Print

[slimjim]

Yes It is

[wissel12]

I have the same set up with inside boiler.  The temp in the house is staying where it needs to be.  I don't have a wrap around pump.
Should I install one, even though my temps in the house are good.  The only thing I notice is that when the pumps circulate the water from the baseboards, that the temp across the hx drops to about 25 diffs. It comes back up in about 30 sec to a minute. Then runs 10 degree drop across hx.  It's the cooler water coming down from the loop.

[abide]

Okay...So the way I understand it my lack of a "wrap around pump" is what is causing my internal temps to be so low.  If I install a wrap around pump and make sure the outdoor temp is 10 degrees or so more than the internal hi temp limit this should take care of the issue.  The next issue is my underperforming underground lines.   

[slimjim]

LOGSTOR!

[hondaracer2oo4]

Lets get your indoor issues figured out and then we can move on.

[willieG]

very little stoarage at the indoor boiler leads to OWB pump must at least match indoor boiler pump gpm. i doubt the taco 11 can manage that with the restriction of the 3/4 inch underground lines

[slimjim]

Very good point willie.

[Sprinter]

First of all, RUN THE PUMPS CONSTANTLY, this will allow the oil boiler to heat up, those cast iron rads hold a lot of water and when that returns to the oil boiler it will cool the boiler very fast and your wood boiler loop will suffer from it, do us all a favor and run the loop pumps constantly or you are begging for troubles.

If the little indoor boiler can keep up with the CI Rads, why can't a much larger OWB keep up?  Man I love those old Rads with the bread warmer box.....

[willieG]

i agree, run the pumps constantly..you may only have low return temps when the nights are very cold..even though your indoor boiler is rated at 120,000 btu, you likely rarely get that demand.  if you are sending in 7 gpm you should be able to deliver about 30 btu per square foot and still have decent return temps

[abide]

I was on the Shaver website and they illustrate connecting their system up to a pressurized indoor boiler the same way that mine is connected.  Of course Central Boiler illustrates using a wrap around pump.  Should I disregard Shaver's suggestions?...I think I already know the answer to that. 

[hondaracer2oo4]

Shaver shows an option but that is not the only option. One option doesn't work for every instance.

[abide]

I had my energy audit today and it was very eye opening.  Basically they try to create a negative indoor pressure of 50 pascals.  For my home they were only able to achieve 30 pascals before maxing the fan out.  We walked around the inside with the thermal imager and noticed many areas that are pouring in cold air as well as a few wall cavities and one ceiling without insulation.  I still don't think my OWB is behaving ideally, however, the house is much less insulated than I initially believed.  After a trip to the hardware store I will spend tomorrow sealing some of the larger issues we discovered.   

[hondaracer2oo4]

Abide, I am glad that you did the blower door test and the TIC. Those are very valuable tools to find where your problems are. Hopefully you will be able to seal up all of the areas you found and insulate better. Hopefully you can get us some of the temps we asked for and we can help you on your way to getting things working right!

[Coach]

I'm not sure what is going on with your wood burner, I can tell you I have a 290 Shaver and it heats my son's house and mine ... Two houses plus our domestic hot water , and has been doing so since 2008/.  We have saved a lot of money...........Hope you get it figured out.....It's really not that bad of a stove.