T H E C H AR L E S T O N S E R I E S VFBC32A VFBC36A VFBC42A Installation and Operating Manual Vent Free Universal Firebox Z21.91 2007 FOR USE ONLY WITH A LISTED GAS-FIRED UNVENTED DECORATIVE ROOM HEATER NOT TO EXCEED 40,000 BTU/H.
Congratulations! INSTALLER / CONSUMER SAFETY INFORMATION Read and save these instructions This book contains your installation instructions and should be kept in a safe place. For you to realize all the advantages and use of the reliable service that has been engineered into your Sure Heat Manufacturing fireplace, you must carefully follow all of the instructions contained in this book regarding installation and operation of the fireplace.
Safety Information IMPORTANT 14. Read these instructions carefully before installing or trying to operate a vent-free gas heater in this firebox. • Any change to this heater or its controls can be dangerous. Candles, incense oil lamps, etc. produce combustion byproducts including soot. Vent-free appliances will not filter or clean soot produced by these types of products. In addition, the smoke and/or aromatics (scents) may be burned in the vent-free appliance which can produce odors.
Product Features Do not attempt to burn wood, solid fuels, vented gas log sets, or any other combustible in this unvented firebox. Also, do not install a vent-free gas log set in this firebox if the minimum clearance and height requirements of the log set are too large for this firebox. You have purchased a vent-free firebox. This installation manual will enable you to obtain a safe, efficient and dependable installation of your vent-free firebox system.
Specifications VFBC 32A, VFBC 36A, VFBC 42A Design Certified Certified To Z21.91 Ventless Firebox Enclosures For Gas Fired Decorative Type Unvented Room Heaters For use with Any ANSI Z21.11.2 Unvented Gas Log Sets (Providing the required firebox size does not exceed the dimensions of this enclosure) B C Fig. 1: Firebox Internal Dimensions A Hearth Dimensions MODEL Front Width (Brick to Brick) A Back Width (Brick to Brick) B Hearth Depth C 32" 18.5" (812.8 mm) (469.9 mm) VFBC36A 36" (914.
Framing Specifications L M I G K L J HEADER E H B D C F Fig. 2 A VFBC 32A VFBC 36A VFBC 42A A 36 1/4" 40 1/4" 46 1/4" B 21 1/4" 21 1/4" 21 1/4" C 32" 36" 42" D 6" 6" 6" E 34 1/4" 34 1/4" F 9" 9" G 20 22/25" 20 22/25" 20 22/25" H 6 3/8" 6 3/8" 6 3/8" I 21 22/25" 25 22/25" 31 22/25" J K 63 1.2” 31 3/8” 68" 74 1/2" L 44.
Installation Instructions Locating the Fireplace Figure 3 shows some of the many ways your fireplace may be installed. Consider the traffic pattern in your room and the location of doors and windows. Moving air from ceiling fans, open doors and heat registers may cause the flames to soot. If a disturbance is found that affects the flames, it must be eliminated by turning off the ceiling fan, closing the door or closing or moving the heat register. A corner location may be best where space is limited.
Installation Instructions Drafts b) A heat reducing mantel guard is shipped with the fireplace. Use of this mantel guard is required in order to reduce mantel heights as shown in figure 5. When the mantel guard is installed, a combustible mantel piece may project 2" from the wall at 6" above the fireplace opening. A 6" mantel projection at 13" above the fireplace opening and a 10" projection at 22" above the opening.
Installation Instructions Step 3: Level the Firebox Check the level of the firebox on the top edge of the fireplace face. Shim if necessary. To install the required mantel guard/hood you will need a flathead screwdriver. The mantel guard has a series of holes along the top edge. Loosen the screws in the upper channel (top front edge) of the firebox. Line up slots in mantel guard with holes in the upper channel of the firebox. The mantel guard will fit tightly in the top front edge of the fireplace opening.
Installation Instructions Fireplace Screens Hearth Extension An optional hearth extension may be used, but is not required for these fireboxes. Fireplace screens, hanging rods and necessary hardware are packed with the Mantel Guard/Hood. These screens MUST be installed on the fireplace for safe operation. A raised hearth extension may be used as shown in Figure 9. 1. Remove packing and lay screens flat. 2. Insert Screen Mesh Wire Rods into the small rings at the top of the Screen Mesh Panels.
Installation Instructions Step 6: Optional Procedure for Cold Climate Installations The insulation and sealing of the enclosure around the fireplace is very important in cold climates. If the enclosure is insulated and sealed properly, you can avoid future cold air problems. The time taken to install the firebox correctly is well worthwhile. The following steps are to stop potential cold air problems.
Installation Instructions Optional Electrical Junction Box If installation of an accessory blower, or other “linevoltage” powered accessory is planned, you should install the “J”- Box accessory (Included with BL-101) and wiring at the time of fireplace installation. IT WILL NOT BE PRACTICAL TO INSTALL THIS LATER! Wiring should be connected at a customer provided junction box, outside the firebox. Electrical Services Junction Box Wiring (Optional) 1.
Parts and Servicing 1 2 3 6 4 ITEM 1 2 3 4 5 6 5 DESCRIPTION PART NUMBER Firebrick Left Firebrick Middle Firebrick Right Rod, Screen (2) Mantel Guard (Hood) Screen, Mesh (2) VFBC32A VFBC36A VFBC42A 23421102 23321102 23361102 23421202 23321202 23361202 23361302 23361302 23361302 20363001 20323001 20363001 23421402 23321402 23361402 22362001 22362001 22362001 Servicing Contact Sure Heat Manufacturing for questions concerning prices and policies covering replacement parts.
LIMITED LIFETIME WARRANTY Limited Warranty shall apply to the original purchaser at the original installation point only The following components are warranted for life to the original owner, subject of proof of purchase: Firebox, Combustion Changer, Heat Exchanger. General Warranty: This Limited Lifetime Warranty will be void if the appliance is not installed by a qualified installer in accordance with the installation instructions.
