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6.6202.8 Replacement of Conventional Fans with Electrically Commutated Motor-Driven Fans

Topic:

Whole Building Ventilation

Subtopic:

Components

For supporting material, see Building America Solution Center.

Desired Outcome:

Improved fan efficiency and control

Multifamily Homes

	Title	Specification(s)	Objective(s)
	6.6202.8a Evaluate existing fans, motors, and ventilation system	Control strategy will be determined (e.g., manually adjusted motor-mounted speed control, manually adjusted remote speed control, static pressure sensor control)	Ensure existing ventilation system is compatible with electrically commutated motor (ECM) operation
	6.6202.8b Check for presence of asbestos-containing materials (ACMs)	Potential ACMs will be handled in accordance with SWS 2.0110.2 Potential Asbestos-Containing Materials	Ensure safe work environment
	6.6202.8c Remove and replace existing fan with ECM fan	Existing fan will be removed and replaced with ECM fan, installed in accordance with manufacturer specifications	Ensure proper operation of ECM fan
	6.6202.8d Install required sensors to implement ECM control strategy (for sensor controlled strategies)	Feedback sensors will be installed in accordance with manufacturer specifications at locations that will optimize chosen control strategy Feedback sensors will be wired to ECM in accordance with manufacturer specifications	Ensure sensors are installed to optimize ECM operation
	6.6202.8e Install required manual controls to implement ECM control strategy (for sensor and/or manual controlled strategies)	Speed controls will be installed in accordance with manufacturer specifications at a location optimized for ease of continued operation	Ensure manual controls are installed to optimize ECM operation, and for ease of installer and continuous operation
	6.6202.8f Restore power supply to variable frequency drive, and verify operation of ECM and fan	Power supply will be restored ECM will be shown to be capable of operating the fan ECM will be shown to be capable of receiving sensor signals, when applicable	Ensure that ECM is ready for setup
	6.6202.8g Initial setup of ECM	ECM parameters will be set up to accept feedback from sensors dependent upon chosen control strategy System will be optimized to ensure targeted design ventilation rates at the lowest possible speed setting	Achieve targeted design ventilation requirements with reduced electrical energy use