Simple Partial Bypass Installation
Simple Partial Bypass Installation for CAP600 series Installing CAP600 series units in a “partial bypass” configuration further enables the units to pull air through the highly-efficient filters without adding any appreciable load to the HVAC motor & blower. Bypass connections are made by cutting a 10-inch diameter hole into the return duct and connecting the inlet of the CAP unit to the duct with 10-inch rigid or flexible ducting.

The exhaust of the CAP unit is similarly connected into the return duct or plenum downstream from the inlet connection to complete the "bypass loop". Continuous operation of the HVAC fan and the CAP unit is recommended for maximum 24/7 air cleaning performance.