LIMIT

SWITCH

NO. 2

FLUE OUTLET

SECTION 2

GAS VALVE

FLUE

OUTLET

SECTION 1

GAS VALVE

LIMIT

SWITCH

NO. 1

NOTE: High heat consists of sections 1 and 2. Low heat consists of section 1 only.

030-050 SIZES

LIMIT

SWITCH

NO. 1

FLUE

FLUEOUTLET OUTLET

SECTION 2

SECTION 1

GAS VALVE

GAS VALVE

LIMIT

SWITCH

NO. 2

NOTE: High heat consists of sections 1-3. Low heat consists of sections 1 and 2 only.

055-100 SIZES LOW HEAT

 

Fig. 1 — Heat Section Details

a48-8445a

a48-8445b

LIMIT

SWITCH

NO. 1

FLUE

OUTLET

SECTION 2

GAS VALVE

FLUE

FLUEOUTLET OUTLET

SECTION 3

SECTION 1

GAS VALVE

GAS VALVE

 

LIMIT

SWITCH

NO. 2

10.Using the scrolling marquee, enable the unit to run using the following procedure:

a.Push the ESCAPE key unit a blank display screen is shown.

b.Push the key until the SERVICE TEST LED is lit.

c.Push the ENTER key. The display will show STOP.

d.Push the ENTER key again. The NO/YES display will flash.

e.Push the or key to toggle the display to NO

and then push ENTER . The unit will return to

normal operation and exit SERVICE TEST mode.

11.To test the operation of the gas section, use the scrolling marquee Service Test routine to energize the gas outputs and to turn on the gas. Refer to the unit Controls, Start- Up, Operation, Service and Troubleshooting literature for more information.

12.For normal operation, make sure that units with a conven- tional thermostat are set to heating control temperature. On VAV (variable air volume) and constant volume units with a space temperature sensor, make sure that the set points are at the normal heat set points.

NOTE: High heat consists of sections 1-3. Low heat consists of sections 1 and 2 only.

055-100 SIZES HIGH HEAT

Fig. 1 — Heat Section Details (cont)

a48-8446

WARNING

If the main burners fail to light or the blower fails to start, shut down gas heating section and call your dealer for ser- vice. Failure to follow these requirements could result in serious personal injury.

2

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Carrier 48P2, P5030-100, P3, P4 specifications A48-8445a A48-8445b, A48-8446

P4, 48P2, P3, P5030-100 specifications

Carrier, a leader in the HVAC industry, offers a range of advanced air conditioning systems designed to provide optimal indoor climate control. Among their innovative products are the Carrier P4, P5030-100, P3, and 48P2 models, each delivering unique features tailored to diverse applications.

The Carrier P4 series is engineered for versatility and efficiency. This compact unit integrates advanced inverter technology, allowing for precise temperature control and reduced energy consumption. The P4 employs a variable speed compressor, which adjusts according to cooling needs, ensuring both comfort and energy savings. Additionally, it features a user-friendly interface with smart connectivity options, enabling remote access and management via smartphones.

Next in line, the Carrier P5030-100 model is designed with commercial applications in mind. It is equipped with a robust scroll compressor and advanced heat exchange technology that enhances its performance and efficiency. The P5030-100 operates quietly, making it ideal for office environments where noise reduction is a priority. Furthermore, its eco-friendly refrigerant aligns with today’s environmental standards, further making it a sustainable choice for businesses.

The Carrier P3 model excels in energy efficiency, boasting top SEER ratings while maintaining powerful cooling and heating capabilities. This model incorporates advanced refrigerant management, which minimizes environmental impact while ensuring optimal performance. Its compact design makes it an excellent choice for residential installations, providing homeowners with an unobtrusive yet effective climate control solution.

Finally, the Carrier 48P2 unit stands out with its robust design tailored for large-scale applications. It features a high-capacity scroll compressor and enhanced airflow capabilities, ensuring consistent and reliable performance across various conditions. The 48P2 comes equipped with a comprehensive control system that allows for integration with building management systems, facilitating easy monitoring and control of multiple units. This model is ideal for commercial buildings that demand high performance and energy efficiency.

Overall, Carrier's P4, P5030-100, P3, and 48P2 models represent the forefront of HVAC technology, combining efficiency, reliability, and advanced features to meet the varying demands of both residential and commercial environments. With a commitment to innovation and sustainability, Carrier continues to provide solutions that enhance indoor comfort while reducing environmental impact.