Carrier Comprehensive Guide to ICVC Functions and Display Data

Table 2 — CVC/ICVC Display Data

IMPORTANT: The following notes apply to all Table 2 examples.

1.Only 12 lines of information appear on the chiller display screen at any one time. Press the NEXT or PREVIOUS softkey to highlight a point or to view items below or above the current screen. Press the NEXT softkey twice to page forward; press the PREVIOUS softkey twice to page back.

2.To access the information shown in Examples 10 through 22, enter your 4-digit password after pressing the SERVICE soft- key. If no softkeys are pressed for 15 minutes, the CVC/ICVC automatically logs off (to prevent unrestricted access to PIC II controls) and reverts to the default screen. If this happens, you must re-enter your password to access the tables shown in Examples 10 through 22.

3.Terms in the Description column of these tables are listed as they appear on the chiller display screen.

4.The CVC/ICVC may be configured in English or Metric (SI) units using the CVC/ICVC CONFIGURATION screen. See the Service Operation section, page 45, for instructions on making this change.

5.The items in the Reference Point Name column do not appear on the chiller display screen. They are data or variable names used in CCN or Building Supervisor (BS) software. They are listed in these tables as a convenience to the operator if it is necessary to cross reference CCN/BS documentation or use CCN/BS pro- grams. For more information, see the 19XR CCN literature.

6.Reference Point Names shown in these tables in all capital let- ters can be read by CCN and BS software. Of these capitalized names, those preceded by a dagger can also be changed (that is, written to) by the CCN, BS, and the CVC/ICVC. Capitalized Reference Point Names preceded by two asterisks can be changed only from the CVC/ICVC. Reference Point Names in lower case type can be viewed by CCN or BS only by viewing the whole table.

7.Alarms and Alerts: An asterisk in the far right field of a CVC/ ICVC status screen indicates that the chiller is in an alarm state; an exclamation point in the far right field of the CVC/ICVC screen indicates an alert state. The asterisk (or exclamation point) indi- cates that the value on that line has exceeded (or is approach- ing) a limit. For more information on alarms and alerts, see the Alarms and Alerts section, page 15.

LEGEND

CCN — Carrier Comfort Network

CHW — Chilled Water

CHWR — Chilled Water Return

CHWS — Chilled Water Supply

CVC — Chiller Visual Controller

CT — Current Transformer

ECW — Entering Chilled Water

HGBP — Hot Gas Bypass

ICVC — International Chiller Visual Controller

ISM — Integrated Starter Module

LCW — Leaving Chilled Water

LRA — Locked Rotor Amps

mA — Milliamps

P— Pressure

PIC II — Product Integrated Controls II

SS— Solid State

T — Temperature

VFD — Variable Frequency Drive WSM — Water System Manager

EXAMPLE 1 — CHILLER DISPLAY DEFAULT SCREEN

The following data is displayed in the Default screen.

DESCRIPTION	STATUS	UNITS	REFERENCE POINT NAME	DISPLAY
			(ALARM HISTORY)
(PRIMARY MESSAGE)
(SECONDARY MESSAGE)
(DATE AND TIME)
Compressor Ontime	0-500000.0	HOURS	C_HRS
Entering Chilled Water	–40-245	DEG F	ECW	CHW IN
Leaving Chilled Water	–40-245	DEG F	LCW	CHW OUT
Evaporator Temperature	–40-245	DEG F	ERT	EVAP REF
Entering Condenser Water	–40-245	DEG F	ECDW	CDW IN
Leaving Condenser Water	–40-245	DEG F	LCDW	CDW OUT
Condenser Temperature	–40-245	DEG F	CRT	COND REF
Oil Pressure	0-420	PSI	OILPD	OILPRESS
Oil Sump Temp	40-245	DEG F	OILT	OIL TEMP
Average Line Current	0-999	%	AMPS_%	AMPS%
	0-1		CCN
	0-1		LOCAL
	0-1		RESET

NOTE: The last three entries are used to indicate operating mode to the PIC II. These values may be forced by the CVC/ICVC only.

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