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Installation Clearances - Bosch 660 EF User Manual

Indoor model/ natural gas/lp gas boilers
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Installation instructions
Caution:
Make sure that the location allows
installation of the exhaust vent as
specified.
State of California:
i
The water heater must be braced, an-
chored or strapped to avoid moving dur-
ing an earthquake. Contact local utilities
for code requirements in your area or call:
1-866-330-2730 and request instruc-
tions.
The Commonwealth of Massachusetts:
i
1) The outdoor units (EFO) can only be
used if they are for summer use only.
2)The water heater can be used for hot
water only and not in a combination of do-
mestic and space heating.
For Venting Manufacturers Requirements, see websites
or phone numbers listed below:
Bosch Vent System
3.6

Installation Clearances

Warning: Before installing, check for
the following:
Install in accordance with relevant
building and mechanical codes, as well
as any local, state or national regula-
tions, or in the absence of local and
state codes, to the National Fuel Gas
Code ANSIZ223.1/NFPA 54 – latest
edition. In Canada, see NSCNGPIC for
detailed requirements.
For 660 EF
Required Clearances From Heater
• Maintain the following clearance from both combus-
tible and non-combustible materials.
12" (300 mm) or more
2" (50mm) or more
Fig. 14
18
www.boschpro.com
4" (100mm) or more
Cooking Equipment
If the unit will be installed in the vicinity of a perma-
nent kitchen range or stove that has the possibility of
generating steam that contains fats or oils, use a
dividing plate or other measure to ensure that the unit
is not exposed to air containing such impurities
• The dividing plate should be of noncombustible
material of a width greater than the water heater.
Exhaust hood
Dividing plate
Range
Fig. 15
Securing of space for repair/inspection
• If possible, leave 8" (200mm) or more on either side
of the unit to facilitate inspection.
• If possible, leave 24" (600mm) or more in front of the
unit to facilitate maintenance and service if neces-
sary.
• If possible, leave 3" (75mm) or more above and
below the vent pipe to facilitate inspection and repair
if necessary.
Fig. 16
Water
heater
6 720 644 063

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