Press QUIT to leave the selected decision or field with- out saving any changes.

Press ENTER to leave the selected decision or field and save changes.

Press NEXT to scroll the cursor bar down in order to highlight a point or to view more points below the cur- rent screen.

Press PREVIOUS to scroll the cursor bar up in order to highlight a point or to view points above the current screen.

Press SELECT to view the next screen level (high- lighted with the cursor bar), or to override (if allowable) the highlighted point value.

Press EXIT to return to the previous screen level.

Press INCREASE or DECREASE to change the high- lighted point value.

TO VIEW STATUS (Fig. 16) — The status table shows the actual value of overall chiller status such as CONTROL MODE, RUN STATUS, AUTO CHILLED WATER RESET, and REMOTE RESET SENSOR.

1.On the menu screen, press STATUS to view the list of point status tables.

2.Press NEXT or PREVIOUS to highlight the desired status table. The list of tables is:

•MAINSTAT — Overall chiller status

•STARTUP — Status required to perform start-up of chiller

•COMPRESS — Status of sensors related to the compressor

•HEAT_EX — Status of sensors related to the heat exchangers

•POWER — Status of motor input power

•ISM_STAT — Status of motor starter

•CVC_PSWD — Service menu password forcing access screen

•ICVC_PSWD — Service menu password forcing access screen

3.Press SELECT to view the desired point status table.

4. On the point status table, press NEXT or PREVIOUS until the desired point is displayed on the screen.

 

 

 

19XR_II MAINSTAT

 

POINT STATUS

 

 

 

Control Mode

 

 

OFF

 

 

 

Run Status

 

 

Ready

 

 

 

Start Inhibit Timer

 

 

0.0 Min

 

 

 

Occupied?

 

 

 

NO

 

 

 

System Alert/Alarm

 

NORMAL

 

 

 

Chiller Start/Stop

 

 

STOP

 

 

 

 

 

 

 

 

Remote Start Contact

 

 

Open

 

 

 

Temperature Reset

 

 

0.0 F

 

 

 

Control Point

 

 

44.0 F

 

 

 

Chilled Water Temp

 

 

44.6 F

 

 

 

Active Demand Limit

100%

 

 

 

Average Line Current

0.0%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 16 — Example of Status Screen

OVERRIDE OPERATIONS

To Override a Value or Status

1.From any point status screen, press NEXT or PREVIOUS to highlight the desired value.

2.Press SELECT to select the highlighted value. Then:

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Image 16
Carrier 19XR, XRV specifications Example of Status 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.

The Carrier 19XR and 19XRV chillers also prioritize serviceability. The design incorporates easy access to key components, simplifying maintenance procedures and reducing downtime. This focus on maintainability extends the lifespan of the equipment, leading to lower lifecycle costs.

In terms of connectivity, these chillers are equipped with advanced Building Management System (BMS) integration capabilities. This allows for seamless monitoring and control of the chillers using a centralized platform, facilitating energy management and operational optimization.

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.