Rinnai R75LSI (VA2528FFUD) User Manual

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delta T - Temperature Rise (ºF)
Water Flow (gpm)
R75LSi (VA2528FFUD)
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
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)
© 2008 Rinnai Corporation
R75LSi SP 8/2008
FLOW TABLE

Rinnai R75LSI (VA2528FFUD) Specifications

General

Type	Tankless
Maximum Flow Rate	7.5 GPM
Energy Factor	0.82
Installation Type	Indoor
Vent Diameter	3 inches
Fuel Type	Natural Gas
Temperature Range	98°F to 140°F
Maximum BTU Input	180, 000 BTU/hr
Ignition Type	Electronic
Warranty	12-year on heat exchanger, 5-year on parts, 1-year on labor

Summary

Product Specifications

Appliance Type and Operation

Defines the appliance as a temperature-controlled, continuous flow gas hot water system with forced combustion and direct vent.

Gas Rate and Electrical Consumption

Details the minimum/maximum gas input rate and electrical power consumption in normal, standby, and anti-frost modes.

Hot Water Capacity and Temperature Settings

Specifies the hot water output capacity in GPM for a given temperature rise and default/selectable temperature ranges.

Energy Efficiency and Service Connections

Lists the Energy Factor, Thermal Efficiency for Natural Gas and Propane, and sizes for service connections.

Water Flow Control and Pressure Requirements

Describes the water flow control mechanism and the required minimum/maximum water supply pressure.

Controller and Safety Features

Controller Options

Lists available controller models including standard, deluxe, bathroom, wireless, and commercial options.

Safety Devices

Details built-in safety features such as flame failure, boiling protection, thermal fuse, and anti-frost protection.

Installation Clearances and Gas Specifications

Clearances from Combustibles

Specifies required clearances from combustible materials for various installation types like closets or attics.

Gas Supply and Manifold Pressure

Defines minimum/maximum gas supply pressures and manifold gas pressures for natural gas and propane at high fire.

Warranty and Dimensions

Warranty Information

Outlines warranty periods for heat exchangers and other parts, with specific conditions for different applications.

Product Dimensions

Provides detailed measurements of the appliance unit and notes on wall bracket adjustability.