Table 2 — CVC/ICVC Display Data (cont)

EXAMPLE 2 — MAINTSTAT DISPLAY SCREEN

To access this display from the CVC/ICVC default screen:

1.Press MENU .

2.Press STATUS ( MAINSTAT will be highlighted).

3.Press SELECT .

DESCRIPTION

STATUS

UNITS

POINT

Control Mode

NOTE 1

NOTE 1

MODE

Run Status

NOTE 2

NOTE 2

STATUS

Start Inhibit Timer

0-15

min

T_START

Occupied?

0/1

NO/YES

OCC

System Alert/Alarm

0-2

NOTE 3

SYS_ALM

*Chiller Start/Stop

0/1

STOP/START

CHIL_S_S

*Remote Start Contact

0/1

OPEN/CLOSE

REMCON

Temperature Reset

–30-30

DEG F

T_RESET

*Control Point

10-120

DEG F

LCW_STPT

Chilled Water Temp

–40-245

DEG F

CHW_TMP

*Active Demand Limit

40-100

%

DEM_LIM

Average Line Current

0-999

%

%_AMPS

Motor Percent Kilowatts

0-999

%

KW_P

Auto Demand Limit Input

4-20

mA

AUTODEM

Auto Chilled Water Reset

4-20

mA

AUTORES

Remote Reset Sensor

–40-245

DEG F

R_RESET

Total Compressor Starts

0-99999

 

c_starts

Starts in 12 Hours

0-8

 

STARTS

Compressor Ontime

0-500000.0

HOURS

c_hrs

*Service Ontime

0-32767

HOURS

S_HRS

Ice Build Contact

0-1

OPEN/CLOSE

ICE_CON

Refrigerant Leak Sensor

0-20

mA

REF_LEAK

NOTES:

1.Reset, Off, Local, CCN

2.Timeout, Ready, Recycle, Prestart, Start-up, Ramping, Running, Demand, Override, Shutdown, Trippout, Pumpdown, Lockout

3.Normal, Alert, Alarm

4.All variables with capital letter point names are available for CCN read operation. Those shown with (*) support write operations for all CCN devices.

EXAMPLE 3 — STARTUP DISPLAY SCREEN

To access this display from the CVC/ICVC default screen:

1.Press MENU .

2.Press STATUS .

3.Scroll down to highlight

4.Press SELECT .

STARTUP .

DESCRIPTION

STATUS

UNITS

POINT

Actual Guide Vane Pos

0-100

%

GV_ACT

**Chilled Water Pump

0-1

OFF/ON

CHWP

Chilled Water Flow

0-1

NO/YES

CHW_FLOW

**Condenser Water Pump

0-1

OFF/ON

CDP

Condenser Water Flow

0-1

NO/YES

CDW_FLOW

Oil Pump Relay

0-1

OFF/ON

OILR

**Oil Pump Delta P

–6.7-200

^PSI

OILPD

Compressor Start Relay

0-1

OFF/ON

CMPR

Compressor Start Contact

0-1

OPEN/CLOSED

CR_AUX

Starter Trans Relay

0-1

OFF/ON

CMPTRANS

Compressor Run Contact

0-1

OPEN/CLOSED

RUN_AUX

**Tower Fan Relay Low

0-1

OFF/ON

TFR_LOW

**Tower Fan Relay High

0-1

OFF/ON

TFR_HIGH

Starter Fault

0-1

ALARM/NORMAL

STR_FLT

Spare Safety Input

0-1

ALARM/NORMAL

SAFETY

Shunt Trip Relay

0-1

OFF/ON

TRIPR

ISM Fault Status

0-255

 

STRSTAT

NOTE: All variables with CAPITAL LETTER point names are available for CCN read operation. Those shown with (**) shall support write operations for the CVC/ICVC only.

23

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Carrier XRV, 19XR Example 2 Maintstat Display Screen, Description Status Units Point, Example 3 Startup Display Screen

19XR, XRV specifications

The Carrier 19XR and 19XRV chillers are sophisticated cooling solutions that represent the forefront of HVAC technology. Designed for large commercial and industrial applications, these chillers provide exceptional performance, energy efficiency, and reliability, making them ideal for a variety of environments ranging from hospitals to manufacturing facilities.

One of the most significant features of the Carrier 19XR and 19XRV chillers is their advanced scroll compressor technology. These units employ a tandem scroll design that enhances efficiency while minimizing operational noise. This makes them ideal for urban environments where noise restrictions may be in place. Moreover, the compressors are equipped with variable speed drive options in the 19XRV model, which allows for greater energy savings by adjusting cooling output based on real-time demand.

In addition to their advanced compressors, the 19XR and 19XRV units incorporate the Carrier GreenChoice refrigerant, which has a lower global warming potential compared to traditional refrigerants. This innovative choice not only meets regulatory requirements but also contributes to sustainability goals, making these chillers a responsible choice for environmentally conscious organizations.

The units are engineered with a robust heat exchanger design, which enhances heat transfer efficiency and overall system performance. This ensures optimal operation even in extreme conditions. They feature a microprocessor-based control system that allows for precise monitoring and control of the chiller’s performance, enabling operators to make real-time adjustments to maximize energy efficiency.

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Overall, the Carrier 19XR and 19XRV chillers stand out in the market for their blend of cutting-edge technology, energy efficiency, and user-friendly features. They are engineered to meet the demanding needs of modern commercial and industrial applications, making them a preferred choice for facility managers seeking reliable cooling solutions.