aquastat, timer and tridcator

aquastat, timer and tridcator

PostBy: mooseman100 On: Sat Apr 22, 2017 10:25 am

I am getting ready to add a new aquastat, timer and tridicator to my efm 520.
Any favotires out there?
mooseman100
 
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520


Re: aquastat, timer and tridcator

PostBy: Rob R. On: Sat Apr 22, 2017 12:26 pm

That depends. Do you have a control wire run from the house to your outbuilding to signal a heat call to the aquastat?

I like Intermatic C8865 timers.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: aquastat, timer and tridcator

PostBy: mooseman100 On: Sat Apr 22, 2017 1:09 pm

No control wire from house to timer. Thermostat in house calls for heat and opens valves for boiler water to circulate heat thru exchangers in duct work. Boiler is 110' from huose in separate building, all controls for it are there
mooseman100
 
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520

Re: aquastat, timer and tridcator

PostBy: Scottscoaled On: Sat Apr 22, 2017 6:26 pm

Intermatic C8865 timer with a Hydrastat 3250 Triple a-stat. Marsh tridicator.
Scottscoaled
 
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

Re: aquastat, timer and tridcator

PostBy: Rob R. On: Sun Apr 23, 2017 6:57 am

I am a fan of the Hydrostat units, but since your boiler just maintains a set temperature without any link to the controls in the house, nearly any aquastat would work just fine.

A Honeywell L8124 or L7224u would work well, or you could even use a pair (one to control the temperature, one for a high limit control) of L4006A aquastats.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy