Hitachi AirCore 700 Operation Installation Maintenance Manual page 14

1. Safety Summary
•
Only use tools for R32, such as a gauge manifold, charge hose, gas leak detector, reverse flow check
valve, refrigerant charge base, vacuum gauge, or refrigerant recovery equipment.
•
If the conventional refrigerant and refrigerator oil are mixed in R32, the refrigerant may deteriorate.
•
Appliance shall be installed, operated and stored in a room with a floor area larger than A
- see table below].
•
The installation of pipe-work shall be kept to a room with a floor area larger than A
see table below].
•
The unit has requirements on the minimum required room area (A
charging amount (m). The total amount of refrigerant charged in the system corresponds to the room
area installed in the table below. The calculation result is based on the cassette-mounted unit, and
the installation height is no less than 2.2m.
Minimum required room area for each refrigerant amount charged
4-Way Cassette (for single room)
Installation Height: 2.2m
2
m(kg) A (m ) m(kg)
min
≤1.842 - 2.80
1.843 5.458 3.00
2.00 5.922 3.20
2.20 6.515 3.40
2.40 7.107 3.60
2.60 7.699 3.80
) used with different refrigerant
min
2
A (m ) m(kg) A
min min
8.291 4.00 11.845
8.884 4.20 12.437
9.476 4.40 13.029
10.068 4.60 13.622
10.660 4.80 14.585
11.253 5.00 15.826
-9-
2
(m ) [A
min
2
(m ) [A
min min
2
(m )
2
(m )
min
2
(m ) -