Carrier 30XW150-400 Daylight Savings Time Configuration, Alarm Routing Control, Description

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:

DISPLAY	PATH	LINE NO.	VALUE
NAME
Realarm	Config→ ALARMDEF		Range = 1 to 254 minutes
		4	255 = Re-Alarm Disabled
Time
			Default = 30 minutes

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:

DISPLAY NAME	PATH	LINE NO.	VALUE
Alarm System	Config→ ALARMDEF	5	Default =
Name			PRO_XAXQ

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

DISPLAY NAME	PATH	LINE NO.	VALUE
Activate	Config→ BRODEFS	1	1 or 2
			Default = 2
Daylight	Config→ BRODEFS	7	Enable
Saving Select			Default = Dsble
Entering	Config→ BRODEFS	8
Month	Config→ BRODEFS		Enter Starting
		9	Month for
			Daylight Saving
Day of Week	Config→ BRODEFS		Enter the Day of
		10	the Week Daylight
(1=Monday)
			Saving Starts
Week of Month	Config→ BRODEFS		Enter Week of
		11	the Month Daylight
			Saving Starts
Leaving	Config→ BRODEFS	12
Month	Config→ BRODEFS		Enter Ending
		13	Month for
			Daylight Saving
Day of Week	Config→ BRODEFS		Enter the Day of
		14	the Week Daylight
(1=Monday)
			Saving ends
Week of Month	Config→ BRODEFS		Enter Week of
		15	the Month Daylight
			Saving ends

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).

DESCRIPTION				STATUS					POINT
Alarm Routing	0	0	0	0	0	0	0	0	ALRM_CNT
ComfortView™, or ComfortWorks®
TeLink
Unused
BacLink or DataLink™
Unused									a30-4485

Fig. 26 — Alarm Routing Control

43