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Heater Placement And Clearances; Hanging Appliance On The Wall - Bosch Greentherm T9900 SE 160 Installation And Operating Instructions Manual

Indoor residential tankless water heaters, 160 000/199 000 btu- natural gas 160 000/199 000 btu - liquefied petroleum lp gas
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WARNING:
▶ 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.
4.4

Heater placement and clearances

The water heater design is approved for installation on a
combustible wall (see chapter 4.5 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 16.
4.5

Hanging appliance on the wall

WARNING:
Severe personal injury and property damage!
Before mounting appliance:
▶ Check that there are no loose or damaged parts inside the
appliance.
▶ Set the heater gas type according to the gas supplied to the
unit.
Front cover should be removed (see instructions on page 12) in
order to inspect components visually.
WARNING:
▶ Do not install this appliance on a carpeted wall. The heater
must be mounted on a wall using appropriate anchoring
materials.
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
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, provide a minimum 2" air gap or rigid
insulation between the heater back and the wall.
If the 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. 7.
▶ 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. 8, page 18.
▶ Hang the appliance on the bracket, see fig. 9, page 18.
Fig. 7
Distance between support boards
[1] Support boards
Vertical studs are typically 16" (406mm) on center.
Installation instructions
17

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Greentherm t9900 se 199Greentherm t9900 se/i 199