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Grant Combi 21e User Manual

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UK | DOC 0089 | Rev 1.0 | November 2016
Grant UK Pro External Combi
Combi 21e, Combi 26e and Combi 36e
Condensing Oil Boiler Range
Installation and Servicing Instr
uctions

Table of Contents

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Grant Combi 21e Specifications

General IconGeneral
BrandGrant
ModelCombi 21e
CategoryBoiler
LanguageEnglish

Summary

Technical Data for Grant Vortex Boilers

Boiler Technical Data Specifications

Provides detailed specifications like water content, heat output, connections, and pressures.

Flue Gas Analysis Procedures

Guidance on performing flue gas analysis for commissioning and servicing.

Oil Storage and Supply System Guide

Fuel Supply Requirements

Covers requirements for oil tank positioning, pipework materials, and fire valves.

Burner Oil Connection Procedure

Details the procedure for connecting the fuel pump to the burner.

Boiler Installation Information and Guidelines

Boiler Installation and Mounting

Instructions on mounting the boiler and related pipework considerations.

Filling and Venting the Heating System

Procedures for filling, venting, and pressurizing the heating system.

Pipe Connections Guide

Water Connections and Routing

Details on routing flow, return, and hot water connections.

Domestic Hot Water System Setup

Information on flow rates, water pressure, and pipework for hot water.

Condensate Disposal Procedures

Condensate Trap Inspection and Cleaning

Procedure for checking and cleaning the condensate trap.

Electrical Connections and Wiring

Connecting the Power Supply Safely

Instructions for safely connecting the boiler to the mains electricity supply.

Connecting Controls for Heating & Hot Water

Instructions for connecting controls for both heating and hot water.

Flue System and Air Supply Guidelines

Boiler Commissioning Procedure

Pre-Commissioning Checks

Pre-checks and preparation before initial boiler start-up.

Initial Boiler Switch-On

Step-by-step guide for the initial boiler switch-on and firing.

Running the Boiler and Combustion Checks

Procedures for checking combustion, CO2 levels, and flue gas temperature.

Boiler Servicing and Maintenance

Pre-Servicing Checks

Sequential checks to perform before commencing boiler servicing.

Boiler Internal Cleaning Procedures

Detailed instructions for cleaning internal boiler components.

Burner Cleaning and Maintenance

Procedures for cleaning the combustion head, electrodes, and burner components.

Fault Finding and Troubleshooting

Initial Checklist for Fault Diagnosis

A primary checklist for diagnosing common boiler faults.

Main Fault Finding Procedures

Comprehensive procedures for diagnosing central heating and hot water issues.

Poor Hot Water Performance Checklist

Specific checklist for issues related to poor hot water performance.

Riello RDB Burner Fault Finding Guide

Flowchart for diagnosing faults specific to the Riello RDB burner.

Health and Safety Information

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