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Vermont Castings Jefferson Vent Free Gas Heater
Clearance Requirements
Minimum Clearances to
Combustible Materials
Maintain clearance, (empty space), between combus-
tible materials and the heater as specified.
Hearth Requirements
The JUVS must be installed on rigid flooring. If the
appliance is installed on any combustible surface other
than wood flooring, such as carpet or tile, a metal or
wood panel must be installed to extend the full length
and width of the unit.
Alcove Clearances
A: Ceiling .................. 27¹⁄₂” C: Rear Wall ................... 4”
B: Side Wall.............. 4” D: Max. Alcove Depth..... 48”
ST103
B
C
D
B
A
Fig. 6 Minimum wall clearances.
WARNING
• Do not install this heater in a bathroom or
bedroom.
• Installation of this heater must conform with
Local Codes or in the absence of Local
Codes, with the National Fuel Gas Code,
ANSI Z223.1.
• This heater creates warm air currents. These
currents move heat to wall surfaces next to
the heater. Installing the heater next to vinyl
or cloth wall coverings or operating the
heater where impurities in the air such as
tobacco smoke exist, may discolor walls.
• Do not use a blower insert, heat exchanger
insert or other accessory not approved with
this heater.
Mantel Clearance
Wall
Stove
FP599b
10”
12”
8”
6”
4”
2”
1”
12”
10”
8”
6”
4”
2”
1”
Fig. 7 Mantel clearance at 45°.
NOTE: Mantel clearances will apply to an alcove
installation.