Honeywell question

Steve Ebels

Is the resistance supposed to be on a cad cell. This would be under an "off" condition and with burner firing.

Thanks

Alan R. Mercurio

Steve, I might be mis-understanding your question but here goes. You said it's under an off condition? By this I'm thinking you mean the burner motor has stopped and there is no call for the burner to run? However you're experiencing some after burn possibly.

Ok if this is the case first lets remember that under normal conditions (Burner operating)we would expect about 300 to 400 Ohms of resistance. when we have a poor flame going into a smoke condition the resistance would rise until it reached 1200 ohms on older controls and 1600 on newer controls at this point it would lock out.

So if you have a flame without the motor running you know you're not getting the combustion air that is needed therefore your falme would be very dark (smoke) and your resistance would be high.

By the way with the new R7184 control if the burner if not running and the light on the control is on, this is telling you that it is seeing false light or experiencing after burn and needs some attention.

Hope this helps you my friend.

Your friend in the industry,
Alan R. Mercurio

Oil Tech Talk

Steve Ebels

Thanks Alan

Just what I needed to know. Happy and prosperous New Year to you my friend.

Alan R. Mercurio

You're very welcome

Happy New Year to you and your's too!

Your friend in the industry,
Alan R. Mercurio

Oil Tech Talk