Capacity Control - Fujitsu AUXB04GALH Service Manual

2-3-3 Capacity Control

(1) Capacity of compressor operation
The inverter compressor is able to control the amount of required refrigerant circulation in details.
0.1 rps
[rps]
on controlling steps1
100/115
20
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.
Ex) Combnation of 65cc compressor / Heating (Heating main)
[rps]
Total capacity
115
20
INV
Stand-alone
(2) Target low-pressure and high-pressure control
<Cooling>
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.
<Heating>
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.
Operating Range
(20 to 115 rps)
[rps]
2 times 115
48
20
[kW]
2 Outdoor units
On operating range: 20 to 115 rps
Capacity
Total capacity
3 times 115
INV
INV
[kW]
02-06
Cooling 100 rps
Heating 115 rps
Total capacity
[rps]
INV
68
INV
48
20
INV
3 Outdoor units
[kW]