Vermont Casting RADVTCCH Manuel D’Utilisation

8

8

A vertical vent system must terminate no less than 8’ 
(2.44 m) and no more than 40’ (12 m) above the ap-
pliance flue collar. A restrictor plate (supplied) must be 
used, where specified, in all vertically terminated vent 
systems. (Refer to Figure 8) NOTE: The restrictor 
plate supplied with the vertical termination should 
be discarded. Adjust the restrictor plate according 
to recommendations in Figure 10. A vertically termi-
nated vent system must also conform to the following 
criteria:

•

  No more than three 90° elbows may be used.

•

  Two 45° elbows may be substituted for one 90˚ 

elbow. No more than six 45° elbows may be used.

•

  Vent must rise a minimum of 2 feet (305  mm) before 

offset is used.

•

  Termination height must conform to roof clearance 

as specified in Figure 11.

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(Measure from the appliance flue collar to the top of the vent 

pipe.)

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ST132a

FDV28

Vertical 

vent run

12/3/99 djt

area

modified

1/11/00 djt

ST132a

Fig. 8  Vertical vent termination window.

All Vertical Termi-
nations in this area 
Require use of the 
Restrictor Plate*

Vertical terminations 

must be within this area

No offset may be used 

within this area

Unacceptable 

Venting Configuration

No Restrictor Plate

The Radiance stove is shipped with a restrictor plate 
in the Parts Bag. Adjustments can be made by loosen-
ing the adjustment screw to allow the restrictor plate to 
slide up or down. (Fig. 9) 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 is a flame that is not sub-
ject to tall, dirty yellow flames producing soot or flames 
lifting off of the ember bed ports.
Restrictor Plate Adjustment
1.  Remove the screw in the back wall of the firebox.
2.  Install restrictor plate as shown in Figure 9 with cut 

out on left side. Secure with adjustment screw.

2.  Measure from center of screw to top edge of diverter 

(Fig. 9) to adjust plate according to guidelines in 
Figure 10. 

3.  Tighten attachment screw.
4.  Install logs following log installation instructions.

ST917

restrictor plate

6/07

Adjustment Screw

ST917

Fig. 9  Loosen screw to adjust restrictor plate.

Figure 10  

Examples for Extended Run/Restrictor Plate Settings
1.  Vertical 20’ (6 m), 90° elbow, out 8’ (2.4 m)
2.  Vertical 11’ (3.4 m), 90° elbow, out 2’ (610 mm)
3.  Vertical 40’ (12 m)
4.  Vertical 5’ (1.5 m), 90° elbow, out 5’ (1.5 m) 
Restrictor plate measurement from top of plate to center of 
screw:
1.  2³⁄₄” (70 mm) from center of screw to top edge of plate
2.  Plate down to top of slot
3.  Plate down to top of slot
4.  2³⁄₈” (60 mm) from center of screw to top edge of plate