TACO 007 circulation pump question

BHD_CT

My 10 year old single circulation pump with zone valves has a TACO 007 BF5-J circulation pump that has recently begun a rhythmic louder hum. It runs at a minimal hum level for perhaps 10 to 20 seconds and then the hum gets loud enough to hear on the floor above for about 10 seconds. This cycle repeats regardless of which zone valve is open.

I've done some online reading on the 007 pump series and am going to replace it with the 007e.

Question is whether I can leave the base casting from the old 007BF5-J in place and just mount the 007e motor assembly on it, or do I need to use the base casting that comes with the 007e. The original casing is bronze (BF = bronze, flanged) so it would be nice to keep in place.

Thanks,
BH

Zman

The new circ will have the same flange-to-flange measurement, so it will fit. Some circs have different flange orientation. I would check to be sure that you order the same as you have if clearance is an issue.

SteveSan

@BHD_CT It could be the start of the cartridge assembly failing. Normal amp draw should be on the data label. I believe it is .74. If more than 1.5 x times that, then you could just change the cartridge 007-045RP.

If you want to go ECM with a 007e then you would have to change out the entire pump. It would be the same flange to flange dims so easy swap out. Unfortunately, you just can’t leave the old volute in and replace with the ECM motor assembly

. Any questions please call Taco Technical Services during normal business hours M-F 8am-5pm 401-942-8000. Have a great weekend.

BHD_CT

Thanks everyone.
BH

Dave H_2

The bigger question is why is there a bronze circulator in this system? Is it an open system, water heater being used as a heat source? If so, you cannot use a cast iron circ in this replacement.
To answer your question, the casting design is different from the 007 to the 007e, so you would not be able to replace just the motor portion, however as everyone else has said, the flange to flange distance is the same.
So if the bronze is needed, you could go with a 007e in stainless flanged

Dave H

SteveSan

@BHD_CT The model number you supplied 007-BF5-J is a cast iron casing with the better cartridge assembly inside. Is your application hydronic heating or domestic hot water? So like Dave suggested if hydronic heating then 007e-2F2 or for domestic water then 007e-4SF. Hope this helps.

BHD_CT

Hydronic heating. Their model numbers are quite confusing. I'll be calling their tech support Monday with model and Ser. No. (if there is one) to confirm the whole situation.

Question on the 007e. The tech video says it cuts off when it senses a pressure drop from the last open zone closing off. What happens to the excess heat in the boiler? Is it wasted up the chimney unless I put a sensor there that keeps a zone open until the stack cools off?

hot_rod

The same happens when any circulator stops, heat is still in the block
if you have zone circulators , some of the new ECM models  will post purge

BHD_CT

hot_rod said:

The same happens when any circulator stops, heat is still in the block
if you have zone circulators , some of the new ECM models  will post purge

But with the Energy Kinetics System 2000 boilers the processor keeps the circulator running until the boiler has pushed all it's heat into the called zone. Only then does it close the zone valve and turn off the circulator. The TACO tech video seems to indicate that will be overridden by the 007e's own processor that will turn the circulator off when the pressure drops due to the zone stopping the call for heat.

BUT.......since the System 2000's logic won't shut down the zone valve until all of the boiler heat is pushed into the open zone, it seems that would keep the 007e running after all.

Am I over thinking this? Would the 007e be compatible with the System 2000 operation or not?

Thanks,
BH

EKornothing

The newer System 2000 EK1F ships with a 007E so I see no problem with you installing one on your boiler

BHD_CT

EKornothing said:

The newer System 2000 EK1F ships with a 007E so I see no problem with you installing one on your boiler

Thank you !
BH

Joe Mattiello

-J is typical OEM Equipment pump. As Steve mentioned cast iron casing equipped with SS, Noryl cartridge. Taco did this configuration years ago to minimize compromising internal cartridge assembly when boiler manufacturers wet tested their boilers. 

007e, is the 007 of the future with ECM technology to run more efficiently, analogues of LED bulbs replacing incandescent bulbs.
parts are not reverse engineered so you’ll have to replace entire pump. Shouldn’t be difficult, flange to flange dimensions are the same.