RBI Futera XLF Installation And Operation Instructions Manual

Also see for FUTERA XLF Series: Manual Control manual Manual Installation and operation instructions

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Finned copper tube gas boilers & water heaters – Boiler Manual8Vertical direct vent systems — Figure 3If any part of a single wall metal vent system passes through anunheated space, it must be insulated with insulation rated for 400oF,204oC. Structural penetrations must be made using approved fire-stops.An approved, nonrestrictive vent terminal must be used. The top of avertical vent system must extend at least 5.5 ft, 1.7 m above the roofsurface and maximum snow line that it passes through, 4 ft, 1.2 mabove the intake air terminal, see Figure 3.In addition the vent system must conform to the dimensions shownin Figure 3. The penetration point in the roof must be properlyflashed and sealed.The vent system must be gas tight. All seams and joints in metalpipes must be joined and sealed in accordance with the vent systemmanufacturer’s instructions.Combination direct vent systems — Figure 4The boiler/water heater can be vented vertically with the intake airpiped horizontally through an outside wall. Follow the instructionsin the Intake Air Option — Horizontal Guidelines. Also follow thegeneral instructions in the “Combustion Air & Ventilation” and“General Venting Guidelines” sections.Figure 1 VENT OPTION 1: DIRECT VENT — Horizontal air intake and venting for a single direct vent system (CATEGORY IV)10 3.1W hen running horizontal combustionair and venting for single or multiple units,exhaust and combustion air terminals mustbe installed on the same plane (outside wall)in order to prevent pressure differences dueto prevailing winds. In cold climates, double-wall or insulated inlet pipe is recommended toprevent condensation.