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Operating cost of Taco 007 running constantly

John McArthur_2
John McArthur_2 Member Posts: 157
in THE MAIN WALL
Taco has a system analysis tool that you can download from their site that will allow you to make those calculations. Siggy also has published wire to water efficiency formulas in PM mag.

I have the formula somewhere if you can't locate it.

Comments

  • Aaron_2
    Aaron_2 Member Posts: 11
    Costs of running a Taco 007 Circulator

    constanly or on/off with thermostat--Customer would like information so that I can convince him to keep the radiant heat in his Kitchen/Living/Sunroom running all the time and not to set it back at night or even when he is not there. Boiler maintains 180*F anyways.
  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Simplest method

    is to take the nameplate amps and multiply by the voltage to get Watts. Multiply by hours of operation and divide by 1,000 to get kWH and multiply that by the electric rate. You may even have Watts on the nameplate.

    Example: If the nameplate has an amperage of 0.7 Amps and the voltage is 115, Wattage is 80.5. If it runs 24/7 for 180 days (October to April) that is 347.76 kWH. If the HO pays 12 cents per kWH that is $41.73 per season.

    Within all this are variables: Electric rate may vary by time of day so would be an average. Actual amperage will vary with voltage. An amp meter reading with concurrent voltage would be a good method. Actual amps vary with the load imposed. More flow or head, more amps. So the actual reading absorbs a lot of otherwise theroretical variables. You may pare the above example down by 15-20% as a guess.

    If they are keeping the boiler at 180 constantly though, I have to wonder why they are focussing on an extra lightbulb's worth of electricity even if it adds up. Might you consider an Grundfos 3-speed to give them some comfort (so to speak) in the electric bill department?

    A Tekmar reset control might be a better investment... :)

    My $0.02

    (my electric rate should be so...)

    Brad
  • Ron Schroeder
    Ron Schroeder Member Posts: 998


    The wattage also changes with head pressure. If a pump is overcoming a high pressure drop, it will usually use a little less electricity than with open flow.

    Ron
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