Honeywell International Inc.

Honeywell G.m.b.h.

Other

Ademco Inc.

Robert J Schnell

Cary Leen

David Schultz

Brent D Vick

Philip J Bohrer

Mark W Peterson

Gregory J Merten

James W Ratz

Michael B Atlass

Steven C Nichols

Patrick C Tessier

Heidi Finch

Stan Zywicki

Marcus D Stoner

Daniel T Uhrich

James Grenkoski

Kurt L Elliason

Michael Lunacek

Peter Joseph Erickson

Aaron J Klein

Renee Bedros

Systems, assemblies, and methods include features for selecting a fan speed priority setting to facilitate dehumidification of a space while maintaining a comfortable temperature in the building across a range of cooling loads. In one example, an electronic assembly may operate a multi-speed fan at a lower fan speed or higher fan speed based, at least in part, on a current cooling load on the cooling system of the building and a dehumidification high fan speed priority setting entered by a user.

Dehumidification control system

An auto changeover mechanism for a thermostat. A heat and cool mode auto changeover with single or crossed setpoints may be an approach for doing a single setpoint auto changeover, an approach that can handle auto changeover with separate heat and cool setpoints that do not require the cool setpoint to always be higher than the heat setpoint, and also an approach that does not necessarily require a dead band between the setpoints. A hysteresis may be associated with switching to the other mode. The thermostat having the auto changeover mechanism may have a display of a mode that automatically changes between heat and cool.

Multi-mode auto changeover system

A programmable thermostat may be configured to control one or more pieces of HVAC equipment in accordance with a programmable schedule. The HVAC equipment may be capable of modifying a temperature of an inside space with at least a primary stage and an auxiliary stage. The programmable thermostat may include a memory for storing operating parameters of the programmable thermostat, a user interface configured to accept modification of operating parameters, including one or more droop values, and a controller coupled to the memory and the user interface. The controller attempts to control the temperature of the inside space with the primary stage of the HVAC equipment, but if the temperature of the inside space deviates from a desired setpoint temperature value by more than or equal to a programmed droop value, the controller may activate the auxiliary stage. In some instances, the user interface of the programmable thermostat may be configured to allow a user to selectively override one or more of the applicable droop values. In some instances, the droop value that is used may depend on the current operation condition of the controller.

HVAC control with comfort/economy management

Methods of providing dehumidification control in unoccupied spaces are disclosed. An illustrative method can include the steps of providing a controller having an away mode of operation adapted to provide dehumidification within the interior space of a building or room, providing one or more system components adapted to control the humidity and/or temperature within the interior space, initiating the away mode of operation within the controller, and operating the one or more system components for at least one cycle to reduce the humidity within the interior space.

Methods of dehumidification control in unoccupied spaces

Adaptive intelligent circulation control methods and systems are used to help increase the comfort and/or reduce energy usage and equipment wear. In one illustrative embodiment, the circulation and/or ventilation time is adjusted based on one or more environmental conditions inside or outside the building structure. In another illustrative embodiment, the circulation and/or ventilation time may be adjusted based on the current time of day, current time of year, and/or the current schedule period. In another illustrative embodiment, the circulation and/or ventilation time is randomized over time. The start time, end time, and/or length of a circulation and/or ventilation cycle may be randomly set.

Intelligent circulation control methods and systems

A building controller for controlling the comfort level in a building is described. The building controller may include a thermostat and wireless remote controller for communicating with the thermostat from a remote location. The thermostat may have access to a first temperature sensor for sensing a first temperature, sometimes at or near the thermostat. The remote controller may likewise have a second temperature sensor for sensing a second temperature, sometimes at or near the remote controller. Under some conditions, the thermostat may use the second temperature sensed by the remote controller to control the comfort level in a building unless or until a predetermined condition is detected, after which the thermostat may use a different temperature, such as the first temperature at or near the thermostat, to control the comfort level in a building.

Building control system with remote control unit and methods of operation

An HVAC controller with setpoint recovery with utility time of day pricing. In one illustrative embodiment, the HVAC controller may include a nominal programmable schedule and a utility pricing schedule. The utility pricing schedule may correspond to scheduled price changes of a utility, including one or more enhanced pricing time periods each having corresponding one or more enhanced pricing time period setpoints. The HVAC controller may establish or modify an enhanced pricing setpoint recovery schedule based at least in part upon the nominal schedule and the utility pricing schedule, and may control one or more HVAC units in accordance with the setpoint recovery schedule. In some instances, the HVAC controller may identify recovery opportunities based at least in part upon the nominal schedule and the utility pricing schedule.

Setpoint recovery with utility time of day pricing

Adaptive intelligent circulation control methods and systems

A system and method for regulating the operation of first and second temperature modification sources for heating or cooling a building structure is provided. The system switches between the first and second temperature modification sources based on conditions other than just outside temperature.

Temperature control in a space served by multiple HVAC equipment

A method for adjusting a plurality of controlled subsystems in a building or plant that facilitates cooperative energy usage with a utility provider. By referring to a single profile of adjustments that correspond to changes in the value of a utility signal and distributing this to each relevant controller for each subsystem, a single setback delta can be applied to each subsystem for each change in utility signal value (i.e., pricing information). Alternatively, multiple profiles can be used to provide for firmer control and thereby allow for different zones to respond differently to a single change signal sent by the utility provider.

Growing community of inventors

Plymouth, MN, United States of America

Robert J Schnell