Hitachi RPI-0.8FSG1 - Night Shift (Low Sound) Operation

4-32
OPTIONAL FUNCTION
(4.3 Outdoor Unit)
4.3.10 Night Shift (Low Sound) Operation
By changing No.2 of the dip switch, DSW5, the night shift (low sound) operation can be set.
In case of the night shift operation, the cooling capacity is decreased down to 60%. The night shift
operation shall be applied only in case that the cooling capacity has the margin to be allowed for the
capacity decrease and the low sound operation is required especially in the nighttime.
(1) Outdoor Fan
NOTE:
The maximum rotation is always 100% (rotation ratio) for the standard unit.
(No limitation of the outdoor temperature)
(2) Frequency Range
Converted Frequency of Constant Speed Compressor
NOTE:
The maximum frequency for the 8 to 30HP outdoor unit is indicated as;
Inverter Frequency + Converted Frequency of Constant Speed Compressor.
Outdoor Unit
Capacity (HP)
Minimum
Frequency
Maximum
Frequenc
y
When 5 95Hz Except for the Conditions Below
Night Shift 8 165Hz
is not Set 10 177Hz
16 255Hz
20 325Hz
24 385Hz
30 465Hz
When 5 50Hz (1) Night Shift Operation
Night Shift 8 100Hz (2) Cooling Operation
is Set 10 114Hz (3) Outdoor Fan: Below 70%
16 140Hz
20 176Hz
24 211Hz
30 255Hz
50Hz 60Hz
50Hz 60Hz
62Hz 74Hz
70 x 2Hz 84 x 2Hz
70 x 3Hz 84 x 3Hz
70+100 x 2Hz 84+120 x 2Hz
70+140 x 2Hz 84+168 x 2Hz
24
30
30Hz
30Hz
16
20
Conditions
8
Power Supply Frequency
10
Outdoor Unit Capacity
(HP)