Energy Kinetics 2000 - Smart Thermostat

Mdaniels80

Hello,

I have an Energy Kinetic 2000 oil burner and purchased the Sensi 2. I previously had a C wire installed- although not to the burner or thermostat since I didn't have a smart thermostat at the time. I thought this was going to be easy but of course it isn't. I have three wires from the thermostat, an R, W and C. I thought I the only thing I needed to do was hook up the C wire to the control board once I hooked up the Sensi Thermostat. Research pointed me to the A2 terminal. After doing so, and ensuring multiple times it was tight, I can't get the thermostat to turn on/ power up. Any advice on this issue? Or should I call my burner contractor for service?

Background: Thermostat is for the lower level which only controls heat. Upstairs/ main level (doesn't have C Wire) controls both AC and Heat. I have a smart thermostat there as well (sensi original) that doesn't require C wire but had enough wires to be compatible. Attaching photos of how I hooked up the C wire to the control board. The green wire is the C wire and going to A2.

Thanks for any assistance you may be able to provide!!!

Jamie Hall

Do you have a multimeter? Check and see if you have 24 VAC between the red and green wire at the thermostat base. If not, see if you have 24 VAC between white and green. If you have 24 VAC between white and green, but not between white and red, swap the red and white wires at either the thermostat base or the control and see what happens.

HVACNUT

Yes, A2 is Common. Make sure the wire connected to R is coming from A1, and W on the thermostat connects to a "T" terminal on the Manager. (R/A1 is 24 volts power, so thats what powers the thermostat. ) In the photo, Red is on a T" terminal, and Red is probably on R at the stat, so just switch the wires at the thermostat.

What's connected to the top zone (THW), water heater? It looks like a resistor in there. I wonder why.

Jamie Hall

"What's connected to the top zone (THW), water heater? It looks like a resistor in there. I wonder why."

I saw that too — that's does look like a big (high wattage) resistor. I'd surely want to know why.

Mdaniels80

Thank you all for your help. I switched the red and white wires on the thermostat and sure enough it works! Thanks so much!

Not sure about the resistor. I do have a water booster with the system. No idea if that could be why- I am a novice with the control board, etc.

Thank you all!

Greening

There are some documents that help with smart thermostats, including the one linked below. Our Ecobee Lite might have been a bit different but can't remember tbh. We see one case for a resistor here too:

https://energykinetics.com/wp-content/documents/display-manager/nest-power-sharing-wiring.pdf

Robertw

Check your polarity. A1 is power out, typically the red wire. I see your red wires are connected to the switched terminal on the energy manager. We typically use the white wire as the switched leg. A2 is the common.

jringel

The resistor was installed on the circuit for the hot water storage tank on the older Energy Managers. The system will operate without it and the newer managers don't require them.