6W415-1103 / A / 08.07.13EN2.3 GENERAL INFORMATION4.1BThe installation must conform with local codes or, inabsence of local codes, the National Gas and PropaneInstallation Code CSA B149.1 in Canada, or the NationalFuel Gas Code, ANSI Z223.1 / NFPA 54 in the UnitedStates. Suitable for mobile home installation if installed inaccordance with the current standard CAN/CSA Z240MHSeries, for gas equipped mobile homes, in Canada orANSI Z223.1 and NFPA 54 in the United States.As long as the required clearance to combustibles ismaintained, the most desirable and beneficial locationfor an appliance is in the center of a building, therebyallowing the most efficient use of the heat created. The location of windows, doors and the traffic flow in theroom where the appliance is to be located should be considered. If possible, you should choose a locationwhere the vent will pass through the house without cutting a floor or roof joist.If the appliance is installed directly on carpeting, vinyl tile or other combustible material other than woodflooring, the appliance shall be installed on a metal or wood panel extending the full width and depth.Some appliances have optional fans or blowers. If an optional fan or blower is installed, the junction box mustbe electrically connected and grounded in accordance with local codes, use the current CSA C22.1 CanadianElectrical Code in Canada or the ANSI/NFPA 70 National Electrical code in the United States.We suggest that our gashearth products be installedand serviced by professionalswho are certified in the U.S.by the National FireplaceInstitute® (NFI) as NFI GasSpecialistswww.nficertified.orgFOR YOUR SATISFACTION, THIS APPLIANCE HAS BEEN TEST-FIRED TO ASSURE ITS OPERATION ANDQUALITY!GD70NG LPAltitude (FT) 0-4,500 0-4,500Max. Input (BTU/HR) 35,000 33,000Max. Output (BTU/HR) 28,350 26,400Efficiency (w/the fan on) 81% 80%A.F.U.E. 64% 65%Min. Inlet Gas Supply Pressure 4.5” (11.2mb) Water Column 11" (27.4mb) Water ColumnMax. Inlet Gas Supply Pressure 7" (17.4mb) Water Column 13" (32.4mb) Water ColumnManifold Pressure (Under Flow Conditions) 3.5" (8.7mb) Water Column 10" (24.9mb) Water ColumnWhen the appliance is installed at elevations above 4,500ft (1371m), and in the absence of specific recommendationsfrom the local authority having jurisdiction, the certified high altitude input rating shall be reduced at the rate of 4% foreach additional 1,000ft (305m).No external electricity (110 volts or 24 volts) is required for the gas system operation.Expansion / contraction noises during heating up and cooling down cycles are normal and are to be expected.Change in flame appearance from “HI” to “LO” is more evident in natural gas than in propane.8” (203mm) is the minimum bend radius allowed for the 7” (178mm) diameter flexible air liner.