10For altitudes above 2,000 feet (In Canada 4,500 FT/1370 M), the orificeshould be de-rated by 4% for every 1,000 feet to maintain the proper ratioof gas to air. Improper orifice sizing may result in damage and unsafeconditions. Changing the orifice should only be done by a qualified servicetechnician. Contact your IHP dealer for proper orifice sizes.In Canada - CAN/CGA-2.17-M91 (R2009) (high altitude):THE coNVERSIoN SHALL BE cARRIED ouT BY A MANuFAcTuRER’SAUTHORIZED REPRESENTATIVE, IN ACCORDANCE WITH THE REQUIRE-MENTS OF THE MANUFACTURER, PROVINCIAL OR TERRITORIALAUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITHTHE REQUIREMENTS OF THE CAN/CGA-B149.1 OR CAN/CGA-B149.2INSTALLATION CODES.ORIFICE SIZE/ALTITUDE ADJUSTMENT IMPORTANT: When installing these appliances into a factorybuilt fireplace or heat-form, the air flow within and around thefireplace shall not be altered by the installation of the insert(i.e. DO NOT BLOCK louvers or cooling air inlet or outlet ports,circulating air chambers in a steel fireplace liner or metal heatcirculator).THE FIREPLACE INSERTSince there are always several potential sources of fire in any home, werecommend installing smoke detectors. If possible, install the smokedetector in a hallway adjacent to the room (to reduce the possibility ofoccasional false activation from the heat produced by the appliance). Ifyour local code requires a smoke detector be installed within the sameroom, you must follow the requirements of your local code. Check withyour local building department for requirements in your area.SMOKE DETECTORSWARNINGTHIS FIREPLACE HAS BEEN ALTERED TOACCOMMODATE A FIREPLACE INSERT ANDSHOULD BE INSPECTED BY A QUALIFIEDPERSON PRIOR TO RE-USE AS ACONVENTIONAL FIREPLACE.• Must conform with all local, state and national installation codes. Inthe absence of local codes, the installation must conform with NationalFuel Gas Code ANSI Z223.1 - latest edition, also known as NFPA 54(In Canada, the current CAN/CGA B149.1 installation code). Refer tothe National Fuel Gas Code and local zoning and code authorities fordetails on installation requirements.• Manufactured home installations (USA only) must conform with theManufactured Home Construction and Safety Standard, Title 24 CFR,Part 3280, or, when such a standard is not applicable, the Standard forManufactured Home Installations, ANSI/NCSBCS A225.1, or Standardfor Gas Equipped Recreational Vehicles and Mobile Housing, CSAZ240.4.• Must be vented directly to the outside in accordance with the latestedition of the National Fuel Gas Code and must never be attached toa chimney serving a separate solid fuel burning appliance.• Has been certified for use with either natural gas or propane.• Is NOT for use with solid fuels.• Is approved for sitting rooms and/or bedrooms.• This appliance is suitable for installation into masonry or factory builtfireplaces.Fireplace RequirementsThese heaters are designed to be installed into an existing masonryfireplace (built to UBC 37 or ULC S628 standards) or factory built solidfuel, wood burning fireplace (listed to UL 127 or ULC S610) only. Allexhaust gases must be vented outside the structure. Combustion airis drawn from outside the structure. When installing in a factory builtfireplace, the fireplace grate must be removed and the damper must beremoved or secured open.CAUTION• Trim panels or surrounds must not seal ventila-tion openings in the existing fireplace that theappliance is installed in.• The fireplace in which this gas insert is to beinstalled must be thoroughly cleaned if it hasbeen used to burn wood or synthetic logs. Havethe chimney and all inside surfaces of the fire-place brushed and vacuumed so that no soot,embers, or loose combustion deposits can bedrawn into the heat circulation blower and blowninto the living area.• If any portion of the chimney system shows signsof structural or mechanical weaknesses, suchas: cracks, leaky joints, corroded or warpedsurfaces, the faulty portion must be repairedor replaced prior to installing this appliance.• The factory built firebox must accept the insertwithout modification other than removing boltedor screwed together pieces such as baffles /smoke shelf / deflectors, ash lips, glass door,screen or door tracks, log grates, refractory ormasonry lining and damper assemblies. Anyfireplace component, which is removed, must beretained so they can be reinstalled to restore thefireplace to its original operating condition. Theremoval of any part must not alter the integrityof the outer shell of the pre-engineered fireplacecabinet in any way. Any parts removed must bereplaceable. If any components are removedfrom (or altered) from the existing fireplace, aWarning Label (see Figure 1) must be affixedinside the fireplace firebox, so that it shall bevisible upon removal of the fireplace insert.NOTE: RTV high temperature silicone is anapproved adhesive to affix the label.Figure 1 - Fireplace Warning Label