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Terra AC modules maintain the narrow temperature range required by garbed personnel and sensitive equipment inside a BioSafe® modular cleanroom.
Several configurations are available, with return air recirculated through Vertical Air Return modules mounted outside the cleanroom or directly through the BioSafe® cleanroom panels.
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| Features Key |
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Standard |
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Option |
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Photo Above:
Powder-Coated Steel BioSafe® Cleanroom with |
| A |
Dual Air Conditioning Modules (No. 6704-32) |
| B |
Custom Vertical Air Returns |
| C |
Ceiling Plenum (containing fan/filter units) |
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Ductless Applications:
Air Conditioning with a Ceiling Plenum
In very large BioSafe® structures, Terra recommends an insulated ceiling plenum, which provides cooled return air to the fan/filter units.
Air conditioning modules are mounted to air returns, which direct cooled air upward to the plenum. Depending on the number of fan/filter units (FFUs) being serviced, additional Vertical Air Return modules may be required to ensure ample recirculated air supply to the FFUs. Adjustable baffles on the A/C modules allow some fresh make-up air to enter the system.
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| A/C Module mounted to return plenum, which directs cooled air to the ceiling plenum. Shown with optional UV sterilization module (cover removed), which kills microbes in the air stream |
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| A/C Modules (more information) |
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Vertical Air Returns |
| Net BTUH |
Capacity
tons |
KW |
AC Control Only |
AC and RH Control |
| Cat. # |
Cat. # |
| 18,000 |
1.5
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8 |
6704-27 |
— |
| 48,000 |
4
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10 |
6704-28 |
6704-31 |
| 57,000 |
5
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10 |
6704-29 |
6704-32 |
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Services up to # FFUs
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Cat. # |
For Cleanrooms up to
7’ (2134 mm) high |
6601-10-HC/HE |
For Cleanrooms over
7’ (2134 mm) high |
6601-11-HC/HE |
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Ducted Applications:
Air Conditioning without a Ceiling Plenum
In these structures, cooled air directed from the A/C module upward through an air return module (included with the A/C unit). This air return attaches to ductwork that feeds the Fan/Filter Units (FFUs) positioned on the cleanroom ceiling. A single A/C module can typically feed up to six FFUs.
Additional FFUs are typically fed air recirculated from the cleanroom through Vertical Air Returns, as shown in the illustration above.
Depending on the number of fan/filter units (FFUs) being serviced, additional A/C or Vertical Air Return modules may be required. Adjustable baffles on the A/C modules allow some fresh make-up air to enter the system.
Each FFU requires an FFU Connect pack, which includes all hardware required to connect and seal the duct.
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| A/C Module mounted to return plenum, with cooled air ducted to fan/filter units. |
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Air Conditioning Modules with Air Returns
See above.
Vertical Air Returns
See above.
| FFU Connect Packs |
Cat. # |
For Cleanrooms up to
9’ (2743 mm) high |
6601-09 |
For Cleanrooms over
9’ (2743 mm) high |
6601-01 |
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| Air handlers ventilate cleanroom air either to the ceiling plenum or the external environment (as shown in illustration) |
High-Volume Air Handlers
Air handlers allow precise adjustment of pressure inside a cleanroom by ventilating air either into the ceiling plenum or to the external environment. By removing the right volume of air, this equipment creates a net negative pressure inside the cleanroom, as required in BSL-2 and other applications involving potentially hazardous materials.
Call Terra to discuss your application. Because they often involve potential bio-hazards, negative-pressure cleanrooms require careful engineering to ensure the proper ventilation volume, exit air filtration, and system seals.
More information on High-Volume Air Handlers.
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| Double-wall BioSafe® Panels accommodate electrical and gas utilities, insulation, air returns |
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| Related BioSafe® Pages |
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