CONTROLS
ADVANCED ROOFTOP UNIT CONTROLLERS Requirements: • Complete Table E of the “HVAC Incentive Catalog Supplemental Data Sheet” for this measure.
• For the “Nominal Cooling Capacity” column, enter the manufacturer’s nominal capacity in tons to two decimal places. • For the “Fan HP” column, enter the supply fan HP. If return fan has a VFD, add return fan HP to supply fan HP for a total HP. • For the “Economizer Operational?” column, enter “Yes” or “No.”
• For the “Weekday Open/Close Times”, “Saturday Open/Close Times”, and “Sunday Open/Close Times” columns, enter the time the facility opens and the time the facility closes, and include a.m. or p.m. If the facility is closed for a specific day, note that rather than entering an open and close time. • Existing rooftop units to be controlled must be constant volume units with single speed supply fan and have direct expansion cooling with either natural gas or electric heating. Rooftop units must also have a functioning economizer, have a ≥ 1.0 HP supply fan, and have ≥ 7 nominal tons of cooling. • The existing rooftop unit must serve a space occupied (open for business) for at least 1,500 hours per year. • Advanced rooftop unit controllers must provide: • Multispeed or variable speed control of the supply fan. • Modulating outdoor air damper control to maintain proper ventilation rates according to Wisconsin Commercial Building Code under different fan speeds. • Demand control ventilation (DCV) to modulate outdoor air supplied to the building. • Integrated economizer functionality (stages on and off as needed). • Projects installing advanced rooftop unit controllers cannot also apply for the prescriptive incentives for DCV and variable frequency drives. • Incentive is available for installation of advanced rooftop unit controllers on existing units or for new replacement rooftop units on existing buildings. Advanced rooftop unit controllers are not eligible when installed on a new replacement rooftop unit if the old rooftop unit had advanced rooftop unit controls. • A list of qualified advanced rooftop unit controllers can be found on focusonenergy.com/qpls. If a proposed advanced rooftop unit controller solution is not on the qualified products list, contact Focus on Energy prior to initiating the project to confirm the solution will qualify. • Eligibility for advanced rooftop unit measure is based on customer having both an eligible electric and natural gas utility, unless applying for rooftop units with electric heat, in which case only an eligible electric utility is required. Customers with only an eligible natural gas utility or an eligible electric utility (without electric heat rooftop units) may qualify for custom incentives.
EQUIPMENT UPGRADES AND RETROFITS Measure Description
Code
Incentive
Unit
Advanced Rooftop Unit Controllers
H3964*
$90
Ton
* Supplemental Data Sheet needed
CUSTOM PROJECT IDEA Talk to your Energy Advisor about custom incentives that may be available for adjusting your schedule to reduce energy waste from better aligning equipment run time with occupied hours.
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