Bosch 940 ESO Manual

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14 | Installation using Outdoor Kit (BTOK)940 ESO6 720 644 956 (2016/05)5.3 Selecting heater locationBefore proceeding, read the water heater installation manual. If theinformation in that manual is not followed exactly, a fire, explosion orpoisoning by carbon monoxide may result causing property damage,personal injury or death.▶ Choose an outside wall for the installation. Installation on a wallprotected by an overhang above is recommended.▶ Size the water and gas connections according to the instructions inthe water heater installation manual. Use unions when connectingboth water lines and gas supply line to the heater.Minimum clearancesIf the appliance is installed under an overhang, there must be a 36"clearance from the top of the appliance and the mounting area must beopen in front and on the sides of the appliance.Fig. 135.4 Mounting instructions▶ The water heater is approved for installation directly on an outsidewall. Secure the wall mounting bracket provided with the waterheater to a wall surface. See fig. 14.▶ The installation method of the mounting bracket will depend on thetype of mounting surface. Due to the varieties of building siding orsurfacing, the installer must decide on how best to support and levelthe heater on an outside wall. It is recommended that horizontal orvertical support boards or plywood sheathing (1/2" minimum) firstbe attached to the wall surface. The heater must also be kept level onthe wall surface.Fig. 14 Installation on wood sidingFig. 15 Installation on vinylRef. Description Min. distancesA Directly below or adjacent to an opening;operable windows, doors and any fresh airopenings 1 ftBCD From any adjacent wall  1 ftE Below a gutter, sanitary pipework, eaves oroverhang 3 ftF Above ground  1 ftG From a gas meter or gas regulator  3 ftTable 4Best practice note: The clearances in fig. 13 and table 4are the minimum allowed by the standard. Whenpossible consider maximizing the clearances A, B, C, Dand E to allow for the effects of wind and frequently useddoor and window openings.6720645551-10.1VDABGECFWARNING:▶ Do not mount heater directly to vinyl siding. Withvinyl siding, a 3½ ' x 4' area of the siding must first beremoved and then replaced with wood or other non-plastic material. See fig. 15.Plywood (½" minimum)or other solid woodmaterial(s) to anchor thewall support bracket andkeep the heater levelagainst wall surfaceWoodsidingPlywood (½" minimum)or other solid woodmaterial(s) to anchor thewall support bracket andkeep the heater levelagainst wall surfaceWoodsiding