Daylight saving time configuration, Capacity control overrides – Carrier AQUAFORCE 30XW150-400 User Manual

Page 43

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43

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 with the Touch Pilot display,

ComfortVIEW, or Network Service Tool. This variable cannot

be changed with the Navigator display. To configure this option

with the Touch Pilot display:

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 Touch Pilot display, ComfortVIEW, or Network

Service Tool. This variable cannot be changed with the

Navigator display.

To configure this option with the Touch Pilot display:

Daylight Saving Time Configuration —

The

30XW chiller control contains software which can automati-

cally correct for daylight saving time. This software is accessi-

ble from the Touch Pilot display, ComfortVIEW, or Network

Service Tool. It is not accessible through the Navigator display.

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 32.

Table 32 — Daylight Savings Time Configuration

Capacity Control Overrides —

The following ca-

pacity control overrides (Active Capacity Override, CAP.S)

will modify the normal operation routine. If any of the override

conditions listed below are satisfied, the override will deter-

mine the capacity change instead of the normal control. Over-

rides are listed by priority order and are often linked to unit op-

erating modes. See Table 33 for a list of overrides. See the Op-

erating Modes section on page 54 for more information

regarding operating modes.
Override #1: Cooler Freeze Protection — This override at-

tempts to avoid the freeze protection alarm. If the Leaving

Water Temperature is less than Brine Freeze Set Point (Brine

Freeze Setpoint, LOSP) + 2.0° F (1.1º C) then a stage of

capacity is removed.
NOTE: The freeze set point is 34 F (1.1 C) for fresh water

systems (Cooler Fluid Type, FLUD=1). The freeze set point

is Brine Freeze Set Point (Brine Freeze Setpoint, LOSP), for

Medium Temperature Brine systems (Cooler Fluid Type,

FLUD=2).

DISPLAY

NAME

PATH

LINE NO.

VALUE

Realarm
Time

Config

ALARMDEF

4

Range = 1 to 254 minutes
255 = Re-Alarm Disabled
Default = 30 minutes

DISPLAY NAME

PATH

LINE NO.

VALUE

Alarm System
Name

Config

ALARMDEF

5

Default =
PRO_XAXQ

DISPLAY NAME

PATH

LINE NO.

VALUE

Activate

Config

BRODEFS

1

1 or 2
Default = 2

Daylight
Saving Select

Config

BRODEFS

7

Enable
Default = Dsble

Entering

Config

BRODEFS

8

Month

Config

BRODEFS

9

Enter Starting
Month for
Daylight Saving

Day of Week
(1=Monday)

Config

BRODEFS

10

Enter the Day of
the Week Daylight
Saving Starts

Week of Month

Config

BRODEFS

11

Enter Week of
the Month Daylight
Saving Starts

Leaving

Config

BRODEFS

12

Month

Config

BRODEFS

13

Enter Ending
Month for
Daylight Saving

Day of Week
(1=Monday)

Config

BRODEFS

14

Enter the Day of
the Week Daylight
Saving ends

Week of Month

Config

BRODEFS

15

Enter Week of
the Month Daylight
Saving ends


DESCRIPTION

STATUS POINT

Alarm Routing

0 0 0 0 0 0 0 0 ALRM_CNT

ComfortView™, or ComfortWorks

TeLink

Unused

BacLink or DataLink™

Unused

®

Fig. 26 — Alarm Routing Control

a30-4485

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