Fig. 7 Side view
For servicing access, a 2ft clearance is recommended to
the front cover.
Table 4 Minimum clearances
The following specialized tools may be required for installation:
• Combustion Gas Analyzer
Please follow these instructions. Failure to follow instructions may
▶ Damage or injury.
▶ Improper operation.
▶ Loss of warranty.
C 1210 ES/ESC
Model C 1210 ES/ESC
▶ The water heater must be installed by a qualified
installer in accordance with these instructions. If
improperly installed, a hazardous condition such as
explosion or carbon monoxide poisoning could result.
Bosch Thermotechnology Corp. is not responsible for
improperly installed appliances.
Common installation practice is to first determine the
venting/combustion air point of termination, then
design the piping layout back to the heater.
▶ Do not reduce the exhaust or combustion air vent pipe
▶ Do not common vent with any other vented appliance
▶ Do not use Type-B vent as the actual exhaust vent
system for the appliance.
▶ Failure to vent the exhaust gases to the outside (see
table 3 for proper material) may result in dangerous
flue gases filling the structure in which it is installed.
▶ In areas where outside temperatures routinely come
close to freezing, sealed combustion operation is
required. Concentric termination or separate
terminations for combustion and vent, must be
installed on the same wall or roof surface; however,
never facing the direction of prevailing winds. Failure
to do so may result in heat exchanger freezing and
bursting. This failure is not covered under the
▶ Protect the exhaust and inlet from leaves and debris
by installing a screen on the end of the termination. ¼
" mesh minimum opening recommended on screen.
Installation instructions | 11
6 720 644 887 (2013/02)