Options
■■ High-pressure single or dual pump, evaporator
■■ Condenser hydronic module with variable-speed single or
dual pump
■■ Heat pump (hot-water control)
■■ Electronic starter for reduced startup current
■■ RS485 communications and “CCN Clock Board” time
schedule board
■■ Very low temperature glycol solution down to -10°C
■■ Field water connections at the unit top
■■ T
en sizes with nominal cooling capacities from 109 to
315 kW.
■■ AquaSnap chillers with scroll compressors, digital
auto-adaptive Pro-Dialog control and Non-ozone
depleting refrigerant HFC-407C.
■■ Can be supplied with integrated hydronic evaporator and
condenser modules, limiting the installation to simple
operations such as the entering and leaving water piping
connection.
■■ Intelligent control of condenser water pump speed and
operation of glycol cooler (30RW) or air-cooled condenser
fans (30RWA) to ensure reliable and economical
operation.
■■ Quick electrical connections.
■■ Units can operate down to -20°C outside temperature.
■■ The variable-speed condenser water pump automatically
adjusts the water flow rate to maintain the ideal
condensing conditions.
■■ High-performance plate heat exchangers maximise the
thermodynamic properties of refrigerant HFC-407C. From
size 30RW 160 the evaporator and the condenser have
two interlaced refrigerant circuits.
■■ Space-saving design.
■■ No plant room required – unit can be installed in a place
that is open to the public, if local regulations permit.
■■ The refrigerant circuit is completely leak-proof.
■■ Used with Carrier 09 series glycol coolers or air-cooled
condensers, supplied ready for installation with a control
box. All control components are installed and tested in
the factory.
30RW
30RWA
Leaving condenser water temperature, °C
Condensing temperature, °C
Operating limits
52
50
45
40
C
35
B
A
30
25
20
-10
-5
0
10
5
45
D
40
35
30
25
20
15
10
E
5
0
-5
-10
-15
-20
-10
-5
0
5
10
15
Leaving evaporator water temperature, °C
Notes 30RW
1.
Evaporator and condenser ∆T = 5 K
2.
For 30RW units without hydronic module with an entering condenser water temperature below 20°C a
three-way valve is required to allow operation, while maintaining the correct condensing temperature.
3.
For 30RW units equipped with a hydronic module the minimum entering water temperature is -15°C.
4.
Maximum leaving condenser water temperature is 52°C (at full load)
A
Standard unit with without antifreeze solution
B
Standard unit operation with the anti-freeze solution required and control configuration for a leaving
water temperature down to 0°C.
C
Standard unit operation with the anti-freeze solution required and control configuration for a leaving
water temperature down to -10°C.
D
Operation at high air temperature is based on the drycooler selected.
E
Operation at low air temperature is possible down to -20°C with a drycooler.
236
64
60
55
50
A
45
40
35
30
15
0
-5
-10
Leaving evaporator water temperature, °C
5
10
15
10
15
Leaving evaporator water temperature, °C
Leaving remote condenser air temperature, °C
Leaving drycooler air temperature, °C
COOLING
Features and advantages
50
45
B
40
35
30
25
20
C
15
10
5
0
D
-5
-10
0
-5
-10
5
Leaving evaporator water temperature, °C
Notes 30RWA
1.
Evaporator ∆T = 5 K
2.
Unit operation is limited by the maximum compressor condensing temperature of 64°C.
A
Standard unit operation with the anti-freeze solution required and special control configuration.
B
Operation at high air temperature is based on the condenser selected.
C
Operating range down to 0°C, if the air-cooled condenser is not equipped with a variable-speed head fan.
D
Extended operating range with variable-speed fan.
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7