Furnace Upgrade/repair

Finally, it's done.

Since I am off work for the covid crisis and it is a nice warm day I decided to finally finish with the furnace.

Old way with sequencer.

I got all the tools and materials together.

Tools and materials.

Then I tore into it.

I didn't take pics of the process as I was concentrating on not messing up.

I wound up reusing a majority of the existing wiring as it was in good shape.

Only had to make a couple of new wires.

Unfortunately, it did not come out as neat as I had hoped but it works properly.

All done and working.

Now I have a fan only option on the furnace as well as heat.

And instead of the fan and a heating coil both running on one contact each coil and the fan has it's own contact.  No more burnt contacts.

The contactors are rated at 40 amps per contact.

Each heating element is 20 amps.

The fan is probably around 10 amps.

Well within the rating of the contactors.

Only noticeable difference in the operation of the furnace (other than the independent fan) is a audible 'click' when the contactors activate.

I'm good with that.

The reason it would not work before is the old control transformer was only rated at 10 amps.

That was not enough to turn on the contactors.

The new one is rated at 40 amps.

Hopefully, this will last a long time.

Time to relax a bit now.