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  1. #1
    Join Date
    Jan 2008
    Location
    Lehighton, Pa.
    Posts
    178

    Furnace running non stop

    New app. 2500 Sp. ft. home in NE Pa. Infinity two stage 60,000 BTU propane furnace. Last night OD temps 6 deg. Indoor stat set to 71 deg. Furnace ran all night mostly in low stage, and periodically going to second stage. Is this normal with these cold temps?

  2. #2
    Join Date
    Aug 2012
    Posts
    2,675
    Yes, if you turned down to 68 you wuld save energy and it would cycle.
    My name is TooCoolforschool and I am a chronic over charger.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,307
    Its working the way it is suppose to work.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,051
    Did you like the warm air continuously circulating rather than on and off?

  5. #5
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,295
    Sounds just what a 2 stage furnace should be doing.

    Sent from my HTC VLE_U using Tapatalk 2

  6. #6
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,739
    Wow, a properly sized piece of equipment! Hopefully we'll see more and more of this...
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  7. #7
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,564
    As all posters have commented, it seems you've actually gotten a properly sized system!!! And it's working properly as designed. Yes, it will run longer cycles due to the multi-stage, however the 2nd stage (high) should only operate periodically. Sounds good!!

  8. #8
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,739
    ...Would you mind letting us know at what OD temps it cycles OFF instead of between stages?
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  9. #9
    Join Date
    Jan 2008
    Location
    Lehighton, Pa.
    Posts
    178
    It is now 19 od, inside set to 72. It is cycling on and off and only running on low stage.

  10. #10
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,739
    THINGS THAT MAKE YOU GO "HMMMM". So here's something to think about. If you lived in an area where 19f was outdoor design temp, your furnace might be considered grossly over sized.

    72 seems a fairly warm ID setting. (it AIN'T just TEMPERATURE!) Is the relative humidity maybe a little low?

    Infinity has really awesome control of humidity. Do you have a humidifier on the furnace?
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  11. #11
    Join Date
    Jan 2008
    Location
    Lehighton, Pa.
    Posts
    178
    We are retired seniors. In our younger days 65 was comfortable. No more. You'll see. One of the downsides of age, but consider the alternative. Yes we do have a bypass humidifier. Usually keep it around 38% but lowered it to the 25 with the colder od temps to prevent sweating of the windows. Once the coldsnap breaks, it will be raised again.

  12. #12
    Join Date
    Jan 2008
    Location
    Lehighton, Pa.
    Posts
    178
    Forgot to mention, Living area and master br have 12 ft. cathedral ceilings which obviously needs a lot of heat.

  13. #13
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,739
    Quote Originally Posted by jeepgrady View Post
    We are retired seniors. In our younger days 65 was comfortable. No more. You'll see. One of the downsides of age, but consider the alternative. Yes we do have a bypass humidifier. Usually keep it around 38% but lowered it to the 25 with the colder od temps to prevent sweating of the windows. Once the coldsnap breaks, it will be raised again.
    I feel ya, as I sit here with my cold kankles.

    Should be set and forget. I know commissioning is not part of resi lexicon, and that unit is so complicated even if they did give you the run through it can't all possibly stick.

    The Infinity should manage RH based upon outdoor temp. Let it do it's thing. If you see condensation occurring, adjust it back one notch (feedback to the machine that the house can't handle that RH curve).

    Think of it this way, computers calculate in split seconds data it would take you a life time to process. Communicating equipment is a very sophisticated computer you could never hope to match.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

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