356214-XIM-A-0108

Start the supply air blower motor. Adjust the resis- tances in both the supply and the return air duct sys- tems to balance the air distribution throughout the conditioned space. The job specifications may require that this balancing be done by someone other than the equipment installer.

To check the supply air CFM after the initial balancing has been completed:

1.Remove the two 5/16" dot plugs from the blower motor and the filter access panels shown in the Dimensions and Clearances Figure 13.

2.Insert at least 8" of 1/4 inch tubing into each of these holes for sufficient penetration into the air flow on both sides of the indoor coil.

NOTE: The tubes must be inserted and held in a posi- tion perpendicular to the air flow so that veloc- ity pressure will not affect the static pressure readings.

3.Using an inclined manometer, determine the pres- sure drop across a dry evaporator coil. Since the moisture on an evaporator coil may vary greatly,

measuring the pressure drop across a wet coil under field conditions would be inaccurate. To assure a dry coil, the compressors should be deac- tivated while the test is being run.

4.Knowing the pressure drop across a dry coil, the actual CFM through the unit can be determined from the curve in Pressure Drop vs. Supply Air CFM Figure 18.

Failure to properly adjust the total system air quantity can result in extensive blower dam- age.

After readings have been obtained, remove the tubes and reinstall the two 5/16" dot plugs that were removed in Step 1.

NOTE: DE-ENERGIZE THE COMPRESSORS BEFORE TAKING ANY TEST MEASURE- MENTS TO ASSURE A DRY INDOOR COIL.

 

0.65

 

 

 

 

 

 

 

 

 

(IWG)

0.6

180 MBH

 

 

240 MBH

 

 

300 MBH

 

 

0.55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DROP

0.5

 

 

 

 

 

 

 

 

 

0.45

 

 

 

 

 

 

 

 

 

PRESSURE

 

 

 

 

 

 

 

 

 

0.4

 

 

 

 

 

 

 

 

 

0.35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.3

 

 

 

 

 

 

 

 

 

 

0.25

 

 

 

 

 

 

 

 

 

 

4

5

6

7

8

9

10

11

12

13

NOMINAL CFM (THOUSANDS) SUPPLY AIR

FIGURE 18 - PRESSURE DROP ACROSS A DRY INDOOR COIL VS SUPPLY AIR CFM FOR ALL UNIT TONNAGES

Johnson Controls Unitary Products

35

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Sunlife Enterprises DM180, DM300, DM240 installation manual Iwg, Drop Pressure Nominal CFM Thousands Supply AIR
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DM300, DM240, DM180 specifications

Sunlife Enterprises has made significant strides in the competitive market of digital management tools with their innovative lineup of products: the DM240, DM300, and DM180. Each of these devices has been engineered to cater to specific operational needs while sharing a common foundation of advanced technology, versatility, and user-centric design.

The DM240 is an entry-level model that caters to small businesses looking for an efficient digital management solution without the hefty price tag. With a compact design and intuitive user interface, the DM240 allows for seamless integration into various work environments. Key features include a high-resolution touchscreen display, which facilitates easy navigation and quick access to essential functions. The device supports wireless connectivity options, ensuring users can manage tasks from anywhere within their operating environment. The energy-efficient design of the DM240 also promotes sustainability without compromising performance.

Moving up the line, the DM300 offers enhanced capabilities for medium-sized enterprises. This model is powered by advanced processing technology, allowing for faster data handling and superior multitasking. The DM300 features expanded memory and storage options, ensuring that users can manage larger datasets effortlessly. Additionally, with built-in advanced security features like biometric authentication and encrypted data storage, businesses can ensure that sensitive information remains protected. The intuitive software interface of the DM300 is designed for ease of use while providing advanced analytics tools to enable users to make data-driven decisions.

At the top of the range is the DM180, a sophisticated solution tailored to large organizations with complex digital management needs. The DM180 showcases a state-of-the-art design with high-performance computing capabilities. It features an expansive multi-touch display, allowing multiple users to interact simultaneously, facilitating collaboration and teamwork. The DM180 is equipped with cloud integration options, promoting real-time data access and sharing among teams, regardless of location. Its scalability ensures that businesses can adapt the system to accommodate growth without compromising functionality. Moreover, it offers comprehensive reporting and analytics tools, empowering organizations to gain valuable insights into their operations.

In summary, Sunlife Enterprises’ DM240, DM300, and DM180 models stand out for their unique features designed to meet the evolving needs of businesses. With a focus on user experience, performance, and security, these devices are poised to help organizations enhance productivity and drive innovation in the digital management landscape.
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