Configurator - AERMEC NSB Serie Manual Tecnico

2.3

CONFIGURATOR

1,2,3 4,5,6,7 8
NSB 7203 °
(1) ELECTRONIC VALVE
The "ELECTRONIC EXPANSION VAL-
VES" have a wide adjustment capacity
to allow the compressors always to
work in the best operational conditions
possible (compatibly with the external
environmental conditions).
Therefore, in winter it is possible to work
with very low condensation pressure, im-
proving compressor performance and
reducing the consumption of electricity.
In our chillers the electronic valve allows
a more efficient temperature adjustment,
so much so to achieve, making the most
of the evaporator surface, lower working
temperatures being reached.
Moreover, the system does not require
calibration or future adjustments, as the
electronics continually implements its
control action on the basis of the para-
meters read by the transducers, maintai-
ning optimal overheating values.
As well as the data relative to the impro-
ved pressure conditions there are also
improved compressor temperature con-
ditions, maintaining unload temperatures
lower than with use of the standard ther-
mostatic valve.
This determines an increase of compres-
sor life and a reduction in the number of
breakdowns.
Therefore the advantages of using the
electronic valve are:
- Energy saving regarding plant con-
sumption
- Improved compressor work conditions
(lower pressures, lower discharge
temperatures), this determines less
faults and therefore the reduction of
maintenance costs.
- Permanence of the performance
through time
- Less deterioration of compressor
mechanical parts and lubrication oil
- Repeatability of adjustment results and
energy consumption through time.
All of this confirms the commitment and
respect that AERMEC has regarding
energy saving and knowledgable and so-
cially responsible use of the resources
available.
4
9 10 11 12
° ° A °
13 14 15, 1 6
° ° 00
field 15 - 16
Hydronic kit
00
PA
PB
PC
PD
PE
PF
PG
PH
PJ
PK
field 14
Power supply
°
2
4
5
8
9
field 13
Evaporator
°
C
field 12
Coil
°
R
S
V
field 11
Version
A
E
field 10
Heat recovery units
°
D
T
field 9
Model
°
field 8
Refrigerant:
°
Y
X
field 4 - 5 - 6 - 7
1251 - 1401 - 1601 - 1801 - 2101 - 2401
1402 - 1602 - 1802 - 2002 - 2202 - 2352 - 2502
- 2652 - 2802 - 3002 - 3202 - 3402 - 3602 -
3902 - 4202 - 4502 - 4802
5003 - 5203 - 5403 - 5703 - 6003 - 6303 -
6603 - 6903 - 7203
Without pumping assembly
pump A
Pump A + reserve
pump C
Pump C + reserve
pump E
Pump E + reserve
pump G
Pump G + reserve
Pump J
Pump K + reserve
3~400V-50Hz with fuses
3~230V-50Hz with fuses
3~230V-50Hz with thermomagnetic switches
3~500V-50Hz with fuses
3~400V-50Hz with thermomagnetic switches
3~500V-50Hz with thermomagnetic switches
According to PED standards
Condenser unit
Aluminium
Copper
Tinned copper
Painted aluminium copper
High efficiency
High efficiency in silenced version
Without recoverers
Desuperheater
Total recovery
Cooling only
Standar
mechanical and minimum water temperature
produced down to -6
R134a VT (1)
electronic