Decoding the Carrier Chilled Water Coil Model 28NC
Reading coil model numbers might seem like a necessary part of the job, but it doesn’t have to be confusing. In this post, we’ll break down the Carrier Chilled Water Coil model 28NC, specifically the upper coil model 28NC2022FGA207AL, and explain what each part means.
Carrier chilled water coils are commonly found in air handlers like the 39N and 39T models. Understanding the model number is essential for accurate quoting and replacement. Let’s take a closer look at the breakdown of 28NC2022FGA207AL:
28NC – This prefix identifies the coil as a chilled water unit.
2 – Indicates that the coil is installed vertically and has no coating. If there was a letter here, it would suggest a protective coating, such as a baked phenolic or Heresite® finish.
0 – Represents the number of rows in the coil. A “0†stands for 10 rows, which is common in higher-performance units.
22 – Shows the number of tubes in the coil face. For standard ½†tubes, this number also corresponds to the finned height. In this case, 22 tubes mean the coil is 27.5 inches tall. Always verify with measurements, as some units may use 5/8†tubes.
F – Refers to the circuiting type: “F†stands for full circuit, meaning all tubes are connected to both supply and return headers.
G – Provides key details about the coil: fin material (copper), casing material (stainless steel), and fin density (8 fins per inch). Different letters can represent other combinations, so it's always good to double-check.
A – Indicates the tube wall thickness. Here, “A†means a copper tube with a 0.017-inch wall thickness, which is standard for many applications.
207 – This three-digit number represents the finned length. While it appears in centimeters, converting it to inches gives us approximately 81.5 inches.
A – Specifies the type of connection. In this case, “A†means a steel MPT (male pipe thread) connection. Always confirm the size with physical measurement.
L – Indicates the direction of airflow. “L†means left-hand airflow, while “R†would mean right-hand airflow.
As you can see, each part of the model number provides critical information about the coil’s specifications. With hundreds of possible combinations, decoding these numbers can be complex. If you’re ever unsure, don’t hesitate to reach out to HVAC experts who specialize in Carrier products.
Stay tuned for our next article, where we’ll decode another common Carrier chilled water coil model: 28CW1620DA1112---K.
The Nationwide Coils Blog is written by industry professionals with nearly two decades of experience in commercial HVAC. We provide practical insights into HVAC products and services and welcome your questions anytime. Feel free to email us with any inquiries.
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