INLET HOOD SIDE

INLET

HOOD

SCREEN

(WITH SPEED CLIPS)

INLET HOOD

SIDE

a48-8473

Fig. 67 — Inlet Hood Assembly (30-in.)

Fig. 68 — Air Baffle (14-in.)

a48-8590

 

 

a48-8591

 

 

 

Fig. 69 — Air Baffle (30-in.)

 

 

Table 27 — SGC Thermistor Designations

 

 

PIN

FUNCTION AND LOCATION

 

THERMISTOR

CONNECTION

Thermistors

PART NO.

 

POINT

 

 

 

 

SAT1

 

Supply-Air Thermistor (SAT) — Inserted into supply section

 

J8 – 1,2 (SGC)

underneath the gas heat section (factory-provided,

 

 

 

field-installed)

 

SAT2

 

Supply-Air Thermistor (SAT) — Inserted into supply section

 

J8 – 3,4 (SGC)

underneath the gas heat section (factory-provided,

 

 

 

field-installed)

HH79NZ033

SAT3

 

Supply-Air Thermistor (SAT) — Inserted into supply section

 

J8 – 5,6 (SGC)

underneath the gas heat section (factory-provided,

 

 

 

field-installed)

 

LIMTTEMP

J8 – 15,16 (SGC)

Limit Switch Thermistor (LIMTTEMP) — Inserted next the

 

lower limit switch (factory-installed)

 

 

 

 

SGC — Staged Gas Controller

 

 

Step 20 — Install Optional Motormaster® V Control — The Motormaster V control is a motor speed control device which adjusts condenser fan motor speed in re- sponse to varying liquid refrigerant pressure. A properly applied Motormaster V control extends the operating range of air-condi- tioning systems and permits operation at lower outdoor ambient temperatures.

The optional Motormaster V controls are factory-installed. Field-fabricated and installed wind baffles are also required for units in areas with prevailing winds of more than 5 mph and where temperatures drop below 32 F. The Motormaster V con- trol permits operation of the unit to an ambient temperature of –20 F. The control regulates the speed of one or two 3-phase fan motors depending on unit size. Replacement of the fan motor on most units is not necessary.

INSTALL FIELD-FABRICATED WIND BAFFLES

On size 040-060 units, in areas with prevailing winds of more than 5 mph and where temperatures drop below 32 F, wind baffles must be field fabricated to ensure proper cooling cycle operation at low-ambient temperatures with Motormaster V controls. Wind baffles are not needed on size 030, 035, and 070-100 units. See Fig. 70 for baffle details. Use 20-gage galva- nized sheet metal, or similar corrosion-resistant material for the baffles. Use field-supplied screws to attach baffles to unit. Screws should be 1/4-in. diameter or larger. Screws should not be more than 1/2-inch in length. Drill required screw holes for mounting baffles.

CAUTION

To avoid damage to refrigerant coils, electrical compo- nents, and wiring use extreme care when drilling screw holes and screwing in fasteners.

WARNING

To avoid the possibility of electrical shock, open all discon- nects before installing or servicing this accessory.

66

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Carrier 48P2, P5030-100, P3, P4 installation instructions Inlet Hood Assembly 30-in
Page 65 Page 67

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.
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