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Rinnai INFINITY A24 User Manual

Rinnai INFINITY A24
20 pages
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INFINITY EF26 and A-Series continuous flow water heaters
Installation guide
Suitable for the following Rinnai INFINITY models:
A16 (REU-A1620WG-ZK)
A20 (REU-A2024WG-ZK)
A24 (REU-A2426WG-ZK)
A26 (REU-A2626WG-ZK)
EF26 (REU-E2626W-ZK)
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Rinnai INFINITY A24 Specifications

General IconGeneral
Energy RatingENERGY STAR Certified
Maximum BTU Input199, 000 BTU/hr
Minimum BTU Input15, 000 BTU/hr
Energy Factor0.82
Maximum Water Pressure150 psi
Ignition TypeElectronic Ignition
Gas TypeNatural Gas
Temperature Range98°F - 140°F
Water Connection3/4 inch
Electrical Requirements120V, 60Hz
Minimum Water Pressure15 psi

Summary

Important

Warning

Improper installation, adjustment, alteration, service, and maintenance can cause property damage, personal injury or loss of life.

Before installation

Specification

Scope of use

Defines the intended applications and limitations for Rinnai INFINITY water heaters.

Specification summary

Provides key technical data, including thermal efficiency, capacity, input/output, and weight.

Safety devices

Lists built-in safety features such as flame failure, boil-dry protection, and overheat protection.

Line pressures

Specifies the required Natural Gas (NG) and LPG line pressures for proper operation.

Connections and fittings

A-Series

Details connection points and dimensions for A-Series models.

EF26

Details connection points and dimensions for the EF26 model.

Service connection points

Highlights essential connection requirements like isolation valves and unions for safe installation.

Dimensions (mm)

Appliance location

Horizontal obstructions

Specifies minimum clearances required around the flue terminal to prevent wind interference.

General installation information

Securing the Rinnai INFINITY

Guidance on wall mounting, fixing methods, and structural support requirements.

Pipe sizing

Details on gas and water pipe sizing considerations for optimal performance.

Water supply

Information on water pressure limitations, chemistry, and the need for filters.

Frost protection

Explains the automatic frost protection feature and its operating temperatures.

Frost protection thermistor

Locates and describes the function of the external thermistor for frost protection.

Water delivery temperature

Requirements for Rinnai INFINITY units installed without controllers

Details temperature limitations for hygiene areas and the need for Temperature Limiting Devices (TLDs).

Controller installation

General information

Notes on controller compatibility, servicing, and Rinnai-specific requirements.

Master controller

Defines the role of the master controller and its placement restrictions.

Water controller configurations

Explains how many controllers can be fitted and their types (Compact, Kitchen Deluxe).

Controller location

Provides guidelines on suitable and unsuitable locations for water controllers.

EF26 condensate neutraliser tank and drain

Important considerations for the neutraliser drain pipe

Guidance on the condensate drain pipe, including material suitability and discharge points.

Installation

Details on the installation of the condensate drain line, including discharge requirements and air gaps.

Interconnection of condensate drain lines

Procedures for joining condensate/neutraliser drain lines from multiple heaters.

Common stack discharge

Requirements for discharging condensate into a common stack in multi-storey buildings.

Tundish drain lines

Specifications for drain lines connected to tundishes.

Areas subject to freezing

Recommendations for insulating drain pipes in freezing-prone areas.

Commissioning

Commissioning steps

A step-by-step guide to testing and verifying the appliance after installation.

Check cold water inlet filter

Instructions for inspecting and cleaning the cold water inlet filter.

Customer handover

Guidance on explaining the appliance's operation and maintenance to the customer.

Sideways flue diverter dip switch changes

PCB interface and dip switch settings

Basic operation of the PCB interface

Details on navigating the PCB menu, altering values, and saving settings.

EF26 error code 92

Information on a specific error code related to the neutraliser and how to cancel it.

A-Series controller communication cables

Single cables can be used

How to terminate single communication cables for A-Series controllers.

Paired cables are to be used

How to terminate paired communication cables for A-Series controllers.

Connecting one or two communication cables

Steps for connecting one or two communication cables to the water heater.

Connecting three or four communication cables

Steps for connecting three or four communication cables to the water heater.

EF26 controller communication cables

Connecting communication cables to the mini-plug

Guidance on connecting controller cables to the PCB mini-plug safely.

Connecting communication cables to the PCB

Steps for routing and connecting controller cables to the appliance's PCB.

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