maintaining House temps

Re: maintaining House temps

PostBy: kenny007 On: Thu Jan 23, 2014 8:17 pm

Hello,
If you want give me a call I will try to help you out,
Ken 830-2670
ps what is you chimney setup? what is your stack temp???
Thanks
kenny007
 
Stove/Furnace Make: Stratford, Chappee
Stove/Furnace Model: SC-75

Re: maintaining House temps

PostBy: Rob R. On: Thu Jan 23, 2014 8:27 pm

Before everyone suggest a bunch of changes, please check and see how the aquastat is setup. If it is independent of the zone controls, it will just maintain the low limit setting. He said the low limit is set at 165....with a differential of ten the boiler would run 155-165 without any signal for a heat call.

One thing I am sure about, if the stoker isn't running all the time there is no sense increasing the feed rate.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: maintaining House temps

PostBy: whistlenut On: Thu Jan 23, 2014 8:49 pm

The radiation is Slant Fin I believe Dan said, and is all 3/4" copper feeds and returns. Grundfos Circs and the Circ controller that is wired independently of the boiler. Don, check to see if there is a jumper across the TT terminals on the Honeywell aquastat on the left rear of the unit. If not, as Rob said, it is running on the low limit for control. If it is not jumpered, please do so. No voltage issues, it is a dry contact. I heard that you may have a pressure reduction feed that is not working well, and allows extra water in very slowly (city pressure, not boiler pressure) and that is increasing the pressure in the boiler. I also heard that you are going to install an Amtrol 40X floor mount expansion tank. The only way to prevent the pressure increase is to shut off the feed valve to the boiler. and remove a little water to keep the pressure down to the 18 psi range. Back to the aquastat, I would suggest an increase to 185 and the diff of 10 degrees. The only thing you will want to keep an eye on is the pressure until the feed gets updated. I'd go back to 4.5 and 4.5 with the higher temp setting on the aquastat. You said there was a 2" ring and that is now gone, so you need to backtrack a little. Any idea about the coal you use? Rice I assume, but any idea who if comes from in PA? It sounds like the temp of the water circulating is the issue.
Change as few parameters as you can at one time, and make notes about what, when, and how much.
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: maintaining House temps

PostBy: mcguirehg On: Thu Jan 23, 2014 10:43 pm

TT not connected....I increased to 180
mcguirehg
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Stove/Furnace Make: Herman DVC 500 & EFM 520

Re: maintaining House temps

PostBy: stoker-man On: Thu Jan 23, 2014 11:29 pm

Yes, Sting is correct about the temperature of the return water once the loop is stabilized. My mind was thinking that until the system was stabilized, there would be alot of 66º water returning to the boiler.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: maintaining House temps

PostBy: Rob R. On: Fri Jan 24, 2014 6:04 am

mcguirehg wrote:TT not connected....I increased to 180


Are you getting warm? :)
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: maintaining House temps

PostBy: whistlenut On: Fri Jan 24, 2014 9:24 am

Remember that the increase in temp will increase the pressure slightly, so keep a close eye on the temp gauge and shut off the leaking feed water valve.
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: maintaining House temps

PostBy: mcguirehg On: Fri Jan 24, 2014 8:15 pm

The heat is up to 70 degrees. I will keep an eye on the thermostat to see the changes and recovery time. The TT terminal is jumped with a return to 4 feed and air. The shower water also appears hotter. The boiler temp is also higher and so are the radiators. . I do appreciate all the support and help. I must add it is a great boiler, I just need to learn the "tricks" of the trade. How long should it take the boiler to increase a 1 degree increase with a setting of 4, 4? I will keep an eye on the pressure.
mcguirehg
 
Stoker Coal Boiler: EFM 520
Coal Size/Type: rice
Stove/Furnace Make: Herman DVC 500 & EFM 520

Re: maintaining House temps

PostBy: Pacowy On: Fri Jan 24, 2014 8:40 pm

Good that it's working better. You still should be monitoring the ash ring, aiming to keep it around 2" wide after the unit has been running for 30-45 minutes. If the ring is too big, decrease the air a little, and vice-versa.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: maintaining House temps

PostBy: Mark (PA) On: Fri Jan 24, 2014 9:19 pm

oh.. what whistlenut said.. If you are adding pressure with a bad auto fill "SHUT IT OFF!"

Especially with running higher temp of 180...

Don't want your unit burping as well as the constant fresh water into your system introduces Oxygen to your lines and creates all sorts of bad things that shorten the lifespan of your piping/pumps/boiler and so forth.

A bypass valve/pipe is a piece of pipe that is usually near the Boiler that goes from the supply to the return with a valve in the middle. Normally the valve is set about half open and that is to "MIX" the incoming cold water from your return with the hot water leaving on the supply so as not to "SHOCK" the boiler.

Good luck! Sounds like you have things on the right track!
Mark (PA)
 
Stove/Furnace Make: 1953 EFM SF-520 High Boy
Stove/Furnace Model: Fitzgibbon Boiler