Notices - BGH GMV6 Technical Sales Manual

Adding quantity B of refrigerant of each module=0kg.
Assuming the adding quantity A of piping refrigerant=Liquid pipe length×adding quantity of liquid pipe
refrigerant in each meter=5kg.
Total adding quantity R of system refrigerant=5+0=5kg.
Actual module combination of ODU shall subject to current developed combination.
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NOTICES

12.1 Safety notices
(1) The unit should not be installed in places with high pH, high voltage fluctuations, vehicles and ships.
(2) Do not touch the fins of the heat exchanger. Improper touch can cause damage.
(3) Do not mix other substance apart from refrigerant in the refrigerant circuit during installing or moving
the unit, and do not leave any air in the pipe. If air or other substances are mixed, the system pressure
will rise, the compressor will burst and damage will occur.
(4) Don't seal the non-specified refrigerant when installing or moving the unit, otherwise, it might cause
poor operation, malfunction, mechanical breakdown, etc, or even cause major safety accidient.
(5) When moving the unit or repairing the recycled refrigerant, be sure to use the pressure gauge.
Conduct the cooling operation first, then completely shut down the valve (liquid valve) at high pressure
side. When the pressure gauge display 0 ～ 0.05MPa, completely shut down the valve (gas valve) at
low pressure side and immediately stop running and cut off the power.
(6) When recovering the refrigerant, please make sure to completely shut down the liquid valve and
gas valve, and cut off the power before dismantling the connection pipe; otherwise, there will be air
intrusion, resulting in pressure rise of the system, if the compressor is burst, it will cause damages.
(7) When installing the unit, make sure that the connection pipe is securely connected before starting the
compressor. If the compressor is started before the connection pipe is connected and when the cut off
valve is started, there will be air intrusion, resulting in pressure rise of the system, if the compressor is
burst, it will cause damages.
(8) Wiring between indoor and outdoor units must be correctly connected with the specified wires, and
the wiring terminal shall not be affected by external forces. Poor connection or fixing might cause fire
accident.
(9) No connection is allowed in the middle of the wire. When the length of the connecting wire is not
enough, please contact the designated service store to re-equip a dedicated wire of sufficient length.
12.2 Notices on using refrigerant
(1) AC project designers and installers shall obey the local laws and regulations on the safety requirement
of the usage and leakage of refrigerant.
(2) The multi VRF unit adopts R410A refrigerant. When installing in the space with people, the refrigerant
amount shall not exceed the max.allowable concentration. Otherwise, suffocation will occur. For
example, the max.allowable concentration for refrigerant of European safety standard and regulation
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is 0.44kg/m .
(3) Max. refrigerant charge(kg)= Room volume(m
(4) Refrigerant charge(kg)= Adding quantity of refrigerant(kg)+ ∑ex-factory charge of ODU(kg)
(5) Refrigerant charge ≤ Max. refrigerant charge
(6) When refrigerant charge has exceeded the max.refrigerant charge, re-design the refrigeration
system and divide the refrigeration system to several refrigeration systems of small volume, or add
corresponding ventilation measures and alarms.
GMV6 DC Inverter VRF Units
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)× max. allowable concentration(kg/m
Technical Sales Guide
3
)
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