High Elevations; Horizontal Termination - Vermont Castings 2950 Installation And Operating Manual

Vermont Castings Pinnacle & Stardance Direct Vent - Rear Vent Gas Heaters
Pinnacle / Stardance
Direct Vent / Rear Vent
Certified to:
ANSI Z21.88b-2001 / CSA Z2.33b-2001
Vented Gas Fireplace Heaters
The installation must conform with local codes or, in
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1 - 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 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).
WARNING: Improper installation, adjust-
ment, 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.
20003457

Horizontal Termination

The vent must rise vertically a minimum of 24"
(610mm) after the first elbow directly off the back of the
unit, before the next elbow. The horizontal run may
extend up to 20' (6m) and include a vertical rise of up
to 40' (12m). (Fig. 7) Horizontal termination must also
meet the criteria shown in Figures 9 and 10.
• 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
May use up to
15
three 90° Elbows
14
(Excluding elbow
13
directly off back
of unit.)
12
11
10
9
8
7
6
5
One 90°
4
Elbow*
3
2
1
0
1 2 3 4 5 6 7 8
Horizontal Run (in feet)
Fig. 7 Horizontal vent termination window.
* Not the transition elbow.
Unacceptable
Venting Configuration
Unacceptable
Venting Configuration
9 10 11 12 13 14 15 16 17 18 19 20
ST134f
7