US 12,326,267 B1
HVAC controller and a method for testing HVAC systems
Nayeem M. Hussain, Union City, NJ (US); Mahesh Choudhury, Westborough, MA (US); Bhaskar Panigrahi, Southborough, MA (US); Vinay Kumar, Westborough, MA (US); Kevin Stateham, Oxford, MA (US); and Ryan T. Fant, Chicago, IL (US)
Assigned to CONNECTM TECHNOLOGY SOLUTIONS, INC., Marlborough, MA (US)
Filed by CONNECTM TECHNOLOGY SOLUTIONS, INC., Marlborough, MA (US)
Filed on Mar. 16, 2022, as Appl. No. 17/696,500.
Claims priority of provisional application 63/169,491, filed on Apr. 1, 2021.
Int. Cl. F24F 11/88 (2018.01); F24F 11/49 (2018.01); G05B 23/02 (2006.01); G05D 23/19 (2006.01); F24F 11/64 (2018.01)
CPC F24F 11/49 (2018.01) [F24F 11/88 (2018.01); G05B 23/02 (2013.01); G05D 23/1917 (2013.01); F24F 11/64 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A heating, ventilation, and air conditioning (HVAC) controller comprising:
a plurality of control terminals for connecting to corresponding control terminals on an indoor unit for an HVAC system;
at least one controller power terminal for connecting to a power terminal on the indoor unit for the HVAC system;
a shutoff terminal for connecting to a power terminal on a thermostat for the HVAC system, wherein interrupting power from the power terminal on the thermostat deactivates the thermostat; and
a controllable power relay electrically coupling the shutoff terminal and the controller power terminal;
wherein the controllable power relay is closed during normal HVAC system usage and is opened for a testing process; and
wherein the shutoff terminal is the only connection between the HVAC controller and the thermostat that is not electrically coupled with the indoor unit.