Table 2 Ð LID Screens (cont)

EXAMPLE 12 Ð MAINTENANCE (MAINT03) DISPLAY SCREEN

To access this display from the LID default screen:

1.Press MENU .

2.Press SERVICE .

3.Scroll down to highlight CONTROL ALGORITHM STATUS.

4.Press SELECT .

5.Scroll down to highlight MAINT03.

6.Press SELECT .

DESCRIPTION

RANGE/STATUS

UNITS

REFERENCE POINT NAME

SURGE/HGBP ACTIVE ?

NO/YES

 

 

 

 

 

 

Active Delta P

0-200

(0-1379)

PSI (kPa)

dp

 

 

a

 

 

Active Delta T

0-200

(0-111)

DEG F (DEG C)

dt

 

a

Calculated Delta T

0-200

(0-111)

DEG F (DEG C)

dt

 

c

 

Surge Protection Counts

0-12

 

 

spc

 

 

 

 

 

 

 

 

 

 

 

NOTE: Override is not supported on this maintenance screen. Only values with capital letter reference point names are variables available for read operation.

EXAMPLE 13 Ð MAINTENANCE (MAINT04 DISPLAY SCREEN

To access this display from the LID default screen:

1.Press MENU .

2.Press SERVICE .

3.Scroll down to highlight CONTROL ALGORITHM STATUS.

4.Press SELECT .

5.Scroll down to highlight MAINT04.

6.Press SELECT .

DESCRIPTION

RANGE/STATUS

UNITS

REFERENCE POINT NAME

LEAD/LAG: Con®guration

DISABLE,LEAD,LAG,STANDBY, INVALID

 

leadlag

 

Current Mode

DISABLE,LEAD,LAG,STANDBY, CONFIG

 

llmode

 

Load Balance Option

DISABLE/ENABLE

 

loadbal

 

LAG Start Time

0-60

MIN

lagstart

 

LAG Stop Time

0-60

MIN

lagstop

 

Prestart Fault Time

0-30

MIN

pre¯t

 

Pulldown: Delta T/Min

2-10 F/min (1.1-5.5 C/min)

D DEG F/min

pull

 

 

 

 

dt

 

Satis®ed?

No/Yes

(D DEG C/min)

pull

 

 

 

sat

 

 

 

 

 

LEAD CHILLER in Control

No/Yes

 

leadctrl

 

LAG CHILLER: Mode

Reset,Off,Local,CCN

 

lagmode

 

Run Status

Timeout,Recycle,Startup,Ramping,Running

 

lagstat

 

Start/Stop

Demand,Override,Shutdown,Abnormal,Pumpdown

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop,Start,Retain

 

lag

 

 

 

 

s

 

 

 

s

Recovery Start Request

No/Yes

 

lag

 

 

 

 

rec

 

 

 

 

 

 

STANDBY CHILLER: Mode

Reset,Off,Local,CCN

 

stdmode

 

Run Status

Timeout,Recycle,Startup,Ramping,Running

 

stdstat

 

 

Demand,Override,Shutdown,Abnormal,Pumpdown

 

 

Start/Stop

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop,Start,Retain

 

std

 

 

 

s

 

s

Recovery Start Request

No/Yes

 

std

 

 

 

rec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTES:

1.Only values with capital letter reference point names are variables available for read operation. Forcing is not supported on this maintenance screen.

2.The MAINT04 screen is available on PSIO Software Version 09 and higher.

3.D = delta degrees.

27

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Image 27
Carrier 19XL Example 12 Ð Maintenance MAINT03 Display Screen, Example 13 Ð Maintenance MAINT04 Display Screen
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19XL specifications

The Carrier 19XL is a highly regarded commercial heating and cooling solution, designed to provide optimum performance and energy efficiency in various applications. This rooftop unit is engineered to meet the diverse needs of businesses, making it an ideal choice for those requiring reliable climate control in their facilities.

One of the standout features of the Carrier 19XL is its advanced cooling and heating capabilities. The unit utilizes a high-efficiency scroll compressor that ensures a quieter operation and improved reliability. The system can operate across a wide range of temperatures, making it versatile for various climates. Additionally, it offers both cooling and heating options, allowing for year-round comfort.

Energy efficiency is a focal point of the 19XL design. With an impressive Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), this unit not only helps reduce energy costs but also supports environmental sustainability initiatives. The unit is equipped with environmentally friendly refrigerants, further contributing to lower greenhouse gas emissions.

The Carrier 19XL features a user-friendly control system, allowing for easy monitoring and management of the unit's performance. This control system is designed to maximize energy savings, offering features such as demand control ventilation and integrated economizers that facilitate the use of outdoor air for cooling, reducing reliance on mechanical systems when conditions allow.

Construction-wise, the Carrier 19XL is built to withstand tough environmental conditions. Its robust cabinet is made from galvanized steel, providing durability and protection against the elements. The design also includes insulation to minimize noise levels, creating a more comfortable indoor environment.

Maintenance is a key consideration in the design of the 19XL. The unit features accessible service ports and a simplified access panel, allowing technicians to perform routine maintenance with ease. This proactive design helps ensure the longevity of the system and minimizes downtime, keeping operations running smoothly.

In summary, the Carrier 19XL is an exceptional choice for commercial heating and cooling needs. With its energy-efficient features, advanced technology, and durable construction, it stands out as a reliable solution for businesses looking for sustainable climate control options.
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