Carrier 30XW325-400 m. Time of day, J. Operating Characteristics, K. Electrical Requirements

m. Time of day:

1)Display module, in conjunction with the microprocessor, must also be capable of displaying the output (results) of a ser- vice test. Service test shall verify opera- tion of every switch, thermistor, and compressor before chiller is started.

2)Diagnostics shall include the ability to review a list of the 30 most recent alarms with clear language descriptions of the alarm event. Display of alarm codes without the ability for clear lan- guage descriptions shall be prohibited.

3)An alarm history buffer shall allow the user to store no less than 30 alarm events with clear language descriptions, time and date stamp event entry.

4)The chiller controller shall include multi- ple connection ports for communicating with the local equipment network, the Carrier Comfort Network (CCN) sys- tem and the ability to access all chiller control functions from any point on the chiller.

5)The control system shall allow software upgrade without the need for new hard- ware modules.

J.Operating Characteristics:

Unit shall be capable of starting up with 95 F (35 C) entering fluid temperature to the evaporator.

K.Electrical Requirements:

1.Unit primary electrical power supply shall enter the unit at a single location.

2.Unit shall operate on 3-phase power at the volt- age shown in the equipment schedule.

3.Control voltage shall be 115-v (60 Hz), single- phase, separate power supply.

L.Special Features:

Certain standard features are not applicable when the features designated by * are specified. For assis- tance in amending the specifications, contact your local Carrier Sales office.

*1. Wye-Delta Starter:

Unit shall have a factory-installed, wye-delta starter to minimize electrical inrush current.

2.Vibration Isolation:

Unit shall be supplied with rubber-in-shear vibration isolators for field installation.

3.Control Power Transformer:

Unit shall be supplied with a factory-installed controls transformer that will supply control cir- cuit power from the main unit power supply.

4.Temperature Reset Sensor:

Unit shall reset leaving chilled fluid temperature based on outdoor ambient temperature or space temperature when this sensor is installed.

* 5. Minimum Load Control:

Unit shall be equipped with factory-installed, microprocessor-controlled, minimum load con- trol that shall permit unit operation down to 10% of full capacity.

6.One-Pass Evaporator:

Factory-installed option shall reduce pressure drop for high flow applications.

7.Three-Pass Evaporator:

Factory-installed option shall enhance perfor- mance for low flow applications.

8.Energy Management Module:

A factory or field installed module shall provide the following energy management capabilities: 4 to 20 mA signals for leaving fluid temperature reset, cooling set point reset or demand limit control; 2-point demand limit control (from 0 to 100%) activated by a remote contact closure; and discrete input for "Ice Done" indication for ice storage system interface.

9.BACnet™ Translator Control:

Unit shall be supplied with field-installed inter- face between the chiller and a BACnet Local Area Network (LAN, i.e., MS/TP EIA-485).

10.LON Translator Control:

Unit shall be supplied with field-installed inter- face between the chiller and a Local Operating Network (LON, i.e., LonWorks® FT-10A ANSI/EIA-709.1).

11.Navigator™ Hand Held Portable Display:

a.Portable hand held display module with a minimum of 4 lines and 20 characters per line, or clear English, Spanish, Portuguese or French language.

b.Display menus shall provide clear language descriptions of all menu items, operating modes, configuration points and alarm diag- nostics. Reference to factory codes shall not be accepted.

c.RJ-14 connection plug shall allow display module to be connected to factory-installed receptacle.

d.Industrial grade coiled extension cord shall allow the display module to be moved around the chiller.

e.Magnets shall hold the display module to any sheet metal panel to allow hands-free operation.

f.Display module shall have NEMA 4x housing.

g.Display shall have back light and contrast adjustment for easy viewing in bright sun- light or night conditions.

h.Raised surface buttons with positive tactile response.

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