In modern commercial building automation, the MC6 LoRaWAN Thermostat stands out for its seamless integration of long-range wireless communication and robust HVAC control. Whether you are retrofitting an older office building or equipping a new smart hotel, understanding the technical nuances of this 915MHz LoRaWAN device is key to optimizing energy efficiency.

This guide provides a step-by-step walkthrough for technicians and building managers on installing and configuring the MC6-U for 24VAC systems.

3.5” tft color touch screen

Humidity sensor, Ambient light sensor

Wi-Fi connective(Option)

Tuya App (Option)

LoRaWAN 868mhz/915mhz(Option)

BACnet MSTP/IP (Option)

Modbus485 RTU, TCP(Option)

Customized MQTT(Option)

7 day, weekday/weekend, 24hours schedule

Four or six events per day

History data tracking diagram(Up to 4 weeks)

Energy consumption statics

Defrost protection

Multi language(9 languages)

C/F temperature display

12/24 hours

Touch screen lockout

1. Pre-Installation Requirements

Before beginning the installation, verify that your HVAC infrastructure meets the following electrical specifications:

 * Power Supply: 24VAC (50/60Hz) is mandatory.

 * Relay Rating: 24VAC @ 1Amp.

 * Wiring: Use solid or stranded wire with a cross-section of 1.5mm².

 * Safety First: Always disconnect the power supply before handling any wiring to prevent equipment damage or electrical shock.

2. Wiring Terminal Breakdown

The MC6 is designed for versatility, supporting up to 3 stages of heating and 2 stages of cooling (3H/2C). Below is the terminal mapping for standard installations:

 * C & R: 24VAC Power input.

 * W1/W2/W3: Heating Control stages (Gas/Oil/Electric).

 * Y1/Y2: Cooling Control stages.

 * G: Fan control.

 * S1/S1: External sensor input (Compatible with 10K @ 25°C sensors).

 * Modbus RS485 (A/B): Optional terminals for wired building management system (BMS) integration.

3. Advanced System Compatibility

One of the MC6 strongest selling points is its broad compatibility. It is engineered to work with:

 * Heat Pump Systems: Including those with auxiliary heat.

 * Dual Fuel Systems: Seamlessly switching between fossil fuels and electric heat.

 * Boilers & Conventional Systems: Ensuring precision control for older heating units.

4. LoRaWAN Network Integration

As a LoRaWAN-enabled device, the MC6 excels in long-distance data transmission without the need for Wi-Fi.

 * Data Monitoring: It transmits real-time data including Room Temperature (0.1°C resolution), Humidity (+/-3% accuracy), and Setpoints.

 * Payload Management: Technicians can utilize the Byte ID structure (e.g., Byte 1-2 for Room Temp) to map data directly to a 3rd party cloud or local gateway.

5. Essential Technical Configurations

Once powered on, the 3.5” TFT color touch screen allows for deep customization. We recommend adjusting the following settings during commissioning:

 * Deadband & Differential: Fine-tune the temperature swing to prevent "short-cycling" of the compressor.

 * Frost Protection: Enable this to protect pipes from freezing in unoccupied buildings.

 * Schedule Mode: Choose between 7-day, 5/2-day, or 24-hour programming to align with the building's occupancy patterns.

6. Why the MC6 is the Choice for Smart Buildings

 * High Precision: With a 0.1°C display resolution, it offers superior comfort over traditional thermostats.

 * Durability: Encased in a PC+ABS fire-retardant shell, it is built for commercial environments.

 * Modern Interface: The capacitive touch screen and ambient light sensor provide a premium user experience.

MC6 wiring diagram for 24VAC" or "LoRaWAN smart thermostat for heat pumps

Here are the various wiring diagrams for the MC6 smart thermostat for you to choose from!