UNVENTED (VENT-FREE) UNIVERSAL FIREBOX OWNER’S OPERATION AND INSTALLATION MANUAL PFS ® US Non-Circulating Models V32S, VFB32NC, V36S, V36SH, VFB36NC1, V42S, V42SH AND VFB42NC1 Circulating Models V32, V36, V42, CUVF36C, VFB32C, VFB36C1, VFB42C1, V36H and V42H Outside Air Models V32A, V32AS, VFB32AC, VFB32ANC, V36A, V36AS, V36ASH, V36AH, VFB36AC, VFB36ANC, V42A, V42AS, V42ASH, V42AH, VFB42AC, VFB42ANC WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causi
Table of Contents Safety................................................................... 2 Local Codes......................................................... 3 Product Features.................................................. 4 Locating Firebox................................................... 4 Product Specifications.......................................... 5 Air For Combustion and Ventilation...................... 7 Installation............................................................
Safety Continued Firebox front and screen become very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Firebox will remain hot for a time after shutdown. Allow surface to cool before touching. Carefully supervise young children when they are in the room with firebox. You must operate this fireplace with the provided fireplace screen, hood if provided, in place. Make sure these parts are in place and screens are closed before running firebox.
Product Features Operation Refractory brick liner This firebox is designed for use with approved ANSI Z21.11.2 decorative type unvented room heaters. (Physical size limitations apply. Refer to minimum firebox requirements supplied with log heater.) It requires no outside venting or chimney making installation easy and inexpensive. When used without the blower, the firebox requires no electricity making it ideal for emergency backup heat. Your firebox may feature a concrete refractory brick liner.
Product Specifications 32" Models Outside Air Kit Location (Optional) 221/2" 4" 8 1/8" 10 1/2" 8 1/8" 29/16" 5/8" 37/16" 815/16" 291/2" 19 1/2" 16 11/16" 12 1/4" 2 13/16" 25 /8" 1 36 /8" 3 347/16" Standoffs 41/4" 8 5/8" 361/2" Built-In Side Nailing Flanges 321/4" 187/16" 163/4" 33/8" 81/8" 29/16" Electrical Access Hole 6" 815/16" 93/4" 1415/16" 291/2" 19/16" Square Gas Line Access Holes 31/2" 21/4" 65/16" Front View Right Side View 108662-01L www.fmiproducts.
PRODUCT SPECIFICATIONS Continued 36" and 42" Models Note: If only one dimension is shown, the dimension is the same for both 36" and 42" models. Outside Air Kit Location (Optional) Firebox Top View Right Side View 6 www.fmiproducts.
Air For Combustion and Ventilation WARNING: This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever.
Air For Combustion and Ventilation Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length x width x height). Length x Width x Height =_______cu. ft.
AIR FOR COMBUSTION AND VENTILATION VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 4). You can also remove door into adjoining room (see option 3, Figure 3). Follow the National Fuel Gas Code, ANSI Z223.
INSTALLATION Continued IMPORTANT: Vent-free gas log heaters add moisture to the air. Although this is beneficial, installing firebox in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventilation, page 7. IMPORTANT: Make sure firebox is level. If firebox is not level, log set will not work properly. Note: Your firebox is designed to be used in zero clearance installations.
INSTALLATION NOTICE: If your installation does not meet the minimum clearances shown, you must do one of the following: • raise the mantel to an acceptable height • remove the mantel Table 1 Rough Opening Dimensions for Built-in Installation Front Width Depth Model (Inside to Inside) Height (Min.) 32" 36" 42" 34 7/8" 41 1/2" 48 5/8" 36 3/4" 40 1/2" 44 1/2" 16 1/4" 20 3/4" 22 5/8" Built-In Firebox Installation Built-in installation of this firebox involves installing firebox into a framed-in enclosure.
INSTALLATION Continued IMPORTANT: If installing blower accessory (circulating models with louvers only), see Hard-Wiring Firebox, page 16. 3. Carefully set firebox in front of rough opening with back of firebox inside wall opening. IMPORTANT: If installing a perimeter trim kit, see instructions included with trim accessory. You must install shoulder screws from trim kit now. 4. Carefully insert firebox into rough opening. 5.
INSTALLATION Continued Installing gas line NOTICE: A qualified service person must connect heater to gas supply. Follow all local codes. IMPORTANT: See Connecting to Gas Supply in your log set owner’s manual for details on gas hookup. You may run the gas line from either side of the firebox (see Figure 9). Decide which side you want to run the gas line from. Note: This is one option for installing shutoff valve. Check local codes for equipment shutoff valve location requirements.
INSTALLATION Continued Decide which way you intend to gain access into the bottom rear of the firebox to install the blower accessory. The lower front panel can be removed easily by snapping out the front with a flat blade screwdriver. Use caution not to scratch any surfaces. Models with louvered front panels can also be removed by inserting fingertips between slots and gently pulling out. DO NOT FORCE.
INSTALLATION Continued bracket (see Figure 14). Secure speed control to bracket with lock nut by pushing and turning lock nut with pliers clockwise until it is tight against bracket. 7. Remove knockout plug from louver panel by pressing top and bottom retaining clips (see Figure 11, page 13). 8. Place louver panel, louvers pointing up, back into framed opening. Align control shaft with rectangular opening by sliding control bracket along flange (see Figure 14). 9.
INSTALLATION Continued 3. Using screws provided, fasten upper flange of blower bracket to hearth pan and end flanges to leg stands (see Figure 16, page 15). Note: The wire assembly must be arranged in front of and away from fan blades to reach power receptacle plug. 4. Remove 2 connectors from ON/OFF rocker switch located on wiring harness (see Figure 17). 5. Insert rocker switch into lower lover panel with switch lever pointing outward. 6. Reconnect previously removed wire connectors onto switch terminals.
INSTALLATION Continued COMBUSTION AIR KIT MODEL AK4 (OPTIONAL) INSTALLING FIREPLACE HOOD AND SCREEN The outside air kit may be installed on the left side of the fireplace only. The vent can be installed through any outside wall a minimum of three feet below fireplace termination cap. The handle to operate the damper door for the outside air inlet will be located inside the left “screen pocket” of the firebox (see Figure 20). Pull the handle to open or push to close. 1.
Replacement Parts Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. Contact authorized dealers of this product. If they can’t supply original replacement part(s), call FMI PRODUCTS, LLC at 1-866672-6040. When calling, have ready: • your name • your address • model and serial numbers of your heater • how heater was malfunctioning • purchase date Usually, we will ask you to return the part to the factory.
ACCESSORIES Continued Mantels Face/Louver Panel Kits 32" WALL Mantels W32TU - 32" Unfinished, Traditional W32TO - 32" Oak Stain, Traditional W32CO - 32" Oak Stain, Classic W32DO - 32" Oak Stain, Dentil W32GO - 32" Oak Stain, Georgian 32" CORNER Mantels C32TU - 32" Unfinished, Traditional C32TO - 32" Oak Stain, Traditional C32CO - 32" Oak Stain, Classic C32GO - 32" Oak Stain, Georgian 36" WALL Mantels W36TU - 36" Unfinished, Traditional W36TO - 36" Oak Stain, Traditional 36" CORNER Mantels C36TU - 36" Unfi
Parts Models V32, V32A, V32S, V32AS, VFB32C, VFB32AC, VFB32NC, VFB32ANC 22 21 20 23 18 19 17 16 28 15 29 9 10 25 7 26 5 24 27 4 11 14 3 6 13 12 2 8 1 20 www.fmiproducts.
PARTS This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY NO.
PARTS Models CUVF36C, V36, V36A, V36S, V36AS, V36ASH, V36H, V36AH, V36SH, VFB36AC, VFB36ANC V42, V42A, V42S, V42AS, V42ASH, V42H, V42AH, V42SH, VFB42AC, VFB42ANC, VFB36NC1, VFB42NC1, VFB36C1, VFB42C1 19 18 17 16 20 14 15 13 26 22 12 5 11 24/25 29 28 23 4 21 31 30 32 10 6 9 3 2 8 1 22 www.fmiproducts.
PARTS This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. PART NUMBER CUVF36C V42S, V36S, V36AS V36, V36A V42AS V36ASH V36H, V42ASH V36SH, V36AH, V42SH, KEY VFB36NC1 VFB36C1 VFB42NC1 NO.
Warranty KEEP THIS WARRANTY Model (located on product or identification tag)______________________________ Serial No. (located on product or identification tag)___________________________ Date Purchased ___________________________ Keep receipt for warranty verification.