Ð Used to verify software version.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Ð Used to verify and change factory con®gura-

tion. Requires password entry in . See Example 7.

NOTE: When more than one unit is connected to the Carrier Comfort Network, the element address must be changed on all but one unit. The element address system default is 1, and element address numbers cannot be repeated. Element address must be changed at the local interface device.

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Example 7 Ð Reading and Changing

Factory Con®gurations

KEYBOARD

DISPLAY

COMMENTS

ENTRY

RESPONSE

 

 

FACT CFG

Factory con®guration sub-

 

function of service function

 

 

 

TYPE CV

Unit type is constant volume

 

UNIT TYPE IS CV

Explanation is scrolled across

 

screen

 

TYPE VAV

Unit type is changed to VAV

 

COOL COI

Cooling type is coil

 

DXST 2

DX cooling stage quantity is 2

 

HEAT HCL

Heating type is hot water/

 

steam coil

 

 

 

HEAT NON

Changed to no heat unit

 

HEAT ELE

Changed to electric heat

 

HEAT COI

Heating type is changed back

 

to hot water/steam coil

 

 

 

EHST 0

Electric heater stages = 0

 

EHST N

Electric heater stages = N,

 

where N = number of stages

 

 

 

MIXD ALG

Unit with mixed air dampers

 

MIXD NON

Changed to without dampers

 

IAQT 1

Indoor air quality type

 

is single gas sensor

 

 

 

MATP YES

Mixed air temperature

 

protection enabled

 

 

 

BUS 0

Bus number = 0

 

ADR 1

Element address = 1

 

ADR 2

Element address changed to 2

 

PSW XXXX

Password

 

 

 

Ð Used to change the HSIO display of the measure- ments from English to Metric. See Example 8.

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Ð Used to read or change factory con®guration of user options. See Example 9.

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Example 8 Ð Con®guration of Measurements

KEYBOARD

DISPLAY

COMMENTS

ENTRY

RESPONSE

 

 

UNIT 0

Measurements are displayed using

 

English (0 = English, 1 = Metric)

 

 

 

UNIT 1

Measurements are now displayed

 

using the Metric system

 

 

 

UNIT 0

Measurements are returned to

 

English

 

 

Example 9 Ð User Con®gurations

KEYBOARD

DISPLAY

COMMENTS

ENTRY

RESPONSE

 

 

USER CFG

User con®gurations

 

NTEN DSB

NTFC is disabled

 

NTEN EN

NTFC is enabled

 

NTEN DSB

NTFC is disabled

 

HUEN 0

Humidi®er control is none

 

HUEN 1

Unit changed to analog humidi®er

 

control

 

 

 

HUEN 0

Humidi®er control is changed back

 

to none

 

 

 

OHEN DSB

Scroll past occupied heating

 

(disabled)

 

 

 

RSEN DSB

Space temperature reset (disabled)

 

DLEN DSB

Scroll past demand limiting

 

(disabled)

 

 

 

FTEN DSB

Fan tracking (disabled)

 

OAEN DSB

Constant outside air (disabled)

 

NPEN DSB

Night purge (disabled)

 

AQEN DSB

Indoor air quality (disabled)

 

IAQP DSB

Indoor air quality priority

 

level (disabled)

 

 

 

OSEN DSB

Optimal start is disabled

 

OSEN EN

Optimal start is enabled

 

OSEN DSB

Optimal start is disabled

 

TSCH 1

Time schedule No. 1 is enabled

 

TSCH 2

Time schedule No. 2 is enabled

 

TSCH 1

Time schedule is changed back to

 

No. 2

 

 

 

TOVR 0

Time override value = 0 hrs

TOVR 1 Time override value = 1 hr

TOVR 0 Time override value = 0 hrs

NTFC Ð Nighttime Free Cooling

84

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Carrier 39L specifications Example 7 Ð Reading and Changing Factory Congurations, Example 8 Ð Conguration of Measurements

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.