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Intrepid® Direct Vent - Rear Vent Gas Heater
Gas Specifications
Model
Fuel
INDVR Series
Nat
INDVR Series
LP
Air Shutter Setting
Minimum injector air inlet opening
Model
Natural Gas
INDVR Series
Gas Inlet and Manifold Pressures
Natural Gas
Inlet Minimum
Inlet Maximum
Manifold Pressure
The installation 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. (EXCEPTION:
Do not derate this appliance for altitude. Maintain the
manifold pressure at 3.5" w.c. for Natural Gas and 10"
w.c. for Propane.)
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to 4,500
feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations 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 4,500 feet (1,370m).
!
Improper installation, adjustment, alteration, service
or maintenance can cause injury or property damage.
Refer to this manual for correct installation and
operational procedures. For assistance or additional
information consult a qualified installer, service
agency, or the gas supplier.
3-90-20306761
Max.
Gas
Input
Control
BTU/h
Millivolt
18,500
Millivolt
16,000
LP (Propane)
1/2 Open
1/2 Open
LP (Propane)
5.5" W.C.
11.0" W.C.
14.0" W.C.
14.0" W.C.
3.5" W.C.
10" W.C.
WARNING
Vermont Castings • Intrepid DV Owner's Manual_R3 • 12/16
Horizontal Termination
Except for straight-through the wall vent installations.
Min.
The vent must rise vertically a minimum of 24" (610 mm)
Input
after the first elbow directly off the back of the unit, before
BTU/h
the next elbow. The horizontal run may extend up to 20' (6
12,500
m) and include a vertical rise of up to 40' (12 m). (Figure 7)
12,000
Horizontal termination must also meet the criteria shown in
Figures 11 and 12.
• Approved vent systems must terminate above and including
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 (Excluding the first elbow directly off the back of
the unit.
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
Two 90°
Elbows
3
2
1
0
1
2
Figure 7 - Horizontal vent termination window.
Unacceptable
Venting Configuration
May use up to
four 90° Elbows
(Including elbow
directly off back of
unit.)
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)
ST134a
FDV28
Horizontal
vent run
12/3/99 djt
areas mod
1/11/00 dj
8
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