to Taco company

Alan R. Mercurio_3

Off Topic:

I apologize for barging in on this post. Johnny White I have been trying to reach you to no avail. Would you be so kind as to e-mail me? Thank you sir :)

alanmercurio@oiltechtalk.com


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Unknown

to Taco company....

Asides from the other tread regarding the Taco zone valves and the transformer(s) wiring hookup... I often wondered why doesn't Taco make a powerhead with dry contact end switch that'll fits to the same valve body as the 571 unit... That way, we have a choice of using ethier model instead of using differnt brands...

John Abbott

Zone valve heads

Great idea. I wonder if any one from Taco moniters The Wall? If so they were silent on the great transformer controversy?

John White

monitor the wall

John,
I monitor the wall, as does Joe Mattiello. The product engineering group at Taco is, or will be, responding. I have already discussed with them.
Give it just a bit of time. Best regards,
jw

John@Reliable_14

John, What controversy?

> Great idea. I wonder if any one from Taco

> moniters The Wall? If so they were silent on the

> great transformer controversy?


For years we have used two transformers with out any problems, in fact I think Taco even made it easy, if you buy/use thier 24v transformers they color code one side so hook up is right.

John Abbott

Transformers

> > Great idea. I wonder if any one from Taco

> _BR_ > moniters The Wall? If so they were

> silent on the _BR_ > great transformer

> controversy? _BR_ _BR_For years we have used two

> transformers with out any problems, in fact I

> think Taco even made it easy, if you buy/use

> thier 24v transformers they color code one side

> so hook up is right.





I couldn't agree more however someone was adamant it couldn't be done that is the "controvesy" I was refering to.

John

Joe Mattiello

I have been monitoring the Wall, and seen the thread about the transformers in parallel. Taco has been paralleling transformers on the ZVC406 for years. The 40va transformers put out approximately 3.2 amps collectively which is well below the maximum amp rating for 18 gauge wiring. I visit the wall almost daily but use discretion which threads I jump in to. I provided my contact information if anyone has additional questions.

Joe Mattiello
Technical Support Engineer
Tel. 401-942-8000 X 484
Fax. 401-942-2360
1160 Cranston St
Cranston, RI 02920
joemat@taco-hvac.com

Joe Mattiello

The Taco 570 series 3 terminal zone valve has been around since 1969, and has an isolated end switch. Terminal 2 is a two fold terminal. The motor of the 571 is a heat motor. When the thermostat calls for heat, we energize an electric heater that is wrapped around a wax filled chamber through terminals 1, and 2. After approximately 1.5 minutes the end switch closes across terminals 2, and 3 emulating the thermostat to energize the boiler. The valve can be wired along with 4 terminal zonevalves with no problems. The suggestion for converting the 3 terminal to a 4 terminal has been forwarded to the product engineer for review. Thank you

Unknown

to Joe Mattiello

Thanks for the reply to this post.... Taco can keep the three termimals zone valve and make the new 4 terminals power head on the same valve body... Giving us the choices.... Alongs with better wiring dia.
Thanks again!