Summary of the content on the page No. 1
X XT TR RA A H HIIG GH H E EF FF FIIC CIIE EN NC CY Y
Release R.1.3 UK
28
30
50
60
Installation
User and
Service Manual
WATER PRODUCTS
COMPANY
A DIVISION OF A. O. SMITH CORPORATION
XTRA HIGH EFFICIENCY
Summary of the content on the page No. 2
www.aosmithinternational.com your installer
Summary of the content on the page No. 3
Warning Read this manual carefully before first using the water heater. Failure to read this manual and to follow the instructions in this manual may lead to accidents, personal injury, and damage to the appliance. Copyright Copyright 2003 A.O. Smith Water Products Company All rights reserved. Nothing from this publication may be copied, reproduced and/or published by means of printing, photocopying or by whatsoever means, without the prior written approval of A.O. Smith Water Products Compa
Summary of the content on the page No. 4
4 Instruction Manual BFC
Summary of the content on the page No. 5
gis gis Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.2 What to do if you smell gas- - - - - - - - - - - - - - - - - - - - - - - - - 9 1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.4 Target groups - - - - - - - - -
Summary of the content on the page No. 6
gis 3.10 Electrical connection - - - - - - - - - - - - - - - - - - - - - - - - - - - 30 3.10.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - 30 3.10.2 Preparation- - - - - - - - - - - - - - - - - - - - - - - - - - - 30 3.10.3 Mains voltage - - - - - - - - - - - - - - - - - - - - - - - - - 31 3.10.4 Isolating Transformer - - - - - - - - - - - - - - - - - - -
Summary of the content on the page No. 7
gis 8.5 Week programme - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 8.5.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - 55 8.5.2 Starting up and shutting down the week program- - - - - - - - 55 8.5.3 Changing the appliances standard week program - - - - - - - 55 8.5.4 Adding times to a week program - - - - - - - - - - - - - - - - 57 8.5.5 Deleting times from a week program - -
Summary of the content on the page No. 8
gis 13.2 Tank warranty- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 89 13.3 Installation and conditions of use - - - - - - - - - - - - - - - - - - - - - 89 13.4 Exclusions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 89 13.5 Scope of the warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - 90 13.6 Claims - - - - - - - - - - - - -
Summary of the content on the page No. 9
About the appliance gis gis 1 Introduction 1.1 About the appliance This manual describes how to install, service and use the BFC appliance. The BFC appliance is a condensing room-sealed water heater with a fan in the air intake. A concentric chimney connector is fitted standard to the appliance. Alternatively, the appliance can be connected using a parallel system. Installation types possible with this appliance are C13, C33, C43, C53 and C63. The information in this manual is applicable to
Summary of the content on the page No. 10
1 Introduction gis Furthermore, the installation must comply with the manufacturers instructions. n Remark Later amendments and/or additions to all regulations, requirements and guidelines published on or prior to the moment of installing, will apply to the installation. 1.4 Target groups The three target groups for this manual are: (end) users; installers; service and maintenance engineers. Symbols on each page indicate the target groups for whom the information is intended. See Table
Summary of the content on the page No. 11
Overview of this document gis 1.7 Overview of this Table 1.2 provides an overview of the contents of this document. document Table 1.2 Contents of document Chapter Target groups Description 2 Functioning of the This chapter describes how the appliance functions. appliance gis 3 Installation This chapter describes the installation activity to be completed before you actually start up the appliance. is 4 Filling and draining This chapter describes how to fill and drain the appliance. gis 5 The c
Summary of the content on the page No. 12
1 Introduction gis 12 Instruction Manual BFC
Summary of the content on the page No. 13
Introduction gis gis 2 Functioning of the appliance 2.1 Introduction Topics covered in this chapter: Functional description of the appliance; The appliances heating cycle; Protection for the appliance; Safety of the installation. 2.2 Functional Figure 2.1 shows a cut-away view of the appliance. description of the appliance Legend a a plastic top cover p b b hot water outlet q c electrical connection block c r d ThermoControl d s e pressure switch e f control panel f g temperat
Summary of the content on the page No. 14
2 Functioning of the appliance gis In this appliance the cold water enters the bottom of the tank via the cold water inletn. The tap water, heated by the combustion chamberh and heat exchangerk, leaves the tank through the hot water outletb. Once the appliance is completely filled with water, it remains constantly under water supply pressure. As hot water is drawn from the appliance, cold water is immediately added. The air required for combustion is forcibly delivered to the burnerq by th
Summary of the content on the page No. 15
Protection for the appliance gis 2.4.1 Water temperature protection With temperature sensor T1g and temperature sensor T2m, the ThermoControl monitors three temperatures which are important for safety. Table 2.1 explains the functioning of the temperature sensors. Table 2.1 Temperature protection Protection Description Against frost The frost protection cuts in. The water is heated to 20°C. (T < 5°C or T < 5°C) 1 2 For maximum water temperature The high-limit safeguard serves to prevent overh
Summary of the content on the page No. 16
2 Functioning of the appliance gis Table 2.2 shows the trip point per appliance. Table 2.2 Pressure switch trip points Applianc Pressure differential [Pa] e Closing Opening BFC 28 > 635 < 605 BFC 30 > 855 < 825 BFC 50 > 885 < 855 BFC 60 > 1085 < 1055 n Remark The trip point of the pressure switch is not adjustable. 2.4.5 Ionisation rod To ensure that no gas will flow when there is no combustion, an ionisation rod has been fitted. The ThermoControl uses this rod for flame detection, by means of
Summary of the content on the page No. 17
Introduction is is 3 Installation Warning The installation should be carried out by an approved installer in compliance with the general and local regulations imposed by the gas, water and power supply companies and the fire service. The appliance may only be installed in a room which complies with the requirements stated in national and local ventilation regulations. Refer also to paragraph 1.3 Regulations. 3.1 Introduction This chapter describes the installation activities to be carried o
Summary of the content on the page No. 18
3 Installation is 3.3.1 Humidity and ambient temperature The boiler room must be frost-free, or be protected against frost. Table 3.1 shows the environmental conditions that must be adhered to, for correct functioning of the electronics present in the appliance to be guaranteed. Table 3.1 Humidity and ambient temperature specifications Humidity and ambient temperature Humidity max. 93% RH at +25°C Ambient temperature Functional: 0 ≤ t ≤ 60°C 3.3.2 Maximum floor loading In connection with the a
Summary of the content on the page No. 19
Environmental conditions is If the available clearance is less than 100 cm, flexible magnesium anodes may be ordered from A.O. Smith, the installer / supplier. n Remark When installing the appliance, be aware that any leakage from the tank and/ or connections can cause damage to the immediate environment or floors below the level of the boiler room. If this is the case, then the appliance should be installed above a wastewater drain or in a suitable metal leak tray. The leak tray must have a
Summary of the content on the page No. 20
3 Installation is 3.4 Technical The appliance is supplied without accessories. Check the dimensions and other specifications for the accessories to be used, based on Figure 3.2 and specifications Table 3.6. IMD-0073 Figure 3.2 Plan and elevation of the appliance 20 Instruction Manual BFC
