Owner's Manual - At Andiron Fireplace Shop

B. Design and Installation ConsiderationsNOTICE: Check building codes prior to installation.• Installation MUST comply with local, regional, state andnational codes and regulations.• Consult insurance carrier, local building inspector, fi reoffi cials or authorities having jurisdiction over restrictions,installation inspection and permits.Before installing, determine the following:• Where the fi replace is to be installed.• The vent system confi guration to be used.• Gas supply piping.• Framing and fi nishing details.• Whether optional accessories are desired.C. DraftDraft is the pressure difference needed to vent fi replacessuccessfully. When a fi replace is drafting successfully, allcombustion by-products are exiting the home through thechimney.Considerations for successful draft include:• Preventing negative pressure• Location of fi replace and chimneyNOTICE: Hearth & Home Technologies assumes noresponsibility for the improper performance of the fi replacesystem caused by:• Inadequate draft due to environmental conditions• Downdrafts• Tight sealing construction of the structure• Mechanical exhausting devices• Improper positioning of the chimney in a not-recommendedlocation on the roof.D. Negative PressureWARNING! Risk of Asphyxiation! Negative pressure cancause spillage of combustion fumes and soot. Fire mustdraft properly for safe operation.Negative pressure results from the imbalance of air availablefor the fi replace to operate properly. It can be strongestin lower levels of the house.Causes include:• Exhaust fans (kitchen, bath, etc.)• Range hoods• Combustion air requirements for furnaces, water heatersand other combustion appliances• Clothes dryers• Location of return-air vents to furnace or air conditioning• Imbalances of the HVAC air handling system• Upper level air leaks such as:- Recessed lighting- Attic hatch- Duct leaksTo minimize the effects of negative air pressure:• Ensure adequate outdoor air for all combustion appliancesand exhaust equipment• Ensure furnace and air conditioning return vents are notlocated in the immediate vicinity of the fi replace• Avoid installing the fireplace near doors, walkways or smallisolated spaces• Recessed lighting should be a “sealed can” design• Attic hatches weather stripped or sealed• Attic mounted duct work and air handler joints and seamstaped or sealed• Basement installations should be avoidedNOTICE: The fireplace provides some outside air forcombustion. Other methods may be necessary if more airis required.NOTICE: Hearth & Home Technologies Inc. recommends theuse of direct vent appliances in basements.14Heatilator • Birmingham BIR42 • 4059-308 Rev C • 07/08