DUCTABLE AIR-COOLED LIQUID CHILLERS 30RBSY 039-160 Carrier Comfort Network (CCN) operating mode
A simple two-wire communication bus between the RS485 port of the AquaSnap and the Carrier Comfort Network offers multiple remote control, monitoring and diagnostic possibilities. Carrier offers a vast choice of control products, specially designed to control, manage and supervise the operation of an air conditioning system. Please consult your Carrier representative for more information on these products.
Remote operating mode with dry contacts (standard)
Start/stop: Opening of this contact will shut down the unit Dual set point: Closing of this contact activates a second set point (example: unoccupied mode) Water pump 1 and 2 control (contacts supplied with the hydronic module option)*: These outputs control the contactors of one or two water heat exchanger water pumps Alarm indication: this volt-free contact indicates the presence of a major fault that has led to the shut-down of one or two refrigerant circuits Demand limit 1 and 2: Losing of these contacts limits the maximum unit capacity to three predeﬁned values User safety: This contact can be used for any customer safety loop, closing of the contact generates a speciﬁc alarm
Evaporator water ﬂow rate
Flow rate, l/s 30RBSY Minimum Maximum* Maximum dual pump**
Entering water temperature at start-up °C 7.5* 5** 3 -20 -20 30 20 10 46 48
30RBSY Low pressure*** High pressure***
3.4 3.8 4.0 4.4 5.0 5.2 6.2 6.5 8.0 8.7 8.9 Evaporator Leaving water temperature during operation °C Entering/leaving water temperature difference K Condenser Entering air temperature, full load*** Entering air temperature, part load*** Hydronic module**** Entering air temperature Kit without pump Kit with pump (option 116x) Kit with pump (option 116x) and frost protection option to -20°C (option 42) °C °C °C -20 -10 -20 °C °C
039 045 050 060 070 080 090 100 120 140 160
* ** ***
0.9 0.9 0.9 0.9 1.0 1.2 1.3 1.5 1.7 2.0 2.3
3.0 3.4 3.7 4.2 5.0 5.5 6.8 7.7 8.5 10.6 11.2
2.9 3.2 3.3 3.7 4.1 4.4 5.1 6.3 6.5 7.9 8.2
Maximum ﬂow rate at a pressure drop of 100 kPa in the plate heat exchanger (unit without hydronic module). Maximum ﬂow rate at an available pressure of 20 kPa (unit with low-pressure hydronic module) or 50 kPa (high-pressure module). Maximum ﬂow rate with single pump is 2 to 4% higher, depending on the size.
Note: Do not exceed the maximum operating temperature. * ** For entering water temperatures below 7.5°C at start-up, contact Carrier. For low-temperature applications, where the leaving water temperature is below 5°C, a frost protection solution must be used. *** For transport and storage of the 30RBSY units the minimum and maximum allowable temperatures are -20°C and +48°C. It is recommended that these temperatures are used for transport by container. **** Deﬁnes the frost-free temperature of the hydronic components for use without glycol.
Outside air temperature, °C
35 25 15 5 -5 -15 -25 0 5 10 15 20 25 30RBSY
Evaporator leaving water temperature, °C
Full load Minimum load
Note: This operating range applies up top 130 Pa static pressure without suction air duct for sizes 070-080 and 140-160, and up to 240 Pa for all other sizes.