Dragino Thermostat1

[Roberto Segado]

Will the Thermostat1 transmit LoRaWAN uplinks with only Rh and C wired and no HVAC load connected to the output terminals?  

[Roberto Segado]

Question: Will the Dragino Thermostat1 transmit its LoRaWAN uplink payload normally when only Rh and C are wired, and all HVAC output terminals are left unconnected?

Background: I currently monitor temperature and humidity in a small apartment building using Dragino LHT52 LoRaWAN sensors. I want to replace these with Dragino Thermostat1s to add a tenant-facing display and allow occupants to select their own temperature setpoints.

Each thermostat will be powered via existing 2-conductor wiring between the apartments and the mechanical room, connected to a 24VAC transformer — no HVAC wiring will be connected to the thermostat terminals. The thermostats will function solely as LoRaWAN sensor/input devices, transmitting room temperature, humidity, and tenant setpoint via TTN to either a Raspberry Pi or a Control Core PLC in the mechanical room.

All control logic — switching of in-floor heating pumps and fan coil units — will be handled entirely by the RPi or PLC. The thermostats play no direct role in HVAC switching.

[Bobby Logan]

As long as it’s powered properly and properly configured it will send uplinks with the data it has. 

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