DS Stoves Stoker Owner's Manual
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DS Stoves Stoker Owner's Manual

High efficiency auger fed rice coal furnace
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DS Stoker Furnace
High Efficiency Auger Fed Rice Coal Stoker Furnace
OWNER'S MANUAL
This Furnace meets
U.S. Test Standard UL 391
CAN/CSA-B366.1
MADE IN USA
By
D.S. MACHINE SHOP
Model SF250
Before you install or operate a DS Stoker
Furnace, you must:
- Read all instructions carefully
- Install smoke and carbon monoxide
detectors.
Do Not
Discard
This
Manual

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Summary of Contents for DS Stoves Stoker

  • Page 1 Do Not Discard This Manual DS Stoker Furnace High Efficiency Auger Fed Rice Coal Stoker Furnace Model SF250 OWNER’S MANUAL This Furnace meets U.S. Test Standard UL 391 CAN/CSA-B366.1 Before you install or operate a DS Stoker Furnace, you must:...

  • Page 2: Safety Instructions

    20. Keep all covers and shields in place while stoker is in operation. 21. Turn off and disconnect power before disassembling pot, performing any maintenance or repairs.

  • Page 3: Chimney Requirements

    horizontal) and not more than two bends. No reduction in flue pipe below the exhaust diameter should be used. The pipe connecting the furnace to the chimney should be at least 24 gauge. Thicker gauges are available and will resist corrosion longer and need fewer replacements.

  • Page 4: Installation Instructions

    Install part #SF250-AMM to outside of part #SF250-CSMP using 2-5/16×3/4 (D) SS hex bolts and 2-5/16” (I) SS nut. See Fig. 3. 10. Insert standard auger pipe (part #SF250-1AP) into stoker pot inlet and tighten 2-5/16 x ¾ (D) SS bolts. See Fig. 3.
  • Page 5 8-5/16 x ¾ (D) SS Hex bolts and 8-5/16” (I) SS nuts. Insert short auger pipe through inside of stoker furnace and out the 2-7/16” hole of part #SF250-ASMP. See Fig. 3. Reassemble Pot Ring #SF250-PTOP to pot assembly. See Fig. 3 Note.
  • Page 6 FURNACE MUST BE WIRED BY A QUALIFIED LICENSED ELECTRICIAN OR D.S. IS NOT RESPONSIBLE FOR WARRANTY Installation Instructions Limit Switch and Pot Snap Disc Wiring diagram with all wires included Wiring Diagram Blue is Limit Switch High Limit Yellow is Side distribution blower side...
  • Page 7 FURNACE MUST BE WIRED BY A QUALIFIED LICENSED ELECTRICIAN OR D.S. IS NOT RESPONSIBLE FOR WARRANTY 120 Volt Wiring Diagram 24 Volt Wiring Diagram...

  • Page 8: Typical Installation

    MONOXIDE DETECTOR BEFORE INSTALLING THIS UNIT Typical Installation Below is a typical way to install a stoker add-on furnace. In case of power outage you should always run the hot air plenum up so that it can circulate by gravity. The supply duct must be constructed of material with a minimum 250 temperature rating.
  • Page 9 Optional Domestic Coil Hook Up...
  • Page 10 2. Push 60 minute timer start button. See page 7, Fig. 7 for start button location. 3. Turn on auger. Set auger speed to high setting and fill stoker pot to top ring. Turn off auger. 4. Bury stoker starter package in center of pot with just the fuse exposed. Or wrap shavings or saw dust in news paper and partially bury in coal.
  • Page 11 This is just a suggested starting point. You will need to adjust to your setup. Chimney draft and coal quality play a role in the required run time of your stoker. If your run time is too high your distribution blower may turn on and distribute heat when thermostat does not have a call for heat.
  • Page 12 Coal 1. Use rice sized coal in your stoker furnace. With not more than 10% oversize and not more than 15% under size. Not following these guide lines will result in poor combustion. 2. Avoid using wet coal, this will retard combustion and increase carbon monoxide output.
  • Page 13 2 - If you purchased the optional 500 lb All joints coal hopper that is available with this must be 2-5/16 x 1 SS stoker boiler it gets attached to the end sealed Carriage Bolts with of the short auger coming out of boiler. with 641...

  • Page 14: Parts List

    Parts List DS Stoker Furnace Sheet Metal Cover box SF250-MCP Ash door SF250-AD Top Sheet Metal SF250-TSM Auger side mount SF250-ASMP Left Sheet Metal SF250-LSSM Control side mount SF250-CSMP Right Sheet Metal SF250-RSSM Ash pan SF250-ASHP Back Sheet Metal SF250-BSM...

  • Page 15: Troubleshooting

    - Timer “ON” operation too short. Chose timer setting with longer on time and shorter off time. - Excessive draft - Too little draft - Too much combustion air - Not feeding coal - Stoker will not run - Exhaust fan in building - Control failure - Too little coal feed Problem 5 - Carbon Monoxide...

  • Page 16: Limited Warranty

    L I M I T E D W A R R A N T Y DS Stoker Furnace D.S. Stoves warrants this DS Stoker Furnace against premature failure of any component Please read this warranty carefully! due to workmanship quality or materials. So long as it is owned by the original purchaser, subject to terms, limitations and conditions herein set out.

This manual is also suitable for:

Sf250

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