Bock Hot Water Heater Flue Temps

Re: Bock Hot Water Heater Flue Temps

PostBy: BIG BEAM On: Sat Sep 06, 2008 10:24 pm

Yeah thoes uticas had steel base and cast iron boiler if I remember.That bock will last 30 or 40 yrs.(if you can afford the oil) and they do make a LOT of hot water.
DON

You can try firing the bock with a .5 nozzle.It prolly has a .65 or .75 in it.That does help some with eff.And it will still make a LOT of hot water.
BIG BEAM
 
Stove/Furnace Make: USS Hot blast
Stove/Furnace Model: 1557M

Re: Bock Hot Water Heater Flue Temps

PostBy: traderfjp On: Sat Sep 06, 2008 10:45 pm

Thanks. I'll give the smaller nozzle a try. Maybe you can answer this. When I had the thermostat on the HWH turned to about 110 my wife complained that the first shower in the house was warm but not hot then after that there wasn't a problem. My theory was that the tank cooled over nite and 110 wasn't hot enough but after she draws some water off the tank and it fires the burner probably heats the water hotter than 110 but eventually so the 2nd person who showers has hotter water. Does this make any sense?
traderfjp
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing 3

Re: Bock Hot Water Heater Flue Temps

PostBy: SMITTY On: Sat Sep 06, 2008 11:32 pm

My indirect-fired hot water tank does the same thing. Usually when I take a shower, the boiler has not fired for the hot water for a while, & the DHW temp is close to the "make" point of the burner.

So say you have your hot water set @ 110 -- if you have a 10 degree differential, the burner won' t kick on until the water falls to 100*, which is barely warm for alot of people. Then it fires, & that heat immediately rises to the DHW output of the unit & goes directly to your shower.

I can always tell when the circulator kicks on -- it always happens about 3 minutes before I'm done -- the water suddenly gets real hot & I have to mix more cold water. Then I hear the deep rumble of the burner kicking on a minute later.
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler


Re: Bock Hot Water Heater Flue Temps

PostBy: traderfjp On: Sat Sep 06, 2008 11:41 pm

I didn't know that there was a 10 degree differential but that makes sense. Now the water seems very hot since I put the temp up to 120.
traderfjp
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing 3

Re: Bock Hot Water Heater Flue Temps

PostBy: SMITTY On: Sat Sep 06, 2008 11:59 pm

I was just guessing at the differential --they can be adjustable from 5* all the way to 25* on some units -- most are 10* to 20*

I had mine set @ 5* for the last year -- seemed to fire the boiler too often. I might raise the temp & set the diff to 10* to see how that works. Mine is adjustable from 5* to 20*, plus if it's set over 5* you can then set a "pre-heat" setting that kicks on the circulator for a set time before firing the burner, and the "post-heat" that will leave the circulator running for your set time to pull excess heat out of the boiler after burner shut-down. I haven't played with the settings in a while & decided to experiment a bit with them, since I've been in the basement for the last 2 days straight! :lol:
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler