Lennox TGA CO2 sensor

[deux]

Hey guys,
I have a lennox TGA150SBH1J. I just added a CO2 sensor form lennox.
Seems straight forward, wired up easy. But I have this little pin jumper left over in the bag of tricks. You know the pin jumper to double up 2 pins on a PC board to change things.

Instructions say nothing about the little black jumper. I ran out of time to test the dampers. I am
going back in the AM to blast the sensor with CO2 and make sure everything works.

What the heck is the little black jumper for?????

[timebuilder]

Which econ module?

[brian.cornell]

On most Lennox branded co2 sensors there is a jumper to select your output signal as either voltage or current at least the ones we use anyway without knowing exactly which one you have I can't say for sure

[brian.cornell]

And it sounds funny but I usually just breathe on the control to check the operation I've never used co2

[deux]

My neck isn't gonna reach to where I put this one. It seems to work without the jumper. I am going to keep it on the dash of my truck for awhile. Or until the next spilled coffee washes it away. Paper work is outside in the truck so I don't know the cat number of the box. It was the 4 x 3 x 2 black one. LOL.. My wiring dia just showed
a 24v input and 7 & 8 going to the A set on the W4 board. But the sensor is said to work with a smart wire. As I have no smart wire, and no mention of the jumper, and it works, I will call it good.

Thanks