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• General (co n t'd) The heaters are not certified as residential heating equipment and should Models SC, HSC, SCA, SCB, and SCE are design-certified by the not be used as such. Canadian Standards Association to ANSI Standards and approved to Clearances from the heater and vent to combustible construction or CAN/CGA Standards.All models are available for use with either natu- material in storage must conform with the National Fuel Gas Code ral or propane gas.The type of gas,the firing rate,and the electrical ANSI Z223.1a(latest edition)pertaining to gas-burning devices,and characteristics are on the unit rating plate. such material must not attain a temperature over 160°F by continued These separated combustion units are designed and manufactured in operation of the heater. accordance with the ANSI definition of separated combustion.That WARNING: The Model SC duct furnace is not definition reads,"Separated Combustion System Appliance:A system consisting of an appliance and a vent cap(s)supplied by the manufac- certified or approved for use in drying or process turer,and(1)combustion air connections between the appliance and applications.If the SC duct furnace is to be used the outside atmosphere,and(2)flue gas connections between the ap- in a drying or process application, contact the pliance and vent cap,of a type(s)specified by the manufacturer but supplied by the installer,constructed so that,when installed in accor- factory for application guidelines and dance with the manufacturer's instructions,air for combustion is ob- manufacturer's authorization. Without factory tained from the outside atmosphere and flue gases are discharged to authorization, the warranty is void and the the outside atmosphere." Separated combustion units are designed to separate air for combus- manufacturer disclaims any responsibility for tion and flue products from the environment of the building in which the duct furnace and/or the application. the unit is installed.Separated combustion appliances are recommended for use in dust laden and some corrosive fume environments or in build- ings with negative pressure(up to.15"w.c.).As the definition states, HAZARD INTENSITY LEVELS all separated combustion,power-vented equipment must be equipped with both combustion air and exhaust piping to the outdoors. 1.DANGER:Failure to comply will result in se- t. Installation Codes vere personal injury or death and/or property damage. These units must be installed in accordance with local building codes. In the absence of local codes,in the United States,the unit must be 2. WARNING: Failure to comply could result installed in accordance with the National Fuel Gas Code(latest edi- in severe personal injury or death and/or prop- tion).A Canadian installation must be in accordance with the CAN/ erty damage. CGA B149.1 and B149.2 Installation Code for Gas Burning Appli- ances and Equipment.These codes are available from CSA Informa- 3.CAUTION: Failure to comply could result in tion Services, 1-800-463-6727. Local authorities having jurisdiction minor personal injury and/or property damage. should be consulted before installation is made to verify local codes and installation procedure requirements. Special Installations (Aircraft Hangars/ 2. Warranty y Installations in aircraft hangars should be in accordance with ANSI/ Refer to the limited warranty information on the Warranty Card in the NFPA No.409(latest edition),Standard for Aircraft Hangars;in pub- "Owner's Envelope". lic garages in accordance with ANSI/NFPA No.88A(latest edition), Warranty is void if... Standard for Parking Structures;and for repair garages in accordance with ANSI/NFPA No. 8813 (latest edition), Standard for Repair Ga- a. Separated-combustion heaters are used in atmospheres containing rages.ANSI/NFPA-88(latest edition)specifies overhead heaters must flammable vapors or atmospheres containing chlorinated or halo- be installed at least eight feet above the floor.In Canada,installations genated hydrocarbons or any contaminant(silicone,aluminum ox- in aircraft hangars should be in accordance with the requirements of ide,etc.)that adheres to the spark ignition flame sensing probe. the enforcing authorities,and in public garages in accordance with CAN/ b. Wiring is not in accordance with the diagram furnished with the CGA B149 codes. heater. ANSI/NFPA 409(latest edition)specifies a clearance of ten feet to the c. Unit is installed without proper clearance to combustible materials. bottom of the heater from the highest surface of the top of the wing or d. SCA fan-type heater is connected to a duct system. engine enclosure of whatever aircraft would be the highest to be housed e. SC/HSC duct furnace air throughput is not adjusted to within the in the hangar,and a minimum clearance of eight feet from the floor in range specified on the rating plate. other sections of aircraft hangars,such as the offices,and shops which f. SC/HSC duct furnace is installed in a process or drying application communicate with areas used for servicing or storage.The heaters must without factory authorization. (Any use in a process or drying be located so as to be protected from damage by aircraft or other ob- application voids agency certification.) jects such as cranes and movable scaffolding.In addition,the heaters must be located so as to be accessible for servicing,adjustment,etc. All Installations These gas-fired products are certified by ANSI Z83 family of stan- dards governing the safe usage of heating equipment in the industrial/ commercial marketplace.This includes using the heaters in makeup air applications supplying corridor pressurization in commercial buildings such as office structures and apartment complexes. Form 406, Page 2 f gg d � fisP