Carrier 30RBP-170R - Page 67

Total recovery (pressure drop curves for the plate
heat exchangers)
1
10
100
11
0100
Heat exchanger water ow rate (l/s)
Heat exchanger pressure drop (kPa)
B C D E F
G
B
30RBP 170R
E
30RBP 310R-410R
C
30RBP 190R-210R
F
30RBP 450R-550R
D
30RBP 230R-270R
G
30RBP 610R-950R
12.2.4.4 - Operating limits
30RBP 170-950 units
Total recovery exchanger Minimum Maximum
Water inlet temperature at start-up °C 25
(1)
60
Water outlet temperature during operation °C 30 65
Water inlet temperature on shut-down °C 3 70
Note: Do not exceed the maximum operating temperature.
(1) On start-up, the water inlet temperature must not be below 25 °C. For installations
with a lower temperature, a three-way valve is necessary
Operating range in cooling mode
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
-10-50 510152
025
46
Evaporator water outlet temperature (°C)
Outdoor air temperature (°C)
Part load for 30RBP
720-870
30 RBP 950
Key
Full load
Low temperature brine solution option
Part load for RBP720-870
Part load for RBP950
Notes
1. Evaporator ∆T = 5K.
2.
The unit must be either equipped with antifreeze protection options for the water
type heat exchangers (evaporator and heat recovery) and the hydraulic module
(if used), or the water loop must be protected against freezing by the installer with
an antifreeze solution
3. These ranges are guidelines only. Verify the operating range with the electronic
catalogue.
Operating range in heat recovery mode
20
25
30
35
40
45
50
55
60
65
70
-10-50 510152025
63
54
Evaporator water outlet temperature (°C)
Heat recovery water outlet temperature (°C)
Ambient temperature 0 °C
Ambient temperature -10 °C
Key
Full load
Low temperature brine solution option
Limitation to a part load of 50% below an ambient air temperature of -10 °C
Averaged values. Check the electronic catalogue for details of each unit
Limitation to a part load of 50 % below an ambient air temperature of 0 °C
Averaged values. Check the electronic catalogue for details of each unit
Notes
- Evaporator ∆T = 5K
- Condenser ∆T = 5K up to 30RBP550 and 8K for sizes 610R to 950R
- These operating ranges are guidelines only. Verify the operating range with the
electronic catalogue.
12 - OPTIONS
67