Tekmar 4-way Valve question

ALH_4

Could it be that the valve is piped incorrectly?

Lots of good photos would help us tell.

David_2

Tekmar 4-way Valve question

I am baffled by the numbers I am getting. I have a Buderus G115 heating both a former gravity circulated radiator (lots of mass) and new radiant heat. I have a Tekmar 4-way which is intended to lower the temp to the radiant manifolds and I have a number of sensors on it to see what is going on. I see that the supply temp to the radiant is always the same as to the rest of the system. Right now I have it set at 50%. This gets to be a problem in the afternoons when the entire space is warmed up and the thermostats in the radiant areas shut off the circulators to keep them from overheating. What could be wrong?

David_2

See what I can do

Will have to be tomorrow though. I have taken the Tekmar diagrams down there and held it (after all, it is above my head) and it look right. Its in a primary/secondary, with a Taco 007 on the primary and the two 007's on the secondary.

Plumdog_2

Does it have an actuating motor?

Ted_9

??

If both zone 007's are on at full how will the primary loop 007 provide enough flow??

Rhetorical question here guys.

Massachusetts

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Timco

I have a p/s system working with a 007 pri circ and 3 15-58's running my secondaries. Modern Hydronics states that the pri circ does not have to equal the total flow of the secondaries.

Tim

ScottMP

what is controlling the Four way ?

> I have a p/s system working with a 007 pri circ

> and 3 15-58's running my secondaries. Modern

> Hydronics states that the pri circ does not have

> to equal the total flow of the

> secondaries.

>

> Tim



Do you have a Buderus 2107 control ? If so does it have a mixing card ?

How are you controlling the mixing valve ?

Scott

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ScottMP

what is controlling the Four way ?

Do you have a Buderus 2107 control ? If so does it have a mixing card ?

How are you controlling the mixing valve ?

Scott

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Ted_9

True, Timco

Yes this is true, but you may be using the low speed on all of you circs. I'll bet that this other install has 007's just because. No system design done.

You designed and planned for your set up. yes?

What happens if both radiant zones need 5gpm and your primary can only provide 5gpm? You'll only get 2.5 in each secondary 007, if they are running at the same time.

I don't know what his requirements are, but I do know there will be fighting for flow with that set up. It may be fine though. More info needed.

Massachusetts

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