Bosch 520-HN-N User Instructions page 10

Flow modulated with hydro-generated ignition suitable for heating potable water only - not approved for space heating purposes (intended for variable flow applications with steady cold water inlet temperatures)
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Installation instructions
Mounting heater.
Warning:
B Do not install this appliance on a
carpeted wall.
The heater must be mounted on a wall using
appropriate anchoring materials. If wall is a stud wall
sheathed with plasterboard, it is recommended that
support board(s), either 1x4's or 1/2" (minimum)
plywood first be attached across a pair of studs and
then the heater should be attached to the support
boards. See Fig. 11.
B Install the two included L shaped hooks to wall studs
or support board 13 ¼" apart (See Fig. 11).
B Hang heater on two L shaped hooks (See Fig. 12).
Fig. 10 Remove front cover
Fig. 11 Support board
10
Fig. 12 Secure heater to wall
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520-hn-l

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