3 Zone's connecting to one Control Center + 3 thermostats

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  #1  
Old 01-11-12, 09:31 AM
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3 Zone's connecting to one Control Center + 3 thermostats

I have a 3 Floors with separate heat. Top, Main, Basement. I bought the house with only (1) 1/2" zone valve for the top floor. I would like to remove that zone valve and install it with a 3/4" Zone Valve, (as I have all 3/4" copper pipe) as well adding 2 addition 3/4" Zone Valves for the Main floor and Basement.

But the other problem is connecting them all to one Control Center. As of now I have 2 thermostats installed, 1 zone valve, and all connected to the control center.

When heat is called for the top floor, the zone valve opens and heat goes through all 3 levels.

When heat is called for the main floor, the top floor zone valve is closed and gets no heat. But the main floor and basement gets heat.

The basement has a thermostat, but it is not wired up, so it can not call for heat. Only getting it when either the top floor or main floor calls for it.

So this is why I want to install 3 new 3/4" zone valves. One for each level. Than have them all connected to their own thermostat and all connected into the Control Center. I was just quoted for $1000 to do this. I thought that this was high and I could try and do this myself.

Here are some pics.
Boiler pictures by Q-Ball23 - Photobucket
 
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  #2  
Old 01-11-12, 01:30 PM
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I'm going to suggest you get one of these to simplify the wiring.

Taco-Hvac: Zone Valve Control

It's a zone valve control module. Using it, you'd only need to run 2 wires to each thermostat, and the wires to each zone valve. It makes the wiring neat and EASY.

Only one connection is made to your boiler TT terminals.
 
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Old 01-11-12, 03:18 PM
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I agree with Dan's choice... use a Taco ZVC... piec'o'cake

I would like to remove that zone valve and install it with a 3/4" Zone Valve,
It's a working valve? Leave it alone. It ain't broke, don't fix it. Chances are you don't need a ton of flow up there anyway, what's the heat loss of the space? If it breaks, and you wanna change out the valve instead of slapping a new head on it, change it then.

But do install the valves on the other two floors.

Your pump will remain wired to whatever it is currently wired to, but you do have the option to move the pump wiring to the new panel as well. That's optional.
 
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Old 01-11-12, 03:26 PM
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You really don't need anything but the three zone valves and a 24v transformer. A thermostat to each zone valve and daisy chain the end switches back to the thermostat connection on the boiler.
For more zone valve info see link
Zone Valve Wiring
 
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Old 01-11-12, 03:32 PM
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That's true! But I just love them Taco panels... I just think it makes the wiring so much easier.

I use this drawing a lot... explains how to hook up basic system. If you need more valves, just add them to the right side. A standard 40VA transformer will easily run three valves.

(rbecks drawing is good too! and all the other types of valves are on there as well.)



This is for the Honeywell style valves with isolated end switch, 4 wires.

Hooking up the 3 wire variety like the Taco, is just as easy.
 
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Old 01-11-12, 04:37 PM
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aandpdan

I'm going to suggest you get one of these to simplify the wiring.

Taco-Hvac: Zone Valve Control

It's a zone valve control module. Using it, you'd only need to run 2 wires to each thermostat, and the wires to each zone valve. It makes the wiring neat and EASY.

Only one connection is made to your boiler TT terminals.
I really like this idea! I have a Taco air separator and it works well. I am quite handy with all my reno's, but I felt like I was getting over my head with all this rats nest of wiring. I have done all the plumbing when installing the Taco air separator, wasnt that hard.

NJ Trooper

I agree with Dan's choice... use a Taco ZVC... piec'o'cake

I would like to remove that zone valve and install it with a 3/4" Zone Valve,
It's a working valve? Leave it alone. It ain't broke, don't fix it. Chances are you don't need a ton of flow up there anyway, what's the heat loss of the space? If it breaks, and you wanna change out the valve instead of slapping a new head on it, change it then.

But do install the valves on the other two floors.

Your pump will remain wired to whatever it is currently wired to, but you do have the option to move the pump wiring to the new panel as well. That's optional.
The reason I want to swap it out, as this place is a rental apartment. I've had a few tenants complaining about heat, this is why I really need to install a zone valve for the basement apt. I was told there is a lot off loss of flow, so I'd like to make it right. It's just not something I want to hear complaints in the future.

It's working the way it is now, just no properly, or I should say efficiently.

rbeck

You really don't need anything but the three zone valves and a 24v transformer. A thermostat to each zone valve and daisy chain the end switches back to the thermostat connection on the boiler.
For more zone valve info see link
Zone Valve Wiring
I think thats how its setup now. So my current transformer/control center would be fine to dasiy chain these? I used to electronics in school, little bit of wiring at work, but that diagram overwhelms me.

NJ Trooper

That's true! But I just love them Taco panels... I just think it makes the wiring so much easier.

I use this drawing a lot... explains how to hook up basic system. If you need more valves, just add them to the right side. A standard 40VA transformer will easily run three valves.

(rbecks drawing is good too! and all the other types of valves are on there as well.)



This is for the Honeywell style valves with isolated end switch, 4 wires.

Hooking up the 3 wire variety like the Taco, is just as easy.
That seems a lot easier! Ya my current honeywell has the 2 sets of red and yellow wires. What are these for? I see it somehow connects to the wiring to the top floor thermostat, tapped into the transformer, etc. I would like the Taco if it will make it easier for me. But if I can do with it out, someone please show me how with the wiring colours. Thanks, this forum is great!
 
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Old 01-11-12, 05:08 PM
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Ok, so here's my new diagram.



Now how do I label the colours? Out of my Honeywell zone valves are 4 wires, 2 red and 2 yellow. I was trying to colour it to my diagram, but cant figure it out. Does it work just as simple with positive + and negative - ?
 

Last edited by Q-Ball; 01-11-12 at 05:53 PM.
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Old 01-11-12, 06:20 PM
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On the Honeywell valves, the MOTOR is YELLOW and the ENDSWITCH is RED.
 
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Old 01-11-12, 06:31 PM
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So my current transformer/control center would be fine to dasiy chain these?
Ummmm... If you mean what I think you mean, then NO... or MAYBE...

Let's back up here though... because I only just now went to look at your pics... I thought I understood what you have there, but after looking, realize that I don't...

I do not understand why that control center was used. What is running from the relay?

To where is the system circulator wired?
 
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Old 04-19-12, 05:25 PM
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Sorry for the late reply. I am still planning on doing this, but now waiting for the summer. The basement loop, I just added an electric baseboard heater for temporary use.

So now back on topic. I really like that all in one unit. I am still going to go with 3/4" Zone valves.

I want everything to connect into that Taco SVC Taco-Hvac: Zone Valve Control

This is what I mean to connect everything together.
 
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