Installation manual

13 Rinnai CVent
Vercal Terminaon
Maximum Equivalent Vent Length
Number of water
heaters
Minimum Equivalent Vent Length Maximum Equivalent Vent Length
Exhaust* Intake* Exhaust* Intake*
1 to 7 5  15  100  100 
8 5  15  41  41 
In the table below you nd the maximum equivalent pipe
length of the exhaust and intake venng.
When determining equivalent exhaust and intake vent
lengths add:
• 6 feet for each 90° elbow
• 3 feet for each 45° elbow
There should be a minimum of 36 inches between
exhaust terminaons in mulple common vent
installaons.
CVent Terminaon Clearances
• Add any vent extension lengths which are
added within the header due to increased
spacing of the water heaters
• Header kits have already been counted and
do not need to be added.
Clearances of Brackets
All supports such as wall brackets on the
external façade or spacer blocks in a
shaft must be assembled in a maximum
distance of 78 in (2 m). Where there is a
bend, additional spacer blocks or wall
brackets can be planned before and after
the bend, depending on the local
situation.
Freestanding Components
Components, which are assembled
freestanding vertical (roof termination)
with a length of more than 59 in (1.5 m),
must, depending on the amount of wind
and snow level expected, be additionally
secured to the building with guys or
braces.
*Approved exhaust and intake diameter is 8 inches.
12” OVER MAX.
SNOW LEVEL OR
24” WHICHEVER
IS GREATER
INTAKE - PVC
EXHAUST - CVent
36” MINIMUM INSIDE
EDGE TO INSIDE EDGE