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Radiant RSA 24 /8 - User Manual

Radiant RSA 24 /8
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Installation, operating, commissioning and maintenance instructions.
CE
0694
RSA 24.8 - RAD - ING - MAN.INST - 1410.1 - DIGITECH TR - MIAH6 - E04
Technical specification RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY ENGLISH
Instruction Manual
for model
RSA 24 /8
Wall mounted storage combi boiler
room sealed chamber

Table of Contents

Questions and Answers

  • C
    christianericAug 18, 2025
    How to fix Radiant RSA 24 /8 Boiler ionisation problem?
    • J
      Jennifer WilliamsAug 18, 2025
      The possible causes for ionisation problems include no gas supply (check the mains supply), a broken or earthed ignition electrode (replace part), a gas valve malfunction (replace part), mechanical minimum adjustment set too low or ignition sequence set too low (regulate mechanical minimum or slow ignition), gas valve inlet pressure too high for LPG boilers (check the maximum pressure setting), ionisation electrode malfunction (replace part), or a disconnected ionisation electrode cable (connect the cable).
  • L
    Lori OconnellAug 20, 2025
    What to do if my Radiant RSA 24 /8 has no water in the system?
    • A
      Aaron BarnesAug 20, 2025
      If there's no water in your Radiant Boiler system, it might be due to insufficient water pressure (stops at 0.5 bar), in this case you should fill the system. Alternatively, the water pressure switch cable may be disconnected (check the wiring), or the water pressure switch may have malfunctioned (replace part).
  • C
    cdiazAug 22, 2025
    Why is my Radiant Boiler safety thermostat tripped?
    • I
      iguerreroAug 23, 2025
      A tripped safety thermostat in your Radiant Boiler could be due to a thermostat malfunction or being out of calibration, requiring a replacement part. It could also be caused by a disconnected thermostat cable, so check the wiring.
  • J
    Jesse JarvisAug 26, 2025
    What causes inadequate circulation in a Radiant RSA 24 /8 Boiler?
    • C
      Christopher CraigAug 26, 2025
      Inadequate circulation in your Radiant Boiler can stem from an obstructed primary or secondary heat exchanger (clean or replace part) or a pump malfunction, including a dirty pump impeller (clean or replace part).
  • A
    Ashley ThomasAug 27, 2025
    What to do if my Radiant RSA 24 /8 Boiler air pressure switch isn't working?
    • S
      sheaericaAug 28, 2025
      If the air pressure switch in your Radiant Boiler isn't working, it could be due to the switch being out of order (replace part), obstructed inlet or outlet flue gas ducts (check flue gas ducts), or an unstable switch cable (check cable).
  • A
    Anita HernandezAug 30, 2025
    How to resolve flame detection malfunction in Radiant RSA 24 /8?
    • J
      Jonathan WilliamsAug 30, 2025
      A flame detection malfunction in a Radiant Boiler may occur due to an ionisation electrode malfunction (replace or clean part), an ionisation electrode cable malfunction (replace part) or a printed circuit board malfunction (replace part).
  • T
    Travis WattsSep 1, 2025
    What to do if my Radiant Boiler heating sensor malfunctions?
    • T
      Thomas MirandaSep 2, 2025
      If your Radiant Boiler's heating sensor malfunctions, it could be due to the sensor being out of calibration (resistance value 10 kOhms at 25 °C), requiring a replacement part. Another reason might be a disconnected or wet sensor cable (check the power supply connection).
  • K
    Kelly BoltonSep 4, 2025
    What does it mean when my Radiant RSA 24 /8 requests parameter programming?
    • C
      Charles LivingstonSep 4, 2025
      A parameter programming request on your Radiant Boiler indicates a loss of microprocessor memory, which requires you to reprogram parameters.
  • L
    Lisa RobertsSep 6, 2025
    Why is my Radiant RSA 24 /8 Boiler showing a D.H.W. sensor error?
    • B
      Brandi ShepardSep 7, 2025
      A D.H.W. sensor error on your Radiant Boiler could indicate that the sensor is malfunctioning or incorrect (resistance value 10 kOhms at 25 °C), requiring a replacement. Alternatively, the sensor cable may be disconnected or wet (check the power supply connection).
  • B
    bbakerSep 9, 2025
    What to do if my Radiant RSA 24 /8 Boiler modulator is not working?
    • L
      Laura SimpsonSep 9, 2025
      If the gas valve modulator in your Radiant Boiler is out of order, the solution is to replace part.

Summary

General Information

General Warnings

Crucial safety guidelines and precautions for the installation, operation, and maintenance of the appliance.

Product Conformity

Declaration of compliance with standards and information on materials used in the appliance.

Technical Characteristics

Technical Data

Detailed specifications including heat input, output, efficiency, and gas/water/electrical ratings.

Dimensions and Connections

Physical measurements of the boiler and its connection ports for water, gas, and flue systems.

Internal Boiler Components

Identification and description of the main internal parts of the boiler unit.

Circulation Pump Performance Graph

Graphical representation of pump head and flow rate at different speeds.

Water Circuit Diagram

Schematic illustration of the water flow through the boiler's internal components.

DIGITECHTR Control Board

Technical characteristics and functions of the boiler's printed circuit board.

Control Panel Layout

Description of the buttons, display, and terminals on the boiler's control panel.

INFO Menu Functionality

Explanation of how to access and interpret information displayed in the INFO menu.

Installation Instructions

Reference Standards and Requirements

Guidelines on legal standards and specific requirements for boiler installation.

Boiler Room Installation Requirements

Recommendations for ventilation and placement of the boiler within the installation room.

Unpacking and Storage Guidelines

Procedures for safely unpacking the boiler and handling packing materials.

Boiler Mounting and Pipe Positioning

Instructions for physically installing the boiler onto a wall and marking connection points.

Central and Domestic Hot Water Connections

Details on connecting the heating circuit and D.H.W. supply and return pipes.

Domestic Hot Water Circulating Loop

Instructions for connecting the D.H.W. circulating pipe to the boiler.

Gas Supply Connection Procedure

Guidelines for safely connecting the boiler to the gas supply line.

Electrical Connection Safety

Important warnings and procedures for making safe electrical connections to the boiler.

Flue System Installation

Requirements for connecting the flue system to ensure correct and efficient operation.

Horizontal Concentric Flue Kit A Details

Specifications for the horizontal concentric flue kit Ø60/100 mm, including length limits.

Twin Pipe Flue Kit B Details

Specifications for the horizontal twin pipe flue kit Ø80/80, including length limits and bend effects.

Vertical Concentric Flue Kit C2 Details

Specifications for the vertical concentric flue kit Ø80/125, including length limits.

Adjustable Diaphragm Installation (Coaxial)

Instructions for installing and setting adjustable diaphragms for coaxial flue systems.

Adjustable Diaphragm Installation (Twin Pipe)

Instructions for installing adjustable diaphragms on the air intake for twin pipe flue systems.

Diaphragm System Setting Guide

Tables showing diaphragm regulation based on flue length for kits A, B, and C2.

Commissioning the Appliance

Commissioning Safety Warnings

Critical warnings for qualified personnel performing initial boiler setup and checks.

System Filling Procedure

Step-by-step guide for filling the heating system and checking pressure.

Frost Protection Operation

Explanation of the boiler's automatic frost protection mechanisms and recommendations.

Initial Boiler Startup Procedure

Detailed steps for starting the boiler for the first time, including gas checks and mode selection.

Regulating and Adjusting the Boiler

Boiler Parameter Configuration Table

List of adjustable parameters, their values, and corresponding functions for boiler regulation.

Accessing Boiler Parameter Settings

Instructions on how to navigate and enter the boiler's parameter adjustment menu.

Setting Key Boiler Parameters

Guide to modifying parameters like boiler type, gas supply, and heating temperature settings.

Gas Valve Pressure Adjustment

Procedure for adjusting gas valve settings for maximum output and pressure.

Gas Supply Technical Data

Tables detailing gas pressure and consumption specifications for different gas types.

Heating Output vs. Pressure Diagram

Graphical representation of boiler output capacity relative to gas pressure.

Gas Type Conversion Procedure

Steps for converting the boiler to operate with different gas types like LPG or Natural Gas.

Maintenance and Servicing

General Maintenance Warnings

Essential safety precautions before commencing any maintenance operations on the boiler.

Annual Boiler Inspection Checklist

Recommended checks for ensuring safe and efficient boiler operation during annual servicing.

Accessing Boiler Internals

Instructions for safely removing panels to access internal components for maintenance.

Draining the Central Heating System

Procedure for safely draining the central heating system for maintenance or seasonal storage.

Boiler Wiring Diagrams

Schematic diagrams illustrating the electrical connections of the boiler's components.

Optional Remote Control Wiring

Instructions for connecting optional outdoor sensors and remote control units.

Troubleshooting Fault Codes

Guide to identifying and resolving common boiler error codes and their causes.

Understanding Boiler Function Codes

Explanation of specific function codes (F07, F08, F09, F28) used for testing and operation.

Replacement Parts List

List of main components with their corresponding part codes for ordering replacements.

Radiant RSA 24 /8 Specifications

General IconGeneral
BrandRadiant
ModelRSA 24 /8
CategoryBoiler
LanguageEnglish

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