Rinnai Circ-Logic RU98i User Manual

100000284 Rev D 1 Rinnai Circ-Logic™ with Grundfos Kit
Descripon
Rinnai Circ-Logic™ oers homeowners
enhanced convenience and energy
eciency in home hot water recirculaon
systems with a dedicated return line. Circ-
Logic™ controls the on/o sequence and
operaonal cycles of the recirculaon pump
through the programming of the tankless
water heater's control board. This feature is
standard on Rinnai's Ultra and Luxury Series
units.
Circ-Logic™ has been designed to provide
homeowners with the ability to customize
their recirculaon systems based on such
key variables as length of recirculaon loop,
piping insulaon, and the homeowner's
comfort and eciency preferences.
The GTK15 kit, manufactured by Grundfos,
allows the user to enjoy further energy
savings through the use of a mer.
For specic informaon on warranty with
circulaon, please visit
hp://www.rinnai.us/warranty
Rinnai Circ-Logic™
With Grundfos GTK15 Kit

Rinnai Circ-Logic RU98i Specifications

General

Category	Tankless Water Heater
Model	RU98i
Gas Type	Natural Gas or Propane
Energy Factor	0.95
Maximum Flow Rate	9.8 GPM
Minimum Flow Rate	0.26 GPM
Activation Flow Rate	0.4 GPM
Circ-Logic	Yes
Heat Exchanger	Stainless Steel
Maximum BTU Input	199, 000 BTU
Minimum BTU Input	15, 000 BTU/h
Temperature Range	98°F - 185°F
Vent Length	Up to 65 feet
Electrical Requirements	120V AC
Ignition System	Electronic
Warranty	12-year on heat exchanger, 5-year on parts, 1-year on labor