Carrier 30RBM 160 Installation, Operation And Maintenance Instructions page 54

12.2.6 - Brine option (Options 5B and 6B)
The 5B medium-temperature brine solution option is used to
produce low temperature chilled water down to 0°C.
Production of brine solution from 0°C to -15°C is only possible
with the 6B low-temperature brine solution.
The unit is equipped with insulation on the intake tubes. The
insulation is reinforced on the low-temperature brine solution
option.
Operating range
• Low-temperature brine solution
30RBM 160-400 and 30RBP 160-400
Low-temperature Propylene Glycol
50
48
45
40
35
31
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-15 -14 -13 -12 -11 -10 -9 -8
Brine solution mix type heat exchanger leaving water temperature (°C)
• Medium-temperature brine solution
30RBM 160-520 and 30RBP 160-520
Medium-temperature Ethylene and Propylene Glycol
50
48
45
43
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-2 -1 0
Brine solution mix type heat exchanger leaving water temperature (°C)
54
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
1 2 3 4
The operating range depends on:
• the size of the unit,
• the glycol type,
• its concentration,
• the flow rate,
• the temperature of the glycol solution,
• the condensation pressure (ambient temperature).
50
48
45
40
35
30
28
25
20
15
10
5
0
-5
-10
-15
-20
-25
-20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0
5 6
Brine solution type heat exchanger leaving water temperature (°C)
NOTES
-
-
Legend
Operating range for 30RBM or 30RBP brine solution unit
Operating range for 30RBM unit equipped with options 28B and 28C (winter
operation). Options 28B-28C (with two-speed lead fan for each circuit) allows
operation down to -10 °C outside temperature.
RBP operating range or extension of the operating range, 30RBM unit
equipped with option 28. Option 28 (with variable-speed lead fan for each
circuit) allows operation down to -20°C outside temperature.
5 6
30RBM 160-400 and 30RBP 160-400
Low-temperature Ethylene Glycol
Evaporator ∆T = 5K max
These operating ranges are guidelines only. Verify the operating range with the
Carrier electronic catalogue.
1 2 3 4 5 6 7