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Heater Placement And Clearances; Hanging Appliance On The Wall - Bosch 830 ES Manual

Temperature modulated with electronic ignition suitable for heating potable water and space heating (intended for variable flow applications)
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24 | Installation instructions
NOTICE: Risk of appliance freezing!
▶ The water in this water heater is cold and always
remains cold except for the times the burner is on. In
the event of power outage in conjunction with
freezing temperatures, it is recommended that the
heater be drained.
See chapter 7.2, page 36 "Winterizing" for draining
▶ Flammable materials, gasoline, pressurized
containers, or any other items or articles that are
potential fire hazards must NOT be placed on or
adjacent to the heater. The appliance area must be
kept free of all combustible materials, gasoline and
other flammable vapors and liquids.

Heater placement and clearances

The water heater design is approved for installation on a combustible
wall (see chapter 4.7 Mounting installation) provided the floor covering
below the heater is noncombustible.
For installations in an alcove or closet, maintain the minimum clearances
to combustible and non-combustible materials. See fig. 6, page 9.

Hanging appliance on the wall

WARNING: Severe personal injury and property
Before mounting appliance:
▶ Check that there are no loose or damaged parts inside
the appliance.
▶ Confirm that the gas type of the heater matches the
gas supply you will be connecting the heater, see
Fig.2, page 7.
Front cover should be removed (see instructions on page
8) in order to inspect components visually.
▶ Do not install this appliance on a carpeted wall. The
heater must be mounted on a wall using appropriate
anchoring materials.
NOTICE: Risk of appliance freezing!
▶ In areas where outside temperature is routinely below
32°F (0 °C) and the heater is to be installed on the
inside of an exterior wall, a minimum 2" air gap or rigid
insulation between the heater back and the wall is
If wall is sheathed with plaster or drywall, it is recommended that two
support boards, either 1"x 4" or 1/2" (minimum) plywood first be
attached across a pair of studs, see fig. 29, page 24.
▶ Secure the wall mounting bracket provided with the heater to a wall
surface. The heater must be kept level on the wall surface, see fig. 30,
page 25.
▶ Hang the appliance on the bracket, see fig. 31, page 26.
6 720 644 936 (2013/01)
Fig. 29 Distance between support boards
Studs 16" (406mm) on center
Fig. 30 Leveling wall mounting bracket
830 ES



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