Product Overview

CONDENSING GAS BOILER
08/2019
©2019 Rinnai America Corporation. All Rights Reserved. Rinnai America Corporation continually
updates materials, and as such, content is subject to change without notice. Local, state, provincial,
federal and national fuel gas codes must be adhered to prior to and upon installation.
Look Inside
R-TR-HT-E-12
I-SERIES
Concentric Vent or
2-Inch Exhaust
(2 in. / 4 in. or 3 in. / 5 in.
Direct Vent or Exhaust in
2-Pipe Configurations)
2-Inch Intake
Vent
Connection
Used for Room-
Air Configurations
(2- in. PVC/CPVC/
PP on vent runs
up to 65 feet)
Turbo Fan
Gas Orifice
(Quick Gas
Conversion)
Switching Venturi
Flat Plate
Secondary
Heat
Exchanger
Servo-Based
Temperature
Controller
for Domestic Hot
Water (DHW)
Integrated
Bypass Line
Integrated
Condensate
Trap
Stainless Steel
Flat Plate
Domestic Hot Water
Heat Exchanger
Modulating
Stainless Steel
Mesh Burner
Both components
work together to
deliver precise
DHW temperature
control (no mixing
valve required)
Integrated Flue
Check Valve
* Combi model shown.
** Adhere to local, state, provincial, federal and national codes.
Zero Governor
Gas Valve
No combustion
analysis testing
requried during
commissioning of
unit**
Proportional Valve
Delivers Domestic Hot
Water (DHW) and
Central Heating (CH)
Simultaneously
Without Interruption
Integrated Pump
Primary Stainless
Steel Heat
Exchanger
Brazed joints reduce
thermal stress on the
Heat Exchanger