New install circulators vs zone valves

New install circulators vs zone valves

PostBy: Salemcoal On: Mon Mar 20, 2017 7:55 pm

Finally installing stoker boiler in cellar this year instead of detached garage. It will be 3 zones plus indirect . I already have a brand new taco 6 zone controller I plan to use . Local forum member recommends hydrostat 3250 with one circulator and zone valves. Any recommendations on some of these new variable speed circulators? Wondering if this is a better route than zoning with circulators and the Honeywell 8124 triple aqua stat that I already have. Thanks
Salemcoal
 
Stove/Furnace Make: 1960 efm 520
Stove/Furnace Model: Harman Mark II


Re: New install circulators vs zone valves

PostBy: BunkerdCaddis On: Mon Mar 20, 2017 9:41 pm

When I set out to revamp the zoning and boiler piping in my house I had originally figured on 6 zones with circulators. The Taco Viridian pumps where just coming out (in fact they were a pre-order) so I decided to check into them and zone valves. I ended up going with the Viridians and really like them. I have 4 zones on one and 2 zones on the other and they are set up for a delta-T configuration. Other than initial spin up they run at a very slow speed and I never hear them. Really very happy with my decision to go with them.

edit for link to >> http://www.supplyhouse.com/Taco-VT2218- ... ndard-120V
BunkerdCaddis
 
Hand Fed Coal Boiler: New Yorker WC-90 or more likely a Van Wert VW85H [to be installed (soon, very soon)(well not as soon as I had anticipated]
Hand Fed Coal Stove: Waterford 105 pulling duty, Saey Hanover II getting dressed for the party
Coal Size/Type: pea/nut
Other Heating: oil fired hydronic

Re: New install circulators vs zone valves

PostBy: Rob R. On: Tue Mar 21, 2017 5:35 am

Local forum member recommends hydrostat 3250 with one circulator and zone valves.


That is what I recommend also. I have been running a 3250 on my EFM for a few years, and it does a great job of keeping the boiler temperature very stable and not running up to the high limit when a small zone calls for heat.

[quote=]Any recommendations on some of these new variable speed circulators? [/quote]

I have a Grundfos Alpha on my system, and it is hooked up with 4 zone valves. The system is super quiet, and it eliminated the noise I was having before with the Taco 007.

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Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: New install circulators vs zone valves

PostBy: David... On: Tue Mar 21, 2017 7:29 am

I use a Taco Bumble Bee criculator. It was their first variable speed small circulator. It's a little noisy, but it works well. Their newer circs. appear to be quieter. One advantage of zone valves is they use less electricity.

David
David...
 
Hand Fed Coal Stove: Chubby clone
Coal Size/Type: Nut
Stove/Furnace Make: Penn

Re: New install circulators vs zone valves

PostBy: coalkirk On: Tue Mar 21, 2017 7:45 am

Not to be a contrarian but zone valves fail much more frequently than circulators.
coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: New install circulators vs zone valves

PostBy: Rob R. On: Tue Mar 21, 2017 7:54 am

I have heard that also...But it has not been the case for me or my dad.

My Honeywell zone valves are 25 years old, and still work fine. Dad's zone valves are about 10 years old, and have never had an issue.

Both of us have had to replace a few circulators.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: New install circulators vs zone valves

PostBy: lsayre On: Tue Mar 21, 2017 8:20 am

Taco 'Zone Sentry' zone valves have been serving me well. Less expensive than the older 'heat motor' style zone valves, and less costly to operate.

http://www.taco-hvac.com/products/hydro ... index.html

Here is an (admittedly pricey) idea for a new variable speed ECM circulator. I believe it is made in the USA, its body is cast iron, and it claims to be more efficient than any of the foreign made ECM alternatives (drawing 5 to 38 Watts).

https://www.amazon.com/AquaMotion-AM55- ... B01F73LXMS
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)

Re: New install circulators vs zone valves

PostBy: CoalJockey On: Tue Mar 21, 2017 9:32 am

I've been using Taco zone valves here for years on a single circulator with minimal problems. The newer style motor heads are a lot more reliable than the older ones were, I think someone else stated that too.

I like the zone valves as opposed to individual circulators because if one of the valves fails, you just pop the old motor off and snap the new one on, the valve stays permanent. No tools required, takes longer to put on your socks, and no mess whatsoever. :)

Again though, to each their own.
CoalJockey
 
Stoker Coal Boiler: (2) EFM 520's, 900, 1300
Hand Fed Coal Stove: (2) Warm Morning Stoves