Honeywell Timer--Need to Adjust

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
Post Reply
Anthracitemight
Member
Posts: 24
Joined: Fri. Mar. 02, 2012 11:46 pm
Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: Tremont PA

Post Wed. Apr. 18, 2012 10:16 pm

Hi guys. I have the honeywell timer attached to this post running on a EFM 520. I would like to know how to set this to go off once an hour. It currently goes off more than once an hour and I want to be as efficient as possible. Any help would be appreciated
Attachments
honeywell-stoker-timer.jpg

jimg
Member
Posts: 56
Joined: Thu. Jun. 12, 2008 10:35 am
Stoker Coal Boiler: EFM 520 Highboy
Hand Fed Coal Stove: Warm Morning in garage, Columbia Kitchen Range in pieces
Coal Size/Type: Rice for EFM and Stove/Nut for
Location: Central PA

Post Thu. Apr. 19, 2012 4:19 pm

That looks like an S400 timer. You should be able to flip the piece labeled cam segment on your diagram so that the timer only activates each hour. Turned the way shown on the diagram with two low points it activates every 1/2 hour. Just remove the part labeled cam screw and flip the cam segment and that should do the trick.

Anthracitemight
Member
Posts: 24
Joined: Fri. Mar. 02, 2012 11:46 pm
Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: Tremont PA

Post Fri. Apr. 20, 2012 1:18 am

Thanks for the response. When you say flip, do you mean rotate the piece, or mirror the piece? (aka line the arcs up?)

Thanks

Visit Alternate Heating Sytems

User avatar
madmack
Member
Posts: 21
Joined: Fri. Aug. 19, 2011 5:53 pm
Stoker Coal Boiler: van wert
Coal Size/Type: buck
Location: porter corners ny

Post Fri. Apr. 20, 2012 8:06 am

Turn cam segment so curve edge is oppisite of the way it is in your picture.

jimg
Member
Posts: 56
Joined: Thu. Jun. 12, 2008 10:35 am
Stoker Coal Boiler: EFM 520 Highboy
Hand Fed Coal Stove: Warm Morning in garage, Columbia Kitchen Range in pieces
Coal Size/Type: Rice for EFM and Stove/Nut for
Location: Central PA

Post Fri. Apr. 20, 2012 8:33 am

Right you want the curved part of the cam segment to point outward so that part of the timing cam is not detented. As the timing cam moves around and the detented portion is on top this allows the mercury switch to drop completing the circuit which turns the stoker unit on. Right now that happens every 30 mins. When you make the switch it will only happen once per hour.

User avatar
McGiever
Member
Posts: 5997
Joined: Sun. May. 02, 2010 11:26 pm
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek
Location: Junction of PA-OH-WV

Post Sun. Apr. 22, 2012 11:22 pm

The "ON" time can be tweaked by loosing the "Timing Lock Screw" and increasing or reducing the "ON" time for either the half hour or 1 hour cycle.
SLOW AND STEADY WINS THE RACE

Post Reply

Return to “Stoker Coal Boilers Using Anthracite (Hydronic and Steam)”