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DEMAND DUO
®
RSERIES SPECIFICATIONS | NONCONDENSING MODELS
Demand Duo
®
100 GAL Demand Duo
®
80 GAL
Model CHS199100R CHS19980R
Part Number
CHS199100RiN / CHS199100RiP CHS19980RiN / CHS19980RiP
Dimensions - w x h x d
Inches (mm)
32.9 x 71.3 x 38.1
(835.6 x 1811 x 967.7)
27.8 x 64.7 x 34.1
(706.1 x 1643.4 x 866.1
)
Product Weight (lbs/kg)
455 / 208 320 / 145
Installation Type
Indoor Indoor
Storage Tank
119 / 450 80 / 303
Min/Max Input (1,000 Btu/h)
22 / 199 22 / 199
Thermal Eciency (TE)*
80% 80%
Temperature Range
120°–180°F / 49°–82°C 120°–180°F / 49°–82°C
First Hour Delivery
@ 100 °F T* (gph/lph)
276 / 1045 249 / 942
Recovery @ 100 °F T (gph/lph)
193 / 730 193 / 730
Cost-Saving Reliability
That Installs Easily.
After
Tankless 1st-hour: 276 gph
Before
When you need a quick, simple replacement for
a traditional atmospheric tank, Rinnai’s Demand
Duo R-Series Commercial Hybrid Water Heating
System produces consistent, reliable hot water in
a cost-saving package.
• Vents into existing 6" B-Vent
• Eliminates new vent runs
• Cuts cost of additional venting material
• No new ceiling, roof or wall penetrations
• Easy to install, lighter than tanks
Info at a Glance
• Warranty: heat exchanger –5 years; tank –
6 years; parts – 5 years; labor – 1 year
• High altitude approved to 5,400 ft.
• Certification System: AHRI, ANSI, CSA
• Wi-Fi capable
TROUBLE FREE
FACTORY
INSTALLED
GAS DIRT LEG
˚GAS LINE
ROTATION
SAVE MONEY 
INSTALLS INTO
” BVENT
SAVE TIME  FACTORY
INSTALLED ELECTRICAL
& GAS COMPONENTS
*
Rating not certified by AHRI.
Learn more at rinnai.us
17
DEMAND DUO®
RSERIES