Recent content by Kdkull

Hello Fitter30, Question - A boiler guy said I can put the secondary pump on the return side provided I have the check valve in the supply side. This would make the pump install easier. Can you let me know.

Hello Fitter30, Question - A boiler guy said I can put the secondary pump on the return side provided I have the check valve in the supply side. This would make the pump install easier. Can you let me know.

I drained the system after removing the old boiler and got about 5 gallons. I'm thinking 1.75 gallons of the proper boiler glycol would give 35%. The old stuff ran about 3yrs and had a bit of black gunk (est < 1/2 gal) which settled to the bottom of the pail. I'm guessing this is the old...

What is recommended PVC 2" vent pipe for intake and exhaust above roof. NE illinois typical roof accumulation 6-15"

The manual mentioned a specialty formulated glycol only and not to exceed 30%. I am wondering if i really need anything at all. I live in NE Illinois? Also what is your recommendation on placement of secondary pump.

Once again thanks Fitter, the help you've provided is outstanding. Hoping to hang boiler and start the plumb this weekend. More questions.. 1) for the secondary pump - can this go anywhere after the expansion tank or will I need to make the secondary loop I described earlier and put it on the...

floor is poured concrete with most covered with 1/4" ceramic tile. I was thinking the boiler was still too big compared to my old one but believe it's the smallest Navien combi. A mechanical heating guy came over one day and then recommended this is the one he would put in.

Yes the 3 loop will be one zone. I don't recall what the old unit was running but hotter than 150. I'm thinking it was close to 160-180. If the fin radiant piece won't work on this system then i will just skip that and put a small wall heater in there. For the PEX secondary pump what would be a...

Hi Fitter - I have 3 rooms I'm heating with 1/2 inch PEX. 250ft/175ft/130ft plus I plan to tie in a 4ft piece of aluminum fin. The pex rooms are tied into 1" copper manifold which the supply side has 3 manual valves to adjust flow. Not sure if the Navien primary manifold was really needed but...

Thanks John, It is a new install and I was just going to connect up the supply and return lines to the boiler because it has a built in boiler pump but then I bought the Navien primary manifold for the hydronic heat which was pricey but included valves and seemed to may make install easier...

Thanks John, It is a new install and I was just going to connect up the supply and return lines to the boiler because it has a built in boiler pump but then I bought the Navien primary manifold for the hydronic heat which was pricey but included valves and seemed to may make install easier...

Thanks Fitter, I did buy a Manifold Kit for the 190/060H (part 30026576a) looks a little different from the link you sent but was the one in the manual. That's what i was thinking the internal pump might be used for (i guess it's called the primary loop)... it's been 45 years since I tackled...

I am installing a Navien NCB190/060h combi boiler and have several questions: - Can expansion tank (Extol EX30) be located below or should be above boiler. - Is a secondary circulation pump necessary or is the internal boiler pump sufficient - what is the auto feeding water connection and...