Operating limits, standard units
*
**
Evaporator water flow rates
30HXC
Minimum flow rate, l/s* Maximum flow
rate, l/s**
Open loop Closed
loop
080-110
120-130
140-155
175-190
200
230-285
310-375
2.3
3.1
3.7
4.3
4.9
6.7
8
7
9.3
11.1
13
14.8
20.1
24
28.2
37.1
44.5
51.9
59.2
80.4
95.9
Based on a velocity of 0.3 m/s in a closed loop and 0.9 m/s in an open loop.
Based on a water velocity of 3.6 m/s.
*
30HXC
Minimum flow rate, Maximum flow rate,
l/s
l/s*
080-090
100
110
120-130
140-155
175-190
200
230
260-285
310
345-375
5.2
6.5
7.4
8.3
9.4
11.5
14.1
16.3
18.3
20.9
23
20.8
25.9
29.6
33.4
37.8
45.9
56.3
65.2
73.4
83.7
91.9
The maximum flow rate corresponds to a pressure drop of 100 kPa.
Operating range, standard units
58
Condenser entering water temperature, °C
COOLING
Condenser water flow rates
50
B
45
A
35
Notes:
1. Evaporator and condenser Δ T = 5 K
2. For start-up at full load with a condenser water entering temperature below 20°C, a
three-way valve must be used to maintain the correct condensing temperature.
3. Maximum condenser water leaving temperature 50°C (at full load).
4. For low evaporator leaving water temperatures <+4°C and >-10°C please order option 6.
A Standard unit operating at full load.
B Standard unit operating at reduced load.
C Units operating with head pressure control with analogue water control valve.
For transient operating modes (start-up and part load) the unit can operate down to a
condenser entering water temperature of 13°C.
30
25
20
C
15
13
4
5
10
13 15
°C
Additional operating range for high condensing temperature units and non-reversible heat
pumps.
Evaporator leaving water temperature, °C
244
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7