520 Firing Rate...

Post Reply
 
kzad
Member
Posts: 22
Joined: Sun. Feb. 17, 2008 6:56 pm
Location: Killingly, CT

Post by kzad » Wed. May. 21, 2008 8:03 pm

I have a question regarding the firing rate on the 520...the efm site lists firing rate as 2 1/2 to 25 lbs. of coal per hour...is that correct? 60lbs. a day seems like a lot in the spring/fall shoulder seasons, or just making domestic hot water.....

 
kzad
Member
Posts: 22
Joined: Sun. Feb. 17, 2008 6:56 pm
Location: Killingly, CT

Post by kzad » Wed. May. 21, 2008 9:07 pm

Ahhh, thats where the timer comes in Right?


 
User avatar
Scottscoaled
Member
Posts: 2812
Joined: Tue. Jan. 08, 2008 9:51 pm
Location: Malta N.Y.
Stoker Coal Boiler: EFM 520, 700, Van Wert 800 GJ 61,53
Baseburners & Antiques: Magic Stewart 16, times 2!
Coal Size/Type: Lots of buck
Other Heating: Slant Fin electric boiler backup

Post by Scottscoaled » Wed. May. 21, 2008 9:53 pm

Yes that's 2 1/2 lbs running nonstop or 25lbs running nonstop. Per hour. During a call for heat until the call is satisfied. Then the timer runs unit for 3 minutes per 1/2 hour or 3 minutes per 1 hour. Your standby rate can range from 6 lbs per day to 60 lbs per day at ten teeth. :) Scott

 
User avatar
e.alleg
Member
Posts: 1285
Joined: Fri. Feb. 16, 2007 10:31 am
Location: western ny

Post by e.alleg » Sun. May. 25, 2008 12:26 am

It will actually be a bit more than that on standby, remember any domestic hot water will pull the boiler temp down and so will standby heat loss anytime the outside air is less than the boiler water. Overall it won't use much in the summer, mine uses 15-20 pounds a day heating all my water and the heat comes on at night sometimes. I could get it tuned to use less in the summer but it takes a lot of fine tuning to save what amounts to little and then having to reset it during the fall and then again in the winter vs doing nothing and buying an extra 1/2 ton of coal for the year.

Post Reply

Return to “Stoker Coal Boilers Using Anthracite (Hydronic & Steam)”