Rinnai R75LSI Tankless Water Heater Manual and Specifications

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Type of Appliance

Rinnai Model Number

Operation / Exhaust System

Minimum/Maximum Gas Rate (Input)

Electrical

Electrical Consumption

Ignition System

Hot Water Capacity

Temperature

Temperature (without remote)

Approved Gas Types

Installation

Energy Factor

Thermal Efficiency

Service Connections

Water Flow Control

Minimum/Maximum Water Supply Pressure

R75LSi (VA2528FFUD)

Temperature controlled, continuous flow, gas hot water system REU-VA2528FFUD(A)-UC

Forced combustion / Direct vent

15,000 - 180,000 BTU/h (Natural Gas and Propane)

Appliance:

AC 120 Volts - 60 Hz

Controller:

DC 12 Volts

Normal

65 watts

Standby

2.0 watts

Anti-frost protection

100 watts

Direct electronic ignition

 

0.6 to 7.5 GPM (35° F rise)

 

98° - 120° F (factory default) Maximum temperature is selectable at 120° F or at 140° F; 98° - 160° F available with the MCC-91 controller for commercial and hydronic applications

120° F (factory default)

Natural or Propane (ensure unit matches gas type)

Indoor only

 

Natural Gas: 0.82

Propane: 0.82

Natural Gas: 84%

Propane: 84%

Gas supply: 3/4 inch MNPT

Cold water inlet: 3/4 inch MNPT

Hot water outlet: 3/4 inch MNPT

Water flow sensor, electronic water control device and fixed by-pass 20 - 150 PSI (recommended 30-80 PSI for maximum performance)

FLOW TABLE

8.0

 

 

 

 

 

 

 

7.0

 

 

 

 

 

 

 

6.0

 

 

 

 

 

 

 

(gpm)

 

 

 

 

 

 

 

5.0

 

 

 

 

 

 

 

4.0

 

 

 

 

 

 

 

Flow3.0

 

 

 

 

 

 

 

Water

 

 

 

 

 

 

 

2.0

 

 

 

 

 

 

 

1.0

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

0

25

50

75

100

125

150

delta T - Temperature Rise (ºF)

© 2008 Rinnai Corporation

R75LSi SP

8/2008

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Contents Flow Table R75LSi VA2528FFUDNOx Warranty Water Temperature Control Controller Controller CableDimensions Weight 50 LBS 23 KG

R75LSI (VA2528FFUD) specifications

The Rinnai R75LSI (VA2528FFUD) is a modern and efficient tankless water heater designed for residential use, providing a continuous supply of hot water while conserving energy. With its innovative features and advanced technologies, the R75LSI stands out as an ideal choice for households seeking both reliability and efficiency.

One of the main features of the Rinnai R75LSI is its impressive heating capacity. It can deliver up to 7.5 gallons of hot water per minute, making it suitable for homes with multiple bathrooms and high hot water demands. This capacity ensures that families can enjoy hot showers, washing dishes, and running laundry simultaneously without running out of hot water.

The R75LSI is equipped with a highly efficient heat exchanger that utilizes stainless steel, enhancing its durability and resistance to corrosion. This feature contributes to the unit's longevity and performance, ensuring that homeowners receive hot water for many years without the need for frequent replacements.

A standout technology of this model is its condensing technology, which allows the unit to achieve an impressive energy efficiency rating. The R75LSI operates with an Energy Factor of up to 0.95, meaning that a significant portion of the energy used to heat water is converted into hot water, leading to lower energy costs and reduced environmental impact.

Safety is a top priority with the Rinnai R75LSI. It comes equipped with multiple safety features, including an overheat cut-off switch and a freeze protection mechanism. These safeguards ensure that the unit operates safely under various conditions, giving homeowners peace of mind.

Installation flexibility is another characteristic that enhances the R75LSI's appeal. It can be installed in various locations, including indoors and outdoors, allowing homeowners to optimize space without compromising on performance. The compact design ensures that the unit can fit into tight spaces, while still providing powerful and efficient hot water supply.

In conclusion, the Rinnai R75LSI (VA2528FFUD) combines high performance, energy efficiency, and safety features into one powerful tankless water heater. Its ability to deliver a continuous flow of hot water, coupled with its durable construction and advanced technologies, makes it an excellent choice for modern households looking to enhance their comfort while being mindful of energy consumption.