Superior Fireplaces DRT4000-C Series Installation And Operation Instructions Manual page 47

Innovative Hearth Products
DRT4000-C & DRT4200-C Series Direct-Vent Gas Fireplaces
Figure 34A - FRONT Air Shutter Setting
Burner
Tube
Air Shutter
The adjustment rod for the front air shutter is
located in the lower control compartment. See
Table 29 for the standard adjustment setting.
1. Adjust the air shutters per instructions in Figures 34A and 34B and Table 29.
2. Light the fireplace. Follow the lighting procedure on the lighting label in the control compartment or Pages 69-
72.
3. Allow the burner to operate for at least fifteen (15) minutes while observing the flame continuously to ensure that
the proper flame appearance is achieved (Figure 34C). If the following conditions are present, adjust accordingly.
•
•
4. When satisfied that the burner flame appearance is normal, reinstall the lower control compartment door, then
proceed to finish the installation.
Table 29 - Main Burner Shutter Opening—Factory Setting
Figure 34C - Burner Flame Appearance
Adjustment
Set-Screw
Adjustment
Rod Up
(Fully-Closed
Position)
Adjustment
Rod Down
(Fully-Open
Position)
If flame appears sooty, adjust the air shutter, incrementally, to a more open position until the proper flame
appearance is achieved.
If flame remains blue, adjust the air shutter, incrementally, to a more closed position until the proper flame
appearance is achieved.
Models
Front Air Shutter
All
Figure 34B - REAR Air Shutter Setting
Closed
Open
The adjustment lever for the rear air shutter is located in
the lower control compartment. See Tables 28 and 29 for
the proper adjustment setting.
Natural Gas
Rear Air Shutter
1/16" 1/8"
(1.6 mm) (3.2 mm)
901032-00B, 07/2020
Rear Air Shutter Adjustment Lever
Open
Closed
Propane
Front Air Shutter Rear Air Shutter
1/8"
(3.2 mm) (3.2 mm)
Installation
1/8"
47