting.
Do not install unit in an area where flammable materials
are present due to the risk of an explosion resulting in
serious injury or death.
WARNING
These instructions are exclusively intended for
qualified contractors and authorized installers.
Work on the refrigerant circuit with flammable
refrigerant in safety group A2L may only be
carried out by authorized contractors. These
heating contractors must be trained in
accordance with UL 60335-2-40, Section HH.
The certificate of competence from an industry
accredited body is required.
Work on electrical equipment may only be
carried out by a qualified electrician.
Before initial commissioning, all safety – related
points must be checked by the particular certified
heating contractors. The system must be
commissioned by the system installer or a
qualified person authorized by the installer.
For installation of the indoor unit, refer to the
corresponding installation and operation manual.
If an indoor unit is installed in an unventilated
area, the area shall be so constructed that
should any refrigerant leak, it will not stagnate so
as to create a fire or explosion hazard.
The appliance shall be stored so as to prevent
mechanical damage from occurring.
Do not stack combustible materials on the
surface of the indoor unit.
WARNING
Ensure that apparatus is mounted securely.
WARNING
Assure that PARTIAL UNITS shall only be
connected to an appliance suitable for the same
refrigerant.
This unit is a PARTIAL UNIT AIR CONDITIONER,
complying with PARTIAL UNIT requirements of this
Standard, and must only be connected to other
units that have been confirmed as complying to
corresponding PARTIAL UNIT requirements of this
Standard, UL 60335-2-40/CSA C22.2 No.
60335-2-40, or UL 1995/CSA C22.2 No 236.
This unit is evaluated as a component of the
EVAPORATOR UNIT, and the EVAPORATOR
UNIT is a partial unit.
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