Hi,
An issue has come up with how to rezone part of my home properly.
Briefly I had an Alpine 150 installed in my home about a year ago. It was way oversized as the heat load ,not done by the plumber, came in at 60K. After showing him the numbers he agreed to replace it with an 80. He brought the boiler over yesterday and we discussed changing some things.
There were 3 zones on the downstairs initally. All zones are fed with 007 circulators. I tied two of the 3 downstairs zone circulators to one thermostat and had very even temps in those rooms during the colder days. It was an attempt to unload the boiler more. Part of what my plumber is doing is to replumb those 2 zones as one. That has created differences on how to do it which leads to the question.
Right now there is one line, a 28' run of 1" that splits and receives water from the 2 zones running each side of the house. One loop has 51' of bb and 41' of 3/4. The other has 42' of bb and 30' of 3/4. He wants to tie the two loops together where they split and eliminate the 28' 1" then feed it as a single long loop. I don't like the idea because if I shoot for a 20* D/T the last portion of the loop is going to be getting much cooler water and resulting, me thinks, in uneven heating. I want to keep it as is except feed the water to the 28' 1" and tie the two returns together making it 2 parallel loops abit with different head values. Put a circuit setter or something in the shorter loop to equalize the flow and it should work, I think. He sees my reasoning but not sure he agrees with it. What do those of you with far more experience than I think?
Tom
An issue has come up with how to rezone part of my home properly.
Briefly I had an Alpine 150 installed in my home about a year ago. It was way oversized as the heat load ,not done by the plumber, came in at 60K. After showing him the numbers he agreed to replace it with an 80. He brought the boiler over yesterday and we discussed changing some things.
There were 3 zones on the downstairs initally. All zones are fed with 007 circulators. I tied two of the 3 downstairs zone circulators to one thermostat and had very even temps in those rooms during the colder days. It was an attempt to unload the boiler more. Part of what my plumber is doing is to replumb those 2 zones as one. That has created differences on how to do it which leads to the question.
Right now there is one line, a 28' run of 1" that splits and receives water from the 2 zones running each side of the house. One loop has 51' of bb and 41' of 3/4. The other has 42' of bb and 30' of 3/4. He wants to tie the two loops together where they split and eliminate the 28' 1" then feed it as a single long loop. I don't like the idea because if I shoot for a 20* D/T the last portion of the loop is going to be getting much cooler water and resulting, me thinks, in uneven heating. I want to keep it as is except feed the water to the 28' 1" and tie the two returns together making it 2 parallel loops abit with different head values. Put a circuit setter or something in the shorter loop to equalize the flow and it should work, I think. He sees my reasoning but not sure he agrees with it. What do those of you with far more experience than I think?
Tom