circulator questons

Re: circulator questons

PostBy: coalkirk On: Thu Jan 23, 2014 10:09 pm

My boilers are at opposite ends of my basement due to chimney locations. The feed from the coal boiler goes into the return of the oil boiler. Also going into the oil boiler return are 3 zone returns. The oil boiler acts as a mixing vessel for the hot water from the coal boiler and the zone returns. The supply off of the oil boiler has the 3 zone feeds and a line back to the coal boiler. I have flow check valves on the return side of all 3 zones. Each zone also has a circulator. Works great. I can't put up any pics tonight but I'll try to do it Friday.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: circulator questons

PostBy: 1975gt750 On: Thu Jan 23, 2014 11:03 pm

pic would be great.
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Re: circulator questons

PostBy: Sting On: Fri Jan 24, 2014 8:03 am

you don't ASS-chew-ally need to change any physical piping
just use a few ice cube relays and wire the system so when/if the dump zone is active -- it also brings the boiler to boiler pump(s) on line
Sting
 
Other Heating: BurnHAM=NG-gas


Re: circulator questons

PostBy: 1975gt750 On: Fri Jan 24, 2014 8:37 am

i may have a bigger problem. after looking at the way the system was plumbed i may have to add some zone valves. the reason why is if zone 1 comes on and the circulator between the two boilers come on it may pull water through the other three zones when heat is not called for. do you think the taco 007 have enough to pull the water from the coal boiler to the oil burner and then through the house and back to the coal boiler with out using the circulator in between the two boilers?

a greatly appreciate all the help

chris
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Re: circulator questons

PostBy: Sting On: Fri Jan 24, 2014 8:51 am

now your going to have to post pictures - your descriptions are good - but its not the same and its far to difficult for a figment of the public internet to see this near boiler piping from here
Sting
 
Other Heating: BurnHAM=NG-gas

Re: circulator questons

PostBy: coalkirk On: Fri Jan 24, 2014 2:02 pm

OK here's some pics of my piping.
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This one shows the rerurn line to my oil boiler. The 1 1/4" copper is the supply from the coal boiler. The others are zone returns.
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The next one show an individual return line with a check valve in it. That keeps water from flowing out into a zone that is not calling for heat.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: circulator questons

PostBy: 1975gt750 On: Fri Jan 24, 2014 10:00 pm

here is a pic of the plumbing on the coal boiler. hot water comes in from the coal boiler on the bottom of the oil burner and hot water goes out the top to the zoned and the returns down the circulators and back to the coil boiler. if you look at the h valve set up if I was to leave the middle valve open would this let the water circulate better when the secondary red circulator comes on without pulling through the other zones. hope the pic helps

chris
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1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Re: circulator questons

PostBy: Sting On: Mon Jan 27, 2014 8:17 am

1975gt750 wrote:i may have a bigger problem. after looking at the way the system was plumbed i may have to add some zone valves. the reason why is if zone 1 comes on and the circulator between the two boilers come on it may pull water through the other three zones when heat is not called for. do you think the taco 007 have enough to pull the water from the coal boiler to the oil burner and then through the house and back to the coal boiler with out using the circulator in between the two boilers?

a greatly appreciate all the help

chris


Those pics solved my questions -- thank-you
no the way you have the coal boiler on the return -- is the typical close spaced tee method of boiler isolation -- PERFECT it will not "pull" as you describe above

as for the taco pump size -- Irrelevant due to coal boiler being isolated by the piping - if you want a "dump zone" you will have to due it with controls -- not further plumbing

Kind Regards
Sting
Sting
 
Other Heating: BurnHAM=NG-gas

Re: circulator questons

PostBy: 1975gt750 On: Mon Jan 27, 2014 11:02 am

well after some wiring issues and leak at one elbow my neighbor is up and running on coal no more oil. all we need to do is some fine tuning of the boiler and we should be al set. as for the valving of the system it looks like if I leave to T open it works fine if I close the T-valve the secondary circulaor will suck water through the other zones not calling for heat. other that that working good and maintaining boiler temp between 160-180. have the stoker set at nine turns out and aquastats set ant 160-180 dump zone set at 220 and 3 pins every 10 min. heating a 2800 square foot log cabin with regular radiators. thanks for all your help

chris
1975gt750
 
Stoker Coal Boiler: keystoker kaa-2
Coal Size/Type: rice coal / blaschak
Other Heating: pensotti oil boiler with riello 40 burner
Stove/Furnace Make: keystoker
Stove/Furnace Model: kaa-2

Re: circulator questons

PostBy: Sting On: Mon Jan 27, 2014 11:43 am

yes Chris -- the valves associated with the loop from and to the coal appliance MUST be open
Sting
 
Other Heating: BurnHAM=NG-gas

Re: circulator questons

PostBy: kstills On: Mon Jan 27, 2014 1:25 pm

Sting wrote:if it is -- then there is no boiler protection


Depends on the mass of the oil boiler?

Or by protection do you mean if the dump zone switch fails?
kstills
 
Stoker Coal Boiler: WL 110
Stove/Furnace Make: Leisure Line

Re: circulator questons

PostBy: SMITTY On: Mon Jan 27, 2014 2:04 pm

coalkirk wrote:
I run my circulator between the coal boiler and OB 24/7. I solved the heat loss problem by removing the OB vent and capping the vent outlet on it. I also physically disconnected a wire from the burner control so it can't possibly fire.

This is exactly how I hooked my boiler up. Only difference is it's not plumbed in series, but in parallel. Been working great so far this winter, and the install was ... RELATIVELY ... easy. :D


WOW you've got ALOT of circulators there! :o
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