Specifications

6 720 646 812
Installation instructions
11
Fig. 8 Concentric vent kit example
3.3.2 Vent specifications
Establish vent clearances that comply with the vent
manufacturer's specifications and all applicable
national/local codes.
Venting specifications
* 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.
Description Length
Kit part no.
and quantity
196016
3- In. Rain Cap N/A 1
4- In. Diameter SDR-26
Pipe
24 In. long 1
3- In. Y
Concentric Fitting
N/A 1
2- ½ In. Diameter SDR-
26 Pipe
37-1/8 in.
long
1
3- In. Condensate drain
Tee
N/A 1
1.5- In. Condensate drain
bushing
N/A 1
Table 3 Concentric vent part breakdown
6720608836-27.2V
3 (76mm)"
3 (76mm)"
INTAKE
EXHAUST
COMBUSTION
AIR
MAINTAIN 12 IN. (18 IN. FOR CANADA)
MINIMUM CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24 IN. ABOVE ROOF.
EXHAUST
ROOF BOOT/
FLASHING (FIELD
SUPPLIED
DRAIN TEE
(196278)
CONCENTRIC
VENT KIT
(196016)
Diam. Aproved terminals
E
x
h
a
u
s
t
3 or 4 inches
“T” terminal
90° elbow
PVC Flue Cap*
(ECAP321)
Vertical terminations only
3" diameter only
Concentric
(196016)
I
n
t
a
k
e
3 or 4 inches
“T” terminal
90° elbow
PVC Flue Cap*
(ECAP321)
Vertical & horizontal terminations approved
3" diameter only
Concentric
(196016)
Table 4 Venting specifications for intake and exhaust