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➊ PRV
➋ Boiler Supply
➌ Supply Connection
for Indirect Tank
➍ Pressure and
Temperature Gauge
➎ Boiler Drain
➏ Supply System /
Di-Electric Union
➐ System Return /
Di-Electric Union
➑ Boiler Return
Concentric pipe with
roof termination
Concentric pipe with hori-
zontal sidewall termination
Twin-pipe with concentric
vertical termination
Twin-pipe with concentric
sidewall termination
Vertical vent and horizontal
air intake
Venting.
Chimney Liner:
Simpson Fas-n-seal
Duravent flex liner
FLEXIBLE VENTING OPTIONS FOR RINNAI
Low-Loss Header
Rinnai Condensing Wall-Mounted
Gas Boilers ensure a simple
installation in any home, and are
ready for direct-vent right out of
the box—through either a wall
or roof penetration. The twin-
pipe adapter included allows
venting with outside air intake.
A comforting combination of
safety and exibility is available
with concentric venting, which
permits outside air intake through
a single wall or roof penetration.
In order to optimize overall performance
and provide durability, every Rinnai boiler
includes a factory-assembled low-loss
header. The easy-to-install low-loss header
eliminates the need for balanced pump
sizing, simplifying system design.
• Reduced installation time compared to
traditional closely-spaced tees with factory-
assembled kit
• Space-saving compact design
• More ecient heat transfer and reduced heat
loss due to fully-insulated header
RINNAI CONDENSING BOILERS ACCESSORIES
23
5
6
7
4
3
1
2
8