W415-1259 / 10.22.136EN4.1BThe 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.orgThis appliance is equipped with a power back up control system. Four 1.5 volt “AA” batteries (not supplied) arerequired for the battery pack included in the system. Use Alkaline batteries only.2.3 GENERAL INFORMATIONFOR YOUR SATISFACTION, THIS APPLIANCE HAS BEEN TEST-FIRED TO ASSURE ITS OPERATIONAND QUALITY!This appliance is approved for bathroom, bedroom and bed-sitting room installations and is suitable for mobilehome installations.This appliance is equipped with ceramic glass. Replacement glass must be obtained from your authorizeddealer / distributor and is identified in the replacement parts list. Do not substitute materials.This appliance is not convertible for use with other gases, unless a certified kit is used.Expansion / contraction noises during heating up and cooling down cycles are normal and are to be expected.Changes in flame appearance from “HI” to “LO” is more evident in natural gas than in propane.Use only accessories designed for and listed with your specific appliance.High ElevationsInput ratings are shown in Btu per hour and are certified without de-rating up to 4,500 feet (1371.6mm) abovesea level. For Installations at the elevations above 4,500 feet (1371.6mm) and in the absence of specificrecommendations from the local authority having jurisdiction, the high altitude input rating shall be reduced at therate of 4% for each additional 1,000 feet (304.8mm).GAS SPECIFICATIONSModel Fuel GasControlMax. InputBTU/hMin. InputBTU/hHDX40NT-1 Nat IPI Hi/Lo 40,000 26,000HDX40PT-1 Prop* IPI Hi/Lo 36,000 26,000GAS INLET AND MANIFOLDPRESSURESNatural PropaneMinimum Inlet 4.5” w.c.(11.2mb)11.0” w.c.(27.4mb)Maximum Inlet 7.0” w.c.(17.4mb)13.0” w.c.(32.4mb)Manifold Pressure 3.5” w.c.(8.7mb)10.0” w.c.(25mb)EFFICIENCY RATINGSModel Steady State(%) AFUE%**HDX40NT-1 61.5% 59.5%HDX40PT-1 61.5% 59.5%IPI - Intermittent Pilot Ignition System* Using conversion kit** Maximum ValuesConversions must be made by a qualified service technicianusing Wolf Steel specified and approved parts.