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// CODE SNIPPET

N1103.6 (R403.6) Mechanical Ventilation (Mandatory)

Residential Code 2018 of Kansas > 11 [RE] Energy Efficiency > N1103 (R403) Systems > N1103.6 (R403.6) Mechanical Ventilation (Mandatory)
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The building shall be provided with ventilation that complies with the requirements of Section M1505 or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.

N1103.6.1 (R403.6.1) Whole-House Mechanical Ventilation System Fan Efficacy

Fans used to provide whole-house mechanical ventilation shall meet the efficacy requirements of Table N1103.6.1.
Exception: Where an air handler that is integral to tested and listed HVAC equipment is used to provide whole-house mechanical ventilation, the air handler shall be powered by an electronically commutated motor.
TABLE N1103.6.1 (R403.6.1)
WHOLE-HOUSE MECHANICAL VENTILATION SYSTEM FAN EFFICACYa
FAN LOCATIONAIR FLOW RATE MINIMUM
(CFM)
MINIMUM EFFICACY
(CFM/WATT)
AIR FLOW RATE MAXIMUM
(CFM)
HRV or ERVAny1.2 cfm/wattAny
Range hoodsAny2.8 cfm/wattAny
In-line fanAny2.8 cfm/wattAny
Bathroom, utility room101.4 cfm/watt< 90
Bathroom, utility room902.8 cfm/wattAny
For SI: 1 cubic foot per minute = 28.3 L/min.
  1. When tested in accordance with HVI Standard 916.

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