Quadra-Fire 7100FP-BK-B warranty Kindling or 1st stage, 2nd stage, Final stage, Slide Air Control

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7100FP EPA Woodburning Fireplace

J. Burning Process K. Automatic Combustion Control (ACC)

Fire requires 3 things to burn: fuel, air and heat. If heat is robbed from the fireplace during the drying stage, the new load of wood has reduced the chances for a good clean burn. For this reason, it is always best to burn dry, seasoned firewood. We do not advise burning unsea- soned wood, however if it happens, you must open the Slide Air Control and burn the fireplace at a high burn setting for a longer time to start it burning.

Kindling or 1st stage:

It helps to know a little about the actual process of burning in order to understand what goes on inside a fireplace. The first stage of burning is called the kindling stage. In this stage, the wood is heated to a temperature high enough to evaporate the moisture which is present in all wood. The wood will reach the boiling point of water (212°F) and will not get any hotter until the water is evaporated. This process takes heat from the coals and tends to cool the fireplace.

2nd stage:

The next stage of burning, the secondary stage, is the period when the wood gives off flammable gases which burn above the fuel with bright flames. During this stage of burning it is very important that the flames be main- tained and not allowed to go out. This will ensure the cleanest possible fire. If you are adjusting your fireplace for a low burn rate, you should close down the air to the point where you can still maintain some flame. If the flames tend to go out, the fireplace is set too low for your burning conditions.

Final stage:

The final stage of burning is the charcoal stage. This occurs when the flammable gases have been mostly burned and only charcoal remains. This is a naturally clean portion of the burn. The coals burn with hot blue flames.

It is very important to reload your fireplace while enough lively hot coals remain in order to provide the amount of heat needed to dry and rekindle the next load of wood. It is best to open the air control for a short while before reloading. This livens up the coalbed. Open door slowly so that ash or smoke does not exit fireplace through opening. You should also break up any large chunks and distribute the coals so that the new wood is laid evenly on hot coals.

CAUTION

Fireplace operation does require air. Do not take air from other fuel burning appliances which can result in improper venting (smoking) or air dilution. Always provide adequate makeup air.

Typically, when you build a fire, you need to open the controls to give the fire more air so the wood will start burning. You would then have to physically watch the fire and shut down the air controls so the fireplace does not overfire and burn up your wood too quickly. With the Automatic Combustion Control (ACC) system, you do not have to physically watch the fire. Once you set the ACC system it will monitor the fire for you.

Set the ACC slide control to HIGH by moving it all the way to the right. As you move the control rod to the right, about 3/4 of the way you will feel some resistance. You must move past that resistance approximately 3/4 in. (19 mm) to reach the HIGH setting. Start your fire and then move the slide control to the left to the desired burn rate. (See page 50 for the position of the slide control for the different burn rates.) The fireplace will automatically go to that level after the fire is fully established. This allows for less manual monitoring of the fire and more efficient use of fuel while maintaining the desired heat output.

NOTE: Close controls when not burning.

Left - Close Right - Open
	Meet	High
Low		Setting
	Resistance
Setting	Move past
	3/4" to High
Figure 49.1 Operating the ACC Controls

*Slide Air Control

Slide LEFT to Stop

Stop to 1/8 in. -1/2 in. open

Stop to 1/2 in. - 1-1/2 in. open

All the way to RIGHT

THE DECORATIVE FASCIA MUST BE REMOVABLE ON YOUR FIREPLACE IN ORDER TO SERVICE THE AUTOMATIC COMBUSTION CONTROL SYSTEM.

September 7, 2007 433-1390D Page 49