The new Hi-Velocity Pulse Width Modulation (PWM) Control is unique in the SDHV industry because it is a true “Energy Saving Zoning Control System”. The PWM controller is pressure reactive and will change the energy input to maintain constant CFM flow of open outlets from 150cfm to 1250cfm, eliminating the need for by-pass dampers. The PWM controller has three independent settings for Cooling, Heating and Recirc. Fan, allowing for fine tuning with variable commands. The PWM unit is compatible with most forced air zoning packages and has been successfully integrated with Inverter Drive Heat Pump Condensing Units, providing leading edge technology for unsurpassed comfort and energy efficiency.

Unsurpassed Energy Efficiency

• Reduced energy usage with reduced airflow

• Dump zones, by-pass dampers not required, no energy penalty because of zoning

• With power draws of 120 watts/ton or .48 watts/cfm for cooling, .34 watts/cfm heating and .23 watts/cfm for recirculation fan

Unique in the HVAC Industry

• Multi-zone capabilities

• Combines Inverter Drive Technology with Pulse Width Modulation

• Only draws the watts required for zones that are open

• Easy field upgrade/change-over

Indoor Air Quality (IAQ)

• With recirculation fan, IAQ concerns are addressed, providing filtration, humidity control, fresh air make-up and other IAQ concerns 24/7

“Set it and Forget it” Programming

• Field programming for Cooling, Heating, and Recirculation is Standard

• Mass flow programming will adjust power input for varying field conditions, for maximum power efficiency

• Automatically adjusts to maintain constant pressure, for equal air on open zones, from 5 tons down to 1/2 ton, without extra controls or wiring

• Most Forced Air Zone Control Kits. Zoning control panels with a Recirculation Fan option are strongly recommended, so as to utilize continuous air circulation for optimal Indoor Air Quality (IAQ) and Energy Efficiency

• Inverter Drive Condensing Units

• High Efficiency Air Filters