Installation using the Recess Box (7 736 500
Heater placement and clearances
▶ The water heater with recess box accessory is
intended for an outdoor installation only.
The water heater is approved for installation on a combustible wall (see
chapter 5.4 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 chapter 3.5, page 10.
Do not install the Recess box:
• Under a deck or patio.
• Side of the building with prevailing winter winds.
• Close to plants or trees.
• In areas where people or animals can accidentally touch louvered
• Maintain a clean area in front of the appliance of 4 feet (1,2m).
The Recess box should be installed so the discharge vent maintains the
minimum allowable clearances as required by the local authority. Where
no local requirement exists, maintain the following minimum suggested
clearances from builing openings as shown in fig. 16.
Fig. 16 Discharge vent clearances
Top, front, and side clearances noted on the front
cover of the water heater are not applicable when
installed in a Recess box.
WARNING: Improper installation!
▶ This recess box has been designed to be mounted in
a wall cavity with exhaust vent discharging to the
outdoors. Do not install the recess box in another
configuration. Damages resulting from an improper
installation will not be covered by Bosch limited
Installation using the Recess Box (7 736 500 043) | 15
Dimensions of Recess Box
When building the wall cavity for the recess box, make preparations for
the water and gas lines and electrical wires as well.
Fig. 17 Recess box dimensions in inches (mm)
Fig. 18 Recess box plumbing/electrical openings
Hot water opening
Pressure relief valve opening
Cold water opening
▶ Secure the wall mounting bracket provided with the heater to the wall
surface. The heater must be kept level on the wall surface, see fig.
25, page 20.
1) Not used with this appliance.
6 720 644 956 (2016/05)