Johnson SUIT Serie Manual De Instrucciones página 49

6-1 Inspection and confirmation before debugging
1) Check and make sure the refrigerating pipeline and communication line between the indoor and
outdoor units are in the same refrigerating system, or some operation fault may occur.
2) The voltage power supply is within ±10% of the rated voltage.
3) Check and make sure the power supply line and control line are correctly connected.
4) Make sure there is not short circuit before the system is electrified.
5) Make sure all units have passed the 24h nitrogen pressure maintaining test (40kgf/cm²).
6) Make sure the system is fully vacuumized, dried and filled with the refrigerant as per the
specification.
6-2 Preparation before debugging
1) Calculate the amount of refrigerant to be refilled as per the field liquid pipe length.
2) Prepare the required refrigerant.
3) Prepare the system planar drawing, system pipeline drawing and control line drawing.
4) Record the well set address codes on the system planar drawing.
5) Turn on the outdoor unit power supply switch in advance, and make sure it is connected for more
than 12h to make the heater heating the compressor oil.
6) Fully open the outdoor unit gas pipe check valve, liquid pipe check valve and oil balance valve, or the
machine may be damaged.
7) Check if the phase sequence of the outdoor unit power supply is correct.
8) Check if all dialing switches of the outdoor and indoor units are
set as per the product technical requirement.
6-3 Name filling of connected systems
When setting several indoor units, each connecting system of the indoor
unit and outdoor units shall be identified and named and recorded on the
nameplate of outdoor unit electrical control box cover
6-4 Precautions against refrigerant leakage
1) The refrigerant itself of this air conditioner is harmless, nonflammable and safe.
2) The air conditioner room shall be of a suitable space size so that the refrigerant concentration will not
go beyond the limit even if leakage happens, and some necessary measures can be taken additionally.
3) The critical gas concentration harmless for the human body is 0.3kg/m³.
4) Confirm the critical concentration as per the following steps and take necessary measures
correspondingly.
a) Calculate the full volume of refrigerant to be filled (A[kg])
Full refrigerant volume = refrigerant volume at delivery (see the nameplate) + refrigerant volume to be
refilled for the corresponding pipe length
b) Calculate the indoor cubage (B[m³]) (as per the minimum cubage)
c) Calculate the refrigerant concentration
6.Trial running
22
Indoor unit type
室内 机 机 型
Room name
室名
e.x.:1st system room
例:2楼第一系统室内(A)
on floor 2
记为:-2F-1A
recorded as: -2F-1A
Fig. 6.1
V.1