AIR-COOLED SCROLL CHILLERS WITH
GREENSPEED INTELLIGENCE 30RBM/30RBP 160-520
®
Hydronic module (option 116)
Hydronic module
The new generation of Carrier hydronic module saves a lot of
installation time. The chiller is factory-equipped with the main
components for the hydronic system: Water pump, electronic
flow switch, Victaulic screen filter, pressure transducers,
water temperature sensors, pressures taps (2), safety valve,
drain valve, air vent, water purge, optional hydronic module
heater and optional expansion tank.
If necessary increased frost protection down to -20 °C is
possible by adding the heater option to the hydronic module
piping (see options 42A).
The hydronic module option is integrated into the chiller
without increasing its dimensions and saves the space
normally used for the water pump.
Typical hydronic circuit diagram
2
5
16
23
18
17
4
11
1
15
3
P
T
7
9
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Screen filter (mesh opening 1.2 mm)
Expansion tank (option)
Safety valve
Available pressure pump (single pump or dual pump)
Air purge
Water drain valve
Pressure sensor
Note: Gives pump suction pressure information
Temperature probe Note: Gives heat exchanger leaving temperature information
Temperature probe Note: Gives heat exchanger entering temperature information
Pressure sensor
Note: Gives unit leaving pressure information
Plate heat exchanger
Evaporator frost protection heater (option)
Installation components
14. Air purge
15. Flexible connection
16. Shut-off valve
17. Screen filter (obligatory for a unit without hydronic module)
18. Pressure gauge
19. Water flow control valve
Note: Not necessary for a hydronic module with a variable-speed pump
20. Charge valve
21. Frost protection bypass valve (when shut-off valves [16] are closed during winter)
23. Temperature probe well
--- Hydronic module (unit with hydronic module)
Notes:
The installation must be protected against frost.
The hydraulic module and unit evaporator are protected (option 42A, factory installed)
).
against frost with electric heaters (item 12 +
The pressure sensors are installed at connections without Schraeder valves. Depressurise
and drain the system before any intervention.
option
14
Components of the unit and hydronic module:
6
HEATING HEATING
Several water pump types are available to suit any
application:
-- Single or dual low-pressure pump or single or dual
high-pressure pump
-- Greenspeed variable-speed single or dual highpressure pump.
Legend
AIR TREATMENT
On units fitted with Greenspeed variable-speed pump, the
user display enables to:
-- Adjust the required pump speed
-- Adjust the required available pressure at the unit outlet
and the static system pressure, to real customer
needs thus saving energy: no need any more for a
water flow control valve used for creating artificial
pressure drops that are wasting energy.
COOLING
The pressure transducers allow the control to:
-- Display the available pressure at the unit outlet and
the static system pressure
-- Calculate the instantaneous flow rate, using an
algorithm that integrates the unit characteristics
-- Integrate the system and water pump protection
devices (lack of water, water pressure, water flow rate,
etc.).
12
21
option
15
23
16
18
19
P
T
10
8
6
Electrical data, units with hydronic modules
The pumps that are factory-installed in these units have
motors with efficiency class IE2. The additional electrical data
required by regulation 640/2009 is given in the installation,
operation and maintenance manual.
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
This regulation concerns the application of directive 2005/32/
EC on the eco-design requirements for electric motors.
137
CONTROLS
20