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WarmFlow Utility U90HE - User Manual

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Boiler Manual
Incorporating: User Instructions
Installation Instructions
Service Instructions
Guarantee Terms & Conditions
High Efficiency
Condensing Boilers
For use with Kerosene only
Models covered by this manual:
B-Series
Boilerhouse B70HE B90HE B120HE
U-Series
Utility U70HE U90HE U120HE U150HE
Utility Pumped UP70HE UP90HE UP120HE UP150HE
Utility System US70HE US90HE US120HE
Utility Combi UC70HE UC90HE UC120HE
K-Series
Kabin Pak K70HE K90HE K120HE K150HE
Kabin Pak Pumped KP70HE KP90HE KP120HE KP150HE
Kabin Pak System KS70HE KS90HE KS120HE
Kabin Pak Combi KC70HE KC90HE KC120 HE
LEAVE THIS MANUAL WITH THE END USER
Cert. no. FM29884

Table of Contents

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Summary

User Instructions and Boiler Operation

Dual Thermostat Control

Explains adjustment and function of the dual thermostat for radiator temperature control.

High Limit Thermostat Reset Procedure

Details how to reset the high limit thermostat after it has tripped.

Burner Lockout Indicator

Describes the function of the red reset button and when the burner locks out.

System Pressure Monitoring

Outlines recommended system pressure levels and actions if pressure is outside range.

Filling Loop Operation

Instructions on using the filling loop to top up system pressure and inhibitor considerations.

Combi Control Panel Overview

Describes the user-adjustable heating thermostat and default on/off switches.

General Information and Requirements

4.1 Introduction and Compliance

Notes on testing, accreditation, and compliance with building regulations.

4.2 General Installation Requirements

Lists essential regulations and standards for boiler installation.

4.3 Combi Boiler Operation Details

Explains DHW priority, heat store recovery, and pump overrun function.

4.4 Baffle Positioning Guide

Illustrates correct baffle placement for heat exchanger efficiency.

4.5 Boiler Component Overviews

Diagrams and lists of key components for B, U, and K series boilers.

Technical Details and Data

5.1 Combi Sequence of Operation Flow Chart

A visual representation of the boiler's operational logic for heating and hot water.

5.2 Boiler Dimensions and Specifications

Detailed dimensional data for various boiler models (B, U, K series).

5.3 Condensate Disposal System

Instructions and diagrams for the safe and correct disposal of boiler condensate.

5.4 Technical Data Tables

Comprehensive technical specifications for B-Series, U-Series, and K-Series boilers.

Electricity Supply & Wiring Details

6.1 Dual-Safe Thermostat (Non-Combi)

Details the wiring and function of the dual-safe thermostat in non-combi models.

6.2 RDB Burner Control Box Wiring

Explains the wiring connections for the RDB burner control box.

6.3 Combi Boiler Wiring Details

Provides wiring diagrams and notes for combi boiler electrical connections.

6.4-6.6 Programmer & Timer Installation

Guides for installing optional programmers and timers, including wiring diagrams.

Oil Supply System Configuration

7.1 One Pipe Gravity System

Diagram and explanation of a one-pipe gravity fed oil supply system.

7.2 Two Pipe System

Diagram and explanation of a two-pipe oil supply system.

7.3 De-aerator System Configuration

Details on the installation and use of a de-aerator system for oil supply.

7.4 One Pipe Lift System

Diagram and explanation of a one-pipe lift system for oil supply.

7.5 Bio Fuel Usage Instructions

Guidelines and precautions for using bio fuel in the boiler.

Flue System Installation and Guidelines

8.1 Flue Options, Components & Dimensions

Lists available Warmflow flue kits and their general dimensional information.

8.1.1 Conventional Flue Guidelines

Recommendations for the installation of conventional flues, including termination.

8.1.2 Condensing Boiler Flue Kit Installation

Instructions for fitting flue thermostats and connecting condensing boiler flue kits.

8.1.3-8.1.11 Specific Flue Kits & Calculations

Details on various flue kits (balanced, liner), components, and flue length calculations.

8.2 Flue Terminal Locations

Specifies minimum distances for flue terminal placement relative to building features.

Air Supply for Combustion & Ventilation

9.1 Open Flue Boiler Air Supply

Guidelines for providing combustion and ventilation air for open flue boilers.

9.2 Balanced Flue Boiler Air Supply

Requirements for air supply for balanced flue boilers installed in compartments.

Installation Requirements and System Setup

10.1 General Installation Requirements

Covers hearth, service access, heating system preparation, air vents, and pipework.

10.2 Sealed Systems Details

Information on expansion vessel sizing, system filling, pressure, and relief valves.

10.3 Combi Domestic Hot Water Requirements

Details mains water pressure, hardness, flow restrictors, and borehole supply considerations.

Burner Components and Adjustment

11.1 RDB Burner Overview

Identifies key components of the RDB burner, including pump and control box.

11.2 Oil Pump Configuration

Explains the oil pump setup for one-pipe and two-pipe systems.

11.3 Electrode Setting Procedure

Instructions for setting and adjusting the burner electrodes.

11.4 Burner Start-Up Cycle Sequence

Illustrates the normal and lockout sequences for the burner's startup process.

11.5 Air Damper Adjustment Guide

Guidance on adjusting the air damper for optimal combustion based on installation conditions.

Commissioning and Servicing Procedures

12.1 Boiler Commissioning Process

Outlines the requirements for proper boiler commissioning by certified technicians.

12.2 Boiler Servicing Requirements

Details the necessary annual servicing procedures and checks by qualified engineers.

Burner Fault Finding Guide

13.1 Riello RDB Burner Fault Diagnosis

A flowchart for troubleshooting common faults and issues with the Riello RDB burner.

Combi Boiler Fault Finding

14.1 Central Heating Fault Diagnosis

A flowchart to diagnose and resolve central heating operational problems in combi boilers.

14.2 Domestic Hot Water Fault Diagnosis

A flowchart to diagnose and resolve domestic hot water operational problems.

Optional Digital Timer Operation

15.1 Timer Operating Instructions

Comprehensive guide on setting up and operating the digital timer for heating schedules.

Spare Parts Identification

16.1 RDB 2.2 Burner Spares List

A detailed list of spare parts and their codes for the RDB 2.2 burner.

16.2 RDB 3.2 Burner Spares List

A detailed list of spare parts and their codes for the RDB 3.2 burner.

16.3 Boiler Pipe Spares Identification

Identifies specific pipework components and their part numbers for different boiler models.

16.4 Boiler Short Parts List

A list of essential boiler components and their corresponding part codes.

Manufacturer Guarantees and Terms

17.1 Warmflow Manufacturer Guarantees

Outlines the terms and conditions of the boiler manufacturer's guarantee.

17.2 Guarantee Conditions and Exclusions

Details the requirements for maintaining the guarantee and common exclusions.

Summary

User Instructions and Boiler Operation

Dual Thermostat Control

Explains adjustment and function of the dual thermostat for radiator temperature control.

High Limit Thermostat Reset Procedure

Details how to reset the high limit thermostat after it has tripped.

Burner Lockout Indicator

Describes the function of the red reset button and when the burner locks out.

System Pressure Monitoring

Outlines recommended system pressure levels and actions if pressure is outside range.

Filling Loop Operation

Instructions on using the filling loop to top up system pressure and inhibitor considerations.

Combi Control Panel Overview

Describes the user-adjustable heating thermostat and default on/off switches.

General Information and Requirements

4.1 Introduction and Compliance

Notes on testing, accreditation, and compliance with building regulations.

4.2 General Installation Requirements

Lists essential regulations and standards for boiler installation.

4.3 Combi Boiler Operation Details

Explains DHW priority, heat store recovery, and pump overrun function.

4.4 Baffle Positioning Guide

Illustrates correct baffle placement for heat exchanger efficiency.

4.5 Boiler Component Overviews

Diagrams and lists of key components for B, U, and K series boilers.

Technical Details and Data

5.1 Combi Sequence of Operation Flow Chart

A visual representation of the boiler's operational logic for heating and hot water.

5.2 Boiler Dimensions and Specifications

Detailed dimensional data for various boiler models (B, U, K series).

5.3 Condensate Disposal System

Instructions and diagrams for the safe and correct disposal of boiler condensate.

5.4 Technical Data Tables

Comprehensive technical specifications for B-Series, U-Series, and K-Series boilers.

Electricity Supply & Wiring Details

6.1 Dual-Safe Thermostat (Non-Combi)

Details the wiring and function of the dual-safe thermostat in non-combi models.

6.2 RDB Burner Control Box Wiring

Explains the wiring connections for the RDB burner control box.

6.3 Combi Boiler Wiring Details

Provides wiring diagrams and notes for combi boiler electrical connections.

6.4-6.6 Programmer & Timer Installation

Guides for installing optional programmers and timers, including wiring diagrams.

Oil Supply System Configuration

7.1 One Pipe Gravity System

Diagram and explanation of a one-pipe gravity fed oil supply system.

7.2 Two Pipe System

Diagram and explanation of a two-pipe oil supply system.

7.3 De-aerator System Configuration

Details on the installation and use of a de-aerator system for oil supply.

7.4 One Pipe Lift System

Diagram and explanation of a one-pipe lift system for oil supply.

7.5 Bio Fuel Usage Instructions

Guidelines and precautions for using bio fuel in the boiler.

Flue System Installation and Guidelines

8.1 Flue Options, Components & Dimensions

Lists available Warmflow flue kits and their general dimensional information.

8.1.1 Conventional Flue Guidelines

Recommendations for the installation of conventional flues, including termination.

8.1.2 Condensing Boiler Flue Kit Installation

Instructions for fitting flue thermostats and connecting condensing boiler flue kits.

8.1.3-8.1.11 Specific Flue Kits & Calculations

Details on various flue kits (balanced, liner), components, and flue length calculations.

8.2 Flue Terminal Locations

Specifies minimum distances for flue terminal placement relative to building features.

Air Supply for Combustion & Ventilation

9.1 Open Flue Boiler Air Supply

Guidelines for providing combustion and ventilation air for open flue boilers.

9.2 Balanced Flue Boiler Air Supply

Requirements for air supply for balanced flue boilers installed in compartments.

Installation Requirements and System Setup

10.1 General Installation Requirements

Covers hearth, service access, heating system preparation, air vents, and pipework.

10.2 Sealed Systems Details

Information on expansion vessel sizing, system filling, pressure, and relief valves.

10.3 Combi Domestic Hot Water Requirements

Details mains water pressure, hardness, flow restrictors, and borehole supply considerations.

Burner Components and Adjustment

11.1 RDB Burner Overview

Identifies key components of the RDB burner, including pump and control box.

11.2 Oil Pump Configuration

Explains the oil pump setup for one-pipe and two-pipe systems.

11.3 Electrode Setting Procedure

Instructions for setting and adjusting the burner electrodes.

11.4 Burner Start-Up Cycle Sequence

Illustrates the normal and lockout sequences for the burner's startup process.

11.5 Air Damper Adjustment Guide

Guidance on adjusting the air damper for optimal combustion based on installation conditions.

Commissioning and Servicing Procedures

12.1 Boiler Commissioning Process

Outlines the requirements for proper boiler commissioning by certified technicians.

12.2 Boiler Servicing Requirements

Details the necessary annual servicing procedures and checks by qualified engineers.

Burner Fault Finding Guide

13.1 Riello RDB Burner Fault Diagnosis

A flowchart for troubleshooting common faults and issues with the Riello RDB burner.

Combi Boiler Fault Finding

14.1 Central Heating Fault Diagnosis

A flowchart to diagnose and resolve central heating operational problems in combi boilers.

14.2 Domestic Hot Water Fault Diagnosis

A flowchart to diagnose and resolve domestic hot water operational problems.

Optional Digital Timer Operation

15.1 Timer Operating Instructions

Comprehensive guide on setting up and operating the digital timer for heating schedules.

Spare Parts Identification

16.1 RDB 2.2 Burner Spares List

A detailed list of spare parts and their codes for the RDB 2.2 burner.

16.2 RDB 3.2 Burner Spares List

A detailed list of spare parts and their codes for the RDB 3.2 burner.

16.3 Boiler Pipe Spares Identification

Identifies specific pipework components and their part numbers for different boiler models.

16.4 Boiler Short Parts List

A list of essential boiler components and their corresponding part codes.

Manufacturer Guarantees and Terms

17.1 Warmflow Manufacturer Guarantees

Outlines the terms and conditions of the boiler manufacturer's guarantee.

17.2 Guarantee Conditions and Exclusions

Details the requirements for maintaining the guarantee and common exclusions.

WarmFlow Utility U90HE Specifications

General IconGeneral
BrandWarmFlow
ModelUtility U90HE
CategoryBoiler
LanguageEnglish

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