Bosch Therm C 1210 ES Installation And Operating Instructions Manual page 28
Indoor residential and commercial models
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Also See for Therm C 1210 ES:
- Applications manual (40 pages) ,
- Technical service bulletin (2 pages) ,
- Installation manual (72 pages)
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Installation instructions
Note: The following solution is available only for 3"
diameter venting.
Fig. 22
Part nr 9301BFP
Installation
For this solution to be effective, the internal flapper must be
100% closed when the water heater is not running. Refer to
figures 24 and 25 for preferred installation positions in the
vent system.
Installation considerations:
•
Install damper per the supplied manufacturer's
instructions.
•
The damper is only to be used in the exhaust vent piping.
•
Ensure directional arrow on damper label faces in the same
direction as exhaust flow.
•
If installed horizontally, the axis must be horizontal or
slightly pitched up towards termination to ensure damper
closes 100% when heater is not running.
•
To allow accessibility, damper must not be installed in an
enclosed section of vent pipe.
•
Do not install damper in unconditioned spaces (e.g. attics)
Condensation can build up while the heater is running
which can later freeze and potentially block the flapper.
Fig. 23
Blackflow reducer (9301BFP) installed
28
6720608643-18.1V
Fig. 24
[1] Good
[2] Better
[3] Best
6720608643-19.1V
Fig. 25
[1] Good
[2] Better
[3] Best
[4] Enclosed vent pipe (Do not install damper)
[5] Unconditioned space (Do not install damper)
[6] Preferred damper position for vertical terminations
C 1210ES/ESC – 6 720 644 887 (2022/04)
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