Condar Temp Probe vs. The Thermocouple...

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by WES999, Feb 1, 2010.

Thread Status:
Not open for further replies.
  1. pen

    pen
    Expand Collapse
    There are some who call me...mod.
    Staff Member

    Joined:
    Aug 2, 2007
    Messages:
    7,722
    Likes Received:
    1,519
    Loc:
    N.E. Penna
    Now that I think of it....

    The probe reading 800 be experiencing much cooler temps (for the body of the unit itself) than the surface thermometer would.

    A surface thermometer is actually living in the 800 degree environment if that's what it is reading. A probe thermometer is just interpreting 800 degrees.

    I'd ask the guy about that and see what he says.

    pen
     
    Collapse Signature Expand Signature

    Helpful Sponsor Ads!





  2. begreen

    begreen
    Expand Collapse
    Mooderator
    Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    60,657
    Likes Received:
    7,676
    Loc:
    South Puget Sound, WA
    Collapse Signature Expand Signature
  3. Todd

    Todd
    Expand Collapse
    Minister of Fire

    Joined:
    Nov 19, 2005
    Messages:
    9,229
    Likes Received:
    345
    Loc:
    Lake Wissota
    I wish that thermometer had a little higher range. I can see pegging it pretty easily if your not careful. What kind of temps do you generally see with it?
     
    Collapse Signature Expand Signature
  4. 3fordasho

    3fordasho
    Expand Collapse
    Minister of Fire

    Joined:
    Jul 20, 2007
    Messages:
    593
    Likes Received:
    73
    Loc:
    South Central Minnesota

    Two fireviews with different flue set-ups and different temp probe locations due to the flue differences. On start up or reload (bypass open) I try to keep flue temps 500-600F. In cruise mode (load of wood/cat engaged) one stove will run 300-400F, the other runs 400-500F (flue temp, not stove top). I've only pegged the tel-tru once or twice when I forgot to shut down/watch the temps for a few/5 minutes and yes it can happen pretty easy but this is the time you can't let yourself get distracted or really even leave the stove room as I seen reloads go from 400 to 1000F+ in minutes. I have not pegged either one this season or last so I must be keeping a closer watch on things. One tel-tru did read low after the over temp incident. Most models can be recalibrated.
     
    Collapse Signature Expand Signature
  5. begreen

    begreen
    Expand Collapse
    Mooderator
    Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    60,657
    Likes Received:
    7,676
    Loc:
    South Puget Sound, WA
    Dasho, what is the flue setup? Straight up or with elbows?
     
    Collapse Signature Expand Signature
  6. Todd

    Todd
    Expand Collapse
    Minister of Fire

    Joined:
    Nov 19, 2005
    Messages:
    9,229
    Likes Received:
    345
    Loc:
    Lake Wissota
    Wow, those temps seem low but if you figure flue temps are 50% higher than external single wall temps like Condar states it would be right in line with mine. I guess I might have to try another thermometer.
     
    Collapse Signature Expand Signature
  7. 3fordasho

    3fordasho
    Expand Collapse
    Minister of Fire

    Joined:
    Jul 20, 2007
    Messages:
    593
    Likes Received:
    73
    Loc:
    South Central Minnesota
    Both stoves use Supervent products as sold at Menards. All connector sections are double wall, the class A stuff is the double wall stainless with the insulation between.

    Stove A (first installed) has a 90 elbow right on the back of the stove, an ~3' vertical run of double wall connector pipe(tel-tru is installed in this section, about 24-30" above the stove) to a 45 elbow, 1' straight to another 45 elbow that ceiling connects to 15' of class A.
    Aproximately 4-5' of the class A is in attic space, the rest exposed. This is the stove that runs 300-400F flue temps at cruise.

    Stove B has a horizontal run of adjustable length double wall connector pipe (~18") that goes straight out the back of the stove to a section of class A that comes thru a wall thimble. Next is a class A tee, then a vertical class A run of ~ 21' encased in an insulated chase with the top 3' exposed. In this set up my tel-tru flue themometer is in the horizontal adjustable length section of connector pipe, about 16" from the back of the stove. This one runs 400-500F flue temps at cruise.
     
    Collapse Signature Expand Signature
  8. begreen

    begreen
    Expand Collapse
    Mooderator
    Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    60,657
    Likes Received:
    7,676
    Loc:
    South Puget Sound, WA
    Thanks. You are seeing higher temps in the flue with the same stove when the flue gases are slowed down by a 90deg turn. That seems logical and may help explain why my temps are so consistently reasonable with a straight-up pipe.
     
    Collapse Signature Expand Signature
Thread Status:
Not open for further replies.

Share This Page