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// CODE SNIPPET

407.5 Variable Air Volume

California Mechanical Code 2019 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume
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407.5.1 Variable Air Volume Systems(VAV)

Variable air volume systems subjecting the patient to a fluctuating air movement are not acceptable for airborne infection isolation rooms, protective environment rooms or those critically sensitive areas listed in Section 322.0. For nonsensitive areas, variable air volume systems meeting the following criteria can be considered:

407.5.1.1

The VAV system shall comply with code requirements for outside air, total air, and pressure relationship through the full range of operation from minimum to maximum.

407.5.1.2

The central return or exhaust fan shall be controlled to accomplish the variable air volume requirements of the individual rooms served by the fan as described in Section 407.5.1.3.

407.5.1.3

Variable air volume for return or exhaust air shall be accomplished by utilizing an automatic modulating damper in the return or exhaust air for each zone. The damper will modulate from full open to minimum position in conjunction with the supply air VAV terminal box.

Related Code Sections


407.5 Ventilation Air, Variable Air Volume
Variable air volume systems subjecting the patient to a fluctuating air movement are not acceptable for airborne infection isolation rooms ...
California Mechanical Code 2016 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume
407.5 Ventilation Air, Variable Air Volume
Variable air volume systems subjecting the patient to a fluctuating air movement are not acceptable for airborne infection isolation rooms ...
California Mechanical Code 2019 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume
407.5.1.3 Ventilation Air,
Variable air volume for return or exhaust air shall be accomplished by utilizing an automatic modulating damper in the return or exhaust air for each ...
California Mechanical Code 2019 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume > 407.5.1 Variable Air Volume Systems(VAV) > 407.5.1.3
407.5.1 Ventilation Air, Variable Air Volume Systems (VAV)
Variable air volume systems subjecting the patient to a fluctuating air movement are not acceptable for airborne infection isolation rooms ...
California Mechanical Code 2016 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume > 407.5.1 Variable Air Volume Systems (VAV)
407.5.1 Ventilation Air, Variable Air Volume Systems(VAV)
Variable air volume systems subjecting the patient to a fluctuating air movement are not acceptable for airborne infection isolation rooms ...
California Mechanical Code 2019 > 4 Ventilation Air > 407.0 Ventilation System Details > 407.5 Variable Air Volume > 407.5.1 Variable Air Volume Systems(VAV)
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