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These fireplaces are designed as supplemental heaters. Therefore, it is advisable to have an alternate primary heat source when installed in a dwelling. These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance. Millivolt Models - The millivolt appliances are manually controlled and feature a spark igniter (piezo) that allows the appliance's pilot gas to be lit without the use of matches or batteries. This system provides continued service in the event of a power outage. Millivolt models come standard with amanuallymodulated gas valve; flame appearance and heat output can be controlled at the gas valve. The BTU Input for these appliances is shown in Table 1. Input (BTU) Manually-Modulated Gas Valves (millivolt models) Models Fuel Type Input Rate (BTU / HR) SSDVST SSDVPF Natural or Propane Gas 37,500 high 30,000 low Table 1 Electronic Models - Theseelectronicappliancesfeatureanelectronic intermittent pilot ignition system. External electrical power is required to operate these units. These electronic models have a fixed rate gas valve. The BTU input for the electronic models is shown in Table 2. Input (BTU) - Fixed Rate (electronic models) Models Fuel Type Input Rate (BTU / HR) SSDVST SSDVPF Natural or Propane Gas 37,500 Table 2 Gas Pressure - All Models Gas Pressure - All Models Inlet Gas Supply Pressure (all models) Fuel # Minimum Maximum Natural Gas 5.0" WC (1.24 kPa) 10.5" WC (2.61 kPa) Propane 11.0" WC (2.74 kPa) 13.0" WC (3.23 kPa) Table 3 Manifold Gas Supply Pressure (all models) Fuel # Low (millivolt only) High Natural Gas (Lo) 2.2" WC (.55 kPa) (Hi) 3.5" WC (.87 kPa) Propane (Lo) 6.3" WC (1.57 kPa) (Hi) 10.0" WC (2.49 kPa) Table 4 Test gauge connections are provided on the front of the millivolt gas control valve, identified IN for the inlet and OUT for the manifold side. A 1/8" NPT Test gauge connection is provided at the inlet and outlet side of the electronic gas control valve. These appliances must be isolated from the gas supply piping system (by closing their individual manual shut-off valve) during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa). Theseappliancesandtheirindividualshut-off valves must be disconnected from the gas supply piping system during any pressure testing of that system at pressures greater than 1/2 psig (3.5 kPa). These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance. Orifice Sizes -Sea Level to High Altitude (All Models) These appliances are tested and approved for installation at elevations of 0-4500 feet (0-1372 meters) above sea level using the standard burner orifice sizes (marked with an "*" in Table 5). For elevations above 4500 feet, contact your gas supplier or qualified service technician. Deration -At higher elevations, the amount of BTU fuel value delivered must be reduced by either: • Using gas that has been derated by the gas company. • Changing the burner orifice to a smaller size as regulated by the local authorities having jurisdiction and by the (USA) National Fuel Gas Code NFPA 54/ANSI Z223.1 -latest edition or, in Canada, the CAN/CSA-B149.1 codes - latest edition. Installtheapplianceaccordingtotheregulations of the local authorities having jurisdiction and, in the USA, the National Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest edition or, in Canada, the CAN/CSA-B149.1 - latest edition. NOTE: Flame appearance will diminish 4% per thousand feet. NOTE: Each model has two burners and 2 Orifices. Burner Orifice Sizes Elevation 0-4500 feet ( 0-1372 meters) Model Nat.Gas Propane Series drill size (inches) drill size (inches) #44 (.086") * #55 (.052")** SSDVST 60J80 • 19L52 • SSDVPF * Standard size installed at factory ** Standard size in LP conversion kit Table 5 • Part /Cat. Number Gas Valve Diagrams -See Figure 1 forMillivolt models and Figure 2 For Electronic Models. HI/LO Variable Inlet Pressure Tap HILOWHTPTHTPTPILOTPILOTONitOFFINOUTFlame Height Adjustment Manifold Pressure Tap Main Gas Control Knob Pilot Adjustment OFF/PILOT/ON Screw Figure 1 -SIT Millivolt Gas Valve NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. ON / OFF Switch Manifold Pressure FFONIPSINOLORTNOCGINTIERPort Inlet Pressure Port Electronic Gas Control Valve Figure 2 -Honeywell Electronic Gas Valve REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS These fireplaces are approved for installation in the US state of Massachusetts if the following additional requirements are met: • Install this appliance in accordance with Massachusetts Rules and Regulations 248 C.M.R. • Installation and repair must be done by a plumber or gas fitter licensed in the Commonwealth of Massachusetts. • The flexible gas line connector used shall not exceed 36 inches (92 centimeters) in length. • The individual manual shut-off must be a T-handle type valve. Massachusetts Horizontal Vent Requirements In the Commonwealth of Massachusetts, horizontal ...

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