130' run is 1 inch pex adequate?

[goosegunner]

Things I want to supply with 1" supply lines from OWB 130' from manifold in my garage.

I will have a primary pump in the garage and a pump for each zone.

1. Water to air exchanger in basement furnace.(this will be below the grade of the manifold)

2. Plate exchanger for DHW.

3. Garage heater/ pool heater (bypass and use same pump in summer for pool instead of garage.

I have a 76,000 BTU forced air furnace right now that heats the house fine.


Will the 1" pex to the manifold be large enough to get needed heat?

What about in the summer? When I run a 180K to 210K shell and tube exchanger, What kind of output can you get?

gg

 

[Scootermsp]

Based upon my dealings with my CB dealer last year, the 1" line should be fine. Make sure you use at least a Taco 009 on the OWB.

 

[Windwalker7]

My run is 133' from OWB to HX in plenum.

I have 1" lines.

It works for me!

 

[ericjeeper]

130 feet is ok for 1 inch. Providing you have enough BTUS to start with. What is your demand?
Just make sure you insulate the pipe the best you can. That is where you could lose everything.

 

[Slick]

Like everyone said, check the btu's, that's where you need to up the size not the length of run.

 

[goosegunner]

I am not too worried about heating the house. My 76,000 BTU input LP furnace heats our house with no problem. It is 12 years old insulated well. 1600 square feet main level with 1200 sq ft of the exposed lower level finished.

It is the pool I am wondering about. Does it even make sense to buy a 210 Btu exchanger? The connections for heat lines are 1 1/2" and feed it with 1" lines?

The 180K btu has smaller line connections.

gg

 

[ericjeeper]

I would just buy the one plumbed 1 inch.I am hoping that pool is either indoors.Or you are planning on using it in the offheating season.

 

[goosegunner]

I should have been more clear.

The pool is used only in the non heating season. It is outdoors, I just bought a used Taylor 450 with the intention of heating the pool from about May 15th to Sept 15th.

The pool stays close to temp we like most of the time but it would be nice to go a few degrees warmer. And also be able to bring it back up when it gets knocked down to 75 degrees after a few cool rainy days.

I have now decided as long as I have the thing sitting in the yard I might as well heat my house and water with it during the heating season.

gg

 

[Mogollon]

Most heat exchangers are rated at 180f input. I find that an OWB runs quite a bit of the time a lot less than that and an "oversized" heat exchanger either flat plate or coil will extract the most from the boiler.

 

[blackdogon57]

I have similar set up. CB 6048. 120' 1" Insulated pex underground to manifold in basement where forced air furnace for upstairs (2800 square feet), 60 gallon shell and tube DHW, separate rad/blower for 1800 square foot basement apartment, and additional 35' run through basement to garage with 100K BTU rad/blower and 300K BTU flat plate pool heater. These all run from one Taco 009 located at boiler.

A separate loop runs 30' underground from boiler with insulated 1 inch pex to a separate 1200 sqare foot building where there are two rad/blowers and a 45gallon shell and tube DHW. This runs from sparate Taco 009 at boiler.

Have had this system in place for two full years with no problems. Pool is 15000 gallons. Be prepared to burn a crap load of wood when your pool heater is running. The boiler water goes into the HX at 180 and comes out stone cold.

You should have no problems using 1 inch pex if it is insulated properly.


Good Luck !

 

[KYDave]

It might be enough.

I have a 189' run from our owb. We feed two seperate house furnaces and one domestic water tank. But, I ran six pipes to feed all this. Each furnace has two pex pipes, 1" each, and the water tank has two pex pipes, 3/4" each. Each unit has it's own taco 13xx pump.

David Breeze

 

[goosegunner]

I have similar set up. CB 6048. 120' 1" Insulated pex underground to manifold in basement where forced air furnace for upstairs (2800 square feet), 60 gallon shell and tube DHW, separate rad/blower for 1800 square foot basement apartment, and additional 35' run through basement to garage with 100K BTU rad/blower and 300K BTU flat plate pool heater. These all run from one Taco 009 located at boiler.

A separate loop runs 30' underground from boiler with insulated 1 inch pex to a separate 1200 sqare foot building where there are two rad/blowers and a 45gallon shell and tube DHW. This runs from sparate Taco 009 at boiler.

Have had this system in place for two full years with no problems. Pool is 15000 gallons. Be prepared to burn a crap load of wood when your pool heater is running. The boiler water goes into the HX at 180 and comes out stone cold.

You should have no problems using 1 inch pex if it is insulated properly.


Good Luck !

I didn't think you could run that much stuff off one pump. I was thinking that I would do the 130' to pump through manifold. Then hit each zone with their own pump.

What kind of temp gains can you get on your pool per hour?

gg

 

[leon]

1" pex run to house/pool

If you do anything be sure to use the styrofoam insulated tubing that covers the two pex lines feeder and return as it is the best insulated pipe to use. It is expensive but it has near zero heat loss and some of the folks leave it on the ground until they want to bury it later- there are several posts on it on this part of the forum.

type insulated PEX tubing in the search box and it should pop right up.

leon opcorn:

 

[blackdogon57]

I didn't think you could run that much stuff off one pump. I was thinking that I would do the 130' to pump through manifold. Then hit each zone with their own pump.

What kind of temp gains can you get on your pool per hour?

gg

Depends a lot on outside temp. I use heater mostly in spring and fall. Takes a couple of days to get it up to 85 from 60 in the spring. In the summer if the water temp drops to 70 or so it my take 12 hours or so to get back up to 85.I then run it a few hours a day as needed to maintain temp at 80-85.

 

[goosegunner]

Depends a lot on outside temp. I use heater mostly in spring and fall. Takes a couple of days to get it up to 85 from 60 in the spring. In the summer if the water temp drops to 70 or so it my take 12 hours or so to get back up to 85.I then run it a few hours a day as needed to maintain temp at 80-85.

Doesn't sound too bad. Our pool is also 15,000 gallons. It will be nice to bring it back up after cool spells. Sounds like it might take a little planning though.

gg

 

[Marklambert61]

BTU's

1" pex will flow about 80,000 btu's that fine for your house. However will never be enough for the pool...

Mark

 

[goosegunner]

1" pex will flow about 80,000 btu's that fine for your house. However will never be enough for the pool...

Mark

So what is the solution then? 4 lines?

 

[blackdogon57]

Check with a pro. As I posted above, my 1 inch pex feeds a big system, has had no issues since installed, and was installed by a CB dealer who does a ton of installs.

 

[goosegunner]

1" pex will flow about 80,000 btu's that fine for your house. However will never be enough for the pool...

Mark

Also wondering why people are putting 120,000 to 140,000 air to water exchangers in their forced air furnace when most people seem to be buying and using 1" pex for their underground lines.

Am I missing something here?

gg

 

[John D]

Also wondering why people are putting 120,000 to 140,000 air to water exchangers in their forced air furnace when most people seem to be buying and using 1" pex for their underground lines.

Am I missing something here?

gg

Yes,you want an oversized exchanger,as many times,the OWB temps are lagging between 150-170 degrees.Most are rated at 180 degrees.besides if your exchangers are bigger,you can run the OWB cooler,which will save a ton of wood,and give faster recovery times.