aquastate wireing questions on 520

aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 6:52 pm

i have my boiler set up with a taco 120 circulator on primary loop and (five) taco # 7 circulators running for secondary loop floor heat 10000sq foot building pex in floor ,will the aquastate
on the boiler handle all six circulators when thermstate calls for heat or should i add additional relay
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992

Re: aquastate wireing questions on 520

PostBy: Rob R. On: Sun Jan 08, 2012 7:53 pm

Do you have the zone circulators hooked up to a relay control box?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 8:37 pm

no i came out of aquastate to 4x4 box and bugged primay and secondary cir in
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992

Re: aquastate wireing questions on 520

PostBy: Rob R. On: Sun Jan 08, 2012 8:40 pm

What model is the aquastat and all the circulators? You need to add up the amp draw of all the circulators.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 8:47 pm

the aquastate is the 8145A (i think thats the number) primary is taco 120 2.3 amps, secondary has (5) taco #7 ( again i think thats the number the small taco circulators ) they draw .71 amps each
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992

Re: aquastate wireing questions on 520

PostBy: stoker-man On: Sun Jan 08, 2012 9:21 pm

Normally R845As would be used for each circulator or there are panels that will handle 4 circulators.
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: aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 9:25 pm

evan if i want all to run at once one zone with primary loop ?
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992

Re: aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 9:42 pm

i just walked outto shop and looked its a L8124 a aqustat, taco 120 primary cir, and taco 007 cir, 5 of them
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992

Re: aquastate wireing questions on 520

PostBy: Scottscoaled On: Sun Jan 08, 2012 9:46 pm

I would put a 10 amp relay in and run the secondary pumps with it. You are close enough to the rating that it would be better safe than sorry. Besides, a relay is only $10, small money to pay compared to a L8124A. ;)
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: aquastate wireing questions on 520

PostBy: Rob R. On: Sun Jan 08, 2012 9:48 pm

The manual says the circulator circuit in the L8124a can handle 7.4 amps. You might overheat that relay on a long heat call...probably a good idea to put the 007's on their own relay.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: aquastate wireing questions on 520

PostBy: robbs64 On: Sun Jan 08, 2012 10:01 pm

thanks ill do that
robbs64
 
Stove/Furnace Make: efm
Stove/Furnace Model: 520df / 1992