![background image](http://html1.mh-extra.com/html/carrier/aquasmart-30ev-series/aquasmart-30ev-series_installation-operation-and-maintenance_2562371011.webp)
11
Table 4 - Availability of Items by Specifi cation Standard
Item
Factory Default
Factory Optional Item
30EVA
30EXA
30EVA
30EXA
ELECTRICAL SWITCHBOARD
Control voltage 220V
X
X
Control voltage 24V*
X
X
Power factor correction
X
X
Sequence / phase loss protection (on main board)
X
X
ModBus Kit **
X
X
Overcurrent protection (on main board)
X
X
COOLING SYSTEM
Scroll compressors
X
X
Crank-case resistor
X
X
High and low pressure switch
X
X
Filter on suction (solid)
X
X
Dryer fi lter
X
X
Thermostatic expansion valve (TXV)
X
X
Service valve on the high and low sides
X
X
Locking valve on the high and low sides
X
X
Condensation control
X
X
Safety valve for evaporator
X
X
Liquid sight glass
X
X
Suction accumulator
X
-
Freezing protection
X
X
OTHERS
Flow switch***
X
X
System water inlet/outlet sensors ***
X
X
Victaulic-type connection with Y Filter Kit
X
X
NR-13
X
X
*
The machine control voltage is 220V, but with 24V output for pump control and water valve. (Water pump and valve
are not included in the chillers).
** Converter that allows communication in the Modbus RTU protocol.
*** Provided by Carrier and installation is the customer’s responsibility. The flow switch must be installed before
starting the unit.
Aquasmart units have the main protection routines:
• Evaporator freezing (plate changer);
• High discharge temperatures, saturated suction and suction;
• Oil return;
• Excessive cycle of compressors;
• Water temperature limits;
• Water fl ow.
The Aquasmart units also off er:
• Option to turn on and off remotely;
• Remote alarm signal (for Inverter systems only);
• Reset of a unit or system through the control (Access the Service menu and use password “325193”).