Panasonic U-120ME2U9, Руководство по установке

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1-9. System Limitations
Table 1-11 System Limitations
Max. No. allowable connected outdoor units 3
*2
Max. capacity allowable connected outdoor
units
360,000 BTU/h
(30 ton, 105.5 kW)
Max. connectable indoor units 64
*1
Max. allowable indoor/outdoor capacity ratio 50 – 200 %
*3
*1: In the case of 18 ton (63.3kW) or smaller units, the number is
limited by the total capacity of the connected indoor units.
*2: Up to 3 units can be connected if the system has been extended.
*3: It is strongly recommended that you choose the unit so the load
can become between 50 and 130%.
Table 1-12 System Limitations of Total Refrigerant Amount
Combination number of outdoor unit 1 2 3
Upper limit oz (
g
) 1,763 (50,000) 2,821 (80,000) 3,703 (105,000)
Make sure the values calculated using the following formula should not exceed the maximum allowable values (Table 1-12).
Total refrigerant amount = Refrigerant charge amount at shipment (for outdoor unit)
+ Necessary amount of additional refrigerant charge per ft. (or per meter) according to liquid tubing size
+ Necessary amount of additional refrigerant charge per outdoor unit
+ Necessary amount of additional refrigerant charge for all indoor unit cooling capacity
WARNING
CAUTION
Always check the gas density limit for the room in which the unit is installed.
1-10. Check of Limit Density
When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its
density does not exceed the limit level for that room.
Maximum number of connectable indoor units
when connected with minimum capacity
Total system
tonnage
Number of
indoor units
Total system
tonnage
Number of
indoor units
6 20 14 45
8 25 16 50
10 32 18 55
12 39 20~30 64
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