Operating instructions

9
Radiance
®
Direct Vent Gas Heater
20306759
Vertical Termination
A vertical vent system must terminate no less than 8’ (2.44
m) and no more than 40’ (12 m) above the appliance ue
collar. A restrictor plate (supplied) must be used, where
specied, 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 terminated 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
specied in Figure 11.
20
19
18
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Vertical Run (in feet)
(Measure from the appliance flue collar to the top of the vent pipe.)
Horizontal Run (in feet)
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
ST132a
FDV28
Vertical
vent run
12/3/99 djt
ST132a
Fig. 8 Vertical vent termination window.
Restrictor Plate Adjustment
for Extended Pipe Runs
The Radiance stove is shipped with a restrictor plate in
the Parts Bag. Adjustments can be made by loosening 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 adjustment
by the installer for optimum ame appearance. Optimum
ame appearance is a ame that is not subject to tall, dirty
yellow ames producing soot or ames lifting off of the
ember bed ports.
Restrictor Plate Adjustment
1. Remove the screw in the back wall of the rebox.
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 Fig-
ure 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. 2
3
⁄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. 2
3
⁄8" (60 mm) from center of screw to top edge of plate
**
Unacceptable
Venting Conguration
**No Restrictor
Plate
All Vertical Ter-
minations in this
area Require use
of the Restrictor
Plate*
Vertical terminations
must be within this
area