Bosch C 950 ES Installation Manual page 11

Description
3- In. Rain Cap
4- In. Diameter SDR-26
Pipe
3- In. Y
Concentric Fitting
2- ½ In. Diameter SDR-
26 Pipe
3- In. Condensate drain
Tee
1.5- In. Condensate drain
bushing
Table 3 Concentric vent part breakdown
MAINTAIN 12 IN. (18 IN. FOR CANADA)
MINIMUM CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24 IN. ABOVE ROOF.
CONCENTRIC
VENT KIT
(196016)
INTAKE
3 (76mm) "
3 (76mm)
Fig. 8 Concentric vent kit example
3.3.2 Vent specifications
Establish vent clearances that comply with the vent
manufacturer's specifications
national/local codes.
6 720 646 812
Kit part no.
Length and quantity
196016
N/A 1
24 In. long 1
N/A 1
37-1/8 in.
1
long
N/A 1
N/A 1
EXHAUST
COMBUSTION
AIR
ROOF BOOT/
FLASHING (FIELD
SUPPLIED
EXHAUST
"
DRAIN TEE
(196278)
6720608836-27.2V
and all applicable
Venting specifications
Diam.
E
x
h
a 3 or 4 inches
u
s
t
I
n
t
3 or 4 inches
a
Vertical & horizontal terminations approved
k
e
Table 4 Venting specifications for intake and exhaust
* ULC S636-95, UL1738 certified
Condensate drain requirements
An external condensate drain (not supplied with the
heater) must be installed under the following
conditions:
• All vertical terminating vent installations.
• Horizontal terminating vent installations where the
total linear vent length is greater than 6 feet (1.8 m).
• Vent installations where any section of the exhaust
vent pipe passes through an unconditioned space.
Minimum combustion air and exhaust pipe
length
The minimum exhaust pipe length is 1 foot (0.3m) of
straight vent pipe. The minimum combustion air pipe
length is one 90° elbow.
Installation instructions
Aproved terminals
"T" terminal
90° elbow
PVC Flue Cap*
(ECAP321)
Vertical terminations only
3" diameter only
Concentric
(196016)
"T" terminal
90° elbow
PVC Flue Cap*
(ECAP321)
3" diameter only
Concentric
(196016)
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