Fujitsu AB* A12GATH, Service Manual

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[kW]
[kW]
115
[rps]
Total capacity
[kW]
[rps]
48
Total capacity
INV
INV
INV
Total capacity
[rps]
48
68
INV
INV
INV
20
20
20
2 times 115
3 times 115
Stand-alone
2 Outdoor units
3 Outdoor units
20
100/115
Operating Range
(20 to 115 rps)
Capacity
0.1 rps
on controlling steps1
On operating range: 20 to 115 rps
[rps]
2-3-3 Capacity Control
(1) Capacity of compressor operation
By combining the operation of inverter compressors, the amount of required refrigerant circulation acceding to cooling and heating
load can be supplied from compressor efficiently.
The inverter compressor is able to control the amount of required refrigerant circulation in details.
(2) Target low-pressure and high-pressure control
In order to make the evaporation pressure of the indoor unit at the proper pressure on a variety of operations,
capacity of the compressor will be controlled by low-pressure sensor.
In order to make the condensation pressure of the indoor unit at the proper pressure on a variety of operations,
capacity of the compressor will be controlled by high-pressure sensor.
<Cooling>
<Heating>
Ex) Combnation of 65cc compressor / Heating (Heating main)
Cooling 100 rps
Heating 115 rps
02-06