Best Of
Re: After two heating seasons freezing point of radiant heat system has gotten lower
a refractometer will work for both, just need a different scale for ethylene vs propylene glycol.
mattmia2
Re: Service for an old HydroTherm HC125B boiler in Westchester County NY
You've been dealing with salesmen rather than techs. Where in Westchester County are you located? We might know someone………..
Re: B+G Circ Pump making noise, coupler fine, bearing feels smooth
See, you dont want to fix it. Its a hobby. A wet rotor circulator should've gone in 6 days ago. And no heat the whole time? If the place is vacant, or there's another heat source, ok. But if the place is occupied with no alternate heat source... why?
HVACNUT
Re: Small Delta-T hydronic system
The question I would start with is, has it ever worked satisfactorily? If the answer is yes, let's focus on what has changed since it last worked. If no, that's a little trickier, we're looking at some sort of design issue.
The heat output of a radiator is given by the flow times the temperature drop. If the heat output is less than what is wanted, either the flow or the temperature drop has to increase. Generally, to increase the temperature drop you have to increase the water temperature.
If it worked at one time, my first suspicion would be flow has become diverted or obstructed. I would make sure the system was free of air before checking anything else.
Re: Should I add Cold air returns?
@Pumpguy You have to be cautious about returns in the furnace room. They (inspectors) don't usually go for that as it can mess with the combustion air
Re: Munchkin 140m troubleshooting FO9
F09 was a common problem with older Munchkins. Replacing the control board with the upgraded 926 board (part #7250P-731) usually resolves the problem.
I order mine from Jupiter Heating. Once you place the order, email them the model and serial number of the boiler so that they can program the board for your unit.
https://www.jupiterheating.com/htp/parts/7250P-731.html
Re: Radiators heating even though their zone pump is off.
what is the purpose of the rest of the piping on that mix loop? there are two tees and the supply continues out as well, is there more than one zone on that line? if so that lower pump is probably setup to energize when the mix circuit calls, that lower pump doesn't need to run at all when the mix loop is calling
GGross
Re: Oil Tank
@LDR as far as the Fill and vent pipes they can both be 1 1/4, or 1 1/2 or 2" but they have to be the same size.
In some locations in the old days the fill was 2" and the vent 1 1/4" but they changed that many years ago.
Re: Oil Tank
Any second hand tank will have problems since there have been tank bottom deposits building up from the first delivery all the way to the last delivery. How old is the tank? What is the condition of the outer steel tank? Is there stuff other than oil in the bottom of the tank?
The thing about steel tanks is that they rot and rust away from the inside as well as from the outside, so you really can't tell the condition without expensive testing which makes a new tank less expensive than testing an old tank. With the plastic inner liner of the Roth tank I would feel more comfortable with using that for a good long time if it is in good condition.
I would just take the time to thoroughly clean the junk out of the bottom of that tank. That would involve about 40 gallons of clean oil and a pump with a garden hose spray nozzle on the end of the pump’s discharge hose. Then I would take 10 gallons of oil and wash the bottom like I was spraying off the driveway with your garden hose. After that was done I then empty that oil and take 10 gallons of clean oil and repeat. Then another 10 gallons and repeat. By the time you get to 40 gallons you should have a clean tank. You need to suck out as much of the dirty oil from the tank as you can each time before adding clean oil for the nest wash.
The Roth Tank has special fittings on the top and they convert to standard 2” pipe thread for easy connecting to the fill and vent pipe, vent alarm and the top feed fittings.
Other than that, you just make sure it is on a flat level surface in your basement and install it like you would install an oil tank according to the code. It is a tank full of combustible liquid in your basement, you know. Do it right or don't do it at all.
