What add-on furnace accessories are available? How is the door gasket adhered? How do I replace the door gasket? How should I set the feed door draft? How do I maintain the blower fan and motor? What end of year maintenance is needed? What type of wood should I use? How do I burn coal in my add-on furnace?

What add-on furnace accessories are available?

DK-50 Draft Induction Kit

The DK-50 can help with making small temperature adjustments in the living room instead of directly on the front thermostat panel on the furnace. The Draft Induction Kit includes a thermostat which can be mounted anywhere in the home and is connected to a separate draft induction blower (which is in addition to the blower(s) on the back of the stove) that turns on and sends oxygen to the firebox making the fire burn hotter and increasing the temperature of the air in and around the firebox. The increase in the temperature in the air around the firebox will turn on the blowers. Compare to a gas furnace: When the thermostat is turned up, the burners turn on and then at a certain temperature the blowers turn on.

AD-8 Anti-Back Draft Damper

This accessory is only for use if the Norseman furnace is used in conjunction with another furnace. When the other furnace is on and the Norseman is off, air should not go backwards into the Norseman and waste hot air. The AD-8 Anti-Back Draft Damper keeps the air out by closing off the pipes connected to the duct work unless the blowers are on.

CR-15/25 Cold Air Return

The Cold Air Return boxes provide a hook up for cold air return. This recycles air from the living areas instead of pulling air from the furnace room (which may be colder and/or musty) and runs it through a filter. Cast Iron Stoves

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How is the door gasket adhered?

The gasket is attached to your stove with a high temperature stove and gasket cement. Should the gasket fail, replacement gasket and adhesive is readily available at your local hardware store.

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How do I replace the door gasket?

  1. Ensure appliance is not in operation and is thoroughly cooled.
  2. Remove old door gasket and clean channel.
  3. Using an approved, high temperature gasket cement, apply a thin coat in bottom of channel.
  4. Starting at hinge side of door, work 3/8-inch diameter fiberglass gasket material into channel around door unit, end butt and trim to length to ensure no gaps.
  5. Close door and allow three to four hours for cement to set before firing appliance.
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How should I set the feed door draft?

It depends on the situation: how strong the draft is, wood or coal, what kind of wood, etc. It is different for everyone so it is best to tinker with it to figure out what works best.

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How do I maintain the blower fan and motor?

Oil blower motor(s) twice a year. Add five drops of light weight (SAE 20) oil to each oiler tube. If the blower and fan accumulate moderate to heavy dust, vacuum, wipe and/or blow dust from motor housing and fan.

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What end of year maintenance is needed?

Remove all accumulated ash from inside fire box and ash drawer compartment. Ash will absorb moisture and can cause corrosion.

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What type of wood should I use?

To get the best burn you will want to have wood that meets the following criteria:

  • Seasoned and split hardwood, wood that has been dried for one year in a well-ventilated and sheltered area. Hardwood comes from slow growth trees like Oak and Fir.
  • Avoid green unseasoned wood which will only burn at 60% of the fuel value of dry seasoned wood and will deposit creosote on the inside of the stove and chimney.
  • No sap!
  • Use only DRY wood! (wet or damp wood leads to creosote - creosote also comes from incomplete combustion when a stove is burned too low).
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How do I burn coal in my add-on furnace?

  1. The size of coal fuel is critical - too large and it won't burn well, too small and it will smother the fire creating excessive smoke and gases.
  2. Purchase Bituminous coal "nuggets" that are 1-3/4" to 4" diameter (also called "nut" or "egg" sized) and that have been "cleaned" to remove rocks and other minerals. Bituminous coal is recommended for ease of use but produces a greater amount of volatile gases so it is important to build and refresh coal fires properly.
  3. Extra maintenance will also be required to remove accumulated soot on heating surfaces and pipes.
  4. All fires should be initially started using wood kindling.
  5. Hardwood is best as it creates a hotter bed of coals that is necessary to ignite the coal. Once a hot bed of wood coals has been established, an initial layer of coal may be placed in the firebox.
  6. Due to the high amount of volatile gas produced by coal, the initial flames will be long and of an orange or yellow color accompanied by quite a bit of smoke. As the gas is burned off the flames will become shorter, the color will change and less smoke will be produced.
  7. Once the fire is well established, add coal to the center of the firebox in a conical arrangement.
  8. The highest part of the fuel should be in the center of the fire box. This allows the heat to drive off the volatile gases and the turbulence created causes a more efficient burn.

Remember to allow enough secondary air to enter the fire box and keep the stove pipe damper open to properly burn off the volatile gases. You will have to experiment with your particular setup (fire construction, fuel load, spin draft control, damper and automatic settings) as no two arrangements of furnace/chimney are the same. When refueling a coal fire, use a poker to break up any crust that may have formed being careful not to mix the coal which may increase the chance of forming "clinkers."

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Banking a Coal Fire

A fire should be banked for extended operation without tending, such as overnight. This is accomplished by heaping the fuel along the sides and back of the fire box so that the fire gradually burns through the fuel. This reduces the intensity of the fire without letting it go out.

  1. Use the same procedures as in refueling but without shaking the grates. The layer of ash will help to reduce the intensity of the fire.
  2. After loading the fuel in this manner, let the fire establish itself for about 30 minutes then close the damper and adjust the automatic control to a point so that the house does not get too cold.
  3. Make sure you leave yourself enough time to bank the fire before leaving or retiring so you can make the necessary adjustments after the fire has become well established.
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Reviving a Coal Fire

  1. To revive a fire that has almost gone out, increase the draft through the grates by opening the ash door and stove pipe damper and closing the door spin draft control(s).
  2. Place a thin layer of new coal over the entire fire but DO NOT SHAKE the fire grates. Doing so may cause the live coals to drop through the grates.
  3. Once the fresh layer of coal has ignited you may shake the grates (slightly) and refuel as usual.

CAUTION: Do not smother a fire when adding coal. Gases driven off from fresh coal must be burned or they may accumulate and explode. Whenever refueling, open the pipe damper and turn the thermostat damper to high before opening the door to allow any accumulated gases to be burned off.

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