3.4. DESCRIPTION AND CHOICE OF THE UNIT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
NXW 0650 ° ° ° ° ° ° ° °
Field:
1 2 3 Code NXW
4 5 6 7 Size: 0500, 0550, 0600, 0650, 0700, 0750, 0800, 0900, 1000, 1250, 1400
8 Field of use:
° Standard mechanical thermostatic valve up to +4°C
Y Low water temperature mechanical thermostatic valve down to -8°C
X Electronic thermostatic valve also for low water temperature (down to -8°C)
9 Model:
° heat pump with water side inversion
H heat pump with gas side cycle inversion
10 Version:
° standard
L silenced
11 Evaporator:
° standard
E condenserless
12 Heat recovery
° without recovery units
D with desuperheater
T with total heat recovery
13 Power supply
° 400V 3 50Hz with thermomagnetic switches
4 230V 3 50Hz with thermomagnetic switches*
5 500V 3 50Hz with thermomagnetic switches**
14 Evaporator side pumps
° without pumping assembly
M low-head pump
N low-head pump and reserve pump
O high-head pump
P high-head pump and reserve pump
15 Condenser side pumps
° without pumping assembly
U low-head pump
V low-head pump and reserve pump
W high-head pump
Z high-head pump and reserve pump
J low-head inverter pump
K high-head inverter pump
– the standard options are shown by the symbol °;
– these combinations are not possible: YD, YT HE, HT, ET, T with evaporator or condenser side pumps
* available only for sizes 0500 to 0700
** available only for sizes 0600 - 0650 and 0800 to 1400
*** "evaporator" is the heat exchanger that works as such in cooling mode; "condenser" is the heat exchanger
that works as such in heating mode
8
INXWPY. 1004. 4438805_00
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