Carrier AquaForce 30XV140 - Daylight Saving Time Configuration; Capacity Control Overrides

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Typical configuration of the Alarm Routing variable is

11010000. This Alarm Routing status will transmit alarms to

ComfortVIEW

™

software, TeLink, BACLink, and DataLINK.

This option cannot be configured with the Touch Pilot dis-

play. To change the alarm control routing through the Network

Service Tool, navigate to point ALRM_CNT in table

ALARMDEF.

ALARM EQUIPMENT PRIORITY — The ComfortVIEW

software uses the equipment priority value when sorting alarms

by level. The purpose of the equipment priority value is to de-

termine the order in which to sort alarms that have the same

level. A priority of 0 is the highest and would appear first when

sorted. A priority of 7 would appear last when sorted. For ex-

ample, if two chillers send out identical alarms, the chiller with

the higher priority would be listed first. The default is 4. This

variable can only be changed when using the ComfortVIEW

software, or Network Service Tool. This variable cannot be

changed with the Touch Pilot display. To configure this option

with the Network Service Tool, navigate to point EQ-_TYP in

table ALARMDEF.

COMMUNICATION FAILURE RETRY TIME — This vari-

able specifies the amount of time that will be allowed to elapse

between alarm retries. Retries occur when an alarm is not ac-

knowledged by a network alarm acknowledger, which may use

either ComfortVIEW software or TeLink. If acknowledgment is

not received, the alarm will be re-transmitted after the number

of minutes specified in this decision. This variable can only be

changed when using the ComfortVIEW software, or Network

Service Tool. This variable cannot be changed with the Touch

Pilot display. To configure this option with the Network Service

Tool, navigate to point RET-Y_TM in table ALARMDEF.

RE-ALARM TIME — This variable specifies the amount of

time that will be allowed to elapse between re-alarms. A re-

alarm occurs when the conditions that caused the initial alarm

continue to persist for the number of minutes specified in this

decision. Re-alarming will continue to occur at the specified in-

terval until the condition causing the alarm is corrected. This

variable can only be changed when using the ComfortVIEW

software, or Network Service Tool. This variable cannot be

changed with the Touch Pilot display. To configure this option

with the Network Service Tool, navigate to point RE-_LARM

in table ALARMDEF.

ALARM SYSTEM NAME — This variable specifies the

system element name that will appear in the alarms generated

by the unit control. The name can be up to 8 alphanumeric

characters in length. This variable can only be changed when

using the ComfortVIEW™ software or Network Service Tool.

This variable cannot be changed with the Touch Pilot display.

To configure this option with the Network Service Tool, navi-

gate to point ALRM_NAM in table ALARMDEF.

Daylight Savings Time Configuration — The

30XV chiller with Greenspeed

intelligence control con-

tains software which can automatically correct for daylight

saving time. This software is accessible from the Touch Pi-

lot™ display, ComfortVIEW software, or Network Service

Tool.

To enable this feature, Daylight Saving Select must be set to

1. The start of daylight saving must be configured by setting

the Month, Day of Week, and Week of Month. The end for

Daylight Saving must also be configured. To configure this op-

tion with the Touch Pilot display, see Table 28.

Table 28 — Daylight Saving Time Configuration

Capacity Control Overrides — The following ca-

pacity control overrides (Main Menu  Maintenance Menu 

Capacity Control  Override Capacity A, B) will modify the

normal operation routine. If any of the override conditions list-

ed below is satisfied, the override will determine the capacity

change instead of the normal control. Overrides are listed by

priority order and are often linked to unit operating modes. See

Table 29 for a list of capacity control overrides. See the Operat-

ing Modes section on page 48 for more information regarding

operating modes.

Override #2: Low Suction Pressure

— This override is acti-

vated when the EXV is not in DSH mode and the suction satu-

ration temperature (SST) goes below 13.25 F (–10.4 C) for wa-

ter or below (13.25 – (34 – Brine Freeze Setpoint)) for units

configured with brine. The controller at this point starts to un-

load the unit until the SST exceeds 34 F (1.1 C).

Override #6: EWT < Control Point

—This override stops the

compressors without alarms.

Override #7: Ramp Loading

— No capacity increase will be

made if the unit is configured for ramp loading and the rate of

change of the leaving water is greater than Ramp Loading

Rate.

Override #9: Demand Limit

— This override mode is active

when a command to limit the capacity is received and the ca-

pacity meets or exceeds the demand limit value. If the current

unit capacity is greater than the active capacity limit value, the

unit unloads per unloading scheme. The current capacity will

stop increasing when it reaches the capacity limit value minus

3%.

Override #10: Flow Switch is Open

— This override prohib-

its compressor operation until the Evaporator flow switch is

closed.

Override #11: Customer Interlock is Closed

— This override

prohibits compressor operation until the customer interlock is

opened.

Override #12: Flow Available Delay

— This override pro-

hibits chiller operation until flow has started.

DISPLAY NAME PATH VALUE

Activate

Main Menu



Configuration Menu 

Broadcast Menu 

Brocasts

1 or 2

Default = 2

Daylight

Savings Select

Enable

Default = Dsble

Entering

Month

Enter Starting

Month for

Daylight Saving

Day of Week

(1=Monday)

Enter the Day of

the Week Daylight

Saving Starts

Week of Month

Enter Week of

the Month Daylight

Saving Starts

Leaving