FTV I&O Manual │Lighting the Boiler297.0 INSTALLING GAS PIPINGFTV boilers are factory set to operate with Natural Gas; BEFORE OPERATINGWITH PROPANE, the boiler must be converted using the appropriate Natural to LPConversion Kit; see Table 7-1. Failure to properly convert the unit to safely operate withPropane will cause dangerous burner operation, resulting in property damage, seriousinjury or death.Liquefied Petroleum (LP) propane gas is heavier than air. Do not install the boiler in a pitor similar location that will permit heavier than air gas to collect. Check with LocalCodes as they may require boilers fueled with LP gas to be provided with an approvedmeans of removing unburned gases from the room. Failure to follow these instructionsmay result in serious injury or death.Table 7-1 Natural Gas to LP Conversion KitModel Kit Number LP-Venturi Insert (part no.)FTV110 & FTV110C 85995-1 85989FTV150 & FTV150C 85446-1 85536FTV190 & FTV190C 85934-1 85812Note:FTV models are converted to Propane using a replacement LP-Venturi Insert, notby installing an orifice. Follow the Natural Gas to LP Conversion Instructionsprovided with the Kit.InstallationRefer to the current National Fuel Gas Code ANSI Z223.1/NFPA 54 or CAN/CGA B149.1 installation codes,and local codes for gas piping requirements and sizing. Pipe size running to the unit depends on: Length of pipe. Number of fittings. Type of gas. Maximum input requirement of all gas boilers in the residence.Ensure that: The gas line connection to the boiler does not apply any weight to the gas valve. NTI recommends usingapproved flexible gas piping (if acceptable by local codes) to connect the boiler to the gas supply (see Figure7-1 for details). You plan the installation so the piping does not interfere with the vent pipe, or the removal of the valve,burner, and serviceable components. The Boiler is installed such that the gas ignition system components are protected from water (dripping,spraying, rain etc.) during installation and servicing. The gas piping is large enough for all the gas appliances in the home. No appreciable drop in line pressureshould occur when any unit (or combination of units) lights or runs. Use common gas-line sizing practices. Always use a pipe-threading compound that is resistant to Propane (LP) gas solvent action. Apply sparinglyto all male threads, starting at two threads from the end. Over doping or applying dope to the female end,can result in a blocked gas line. DO NOT TIGHTEN FITTINGS WITHOUT SUPPORTING THE INTERNAL GAS LINE CONNECTIONWITHIN THE BOILER as damage to the boiler’s internal gas carrying components could occur. Install a manual “Equipment Shut-Off Valve” as shown in Figure 7-1. Valve must be listed by a nationallyrecognized testing laboratory. The gas line piping can safely be removed from the boiler for servicing, by strategically placing the gas lineshutoff and union; see example in Figure 7-1. All gas piping, including gas components in the boiler, are checked for leaks using a “Bubble Test”, prior tooperating the boiler.Strain on the gas valve and fittings may result in vibration, premature component failureand leakage and may result in a fire, explosion, property damage, serious injury or death.Do not use an open flame to test for gas leaks. Failure to follow these instructions mayresult in fire, property damage, serious injury or death.