Installation instructions | 21
6 720 805 440 (2014/11)Greentherm
4.3.7 Common venting of 2 to 4 units
2 to 4 unit cascades can be common vented using the optional PP
common venting system. The water heaters can be installed in a back to
back configuration as shown in fig. 27, or side by side as shown in fig.
28.
The systems are custom configurable for vent lengths from 40” (1m) up
to 100’ (30m) and either a vertical or horizontal termination (see fig.
26).
The following configurations are available:
Where no empty wall space is available a powder coated steel racking
system is also available for water heaters in side by side or back to back
configurations. See the respective product brochure for details.
Fig. 26 Common venting for 2 to 4 water heaters available with vertical
or horizontal termination
Fig. 27 Back to back configuration
Fig. 28 Side by side configuration
For available parts and configurations see the Greentherm Common
Vent Bulletin available on www.bosch-climate.us.
Units Configurations
2 Back to Back
4 Back to Back - see fig. 27
2 Side by Side - see fig. 26
3Side by Side
4 Side by Side - see fig. 28
Table 26
NOTICE: Drawings 26 to 28 depict the conceptual
configurations available.
▶ For installation details and requirements consult the
respective common vent installation instructions
listed below.
Content Document number Part number
Side by side basic kit 6 720 804 523 7 736 501 100
Side by side extension kit 6 720 804 524 7 736 501 254
Back to back basic kit 6 720 804 520 7 736 501 253
Back to back extension kit 6 720 804 522 7 736 501 252
Table 27
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