7.Press ENTER to register the values and to move hori- zontally (left to right) within a period.

8.Press EXIT to leave the period or override.

9.Either return to Step 4 to select another period or over- ride, or press EXIT again to leave the current time schedule screen and save the changes.

10.The Holiday Designation (HOLIDEF table) may be found in the Service Operation section, page 45. The month, day, and duration for the holiday must be assigned. The Broadcast function in the BRODEF table also must be enabled for holiday periods to function.

TO VIEW AND CHANGE SET POINTS (Fig. 20)

1.To view the SETPOINT table, from the MENU screen press SETPOINT .

 

 

 

19XR_II

SETPOINT

SETPOINT SELECT

 

 

 

Base Demand Limit

100%

 

 

 

Control Point

 

 

 

 

 

 

 

 

LCW Setpoint

 

 

50.0 F

 

 

 

ECW Setpoint

 

 

60.0 F

 

 

 

ICE BUILD Setpoint

 

 

40.0 F

 

 

 

Tower Fan High Setpoint

 

 

85.0 F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 20 — Example of Set Point Screen

2.There are 5 set points on this screen: BASE DEMAND LIMIT, LCW SETPOINT (leaving chilled water set point), ECW SETPOINT (entering chilled water set point), ICE BUILD SETPOINT, and TOWER FAN HIGH SETPOINT. Only one of the chilled water set points can be active at one time. The set point that is active is determined from the SERVICE menu. See the Service Operation section, page 45. The ice build (ICE BUILD) function is also activated and configured from the SERVICE menu.

3.Press NEXT or PREVIOUS to highlight the desired set point entry.

4.Press SELECT to modify the highlighted set point.

5.Press INCREASE or DECREASE to change the select- ed set point value.

6.Press ENTER to save the changes and return to the pre- vious screen.

SERVICE OPERATION — To view the menu-driven pro- grams available for Service Operation, see Service Operation section, page 45. For examples of CVC/ICVC display screens, see Table 2.

21

Page 20 Page 22
Page 21
Image 21
Carrier XRV, 19XR specifications Example of Set Point Screen
Page 20 Page 22

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.
Top Page Image Contents