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Grant VORTEX Pro Combi 21e User Manual

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Grant VORTEX Pro Internal Combi
Combi 21e, Combi 26e and Combi 36e Condensing Oil Boiler Range
Installation & Servicing Instructions
Part No. DOC 88. Rev 00. May 2012

Table of Contents

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Grant VORTEX Pro Combi 21e Specifications

General IconGeneral
Boiler TypeCombi
Output21 kW
Efficiency92%
Fuel TypeOil
Central Heating Max Output21 kW
Domestic Hot Water Output21 kW
ERP RatingA
Heating Flow Temperature Range30-80°C
Warranty2 years

Summary

Technical Data

Oil Storage & Supply System

Boiler Installation Information

Condensate Disposal

Electrical

Connecting the Power Supply

Step-by-step guide for connecting the boiler's electrical power supply.

Connecting the Controls - Heating Only

Wiring instructions for connecting timers and room thermostats for heating control.

Connecting the Controls - Heating and Hot Water

Wiring instructions for connecting dual-channel programmers and thermostats.

Flue System and Air Supply

Commissioning

Before Switching On

Pre-commissioning checks to ensure safe operation.

Switching On

Steps for safely switching on and starting the boiler.

Running the Boiler

Procedures for running the boiler and checking settings.

Boiler Servicing

Checking Before Servicing

Pre-service checks to ensure safety and proper operation.

Dismantling Prior to Servicing

Steps for safely disassembling the boiler for servicing.

Fault Finding

Initial Checklist

Basic checks for diagnosing common boiler faults.

Main Fault Finding Procedures

Detailed troubleshooting steps for various operational issues.

Poor Hot Water Checklist

Specific checks for diagnosing problems with domestic hot water supply.

Riello RDB Burner Fault Finding

Troubleshooting guide for issues related to the Riello RDB burner.

Health and Safety Information

Warranty

User Instructions

Lighting your Boiler

Step-by-step guide for safely lighting the boiler.

Points to Check if the Boiler Fails to Light

Troubleshooting steps when the boiler fails to ignite.

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