Gas Specifications; Gas Inlet And Manifold Pressures; High Elevations; Horizontal Termination - Vermont Castings Radiance RADVTSCCB Installation And Operating Instructions Manual

PRE-INSTALLATION

GAS SPECIFICATIONS

Model Fuel
RADVT Nat.
RADVT LP
Signature
RADVTSC Nat.
Command
Signature
RADVTSC LP
Command

GAS INLET AND MANIFOLD PRESSURES

Inlet Minimum
Inlet Maximum
Manifold Pressure
The installation of your Vermont Castings stove must
conform with local codes, or in the absence of local
codes, with the National Fuel Gas Code ANSI Z223.1/
NFPA 54 - latest edition, or CSA B149.1 Installation
code. (EXCEPTION: Do not derate this appliance
for altitude up to 2,000 (610 m) for natural gas and
4,500 feet (1,370 m) for LP Gas. Maintain the mani-
fold pressure at 3.5" w.c. for Natural Gas and 10.0"
w.c. for LP Gas.

HIGH ELEVATIONS

Input ratings are shown in BTU per hour and are
certified without deration for elevations up to 2,000
feet (610 m) for natural gas and 4,500 feet (1,370 m)
for LP gas above sea level.
In the USA installations with elevations above 2,000
feet (610 m) for natural gas and 4,500 feet (1,370 m)
for LP gas must be in accordance with the current
ANSI Z223.1/NFPA 54 and/or local codes having
jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 2,000 feet (610 m) for natural gas
and 4,500 feet (1,370 m) for LP gas.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause injury or property damage.
Refer to this manual for correct installation and oper-
ational procedures. For assistance or additional infor-
mation consult a qualified installer, service agency, or
the gas supplier.
88
Max.
Input Min. Input
Control BTU/h
Millivolt
38,000
Manual
Millivolt
36,000
Manual
38,000
36,000
Natural Liquid Propane
5.5" w.c. 11.0" w.c.
14.0" w.c. 14.0" w.c.
3.5" w.c. 10.0" w.c.

HORIZONTAL TERMINATION

The vent must rise vertically a minimum of 24" (610 mm)
off the top of the unit, before the first elbow. The horizontal
run may extend up to 20' (6m) and include a vertical rise
BTU/h
of up to 40' (12 m). (Figure 7) Horizontal termination must
also meet the criteria shown in Figures 10 through 12.
25,000
• Approved vent systems must terminate above and in-
25,000
cluding the heavy line in Figure 7.
• Two 45° elbows may be substituted for each single 90°
25,000
elbow.
• With a rise between 2' - 5', one 90° or two 45° elbows
25,000
may be used.
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
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
Fig. 7 Horizontal vent termination window.
Radiance Direct Vent Gas Heater
®
May use up to
three 90° Elbows
No Restrictor Plate
Required
One 90°
Elbow
Unacceptable
Venting Configuration
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Horizontal Run (in feet)
ST134b
Radiance
Horizontal
vent run
6/07
ST134a
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