Ulta-Efficient Fan Coil Units
5 Factors to Consider when Selecting a Horizontal Fan Coil
Chilled water fan coils, ranging from 200-4,000 CFM, serve diverse applications with various commercially available product types. Choosing the ideal product amidst these options can be challenging. The two primary configurations are vertical and horizontal, with horizontal units typically situated above ceilings, while vertical units are installed within closets or exposed within rooms. The decision between vertical and horizontal configurations is typically made during the building design phase. However, selecting the appropriate horizontal product for a specific application necessitates a comprehensive understanding of the available types.
Horizontal Fan Coils: Exploring Options and Accessories
While the fundamental components of a chilled water fan coil comprise a fan and a coil, additional options and accessories can enhance the design. These may include mixing boxes, outside air inlets, hot water/electric heat, silencer/attenuators, and filters, among others. Five key factors influence the selection of a fan coil for a particular application:
1. Capacity Requirements
2. External Static Pressure
3. Available Ceiling Space
4. Sound Sensitivity
5. Outside Air Capabilities
We offer three types of horizontal units: low-profile in-room, high-capacity horizontal, and low-profile high-capacity units. The choice between these options hinges upon the aforementioned five factors.
Low-Profile In-Room Horizontal Fan Coils
These compact fan coils are commonly utilized in hospitality settings, positioned above entry corridors to supply air directly to bedroom areas. Four types are available: free return, plenum, telescoping, and exposed. For the variables mentioned:
– Capacity Requirements: 300-1,500 CFM; 2/3-3.5 Tons Cooling; 9-73 MBH Hot Water Heating; 1-10 KW Electric Heating. – External Static Pressure: Low, up to 0.5″ w.g. – Available Ceiling Space: Concealed Units – 10″; Exposed Units – 12″. – Sound Sensitivity: Medium. – Outside Air Capabilities: Low, limited to 4 rows of cooling coil.
These units are suitable for applications where direct supply to intended rooms is required, especially where ceiling space is limited. However, their small fan size may limit their effectiveness over long duct runs.
High-Capacity Horizontal Fan Coil Units
These larger units offer more versatility and are suitable for various applications including classrooms, office spaces, conference rooms, and industrial spaces. The summary of their specifications is as follows:
– Capacity Requirements: 400-4,000 CFM; 1-10 Tons Cooling; 20-200 MBH Hot Water Heating; 1-16 KW Electric Heating. – External Static Pressure: High, up to 0.75″ w.g. – Available Ceiling Space: Sizes 4-24 – 17″; Sizes 30-40 – 23″. – Sound Sensitivity: Low, with Radiated NC 45 and lower. – Outside Air Capabilities: Medium, with up to 6 rows of cooling coils and higher latent load capabilities.
These units offer enhanced capacity and flexibility, making them suitable for various applications requiring higher airflow and cooling capacities.
Low-Profile High-Capacity Units:
This subset of high-capacity horizontal units offers a blend of characteristics from the aforementioned types. They are particularly useful in applications with limited ceiling space but requiring higher static pressures or cooling capacities.
– Capacity Requirements: 100-1,400 CFM; 2/3-5 Tons Cooling; 12-80 MBH Hot Water Heating; 1-8 KW Electric Heating. – External Static Pressure: High, up to 0.75″ w.g. (Pressure independent motors standard). – Available Ceiling Space: 11″. – Sound Sensitivity: Low, with Radiated NC 45 and lower. – Outside Air Capabilities: Medium, with up to 6 rows of cooling coils and higher latent load capabilities.
These units are ideal for scenarios where space constraints necessitate a compact yet powerful solution.
Selection Process:
Our SelectWorks software facilitates the selection process by allowing users to input required capacities, airflows, and design conditions. The software then presents suitable options meeting the project’s needs. Should you require assistance with product selection or design considerations for your project, please feel free to contact us.