Greetings! I have an EFM 520 with three zones (zone 1 - 1st floor / zone 2 - 2nd floor / zone 3 - basement). My zone 1 thermostat is not triggering the stove to turn on. The other thermostats are working fine and the stove is running as it normally would.
The thermostat in zone 1 is a Sensi smart thermostat. I can hear it "click" on when I adjust it to make the furnance turn on. It just isn't making the stove cycle.
Some additional information. I do turn the system off during the summer. I recently just turned it back on. I have been doing this process for years and this is the 1st complication I have noticed.
Zone 1 thermostat not triggering heat
- 2001Sierra
- Member
- Posts: 2211
- Joined: Wed. May. 20, 2009 8:09 am
- Location: Wynantskill NY, 10 miles from Albany
- Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
- Coal Size/Type: Rice
- Other Heating: Buderus Oil Boiler 3115-34
Not sure why draining water from a zone should matter. Now if you have air in that zone that is a different story. Did you get air with the water? The air scoop might get the rest of the air out of that zone if this is the case. There also should be a air bleeder on your air scoop.
-
- Member
- Posts: 311
- Joined: Sat. Oct. 25, 2014 11:22 am
- Location: Halifax, Pa
- Stoker Coal Boiler: axeman anderson 130
- Coal Size/Type: Pea
Sounds like there is a possibility that it was air bound. Draining water from the system would help that. Hope that it stays running for you. What kind of zone control board are you running?
-
- New Member
- Posts: 4
- Joined: Sun. Nov. 07, 2021 8:12 pm
- Stoker Coal Boiler: EFM 520
- Coal Size/Type: Rice
I think it occurred when I had the system shut down for the summer months. Things are running great since draining some water. I believe that got the air out of the line.2001Sierra wrote: ↑Sun. Nov. 07, 2021 9:37 pmNot sure why draining water from a zone should matter. Now if you have air in that zone that is a different story. Did you get air with the water? The air scoop might get the rest of the air out of that zone if this is the case. There also should be a air bleeder on your air scoop.
- 2001Sierra
- Member
- Posts: 2211
- Joined: Wed. May. 20, 2009 8:09 am
- Location: Wynantskill NY, 10 miles from Albany
- Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
- Coal Size/Type: Rice
- Other Heating: Buderus Oil Boiler 3115-34
Zone board I am assuming is Taco Panel which the thermostats and circulators feed to to determine which zone needs heat.
- Richard S.
- Mayor
- Posts: 15183
- Joined: Fri. Oct. 01, 2004 8:35 pm
- Location: NEPA
- Stoker Coal Boiler: Van Wert VA1200
- Coal Size/Type: Buckwheat/Anthracite
You shouldn't really have air in the lines. If you hear a lot of gurgling as water is circulated you have a lot of air. There should be little or no gurgling. Minimally there should be automatic air bleeders in strategic locations e.g. high point of the system. For example you might have elbow before/after it enters baseboard and you will have one of these on top:
https://www.lowes.com/pd/Durst-Air-Eliminator/345 ... lsrc=aw.ds
The valve cap on the top should be slightly open. It will automatically purge the air as it's collected.
You might also have one these somewhere on the system with the air bleeder on top.
https://www.lowes.com/pd/Taco-Radiant-Heating-1-i ... 1000182435