Hamworthy Sherborne SE71c User Manual

IMPORTANT NOTE
THESE INSTRUCTIONS MUST BE READ
AND UNDERSTOOD BEFORE INSTALLING,
COMMISSIONING, OPERATING OR
SERVICING EQUIPMENT
Sherborne Series Boilers
Room Sealed, Fully Modulating, Pre-Mix,
Gas Fired Boilers for Heating & Domestic
Hot Water Installations
Installation, Commissioning
and Servicing Instructions
SE 71c - FULLY CONDENSING
SE 64he - HIGH EFFICIENCY
NATURAL GAS I
2H
LPG-PROPANE I
3P

Hamworthy Sherborne SE71c Specifications

General

Brand	Hamworthy
Model	Sherborne SE71c
Category	Boiler
Language	English

Summary

Important Safety Note

Introduction to Sherborne Boilers

Size and Space Requirements

Boiler Layout and Description

Site Location and Preparation

Site Location, Gas, and Water Supply

Requirements for site location, gas supply pressure, and water connections.

Flue System Requirements

Electrical Supply and Mounting

Electrical Supply Specifications and Safety

Details on voltage, fusing, wiring, and isolation for safe electrical connections.

Boiler Mounting Procedure

Step-by-step guide for mounting the boiler to a wall or frame.

Flue System Connections

Through Wall Horizontal Balanced Flue

Instructions for connecting a horizontal balanced flue terminal (80/125mm).

Extended Balanced Flue Connection

Guidelines for connecting extended horizontal or vertical balanced flues (100/150mm).

Room Sealed Flue Connections

Twin Pipe Room Sealed Flue

Single Pipe Room Sealed Flue

System Types and Electrical Connections

General Electrical Connection Points

Pre-Commissioning Checks

Gas, Ventilation, and Pipework Checks

Ensuring correct gas supply, ventilation, and pipework installation.

Flue and Electrical System Verification

Verifying flue system and electrical connections are correctly installed.

Boiler Checks Before Lighting

Gas System Leak Check Procedure

Procedure for checking for leaks in the appliance gas system using a manometer.

Pre-Lighting Checks and Settings

Essential checks including gas supply, ignition, sensors, and thermostat settings.

Initial Lighting and Safety Procedures

Lighting the Boiler and Flame Assessment

Steps for lighting the boiler, safety checks, and flame signal assessment.

Setting Boiler Parameters and Gas Pressure

Combustion Checks and User Handover

Performing Combustion Analysis

Procedure for checking and adjusting CO2 levels for optimal combustion.

Controls Operation Overview

Fascia Button Functions

Display Screen Information and Symbols

Operating Modes and Information Access

Selecting Boiler Operating Modes

Error Code Display and Fault Diagnosis

Internal Error Code Display Procedure

Error Code Table and Troubleshooting

User Settings and Functions

Initialisation and Parameter Settings

Main Boiler Wiring Diagram

LMU Wiring Diagram

Fault Finding and Lockout Causes

Temperature Limit Thermostat Issues

Common Boiler Lockout Causes

List of potential causes for boiler lockout, including ignition and pressure issues.

Servicing Procedures

Annual Service and Preliminary Cleaning

Steps for annual servicing, including preliminary checks and cleaning.

Heat Exchanger Cleaning Procedure

Component Replacement Procedures

Igniter, Flame Probe, and Sensor Replacement

Gas Valve, Venturi, and Fan Assembly Replacement

Main Control PCB Replacement