Gas Specifications; Gas Inlet And Manifold Pressures; High Elevations; Horizontal Termination - Direct Vent Only - Vermont Castings OXDV30NVSB Installation And Operating Instructions Manual

Oxford Direct Vent / Natural Vent Gas Heater

Gas Specifications

Model Fuel Gas Control
2465 Nat Millivolt
2466 Prop Millivolt
Weight: Fully assembled; 202 lbs.

Gas Inlet and Manifold Pressures

Inlet Minimum
Inlet Maximum
Manifold Pressure
Oxford Direct Vent/Natural Vent
Certified to:
ANSI Z21.88 / CSA 2.33 Latest Edition
Vented Gas Fireplace Heaters
The installation of your 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. (EX-
CEPTION: Do not derate this appliance for altitude
up to 4,500 feet (1,370 m). Maintain the manifold
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 4,500
feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installations must be in accordance with the cur-
rent ANSI Z223.1/NFPA 54 and/or local codes hav-
ing jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370 m).
WARNING: Improper installation, adjustment, alter-
ation, service or maintenance can cause injury or
property damage. Refer to this manual for correct
installation and operational procedures. For assis-
tance or additional information consult a qualified
installer, service agency, or the gas supplier.
8
Max. Min.
Input Input
BTU/h BTU/h
28,000 20,000
28,000 19,000
Natural LP (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 -
Direct Vent ONLY
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' (6 m) and include a vertical rise
of up to 40' (12 m). (Fig. 7) Horizontal termination must
also meet the criteria shown in Figures 9 through 11.
• Approved vent systems must terminate above and in-
cluding the heavy line in Figure 7.
• Two 45° elbows may be substituted for each single 90°
elbow.
• With a rise between 2' - 5', one 90° or two 45° elbows
may be used.
40
39
38
37
36
35
34
33
32
31
30
29
May use up to three
28
27
26
25
24
23
22
21
20
19
18
16
15
14
13
12
11
10
9
8
7
6
5
One 90°
4
Elbow
3
2
1
0
1 2 3 4 5 6 7
Horizontal Run (in feet)
Fig. 7 Horizontal vent termination window.
90° Elbows
Unacceptable Venting
Configuration
8 9 10 11 12 13 14 15 16 17 18 19 20
20306762
ST134a
FDV28
Horizontal
vent run
12/3/99 djt
areas modified
1/11/00 djt
ST134a