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3-90-733069
Monessen • Sundance VF Installation Manual_R1 • 04/17
The installation of your Monessen 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.
(EXCEPTION: Do not derate this appliance for altitude up to
4,500 feet (1,370m). Maintain the manifold pressure at 3.5”
w.c. for Natural Gas and 11.0” w.c. for LP Gas.
Sundance Vent-Free
Certified to:
ANSI Z21.11.2, Latest Edition
Unvented Heaters
G. High Elevations
Input ratings are shown in Btu per hour and are certified
without deration from elevations up to 4,500 feet (1,370
m) above sea level.
Nuisance outages may occur at altitudes above 4,500 feet
(1,370 m) if dirt, dust, lint and/or cobwebs are allowed
to accumulate on burner and/or ODS pilot. Monthly
inspection and cleaning is recommended for altitudes
above 4,500 feet (1,370 m)
For elevations above 4,500 feet (1,370 m), installations
must be in accordance with the current ANSI Z223.1/
NFPA 54 and/or local codes having jurisdiction.
*Natural Gas units with air shutter fully closed and rotated
with bend outside of burner for less restriction. Propane
units have no air shutter.
Firebox weight / shipping
110 lbs.
H. Odor During Operation
Neither natural gas nor propane gas give off an odor when
burned. The nature of a vent free combustion system,
however, is such that odors may occasionally be produced
during heater operation when impurities exist in the immediate
area. Cleaning solutions, paint, solvents, cigarette smoke,
candles, adhesives, new carpet or textiles, etc., all can create
fumes. These fumes may mix with combustion air and can
create odor. Such odors will disappear over time, however the
condition can be alleviated by opening a window or otherwise
providing additional ventilation to the area.
Gas Specifications
Model
Fuel
Gas
Control
Max
Input
BTU/h
Min
Input
BTU/h
Air
Shutter
Setting*
4050
Nat.
Millivolt
28,000
19,500
Fully
Closed
4051
Prop
Millivolt
28,000
19,500
N/A
Gas Inlet & Manifold Pressures
Inlet Minimum
Natural
LP (Propane)
5.5” w.c.
11” w.c.
Inlet Maximum
14” w.c.
14” w.c.
Manifold
Pressure
3.5” w.c.
10” w.c. (MP)
11” w.c. (RP)
Failure to keep the primary air opening(s) of the burner(s)
clean may result in sooting and property damage.
WARNING
!
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.
WARNING
!
E. Gas Specifications
F. Gas Inlet & Manifold Pressures
