Best Of
Re: Street 90 in gas piping
In the Chicago suburbs the local gas company has street 90's going into most meters.
Neild5
Re: sizing copper pipe
I don't know about high school chemistry but like I said my generator is rated 10kw on LP and roughly 8kw on natural gas.
ChrisJ
Re: sizing copper pipe
A given volume of propane gas at equal pressures has about 3x the energy content of methane. I don't know why the output ratig of equipment under propane is less than methane but i suspect it burns at a lower temp.
mattmia2
Re: Why are gas furnaces designed to retry if ignition fails?
Full Remote control !
Just like the 50 "Dis"ConXus that we installed and have had many issues with for Years !!!!
Full Remote control !…One of the additional benefits is that it actually will turn the heat to the house »»OFF «« while trying to adjust the "Ramp delay" and the "Mod factor" remotely !
On two unrelated sites in Blue River Colorado i personally had to drive a half hour to the customers home and physically turn the boiler back on othervise the homes would have Frozen !…Your Welcome Lochinvar !
Yet Lochinvar cannot fix this issue or is being held hostage by a programmer that does not even understand the first thing about Hydronics maybe He/She/They/Them does not even care !
To top it off: even though we were very polite and hope that the conversations are recorded for training purposes.
On the Last call to Lochinvar the technician was giving us ill advise,told us that we are "Barking up the wrong Tree", Stated that Lochinvar does not manufacture the ConXus and is therefore not responsible for it not working as intended,Told us that this conversation is not going to go anywere and disconnected himself from the request for help…
Nice Customer Service LOCHINVAR !
Re: Bypass for a Buderus G115/3 boiler?
I doubt 2 gpm is going to heat well with the oversized piping. Air removal will be difficult as well as distribution.
I would do primary secondary with a pump on the house loop equal to what your pumping now because you know that is enough flow. Then an injection loop from the boiler to the house loop. The primary secondary will help keep the boiler return up but you still need a valve to control return water temp. I would put the house pump on an OA sensor and let it run. The injection pump will feed the house loop as much as possible to keeping the return temp where it needs to be. With the house loop pumping more than the boiler primary pump and the injection the water in the house loop will always flow in the right direction across the closely spaced tees.
Re: She canna take any more, Cap'n! She's gonna blow!
That was installed last fall so I don't think that's the problem right now.
Re: Need help balancing steam system
To check the pitch, measure down from the underside of the floor (ceiling) overhead if you can. It's usually more accurate than measuring up from a basement floor.
Re: Vapor balancing? Dead Men question.
Others i think vent the mains through the emitters and the dry returns which probably works ok because the mains are much smaller than in 1 pipe systems.
mattmia2
Re: She canna take any more, Cap'n! She's gonna blow!
You don't have enough air in your expansion tank
Chang your procedure for adding Air to the tank as follows.
Here are the steps I followed:
- Shut off power to boiler.
- Close the valve from the boiler to the tank.
- Close the valve from the water supply to the tank.
- Open the valve below the tank and drain the tank.
Open the Airtol fitting and also the valve to the water supply.Fast fill the tank until water starts to come out of the Airtrol.Close the valve to the water supply and close the Airtrol.Set the desired pressure in the tank using a Schraeder valve connected to the bottom of the tank.- Close the valve that drained the expansion tank
- Open the valve from the boiler to the expansion tank
and the valve to the water supply.- Allow the automatic water feed to get the system pressure up to 12 PSI (needed to fill those third floor radiators)
- Restore power to boiler.
If you have 100 gallons of water at 40° and you heat that water to 200° you end up with about 104 gallons of water. The air in the expansion tank is where that extra water goes. If there is only enough room for 4 gallons of water in that tank then the air will compress to 100 PSI or more. If there is 8 gallons of air space in that tank, then the opressure may only rise to 35 PSI. (still to high for that relief valve). But if you have 15 gallons of air in that tank then the 4 extra gallons of water will compress that 15 gallons of air to maybe 18 PSI (because there is more air to compress) so if there is 18 or 19 gallons of air space in that tank, the pressure will only rise from 12 to maybe 16 PSI.
The more air in the tank the lower the pressure will be when the water gets hot. The only thing you need to do is add air to the expansion tank.
By the way @pecmsg was referring the the pre-charged expansion tanks. You don't have one of them, so you would be confused by his statement. It does not apply to your system.
