Help With a Digital Manometer- Keystoker

Hello,
I have a 90k Keystoker and am looking to check the draft properly.

I have a dual port digital manometer ( Rise HT-1890) , a probe and a small hole drilled into the ash pan door.

Not exactly sure what to do next?:

- what setting should I use on the device ( psi,kpa, inH20 ) ?
- do I need to plug one of the ports in order to get a proper reading?
Thank you!!

I'm sure you'll get replies but in the meantime go to search bar--top right --& type digital mano settings or something similar.

Thanks Fred, I was able to dig up some great info...unfortunately not much on how to properly use a digital manometer. Hoping for some guidance....this is new ground for me.

Cheers!

Typically draft is measured in inches of water. You should leave the second port (sometimes labeled high side, or +) open.

The manual for your stove should have the desired draft reading at the flue outlet, and also in the firebox.

I'm not a pro Jay, but if I was a bettin man, I'ld put it to inches of water, and one probe just goes to atmospheric pressure, while the other you'll hook into your pipe. If you hook the lines up backwards, it'll just read on the plus side, rather than the negative. Give it a shot. Nothing to lose.
EDIT (too slow on the trigger. Rob wins.)

Thanks guys, I am thinking that my manometer is either bad - or I am just not as smart as the machine I am operating- or both.
I set to inches of h2o ....put it in the stove and it still reads 0.00, only changes when I plug the other probe. And it doesn't seem to have an option to just take a reading from a single probe.

I appreciate the input!

Why do you have it in the ash pan door? I never heard of that..

Jaycmh wrote:Hello,
I have a 90k Keystoker and am looking to check the draft properly.

I have a dual port digital manometer ( Rise HT-1890) , a probe and a small hole drilled into the ash pan door.

Not exactly sure what to do next?:

- what setting should I use on the device ( psi,kpa, inH20 ) ?
- do I need to plug one of the ports in order to get a proper reading?
Thank you!!

===============================================================
Hello Jaycmh,

You want the H20 setting; when was the last time the batteries were changed or
checked in your digital manomometer? check the batteries and if bad change them and then recalibrate it according to the user manual if possible

You may end up investing in a Dwyer Mark II if you cannot use it as those little monsters usually work in plenums with a restriction in between the two sets of probes like a set of filters or a heat exchanger.

grumpy wrote:Why do you have it in the ash pan door? I never heard of that..

Good point grump. maybe we're overlooking something.

joeq wrote:

grumpy wrote:Why do you have it in the ash pan door? I never heard of that..

Good point grump. maybe we're overlooking something.

Over-fire draft. The ash area and firebox are all the same cavity. It is important to make sure the combustion blower is not pressurizing the firebox.

I drilled a hole in the top right corner of the lower door.... That opens to remove the ash pan

I thought I read that the new stoves come with a pre- drilled hole in that location?

Certainly would explain a lot of I am putting the probe in the wrong spot!

Lower door upper right corner is the correct place for the hole.

Is this a means of measuring chimney draft, or something else? Why wouldn't it be more accurate on the stove pipe? Or does this manufacturer port the ash pan door/cavity to this area?

The exhaust pipes to the chimney in the Keystoker 90 exit from the rear floor area where the ash pan resides. They than travel up the back and exit the top rear of the chimney vent model I have.

joeq wrote:Is this a means of measuring chimney draft, or something else? Why wouldn't it be more accurate on the stove pipe? Or does this manufacturer port the ash pan door/cavity to this area?

IIRC, Keystoker wants the draft set by overfire, not stovepipe draft.