PEARL 3600 Owner's Manual
21
RSF Woodburning Fireplaces
OPERATION
AIR CONTROLS
The PEARL3600 has two separate air controls. The Combustion
Air Control regulates the rate of burn, and the Outside Air control
determines where combustion air is drawn from (outside or inside
the home).
Combustion Air Control
Unlike most open fireplaces, RSF fireplaces don’t have flue
dampers. Instead, the system is sealed by closing the door, and
the amount of air entering the firebox is controlled by the
combustion air control lever (see Figure 19). Setting the air control
lever all the way open (towards the right) will allow the maximum
amount of air into the firebox. Closing the air control (towards the
left) will reduce the amount of air entering the firebox.
Controlling your fire
To get maximum efficiency out of your fireplace you will want to adjust the amount of air entering the firebox at the
appropriate times. Gauge how much to close the combustion air by how the fire reacts once the combustion air
control lever has been moved. If the fire goes out and begins to smolder, there’s too little combustion air entering
the firebox. If this happens, reopen the combustion air control and wait a little longer before attempting to restrict
the air again. If there’s no change to the burn pattern, you can continue to close the combustion air further. Always
close the combustion air control gradually, never from maximum to minimum in an instant. Eventually you should
be able to close the combustion air all or most of the way. There should always be visible fire inside the firebox at
every step of the process. It is normal for some installations that the air control cannot be fully closed and maintain
a fire. Every home, installation, and draft is unique. Ensure there is visible flame to keep the glass and chimney
clean.
If adjusting your air control has no affect on the rate of burn, there is air leaking into the firebox. It is likely occuring
at the door, and the rope gasket may need to be replaced. If this happens cease use of the fireplace until the air
leak has been found and resolved. You can order a new door gasket from your retailer with the part code FO-GRK9.
Outside Air Control
The PEARL3600 is designed to use outside air for combustion. A shutter located behind the bottom louver will open
or close the flow of air from outside into the fireplace.
If the fireplace is connected to outside air, the Outside Air Control should be set in the Open position when it is in
use.
Figure 19 Combustion Air Control
Figure 20 Outside Air Control Location
CLOSED
OPEN
