Step 5: Wire the relays to the fireplace

This article is part of the Make your Bellfire fireplace smart project that I presented during the Home Assistant Conference 2020.

It’s time to execute the final step, you can find all steps in the overview how it all going to work article.

Now everything is set. We now can connect the relays to the fireplace and light up the fireplace using Home Assistant.

The wiring

Again very basic wiring is needed.  I need to make sure that I connect the wiring to map the pinout of the fireplace.

If we look at the pin-out on the fireplace, going bottom up.

• Pin 0 is the common circuit and need to be connected to the COM of all three relay.
• Pin 1 wires to the Normal Open (NO) port of relay 1
• Pin 2 wires to the Normal Open (NO) port of relay 3
• Pin 2 wires to the Normal Open (NO) port of relay 3

See wiring details below.

That’s it! Now sit back, open Home Assistant and press the ignite button. Your fireplace will now lite up.