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Rinnai RUCS75i series User Manual

Rinnai RUCS75i series
132 pages
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Direct Vent Tankless Water Heater
Installaon and Operaon Manual










WARNING

This manual provides informaon on the installaon, operaon, and maintenance of the water heater. For proper
operaon and , it is important to follow the instrucons and adhere to the safety precauons.
A licensed professional must install the water heater according to the exact instrucons in this manual.
The consumer must read the enre manual to properly operate the water heater and to have regular maintenance
performed.

FOR INDOOR APPLICATIONS ONLY
RUCS65i ................ --
RUCS75i ................ --
FOR OUTDOOR APPLICATIONS ONLY
RUS65e ................. --
RUS75e ................. --



C US
U328-0700

Table of Contents

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Rinnai RUCS75i series Specifications

General IconGeneral
CategoryWater Heater
SeriesRUCS75i
TypeTankless
Fuel TypeNatural Gas
Flow Rate7.5 GPM
Energy Factor (EF)0.82
Gas Connection3/4" NPT
Water Connection3/4" NPT
LocationIndoor
Minimum BTU Input15, 000 BTU/hr
Activation Flow Rate0.4 GPM
Thermal Efficiency0.95
Temperature Range98°F - 140°F
Electrical Requirements120V, 60Hz
VentingDirect Vent
Ignition TypeElectronic Ignition
Warranty12 years heat exchanger, 5 years parts, 1 year labor

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