Bosch C 950 Installation And Operation Instruction Manual page 26

Installation instructions
Fig. 14 Horizontal venting installation (combustion air
piping not shown)
[1] Termination
[2] Minimum above ground or normally expected snow
accumulation level
[3] Appliance
[4] Elbow (note: minimum 1ft of straight vent pipe required)
[5] Horizontal run ¼" per foot down to termination
WARNING:
▶ Single pipe penetration should be used in non-freezing
climates only and steps must be taken to ensure that
adequate combustion air is available to the water heater at
all times!
26
Fig. 15 Horizontal venting system (concentric vent)
[1] Exhaust
[2] Combustion air
[3] Exhaust pipe
[4] Drain tee (when required)
[5] Intake pipe
[LA] Minimum 1"
NOTICE:
▶ The air intake connection on the concentric termination can
be oriented in any possible direction.
C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)