Replacing Taco 007 with a variable circulator

pesiroil

hello, I am an electrician and was hoping I could get some advice from yall. Currently have a gas fired hot water system with 4 zone valves and a taco 007-bf5-j circulator.
I started having issues a couple weeks ago with zero water flow through my basement zone and was positive it was an air-lock in the pipes, after many many attempts of getting this airlock out and failing i decided it could be another problem.
i took an amp reading on the circulator and its pulling 1.1amps and the nameplate says .76amps. Out of the three zones the basement is the most complicated and creates a larger head loss then the other two zones. The other three zones are very close in proximity and straightforward zones which apparently the circulator had no issues with.
I could do the easy fix and just replace it with the same circulator, but im reading up on variable speed circulators im willing to pay the extra for the right cireculator and wanted to know if i would have any issues. I also have an aquastat controller that my current circulator is wired to is it the same type of wiring or is there a a type of lowvoltage control wiring needed?
Also delta T or delta p, and is there any variable circulators you would recommend?

lchmb

https://www.taco-hvac.com/products/variable_speed_products/vr2218/index.html
I'm a fan of a nice delta t pump myself. I've used them in many applications and have heard nothing but good savings...

BBros

The ECM pumps run 120V same as the 007. Easy to swap out, no additional controls/wiring. Zero issues for you on that front.

Joe Mattiello

007, the most popular of 00 family of pumps, has a relatively flat curve, is readily availability, robust, and engineered for easy replacement of cartridge assembly when it fails. Your amp reading of approximately 1.5 X nameplate indicates a locked rotor condition. Replacing the cartridge 007-042RP is the easiest, and least costly fix.
However, if you’re interested in the latest and greatest high efficiency innovations, Taco 007e should be considered. Its performance is equal to 007, but uses up to 85% less electricity making it a great economical upgrade to your system. 007e constant pressure curve makes it ideal for a multi zonevalve dynamic system, reducing velocity, erosion, and noise.
Attributes; ECM technology delivering high efficiency, Bio barrier minimizes fouling, Integral flow check, and Sure-start technology which continuously jogs pump shaft to prevent locked rotor, all of which makes 007e a wise choice. Hopefully this helps you make an informed decision. For your convenience, I provided a link to catalog.
http://www.taco-hvac.com/uploads/FileLibrary/100-123.pdf

Dave H_2

pesiroil,

I am assuming that this system has worked for a long time already with the existing 007?

If so, the reason you may not be getting any heat in the basement is because of gravity flow. The basement loop is below the boiler whereas the other zones upstairs are getting heat, but probably not at the same rate as before. The zone valve opens and hot water will naturally rise.

The amp reading does indicate that the rotor is not rotating and is locked. The 007e as Joe mentioned above would be perfect for your system if the original 007 worked just fine in the past.

If what you are saying that the developed head in the basement zone is larger than what the 007 or the 007e can handle, thrn I would look into the VT2218, Delta T circulator. It can handle higher head projects and wires the same except for a couple of temperature sensors.

Dave H.

servicetech55

Dave,

I know this is an old post but did not want to create a new subject line/topic.

I liked your thoughts on basement loop being lower than boiler and upstairs zones also higher.

I currently am running an 007-F5 pump which is super hot and possibly seized up . Cool on the housing side.

Changed out boiler to a Navien 210E when my other boiler failed.

outside temp -28 C and need to keep basement zone temp lower than the 2 upstairs zones otherwise internal Navien pump can’t keep up sufficient flow. If set equal or higher basement sucks up all the heat.

I’m thinking 7e model being variable and quieter might give a better water flow rate to all 3 zones if the demand for all 3 is calling for heat.

Question: are the flange mounts identical between 7E and 007-F5 allowing to just swap out the motor head and not having to change flange?

Would make swap easier for this scenario.

Joe Mattiello had mentioned in the post that 007e was quieter and used less power hence thought to upgrade this 17 year old pump.

Your thoughts and any model number I need to order would be appreciated.

Would like to do the change this weekend if I can order pump in or get from a supplier in Ottawa.

Thanks RobF

SteveSan

https://forum.heatinghelp.com/discussion/comment/1840042#Comment_1840042

The 007e and 007-F5 are both 6 3/8" flange to flange.

You can order either 007e-2F2 or 007e-2F4. The first is standard flange and 2F4 is universal flange.

Dave H_2

@servicetech55 As Steve and Joe have said, yes, the 007e will fit in the exact same spot.

However, it may easier for you to get your hands on a 0015e3 in Canada and it fitr in the same spot and when you put it in Medium Setting, it is the same operation as a 007e

servicetech55

Thanks Dave !

Sourced on-line as Local distributors don't seem to stock much here for some reason.