Heat loss from CB6048

[swyman]

My run is 220' from the house, from inside, goes to hot water heater then furnace coil and back to boiler. I have the CB 1" thermopex. I have a 5 ton blower in my house and a buddy sized my coil by blower capacity. I have my boiler set at 185-195 and usually average 185 to 190 coming into house. I lose 50deg over the coil. I have a 014 Taco pump and was wondering if I up-sized my pump to the next series and increased the flow, it should lower my heat loss correct? I want to add 400sqft of floor heat and am concerned about my loop not keeping up. Anyone have any suggestions? I don't want to spend another $2500 for another pex run, I know I should have used 1 1/4" pex but we all know about hind site! I lose about 2-3deg between house and boiler.

 

[jmcguiretree]

sounds like the wrong heat exchanger..just a guess

 

[rob206]

My run is 220' from the house, from inside, goes to hot water heater then furnace coil and back to boiler. I have the CB 1" thermopex. I have a 5 ton blower in my house and a buddy sized my coil by blower capacity. I have my boiler set at 185-195 and usually average 185 to 190 coming into house. I lose 50deg over the coil. I have a 014 Taco pump and was wondering if I up-sized my pump to the next series and increased the flow, it should lower my heat loss correct? I want to add 400sqft of floor heat and am concerned about my loop not keeping up. Anyone have any suggestions? I don't want to spend another $2500 for another pex run, I know I should have used 1 1/4" pex but we all know about hind site! I lose about 2-3deg between house and boiler.

Air bubble maybe?

 

[blackdogon57]

I also have a 6048. I have 3 separate heat zones in the house and 2 in an out building. Also 2 Hot water tanks. ( 1 in each building) and a pool heater. All my pex is 1 inch. A manifold where your pex comes into the house with ball valves to contol flow should solve your problem. I just tweak the ball valves at the manifold to get the flow I want to each zone. Can't see a similar method wouldn't work for you.

 

[fletcher0780]

220' each way? Sounds to me like the pex is too small. You may not be able to get more flow with that 1" pex acting like a bottle neck.

 

[rick2752]

Is 1"in big enough for 150 ft? or should I go 1 1/4 when I install?

 

[fletcher0780]

I an 140ft each way and went 1 1/4"

 

[beerman6]

My run is 220' from the house, from inside, goes to hot water heater then furnace coil and back to boiler. I have the CB 1" thermopex. I have a 5 ton blower in my house and a buddy sized my coil by blower capacity. I have my boiler set at 185-195 and usually average 185 to 190 coming into house. I lose 50deg over the coil. I have a 014 Taco pump and was wondering if I up-sized my pump to the next series and increased the flow, it should lower my heat loss correct? I want to add 400sqft of floor heat and am concerned about my loop not keeping up. Anyone have any suggestions? I don't want to spend another $2500 for another pex run, I know I should have used 1 1/4" pex but we all know about hind site! I lose about 2-3deg between house and boiler.

How much lost after the water heater,before the furnace coil?

 

[swyman]

How much lost after the water heater,before the furnace coil?

I don't have a gauge after between the two. It's just the convection heat tube that CB sells. Once my water heater is up to temp I don't think it loses hardly any. This set up heats my house fine, just seems like almost a boiler shock with my return being 50- deg cooler. The only way I can think to fix this would be to increase the flow. I pulled a line off at boiler return and flow seems to be about 6-7 gal a minute. I figure if I went with a more powerful pump I should increase flow which in turn reduce heat loss. The numbers for my pump are much greater on the charts but this is my reality. I have not done the math for friction over distance and number of 90 deg turns which affect flow but it seems that more power should flow more.