DUCTABLE AIR-COOLED LIQUID CHILLERS
30RBSY 039-160
Air pressure drop
The 30RBSY ranges are designed for indoor installation in
a plant room. For this type of installation the cold or hot air
leaving the air-cooled air heat exchangers is discharged by
the fans to the outside of the building, using a duct system.
The units are equipped with fans with available pressure,
designed to operate with air discharge ducts with maximum
pressure drops of 180 Pa or 240 Pa on certain sizes.
Selection based on the
pressure drop
The cooling and heating capacities are given for an available
pressure of 160 Pa and for a unit without filter.
To calculate the performances at other pressure drops please
use the correction factors below.
Cooling mode
In the cooling mode, the full-load or part-load speed
is controlled by a patented algorithm that permanently
optimises the condensing temperature to ensure the best unit
energy efficiency (EER) whatever the operating conditions
and pressure drops of the system ductwork.
In the heating mode, the full-load or part-load speed of
each circuit is fixed and at the configured maximum (range
configurable from 12 r/s to 19 r/s) based on the constraints
and characteristics of the installation site. The maximum
configured speed applies to both the heating and cooling
mode.
Duct pressure
drop
Fan speed, r/s
Power input
coefficient
Cooling capacity
coefficient
0
50
100
130
160
200
240
12.00
13.33
14.66
15.46
16.26
17.31
18.36
0.943
0.962
0.980
0.990
1.000
1.012
1.023
1.019
1.012
1.006
1.003
1.000
0.998
0.996
30RBSY 070-080/30RBSY 140-160
Duct pressure
drop
Fan speed, r/s
Power input
coefficient
Cooling c
apacity
coefficient
0
50
100
130
160
180
15.83
16.81
17.78
18.36
18.36
18.36
0.929
0.944
0.964
0.978
1.000
1.019
1.018
1.016
1.014
1.011
1.000
0.991
CONTROLS
AIR TREATMENT
Each refrigerant circuit (A and B) must have a separate
ducting system to prevent any air recycling between the air
heat exchangers of the different refrigerant circuits.
30RBSY 039-060/30RBSY 090-120
HEATING HEATING
To compensate for these pressure drops this range of
ductable units equipped with variable-speed fans with a
maximum speed of 19 r/s.
COOLING
Selection of a ductable unit
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
119