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Vermont Castings DVR28 Direct Vent Gas Fireplace
Restrictor Plate Installation
The DVR28IN is shipped with a restrictor plate for ex-
tended pipe runs other than straight out installations. A
guide for usage is shown in Figure 10.
NOTE: Some installations may require some adjust-
ment by the installer for optimum flame appearance.
Optimum flame appearance would be a flame not
subject to tall dirty yellow flames or lifting of flames from
burner tube.
Installation
1. Remove front glass assembly. Refer to Window
Frame Removal section on Page 18.
2.
Remove three (3) screws securing flue diverter to top
of combustion case. Remove flue diverter. (Fig. 9)
CAUTION: Use care not to damage rear refractory.
3. Remove two (2) screws on sides of flue opening.
4. Install restrictor plate with two (2) screws removed
from back of unit. (Fig. 9)
5. Re-install flue diverter with three (3) screws removed
earlier.
6. Reinstall glass assembly. (Refer to Page 18)
Figure 10
Examples for Extended Run/Restrictor Plate Settings
1. 90° Elbow, vertical 8’ (2.4 m), 90° elbow, out 20’ (6 m)
2. 90° Elbow, vertical 11’ (3.4 m), 90° elbow, out 13’ (4 m)
3. 90° Elbow, vertical 20’ (6 m), 90° elbow, out 7’ (2 m)
4. 90°, 40’ (12 m) vertical
Flue restricted to:
1. 1¹⁄₈” (29 mm) opening in flue pipe outlet
2. 7/8” (22 mm) opening in flue pipe outlet
3. 3/4” (79 mm) opening in flue pipe outlet
4. 1³⁄₈” (35 mm) opening in flue pipe outlet
Fig. 9 Install restrictor plate for optimum flame appearance.
Flue Diverter
Remove
Three (3)
Screws
FP1789
Remove
Two (2)
Screws
Flue
Opening
FP1788
Restrictor
Plate
FP1790
Refer to Fig. 10
Pilot
Main
AF-4000
HI/LO DC
Motor Drive
Red
Black
White
Green
Orange
AF-4000B/P
Orange
Red
Brown
Black
HI/LO DC Battery Pack
Module
Black
Gnd
Brown
Brown
Black
Red
(SWI)
(SWI)
Optional DC
Battery Back-up
FP1750
DVR28 wiring diagram
2/07
Red
Black
Fig. 8 DVR28 wiring diagram.
FP1750
FP1796
Wireless remote
3/07
ON
OFF
HI
LO
Wireless Remote
No wiring required.
(Refer to Pages 6,19, 23)