Honeywell TrueZONE HZ311, HZ322, HZ432 Manual 

Also see for TrueZONE HZ311: Installation guide

Contents

Honeywell TrueZONE HZ311, HZ322, HZ432 Manual  Manual pdf 10 page image

Zoning System Design Manual70-2321—03 10retrofIt aPPlIcatIonsFor retrofit applications, first you have to ensure that the duct system is adequate for room/zone loads, and thatthe existing HVAC system is properly sized to deliver heat/cool. After that, planning the zone system is very similarto new construction.Flex DuctFor retrofit applications in flex duct, use round ARD dampers. The round ARD is a galvanized steel single bladedamper with a low-leakage gasket, and comes in a range of sizes from 5–20 in. You can use multiple ARDs on anyduct—just wire them in parallel.ThermostatsThe existing thermostat can often be used for one zone, but as it might be difficult to run wires to the other zones,Honeywell wireless thermostats can be used.Rigid Duct, Rectangular Sheet Metal Duct, Knockdown (KD) DuctUsing a retrofit round damper (RRD) significantly reduceslabor—it installs in a fraction of the time—and overall systeminstallation cost. A retrofit damper slides into rigid round pipefor quick installation.Honeywell offers dampers for rigid round duct in 5-, 6-, 7-, and8-in. diameters. Multiple RRD dampers may be wired in parallel.M28119Fig. 8. Installing retrofit round damper.

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