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Carrier Comprehensive Guide to Scheduling Holidays and Functions for Air Conditioners

Models: 39L

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Reading and Changing Holidays Ð Example 23 explains how to set holidays. Up to 18 holiday periods can be set for one calendar year. When the calendar year changes the holidays must be recon®gured for the new year.

Example 23 Ð Setting of Holidays

KEYBOARD

DISPLAY

COMMENTS

ENTRY

RESPONSE

 

 

HOLIDAY

Holiday ®eld con®g-

 

 

uration subfunction

 

 

of set point function

 

NEW

First holiday

 

 

con®guration

 

JUL 04 01

The ®rst holiday is

 

 

con®gured to start

 

 

Month 7 (July), day 4

 

 

(July 4) and last for

 

 

one day

 

NOV 23 02

The second holiday

 

 

is con®gured to start

 

 

Month 11 (Novem-

 

 

ber), day 23 and last

 

 

for 2 days.

SCHEDULE FUNCTION Ð Two schedules are provided with the PIC system. Schedule I automatically switches the unit from an occupied mode to an unoccupied mode. Sched- ule II automatically changes the optional discrete output from occupied to unoccupied mode.

Each schedule consists of from one to 8 occupied time periods, set by the operator. These time periods can be flagged to be in effect or not in effect on each day of the week. The day begins at 00.00 and ends at 24.00. The unit is in unoc- cupied mode unless a scheduled time period is in effect. If an occupied period is to extend past midnight, it must be programmed in the following manner: Occupied period must end at 24:00 hours (midnight); a new occupied period must be programmed to begin at 00:00 hours on the next day.

The time schedule can be overridden to keep the unit or optional discrete output in the occupied mode for 1, 2, 3, or 4 hours on a one-time basis.

The air handler can be con®gured for an applicable holiday/ shutdown schedule. This function can only be used if the PIC is connected to the Carrier Comfort Network. The net- work will send a holiday message (¯ag) to the unit on the appropriate holiday. The unit then uses the schedule that has been set for the holiday period. The unit automatically re- turns to its normal schedule after the holiday period is complete.

Figure 75 shows a Schedule I example for an office build- ing with the unit operating on a set point schedule. The schedule is based on building occupancy with 3-hour off- peak cool down period from midnight to 3 am following week- end shutdown. To learn how this sample schedule can be programmed, see Example 24. The same scheduling proce- dures can be used to set optional discrete output

Schedule II. Subfunctions through de®ne schedule of air handler (Schedule I). Subfunctions

through de®ne schedule of optional discrete output (Schedule II).

Fig. 75 Ð Schedule I Sample Time Schedule

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Carrier 39L specifications Example 23 Ð Setting of Holidays, Schedule I Sample Time Schedule
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39L specifications

The Carrier 39L is a cutting-edge air conditioning unit designed for both residential and commercial applications, providing exceptional cooling and heating performance. Equipped with advanced technologies, this system ensures optimal climate control while maintaining energy efficiency.

One of the standout features of the Carrier 39L is its inverter technology. This innovation allows the system to adjust its compressor speed based on the ambient temperature, which results in a significant reduction in energy consumption. By operating at varying capacities rather than a fixed output, the 39L can maintain a consistent temperature, enhancing comfort while lowering electricity bills.

The Carrier 39L also includes a high-efficiency air filtration system, designed to capture dust, allergens, and other airborne particles. This not only improves indoor air quality but also promotes a healthier living environment. The filtration system is complemented by anti-bacterial treatment, ensuring that the air circulated within your space is both clean and refreshing.

In terms of design, the Carrier 39L boasts a sleek and compact form factor, making it easy to integrate into various settings, from homes to offices. Its quiet operation is another notable feature, as it minimizes noise levels, allowing occupants to enjoy a serene atmosphere without disruptive sound.

Further enhancing convenience, the Carrier 39L comes equipped with smart connectivity options. Users can control the unit remotely via a smartphone app, making it easy to adjust settings, program schedules, and monitor energy usage from anywhere. This feature not only improves user experience but also supports energy-saving practices.

Durability is also a key characteristic of the Carrier 39L. Constructed with high-quality materials and coated with corrosion-resistant treatments, the unit is built to withstand various environmental conditions. This ensures long-lasting performance and reduces the need for frequent maintenance.

Overall, the Carrier 39L is a versatile, efficient, and user-friendly air conditioning solution. Its blend of advanced technologies, energy-saving capabilities, and robust design makes it an ideal choice for those seeking reliable climate control in their spaces. Whether for residential comfort or commercial necessity, the Carrier 39L stands out as a leader in modern air conditioning.