Bosch GWH C 800 ES Installation Instructions Manual page 22

Installation instructions
Warning: A proper end terminal with
rain cap and protection from leaves and
debris must be used. Failure to do so
may result in damage to the appliance.
This failure is not covered under the
manufacturer's warranty.
Caution: The vent system must be
installed by a qualified installer in
accordance with these instructions. If
improperly installed,
condition such as explosion or carbon
monoxide poisoning
Bosch Water
responsible for improperly installed
venting systems.
Establish vent clearances that comply with the vent
manufacturer's specifications. In all cases follow local
codes.
The appliance should be located as close to the point
of vent termination as possible. The maximum vent
length is 26 feet (8 m) with one 90 degree elbow and
allowed end terminal. Subtract 5 feet from the total vent
length for each additional 90° elbow used (a maximum
of three 90° elbows are permitted in the total vent
length), or subtract 3 feet for every 45° elbow used.
Horizontal sections of vent must pitch upwards towards
termination ¼" for every foot of horizontal length, to
prevent the pooling of condensate, and be supported at
4 foot intervals with overhead hangers.
Warning: Type-B vent must never be
used as the actual exhaust vent system
for the appliance, as it is not gas tight.
This will create a serious health hazard
and void the warranty.
22
a hazardous
could result.
Heating is not
Minimum exhaust vent size and length
The minimum exhaust vent
length is 3 feet (1 m) with one
90 degree elbow.
Fig. 33
6 720 608 643