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Safety
Fixing
The support of the outdoor unit shall be fixed onto the wall surface, and then the outdoor unit shall be fixed onto the
support horizontally. In case the outdoor unit is wall-mounted or roof-mounted, the support shall be firmly fixed, to avoid
the damage of strong wind.
Post-installation Inspection Items and Test Run
Post-installation Inspection Items
Items to Be Checked
Whether the installation is firm or not
Whether the inspection on air leakage is completed
Whether the unit is fully insulated
Whether the drainage is smooth or not
Whether the power voltage is identical to that marked on
the nameplate
Whether the circuit and pipeline are installed correctly
Whether the unit is safely earthed
Whether the type of wire is in line with relevant regulations
Whether barriers are identified at the air inlet/outlet of the
outdoor unit
Maintenance Instructions
Maintenance Precautions
Precautions
• For all the faults requiring welding the refrigeration pipelines or components inside the refrigeration system of R32
refrigerant heat pumps, maintenance at the user's site is never allowed.
• For the faults requiring radical disassembly and bending operation of the heat exchanger, such as the replacement of
the outdoor unit chassis and integral disassembly of the condenser, inspection and maintenance at the user's site are
never allowed.
• For the faults requiring replacement of the compressor or parts & components of refrigeration system, maintenance at
the user's site is not allowed.
• For other faults not involved in the refrigerant container, internal refrigeration pipelines and refrigeration elements, the
maintenance at the user's site is allowed, including the cleaning and dredging of the refrigeration system requiring no
disassembly of refrigeration elements and no welding.
• In case replacement of gas/liquid pipes is required during maintenance, the joint of evaporator gas/liquid pipes of the
indoor unit shall be cut off with a cutting knife. Connection is only allowed after re-flaring (the same to the outdoor unit).
Qualification Requirements of Maintenance Personnel
1. All the operators or the maintenance personnel involved in refrigerating circuits shall be provided with the effective
certificate issued by an industry-accepted assessment institute, to ensure that they are qualified for safety disposal of
refrigerant as required in the assessment regulations.
2. The equipment can only be maintained and repaired as per the method recommended by the manufacturer. In case
the assistance from personnel of other disciplines is required, the assistance shall be supervised by the personnel with
qualification certificate involved in flammable refrigerant.
Consequence of Improper Installation
The unit may fall, vibrate or make a noise
The refrigerating capacity (heating capacity) may be
insufficient
Condensation or drip may occur
Condensation or drip may occur
Failure may occur or the parts may be burned
Failure may occur or the parts may be burned
Electric leakage may occur
Failure may occur or the parts may be burned
The refrigerating capacity (heating capacity) may be
insufficient
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