Capacity Control - AERMEC NRA 0800 Manual Tecnico

? Cooling capacity %
Version
NRA 0800
NRA 0900
NRA 1000
NRA 1250
NRA 1400
NRA 1500
NRA 1650
NRA 1800
? Input power %
Version
NRA 0800
NRA 0900
NRA 1000
NRA 1250
NRA 1400
NRA 1500
NRA 1650
NRA 1800
E Heating capacity %
Version
NRA 0800 H
NRA 0900 H
NRA 1000 H
NRA 1250 H
NRA 1400 H
NRA 1500 H
NRA 1650 H
NRA 1800 H
? Input power %
Version
NRA 0800 H
NRA 0900 H
NRA 1000 H
NRA 1250 H
NRA 1400 H
NRA 1500 H
NRA 1650 H
NRA 1800 H
KEY
The per formance r efer s t o the
following conditions:
? processed water temperature =
7°C; outside air temperature =
35°C.
E processed water temperature =
50°C; outside air temperature =
7°C B.S. - 6°C B.U.

CAPACITY CONTROL

15
Levels of power
1° 2°
30 60
30 60
30 60
18 36
18 36
18 36
18 36
18 36
Levels of power
1° 2°
22 43
22 43
22 43
22 43
11 27
11 27
11 27
11 27
Levels of power
1° 2°
28 55
28 55
28 55
28 55
17 33
17 33
17 33
17 33
Levels of power
1° 2°
22 43
22 43
22 43
11 27
11 27
11 27
11 27
11 27
WARNING
As can be seen from the table, in choke
mode the reduction of the input power is
greater than the reduction of the output
power, hence obtaining an E.E.R. greater
than that in full load operation.
This is because, in capacity control mode,
the machine has the heat exchangers
"oversized" in relation to the respective
3° 4°
80 100
80 100
80 100
52 70
52 70
52 70
52 70
52 70
3° 4°
72 100
72 100
72 100
72 100
44 63
44 63
44 63
44 63
3° 4°
78 100
78 100
78 100
78 100
50 68
50 68
50 68
50 68
3° 4°
72 100
72 100
72 100
44 63
44 63
44 63
44 63
44 63
refrigerant capacities, thus allowing a
greater energy efficiency.
For this reason, this series of devices is
especially suitable for reducing energy
consumption with variable load (typical of
the comfort applications).
5° 6°
85 100
85 100
85 100
85 100
85 100
5° 6°
81 100
81 100
81 100
81 100
5° 6°
84 100
84 100
84 100
84 100
5° 6°
81 100
81 100
81 100
81 100
81 100
27