OO7 circ

Andy Morgan_2

If a hundred watt lightbulb uses $.04 worth of electric an hour, how much power would a 007 circ use? Customer is concerned about a primary pump running 24/7. I am not sure of the answer.

Thanks

Andy Morgan

R. Morgan Mechanical, LLC

Al Letellier

007 draw

Andy, watts=voltsxamps, so a 007 at 115 volts has a normal amp draw of .7 amps, then a 007 will draw the equivelant power of a 80 watt light bulb. Flow head will vary the actual amp draw of your pump a little one way of the other, but this is close enough to help you win your point.

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steve_66

taco 007 power usage

According to my catalog info, a Taco 007 consumes 0.7 amps at 115 volts, or roughly 80 watts of power. In 24 hours that would add up to 80 watts x 24 hours=1920 watt hours or 1.9 kwh. At our local rate of $0.15/kwh the cost would $0.28 /day. By comparison, a 100 watt light bulb burning 24 hrs/day consumes 100 x 24 = 2400 watt hours or 2.4 kwh. At $0.15/kwh that would be $0.36/day

Dave_22

Power

amps rating on pump X voltage(120)=watts X price per Kwh
for example:

.7 amps X 120=84watts 84watts= .084 Kwh

If the rate is 10cents a Kwh then:

.084Kwh X .10 cents= .0084 cents per hour

equates to about $6.04 a month.

Someone let me know if my maths wrong!!!!

Mellow_2

circs

If you have ten circs turning on and off you could burn more electricity than zone valves.........cool how about 14 zones.......

Steve Eayrs

I bet someone has a handy chart out there


Would be nice to look at the total amps draw and the cost per kwh and get a quick comparision of costs. Would be great to hand out to customers who need more reasons to upgrade, than the obvious 10-30% in fuel savings.
Anyone want to share the info?
We all run into those systems with constant operation pumps, that w/ proper i/o reset and other controls could reduce the run times at least in half.

thanks,
Steve

Ron Schroeder_2

Low power pumps.

If you are really looking into power savings, carefully determine your pump sizing. The head in a primary loop is usually low so you might be able to use a Taco 005@.53A, 006@.52A or 003@.42A or even a Laing UC-303B@.3A.

Laing Inc. and Ivan Labs make DC pumps that are suitable for injection pumps and small to medium loops from 20 watts down to only 5 watts.

Also there are some very low wattage zone valves like the Taco ESP or the Caleffi thermal actuators at 3 Watts and the Slant Fin Thermal actuators at 2 Watts.

Ron

Uni R

power use

Hrmmm... $0.04 x 100/1000 = $0.40 per KWH That's some very expensive electricity there. The 007 uses almost exactly 80% as much electricity as that 100 watt bulb. Given a more realistic figure of $0.15 per KWH, that would be $0.012 per hour or about $0.30 / day during the heating season. A 200 day season makes in about $60 annually.

steve_67

handy chart

I have an Excel spreadsheet that I use to calculate operating cost. An image of the output is attached. I'd be happy to email the spreadsheet to you.

Steve Eayrs

thanks Steve

I would love to get a copy of your spreadsheet.
e-mail is eayrs@xyz.net.

thanks, Steve