Gas Specifications; Vent Terminations & Clearances - Vermont Castings Intrepid INDVRBDSB Installation & Operating Manual

F. Gas Specifications
Gas Specifications
Model Fuel
INDVR Series Nat
INDVR Series LP
INDVR-IFT Nat
INDVR-IFT LP
Air Shutter Setting
Minimum injector air inlet opening
Model Natural Gas
INDVR Series 1/2 Open
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.
88
Max.
Gas Input
Control BTU/h BTU/h
Millivolt 17,000 12,500
Millivolt 16,000 12,000
IFT 17,000 12,500
IFT 16,000 12,000
LP (Propane)
1/2 Open
LP (Propane)
5.0" 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-IFT Owner's Manual_R20 • 11/21
G. Vent Terminations & Clearances
Horizontal Termination
Except for straight-through the wall vent installations. The
Min.
vent must rise vertically a minimum of 24" (610 mm) after
Input
the first elbow directly off the back of the unit, before the
next elbow. The horizontal run may extend up to 20' (6 m)
and include a vertical rise of up to 40' (12 m), Figure 2.8.
• Horizontal termination must also meet the criteria
shown in Figures 2.10 and 2.11.
• Approved vent systems must terminate above and
including the heavy line, Figure 2.8.
• 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.
• 24" maximum horizontal termination directly off back.
• Corner installation using 45° elbow, maximum horizontal
after elbow is 24 inches.
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
Two 90°
4
Elbows
3
2
1
0
1 2
Figure 2.8 - 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 modi
1/11/00 dj
3-90-30007474