Johnson Controls Technology Company

Johnson Controls Tyco IP Holdings Llp

Tyco Fire & Security Gmbh

Sayan Chakraborty

Milan Mitra

Soumyadeep Ray

Anjani Kumari

Ryan A Piaskowski

Beth A Ray

Richard David Friend

Charles C Xing

Aaron D Wagner

A controller for controlling HVAC equipment in a building includes a processing circuit configured to receive an occupancy schedule indicating at least one of a first occupied period or a last unoccupied period for a space in the building for a schedule period and receive a user input indicating the space should be purged based on occupancy. The controller selects, based on the user input, at least one of a pre-occupancy purge mode or a post-occupancy purge mode. The controller is further configured to control the HVAC equipment to ventilate the space for a purge duration prior to the beginning of the first occupied period in response to selecting a pre-occupancy purge mode, and ventilate the space for the purge duration at the beginning of the last unoccupied period in response to selecting a post-occupancy purge mode.

Thermostat with epidemic control ventilation

Thermostat

A method for providing environmental comfort includes obtaining measurements of a dry bulb temperature, a relative humidity, and an airflow rate for an indoor space, calculating an apparent temperature for the indoor space using the measurements, and generating a visualization comprising a comfort band and a value of each of the apparent temperature, the dry bulb temperature, the relative humidity, and the airflow rate for the indoor space plotted relative to the comfort band along independent axes. The method also includes controlling building equipment to drive the value of one or more of the apparent temperature, the dry bulb temperature, the relative humidity, or the airflow rate into the comfort band.

Building management system with apparent indoor temperature and comfort mapping

An HVAC system for a building includes an airside economizer, a plurality of sensors, and a controller. The airside economizer includes a first air intake configured to receive return air from within a building, a second air intake configured to receive outdoor air from outside the building, and an air discharge configured to provide discharge air to the building. The controller is configured to identify a wet coil condition or a dry coil condition, calculate an enthalpy of the return air and an enthalpy of the outdoor air, select either a normal cooling mode or free cooling mode based on the calculated enthalpy of the return air, the calculated enthalpy of the outdoor air, and the identification of the wet coil condition or the dry coil condition, operate the airside economizer to provide the return air to the building as the discharge air in response to selecting the normal cooling mode, and operate the airside economizer provide the outdoor air to the building as the discharge air in response to selecting the free cooling mode.

HVAC system with economizer switchover control

A building management system includes a plurality of devices of building equipment and a system manager. The system manager is configured to control the devices of building equipment and generate a user interface. The user interface includes a command widget configured to allow a user to input a first command to control a first device of the plurality of devices of building equipment and an add annotation box configured to allow a user to add an annotation to the command. The system manager is further configured to control the first device in response to the command and store the annotation in an annotation database.

Building management system user interfaces

Growing community of inventors

Brookfield, WI, United States of America

Sayan Chakraborty