AIR-COOLED SCROLL CHILLERS WITH GREENSPEED INTELLIGENCE 30RBM/30RBP 160-520
Hydronic module (option 116)
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. 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.). 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. 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. 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.
Legend Components of the unit and hydronic module: 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. 15. 16. 17. 18. 19. Air purge Flexible connection Shut-off valve Screen ﬁlter (obligatory for a unit without hydronic module) Pressure gauge 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  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.
Typical hydronic circuit diagram
2 14 4 16 17 18 1
15 3 21 6
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.
This regulation concerns the application of directive 2005/32/ EC on the eco-design requirements for electric motors.
Electrical data, units with hydronic modules