SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION

SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION

Fig. 34 — Space Temperature Averaging Wiring

TB2

2

HIR

BASE BOARD

T30

Fig. 35 — Field HIR (Heat Interlock Relay) Wiring

Step 10 — Make Outdoor-Air Inlet Adjustments

ECONOMIZER

NOTE: If accessory power exhaust or barometric relief pack- ages are being added to the unit, install power exhaust or baro- metric relief before installing economizer hoods.

Economizer Hood Assembly — The economizer hood is shipped in a package secured to the outside of the unit, behind the indoor access panel. The hood assemblies must be field- assembled. The 48AW,AY and 48EW,EY units are side supply and side return. The return duct limits access to economizer fil- ters from below. Filter tracks (mounting angle without tabs) must be installed correctly to allow access to economizer filters from each side.

The 48AJ,AK,AW,AY020-050 and 48EJ,EK,EW,EY024- 048 units have two hoods on every unit. Each hood has two lower filter tracks, one slotted side and one side without slots. Construct the assembly so that the slotted side is adjacent to the other hood when mounted on the unit.

The 48AJ,AK,AW,AY060 and 48EJ,EK,EW,EY054-068 units have 3 hoods on every unit. Each hood has two lower fil- ter tracks, one slotted side and one side without slots. Construct the two outer hood assemblies so that the slotted sides are adja- cent to the center hood when mounted on the unit.

NOTE: Before assembly of the economizer hood, check along the outer edges of the economizer assembly for any seal strip protruding past the flanges. Trim the excess seal strip so that it is flush with the economizer assembly flanges.

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Carrier 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK Make Outdoor-Air Inlet Adjustments, Space Temperature Averaging Wiring

48EJ, 48AJ, 48AK, 48EK, 48AY020-060 specifications

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 are cutting-edge rooftop air conditioning units designed for commercial applications. These models are renowned for their reliability, energy efficiency, and innovative technologies aimed at providing optimal indoor comfort.

One of the standout features of these units is their advanced cooling and heating capabilities. They employ a multi-stage compressor system that allows for precise temperature control, accommodating various load requirements. This flexibility is particularly beneficial in commercial settings where the cooling load can fluctuate throughout the day.

Energy efficiency is paramount in today’s environmental landscape, and Carrier has ensured that these models meet stringent efficiency standards. They incorporate high-efficiency scroll compressors, which significantly reduce energy consumption while delivering powerful performance. The units are also equipped with variable speed fans that adjust airflow based on demand, further optimizing energy use.

In terms of construction, these rooftop units feature a robust design that enhances durability and longevity. The cabinet is constructed to withstand harsh weather conditions, ensuring reliable performance year-round. Additionally, the units are equipped with corrosion-resistant coatings, particularly useful in coastal environments where salt exposure can be a concern.

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY models utilize advanced controls and connectivity features, allowing for easy integration into building management systems. This connectivity enables remote monitoring and control, facilitating quick response to changing conditions and simplifying maintenance tasks.

Noise reduction is another key characteristic of these models. They are designed with sound-absorbing insulation and low-noise fan blades to ensure quiet operation, making them suitable for noise-sensitive environments such as schools and hospitals.

These units are also available with various options for air filtration and dehumidification. The use of high-efficiency air filters enhances indoor air quality by trapping dust, pollen, and other airborne particles. Enhanced dehumidification capabilities ensure that spaces remain comfortable even in humid conditions.

In conclusion, the Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 rooftop units are engineered to offer exceptional performance, energy efficiency, and durability. With their advanced technologies and user-friendly features, they stand out as reliable solutions for meeting diverse commercial cooling and heating needs, making them a popular choice for many businesses.