Dual heat Thermostats

Dual heat Thermostats

PostBy: RS7 On: Wed Nov 07, 2012 5:06 pm

I am looking to purchase a dual heal thermostat to run a Alaska coal stocker and an oil furnace. I am using the coal stove as my primary heat and would like to have the oil furnace on the same thermostat in case I am away from my house and I run out of coal in the hopper and the fire goes out and then the oil furnace would come on. Currently I only have a tstat for the oil furnace and it is like a $60 Honeywell one from home depot. Anyone have any suggestions to what tstat I should get to hook both up? Thanks.
RS7
 
Hot Air Coal Stoker Furnace: Alaska model 140
Coal Size/Type: Rice
Other Heating: Oil backup

Re: Dual heat Thermostats

PostBy: Sting On: Wed Nov 07, 2012 5:15 pm

"Dual" t stats as you wish for are [expensive] Dual headaches

simply set the tstat of the OB to say 55 or 60 and the coal appliance at your normal dwelling temp 65-70 or higher if you wish -- your hauling the coal

should you loose fire on the solid fuel heater thing -- the temp will drop in the house and the back up OB will gracefully and safely pick up the load until you address the drama.

think about it -- what if the fault is the dual tstat???? :shock: With a redundant system and separation - your chances of failure are cut significantly

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

Re: Dual heat Thermostats

PostBy: Rob R. On: Wed Nov 07, 2012 5:35 pm

I agree with Sting, just get a separate thermostat for the coal unit and enjoy.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Visit Lehigh Anthracite

Re: Dual heat Thermostats

PostBy: AA130FIREMAN On: Wed Nov 07, 2012 10:28 pm

I use 2 of the same brand thermostats, a couple inches apart. Set one lower as backup. Funny with mine, they read 1.5 degrees room temp different :?
AA130FIREMAN
 
Stove/Furnace Make: axeman anderson
Stove/Furnace Model: 130 anthratube

Re: Dual heat Thermostats

PostBy: oilman On: Wed Nov 07, 2012 10:33 pm

For situations like this I use a Heat Pump Thermostat. (2 stage heat)
oilman
 

Re: Dual heat Thermostats

PostBy: RS7 On: Wed Nov 07, 2012 11:13 pm

I thought about having two different tstats but I didn't want to have them next to one another. It was more of an appeal thing since My current tstat is in the living room.
RS7
 
Hot Air Coal Stoker Furnace: Alaska model 140
Coal Size/Type: Rice
Other Heating: Oil backup

Re: Dual heat Thermostats

PostBy: RS7 On: Wed Nov 07, 2012 11:14 pm

Oilman, would you recommend a tstat brand and model.
RS7
 
Hot Air Coal Stoker Furnace: Alaska model 140
Coal Size/Type: Rice
Other Heating: Oil backup

Re: Dual heat Thermostats

PostBy: Sting On: Thu Nov 08, 2012 12:07 am

you want a headache
Have you lifted the old Stat and confirmed that you have the necessary extra wires -- Or will you have to fish a new cable anyway

Here

http://www.grainger.com/product/HONEYWE ... Pid=search
Sting
 
Other Heating: BurnHAM=NG-gas

Re: Dual heat Thermostats

PostBy: RS7 On: Thu Nov 08, 2012 8:06 am

Sting, I will have to fish a new wire.
RS7
 
Hot Air Coal Stoker Furnace: Alaska model 140
Coal Size/Type: Rice
Other Heating: Oil backup

Re: Dual heat Thermostats

PostBy: McGiever On: Thu Nov 08, 2012 8:24 pm

RS7 wrote:Would you recommend a tstat brand and model.



http://www.klenger.net/RV_General/HVAC_Honeywell_TH5220D_T-Stat/index.html
This link is broken, either the page no longer exists or there is some other issue like a typo.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Visit Lehigh Anthracite