Vertical Termination; Restrictor Plate Adjustment For Extended Pipe Runs - Vermont Castings Radiance RADVTSCCB Installation And Operating Instructions Manual

Radiance Direct Vent Gas Heater
®

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 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 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
specified in Figure 11.
40
39
38
All Vertical Ter-
37
36
minations in this
35
area Require use
34
of the Restrictor
33
32
Plate*
31
30
29
28
27
Vertical terminations
26
must be within this
25
area
24
23
22
21
20
19
18
16
15
14
13
12
11
10
9
8
7
6
5
4
**
3
2
1
0
1 2 3 4 5 6 7
**No Restrictor
Horizontal Run (in feet)
Plate
Fig. 8 Vertical vent termination window.
20306759
Unacceptable
Venting Configuration
8 9 10 11 12 13 14 15 16 17 18 19
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. (Figure 9) A guide for usage is shown in Figure 10.
NOTE: Some installations may require some adjustment
by the installer for optimum flame appearance. Optimum
flame appearance is a flame that is not subject to tall, dirty
yellow flames producing soot or flames lifting off of the
ember bed ports.
Restrictor Plate Adjustment
• Remove the screw in the back wall of the firebox.
• Install restrictor plate as shown in Figure 9 with cut out
on left side. Secure with adjustment screw.
• Measure from center of screw to top edge of diverter
(Figure 9) to adjust plate according to guidelines in
Figure 10.
• Tighten attachment screw.
• Install logs following log installation instructions.
Adjustment Screw
ST132a
FDV28
Vertical
vent run
12/3/99 djt
Fig. 9 Loosen screw to adjust restrictor plate.
Examples for Extended Run/Restrictor Plate Settings
Vertical 20'
(6 m), 90°
elbow, out 8'
(2.4 m)
Restrictor plate measurement from top of plate to
center of screw:
2 ⁄ " (70 mm)
3
4
20
from center
ST132a
of screw to
top edge of
plate
Figure 10
PRE-INSTALLATION
Vertical 11' Vertical 40'
ST917
(3.4 m), 90° (12 m)
elbow, out 2'
restrictor plate
(610 mm)
6/07
Plate down Plate down
to top of slot to top of slot
ST917
Vertical 5'
(1.5 m), 90°
elbow, out 5'
(1.5 m)
2 ⁄ " (60 mm)
3
8
from center
of screw to
top edge of
plate
9