Carrier SYSTXCCITN01-A Installation Instructions Manual

Also see for SYSTXCCITN01-A Infinity: Owner's manual Owner's manual

Contents

Carrier SYSTXCCITN01-A Installation Instructions Manual Manual pdf 32 page image

23detection operation will not be affected. Press NEXT when the airflow verificationcheck is complete.NOTE: The airflow verification check occurs at initial installation, or when FULLINSTALLATION or AIRFLOW VERIFICATION TEST are selected in theINSTALLATION & SERVICE menu.5.12. Duct Assessment (zoned systems only)The duct assessment screen will be displayed next for zoned systems. Touch NEXTto start Duct Assessment. Duct Assessment will measure the relative size of theductwork, up to and through the dampers. These measurements are used to controlthe correct amount of airflow in the zoned system. Status messages will appear onthe screen to indicate what the system is doing. The process will take approximatelyone minute per zone. The duct assessment will override a call for heat or cool.A duct assessment will automatically occur each day at a user selectable time. Thefactory default time is 1:00 p.m. but, may be changed by entering the Zoning Setupmenu (see pages 45 -- 47). If there is an active call for heating or cooling, thesystem will wait until the call is satisfied before it performs the duct assessment.The system will first open all zones and drive the blower to 175 CFM/ton of cooling(or the minimum indoor unit’s airflow, whichever is greater). It will then take astatic pressure measurement. The system will then close all zones and open onezone at a time, taking a static pressure measurement for each zone.The system will then close all zones and take a pressure measurement, getting avalue for the duct leakage up to and through the dampers. With these static pressuremeasurements, the system will calculate the relative size of each zone as well as thepercent leakage through the dampers At the end of the process, the display willshow the relative size of each zone duct.If the Infinity Touch Control detects an error (damper not moving or damper wiredbackwards), it will perform the duct assessment again. If it still detects a damper