B-Vent Indoor Fireplace

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Our B-Vent fireplace is an efficient model that is primarily meant to be used in bedrooms (due to the safety concerns with carbon monoxide emissons). The B-Vent model offers an automated safety shut off valve – ensuring your fire does not burn too long or too hot. B-Vent fireplaces must be installed through the home and terminate above the roofline. They use room air for combustion, and all combustion fumes are vented outside your home. This model is a gas-only fireplace option which requires a special double-walled 10″ metal chimney pipe (purchased separately). The customized chimney pipe allows for higher reflection similar to a dryer, and stays hotter to draw gases out more quickly. The B-Vent fireplace also requires an accessory kit which FireRock stocks, and is our only model that we stock gas logs for. This masonry fireplace model can be installed directly onto a combustible subfloor.

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  • Available sizes: 30″, 36″, 42″, 48″
  • Design: Allows for a true masonry, gas-only fireplace with specialized 10″ diameter, double wall B-Venting system for exhaust flue gases
  • Compliances: UL 127, ANSI Z21.50, wind load, seismic testing, ICC report issued
  • Applications: Can be installed directly on a wooden or other combustible floor without a riser kit
  • Check local building codes for restrictions, specifically in bedrooms
  • Requirements: Use only with vented decorative gas logs that comply with ANSI Z21.11.2
  • Clearance to Combustibles: 0″ to floor, 1″ to sides and back of firebox and smoke chamber

Click Here for the Installation Manual

ICC Report

Clearance to Combustibles

Specifications

FIREROCK B-VENT MODEL DIMENSIONS

Specs based off Conventional units. All measurements listed are based on dry stack units before firebrick is installed. Dimensions are nominal and are given for design and framing reference only. Please consult installation manual for all details and requirements before making final design layout decisions.

MODEL WIDTH HEIGHT DEPTH BTU WEIGHT
Opening Firebox
Rear		 Overall Opening Firebox Smoke
Chamber		 Overall Firebox Overall
30″ B Vent 32.5″ 22″ 38″ 33.75″ 37.5″ 22.375″ 59.875″ 22.5″ 28.5″ 44,000 1,800 lbs
36″ B Vent 38.5″ 28″ 44″ 33.75″ 37.5″ 31.5625″ 69.0625″ 22.5″ 28.5″ 68,000 2,150 lbs
42″ B Vent 44.5″ 34″ 50″ 33.75″ 37.5″ 31.5625″ 69.0625″ 22.5″ 28.5″ 68,000 2,410 lbs
48″ B Vent 50.5″ 40″ 56″ 33.75″ 37.5″ 40.75″ 78.25″ 22.5″ 28.5″ 78,000 2,900 lbs

CLEARANCE TO COMBUSTIBLES

Opening to Sidewall 28″
Opening to Combustible Trim 12″
Opening to Mantle with 8″ Depth 16″
Noncombustible Hearth Extension 20″ in front; 8″ each side
Firebox & Smoke Chamber to Combustibles or Framing 1″
Smoke Chamber (Front Wall & Top) to Wood Framing 1″

APPROVALS & CERTIFICATIONS

Complies with UL 127, ANSI Z21.50, wind load, seismic testing, ICC report issued For use with unvented decorative gas logs listed and labeled as complying with ANSI Z21.11.2
B-Vent model is the only fireplace that FireRock stocks gas logs for Maximum heat input of gas logs must be no greater than 78,000 BTUs

B-VENT KIT (SOLD SEPARATELY)

Draft Diverter, Chimney Flap Safety Device Safety Shut-Off Switch Device, Draft Hood Connector from Simspon Dura-vent
High-Temp Wiring Harness, Masonry 10″ Chimney Base Properly Sized Gas Log Appliance

AVAILABLE ACCESSORIES – Click Links Below

FireRock Adhesive Mortar, Installation Kit Full & Split Firebrick
Simpson B-Vent Metal Chimney Outside Air Kit

CAD RESOURCES

View Technical Resources for All Fireplace Models

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