Bosch Therm C 1210 ES Installation And Operating Instructions Manual page 17

Fig. 8 Concentric vent kit example
[1] Exhaust
[2] Combustion air
[3] Roof boot/flashing (field supplied)
[4] Exhaust pipe
[5] Drain tee 196061, included in concentric vent kits
[6] Intake pipe
[7] Concentric vent kit (196016)
[8] Maintain 12 in. (18 in. for Canada) minimum clearance
above highest anticipated snow level maximum of 24 in.
above roof
4.3.2 Vent specifications
An improperly sized venting system may lead to undesired
effects such as the formation of condensate, gas leakage or
spillage.
Establish vent clearances that comply with the vent
manufacturer's specifications and all applicable national/local
codes.
C 1210ES/ESC – 6 720 644 887 (2022/04)
Venting specifications
Diam. Approved terminals
E 3 or 4
x inches
h
PVC Flue Cap*(ECAP321)Vertical terminations
a
u
s
t
I 3 or 4
n inches
t
PVC Flue Cap*(ECAP321)Vertical & horizontal
a
terminations approved 3" diameter only
k
e
Table 7 Venting specifications for intake and exhaust
[1] ULC S636-95, UL1738 certified
Vent termination
The vent for this appliance shall not terminate:
• over public walkways; or
• near soffit vents or crawl space vents or other areas where
condensate or vapor could create a nuisance or hazard or
cause property damage; or
• where condensate vapor could cause damage or could be
detrimental to the operation of regulators, relief valves, or
other equipment.
Condensate drain requirements
When the Water Heater is installed in a residential single family
dwelling without direct recirculation an external condensate
drain is not required.
If the Water Heater is installed in an application other than a
residential single family dwelling an external condensate drain
(not supplied with the Water Heater) is required in the following
circumstances:
• Vertical terminating exhaust vent installations.
• Horizontal terminating exhaust vent installations greater
than 6 feet (1.8 m) linear measurement, (NOT total
equivalent length).
• Vent installations where any section of the exhaust vent
pipe passes through an unconditioned space.
Note: An external condensate drain is recommended in all
installations as best practice in order to maximize the longevity
of the Water Heater.
Installation instructions
"T" terminal
90° elbow
only 3" diameter only
Concentric (196016)
"T" terminal
90° elbow
Concentric (196016)
17