Page 2
April 19, 2010
4100-I ACT Wood Insert
250-7201F
R
Start-Up Air Control
Primary Air Control
Figure 23.1
OPEN - PUSH IN
CLOSE - PULL OUT
Start-up Air System
The combustion air enters at the rear of the firebox through
the rear air tubes. This air supply is controlled by the Start-
up Air Control.
Primary Air System
The primary air enters at the upper front of the firebox, near
the top of the glass door. This preheated air supplies the
necessary fresh oxygen to mix with the unburned gases,
helping to create second, third and fourth combustions.
This air is regulated by the Primary Air Control. For more
primary air push control “IN”, for less air pull control “OUT”.
Air Controls
Fire Risk
• Do NOT operate with Start-Up Air Control in
open position in excess of 15 minutes.
• Risk of extreme temperatures!
WARNING
Prolonged operation with Start-Up Air Control in open
position may cause combustible materials around
appliance to exceed safe temperature limits.
