• 27 •
Wf :
Dp :
NAC/NAH 200
41
7,18
6,00
32
5,62
4
37
3,26
2
NAC/NAH 230
52
9,11
9,00
43
7,55
6
48
4,22
2
NAC/NAH 270
56
9,81
7,00
44
7,73
5
50
4,40
2
NAC/NAH 300
65
11,39
9,17
52
9,13
6
59
5,19
2
NAC 340
79
13,84
9,80
64
11,24
6
72
6,34
2
NAC 380
101
17,69
14,28
83
14,58
10
93
8,18
3
NAC 420
91
15,94
9,17
73
12,82
6
82
7,22
2
NAC 480
106
18,57
12,00
86
15,11
8
96
8,45
3
NAC 540
143
25,05
15,00
118
20,73
11
129
11,35
4
NAC 600
150
26,28
13,00
122
21,43
9
136
11,97
3
NAC 640
154
27,07
13,33
125
22,07
9
139
12,33
3
Application Guide /NEOSYS-AGU-1801-E
PARTIAL HEAT RECOVERY
Compared with the basic con
fi
guration, this option features an additional refrigerant/water
heat exchanger on the compressor discharge line, allowing recovery of 15% of the rejected
heat. This heat exchanger is large enough to recover heat for the production of free hot
water simultaneously with chilled water production. The heating capacity of the heat recovery
circuit is approximately equal to the power input of the compressor.
Typical heat recovery applications can be facilities with high domestic hot water usage,
such as health care, hotels, etc.
Notes:
This option is available on cooling only and heat-pump versions.
Heat recovery can only occur when the unit is running either in cooling or heating mode.
Partial heat recovery
Water fl ow in m
3
per hour
Water pressure drop in KPa
Water in/out: 50/55 °C
Water in/out: 55/60 °C
Water in/out: 50/60 °C
Recovery
(kW)
Wf
(m
3
/h)
Dp
(kPa)
Recovery
(kW)
Wf
(m
3
/h)
Dp
(kPa)
Recovery
(kW)
Wf
(m
3
/h)
Dp
(kPa)
Partial heat recovery
Free hot water up to 70°C
Air cooled condenser
Scroll compressor
Evaporator
Electronic expansion valve
Desuperheater
