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520008056
WARNING
This appliance is for installation in a solid-fuel
burning masonry, fireplace with a working flue,
a U.L.-127 listed manufactured solid-fuel burn-
ing fireplace, in any Majestic ventless firebox,
or in any listed ventless firebox enclosure
certified to I.A.S. U.S. Requirement 2-97 or
ANSI Z21.91.
NOTICE
This is an unvented gas-fired heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventila-
tion air must be provided. Refer to Pages 7 and 8.
Installation Requirements
The fireplace must meet the minimum dimensions listed below. (Fig. 1) Do not install the logset if the fireplace does
not meet these minimums.
Pressure Test Points
The gas control is equipped with a captured screw-type
pressure test point, therefore it is not necessary to pro-
vide a 1/8” test point upstream of the control.
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 car-
pet 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.
A. Front width B. Rear width
C. Depth D. Height
Fig. 1 Minimum fireplace dimensions.
FD370-2
Fireplace
dimensions/vl18
3/25/99
A
B
D
C
FD370-2
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration from elevations up to
4,500 feet (1,370m) above sea level.
Nuisance outages may occur at altitudes above
4,500 feet (1,370m) if dirt, dust, lint and/or cob-
webs are allowed to accumulate on burner and/or
ODS pilot. Monthly inspection and cleaning is
recommended for altitudes above 4,500 feet
(1,370m)
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)
Min. Fireplace Dimensions
A B C D BTU/hr.
Logset Gas Front Rear Overall Overall Pressure (w.c.) Manifold Low Med. High Air Shutter
Width Width Depth Height Min. Max. Pressure Input Input Input Setting
UVHK36MN Natural 28” 18” 14¹⁄₂” 17” 5.5” 14.0” 3.5” 10,000 22,500 36,000 .136” (1)
UVHK31MP Propane 28” 18” 14¹⁄₂” 17” 11.0” 14.0” 11.0” 10,000 20,000 31,000 .136” (2)
UVHK29MN Natural 23” 16” 14
¹⁄₂” 17” 5.5” 14.0” 3.5” 16,000 -- 29,000 .136” (1)
UVHK23MP Propane 23” 16” 14
¹⁄₂” 17” 11.0” 14.0” 11.0” 14,000 -- 23,000 .136” (2)
Inlet Supply