Bosch C 950 Installation And Operation Instruction Manual page 25

4.3.3 Vent configuration examples for PP, PVC, CPVC, or
ABS systems
Below are approved examples of vertical and horizontal venting
installations.
Fig. 12 PP concentric kit venting
NOTICE:
Using a single pipe vent in cold climates puts the water
heater at risk of freezing, as negative air pressure is
common in buildings during cold weather. This situation
will pull cold air through the heat exchanger and can lead to
damage and a water leak. Freeze damage to the water
heater is not covered under warranty.
C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
Fig. 13 Vertical venting system (single pipe penetration)
[1] Drain tee (when required)
[2] Intake
[3] Exhaust
[LA] Maintain 12 in. (18 in. for Canada) minimum clearance
above highest anticipated snow level maximum of 24 in.
above roof.
Installation instructions
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