Boiler design

aot2002 · 08-21-2011, 10:26 AM

I had someone recently tell me that multiple circulators are chewing up power and zone valves would be better.

I have 7 circulators which includes one for the boiler mate.

How effective is it to go to zone valves and have one circulator running under a 7 zone system?

**beenthere** · 08-21-2011, 10:54 AM

A Taco 007-F5 has a rating of .71 amps. Few draw more then .6 amps. 6 times 120 equals 72 watts. 7 times 72 equals 504 watts total, if all 7 are running at the same time. this should only happen on the coldest day/days of the year.

7 zones valves opened at the same time, plus 1 circulator(0010 since it has to move all the water) equals 188 watts. This would reduce your circulating wattage by almost 63%. And could probably pay itself back in 35 years or so. After factoring in the cost of valves, transformers, and wire.

Multiple circs, means if one ails, you still have the other zones that can keep you warm. With zone valves, if the circ dies, you got little to no heat anywhere, and cold showers are no fun at 5"30 AM.

aot2002 · 08-21-2011, 01:15 PM

Quote:

Originally Posted by beenthere

A Taco 007-F5 has a rating of .71 amps. Few draw more then .6 amps. 6 times 120 equals 72 watts. 7 times 72 equals 504 watts total, if all 7 are running at the same time. this should only happen on the coldest day/days of the year.

7 zones valves opened at the same time, plus 1 circulator(0010 since it has to move all the water) equals 188 watts. This would reduce your circulating wattage by almost 63%. And could probably pay itself back in 35 years or so. After factoring in the cost of valves, transformers, and wire.

Multiple circs, means if one ails, you still have the other zones that can keep you warm. With zone valves, if the circ dies, you got little to no heat anywhere, and cold showers are no fun at 5"30 AM.

http://www.citytrf.net/costs_calculator.htm
yes using this calculator @ 12 cents per kilowatt it's like 5 dollars a year lol...okay so im leaving that part of the design.

Next question is what is the best way orientation side ways or up down or at the bottom of teh loop or top .......
I am I putting in a 95% wall furnace to replace my old 85% boiler but wanted to make sure my current loop design is okay.

**beenthere** · 08-21-2011, 01:22 PM

Don't have the motors pointing up or down. As far as the water flow, doesn't matter if its horizontal or vertical.

aot2002 · 08-21-2011, 01:35 PM

can you provide a picture of proper orientation?

**beenthere** · 08-21-2011, 01:46 PM

http://www.taco-hvac.com/uploads/Fil...ry/101-029.pdf