Honeywell TrueZONE HZ311, HZ322, HZ432 Manual 

Also see for TrueZONE HZ311: Installation guide

Contents

Honeywell TrueZONE HZ311, HZ322, HZ432 Manual  Manual pdf 7 page image

Zoning System Design Manual7 70-2321—03ROOF TOP EQUIPMENTDISCHARGE AIRTEMPERATURE SENSOR (DATS)THE DATS MUST BE LOCATED SO THATIT CAN PROPERLY SENSE THE LEAVINGAIR TEMPERATURE.NOTE: MOUNTING THE DATS TOO CLOSETO THE HEAT EXCHANGER OR EVAPORATORCOIL WILL CAUSE EXCESSIVE CYCLING OFTHE SYSTEM AND RESULT IN DISCOMFORTFOR THE BUILDING OCCUPANTS.M28055UP FLOWHORIZONTALFig. 4. DATS mounting locations.ByPass damPers and datsAlternative Bypass MethodsIf there is no space for bypass ductwork, the zone dampers can be set to allow some air to leak. By setting thelarger zone dampers to a minimum position, excess air pressure can be relieved even when only one zone is call-ing. This method does not typically affect room temperature, but the homeowner should be advised that air will becoming from these registers even when that zone is not calling.Discharge Air Temperature Sensor (DATS)The DATS should be located in the supply trunk between the evaporator coil or heat exchanger and the first zonedamper. If this is not possible, it is permissible to mount the DATS in the bypass duct.