HVAC bypass control
AssigneeLennox Industries Inc.
InventorsWalter Davis, II, Roger Hundt, Colin Clara, Eric Perez
Life of this patent
Estimating the term…
Abstract
A heating, ventilation, and air conditioning (HVAC) system is configured to receive a signal from a thermostat. The signal instructs the HVAC system to operate a component in a partial load mode. The HVAC system is further configured to determine that the component has exceeded its operating envelope. In response to determining that the component has exceeded its operating envelope, the HVAC system is configured to operate the component according to an override configuration. The override configuration overrides the signal to operate the component in the partial load mode.
Claims20
An HVAC system comprising:
- a thermostat configured to:
- transmit a signal intended for a component of the HVAC system, wherein the signal instructs the component to operate in a partial load mode;
- and
- a bypass circuit configured to:
- intercept the signal instructing the component to operate in the partial load mode;
- determine that the component has exceeded its operating envelope;
- and
- in response to determining that the component has exceeded its operating envelope, send a replacement signal to the component, wherein the replacement signal instructs the component to operate according to an override configuration, wherein the override configuration prevents operation of the component in the partial load mode for at least a period of time.
A method of operating an HVAC system, comprising:
- intercepting a signal from a thermostat, wherein the signal instructs a component of the HVAC system to operate in a partial load mode;
- determining that the component has exceeded its operating envelope;
- and
- in response to determining that the component has exceeded its operating envelope, sending a replacement signal to the component, wherein the replacement signal instructs the component to operate according to an override configuration, wherein the override configuration prevents operation of the component in the partial load mode for at least a period of time.
A system comprising:
- a compressor configured to receive a first signal and a second signal, the first signal indicating to the compressor to turn on or off and the second signal indicating to the compressor at which speed to operate,
- a controller configured to control the operation of the compressor, wherein the first and second signals originate from signals generated at the controller;
- and
- a bypass circuit configured to intercept the second signal originating from signals generated at the controller before the second signal is received by the compressor and supply a replacement second signal to the compressor.
Dependencies are inferred from the claim text.