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Vent the room directly to the outdoors. (Provide one square inch of opening for each 4,000 BTU/hour) For further information on ventilation guidelines and sizing specifications, follow the National Fuel Gas Code/NFPA 54/ANSI Z223.1, Section 5.3. If the total BTU/hour used by the appliances is less than the maximum BTU/hr the space can support, the room meets the Unconfined Spacecriteria and no further ventilation is needed. WARNING This heater shall not be installed in a confined space unless provisions are made for adequate combustion and ventilation air. WARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992 Section 5.3. Option 1 - Vents to Adjoining Rooms Option 3 - Vents to Adjoining Room Option 2 - Remove Door to Adjoining Room VO370-2 Fig. 5 Supplementing ventilation air. Wall 10” 12” 8” 6” 4” 2” 10” 8” 6” 4” 2” 1” Wall 10” 12” 8” 6” 4” 2” 10” 8” 6” 4” 2” 1” Vermont Castings Jefferson Vent Free Gas Heater Clearance Requirements Hearth Requirements Minimum Clearances to Combustible Materials 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 Maintain clearance, (empty space), between combus and width of the unit. tible materials and the heater as specified. Alcove Clearances ST103 B C DB A A: Ceiling .................. 27Z\x” C: Rear Wall ................... 4” B: Side Wall .............. 4” D: Max. Alcove Depth ..... 48” 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. Fig. 6 Minimum wall clearances. Mantel Clearance 12” 1” Stove FP599b Fig. 7 Mantel clearance at 45°. NOTE: Mantel clearances will apply to an alcove installation. Vermont Castings Jefferson Vent Free Gas Heater Optional Fan Kit Installation (2960/FK28) Assembly Procedures 1. Attach the fan to the rear shroud by engaging the upper flange of the fan skirt under the lower edge of the shroud and secure the skirt with the four screws and one star washer provided. (Fig. 8, 9 ) ST241 Fig. 9 Correct position of fan skirt installation. Upper Flange To Control Valve ST240 Fig. 8 Place upper flange behind lower edge of shroud. Star Washer 2. Disconnect the snapstat module from the leads inside the snapstat bracket. (Fig. 10) 3. Bend...

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