Monessen Hearth 624DV(ST - Manual (Page 34)

34 42D0200
Designer Series Gas Fireplaces aIR RESTRICToR adjuSTMENT
The fireplace is equipped with a restrictor plate that is located inside the top chamber of the
fireplace. Depending upon the vent configuration, you may be required to adjust the restrictor
position
1. Remove glass frame. Refer to Glass Frame Removal, Page 31.
2. Using a Phillips screw driver, loosen the screw that secures the air restrictor. Do not back
the screw all the way out.
3. Slide the baffle on top of the restrictor plate to block a percentage of the grille opening. Refer
to the chart below for recommended settings.
NoTE: All the settings above are based on the testing at the factory and provided as a
guide for startup. On certain applications, adding a restrictor disc will help to achieve flame
aesthetics.
FP2311
air restrictor
Air Restrictor
Screw
(Slide Left and Right)
Figure 48 -
Adjust Baffle on Air Restrictor
Plate
Flue Opening
Air Restrictor
FP2311
venting height (feet) % of Grille opening
8 to 20 100% (Factory Setting)
20 to 30 75%
30 to 40 50%