A.O. Smith 28 30 50 60 Ais

Appendices

92 Instruction Manual BFC

Ais

A.2 Electrical diagram

BFC

TERMINAL STRIP CONNECTIONS:

AEarth

N Neutral

L1Phase input of controller

L2Phase input of isolating transformer (primary side)

L3Phase output of isolating transformer (secondary side)

L4Phase input of program-controlled pump

L5Phase input of continuous pump

COMPONENTS:

A Controller

B Ionisation rod

C Glow igniter

D Gas control

E Burner earth connection

F Extra ON mode switch

G Continuous pump

H Program-controlled pump

J Extra error signal

K Isolating transformer

L Double-pole mains switch

M ON/OFF switch control

N Display/Flat cable

OFan

P Temperature sensor (T2 - bottom of tank)

Q Dummy

R Temperature sensor (T1 - top of tank)

S Selection resistor

T Pressure switch

CONTROLLER CONNECTIONS:

J1 Connector for display to controller

J2 Connector for power supply to controller

J19 Connector for extra error signal

J20 Connector for gas control

J21 Connector for program-controlled pump

J24 Connector for fan

JP2 Connector for ionisation rod and glow igniter

JP3 Connector for temperature sensor T2

JP4 Connector for dummy

JP5 Connector for temperature sensor T1

JP6 Connector for selection resistor and pressure switch

JP8 Connector for extra ON mode switch

F1 Fuse

F2 Fuse

Figure A.1 Electrical diagram BFC

#

$

%

&

'

(

= white (flat ca-

= grey/beige

= brown

= blue

= yellow/green

= black

% = brown

Contents

Main Page Release R.1.3 UK 3 Copyright Trademarks Liability More information Page Release R.1.3 UK 5 Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 2 Functioning of the appliance- - - - - - - - - - - - - - - - - - 13 3 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 4 Filling and draining - - - - - - - - - - - - - - - - - - - - - - - 39 5 The control panel- - - - - - - - - - - - - - - - - - - - - - - - 43 6 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 45 7 Starting up and shutting down - - - - - - - - - - - - - - - - - 49 8 Main menu - - - - - - - - - - - - - - - - - - - - - - - - - - - 53 Release R.1.3 UK 7 9 Service program - - - - - - - - - - - - - - - - - - - - - - - - 65 10 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - 69 11 Maintenance frequency - - - - - - - - - - - - - - - - - - - - 83 12 Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - 85 Page Release R.1.3 UK 9 1 Introduction 1.1 About the appliance 1.2 What to do if you smell gas Warning 1.3 Regulations 1gis g i s Page Page Release R.1.3 UK 13 2 Functioning of the appliance 2.1 Introduction 2.2 Functional description of the 14 Instruction Manual BFC 2gis 2.3 The appliances heating cycle 2.4 Protection for the Release R.1.3 UK 15 2.4.1 Water temperature protection 2.4.2 Gas control 2.4.3 Fan 2.4.4 Pressure switch 2gis 2.4.5 Ionisation rod 2.5 Safety of the instal- lation 2.5.1 Unvented installation 2.5.2 Vented installation 3 Installation Page Page Page Release R.1.3 UK 21 Table 3.4 Dimensions Page Release R.1.3 UK 23 Table 3.6 Gas data 3.5 Installation diagram Gas category data Page Page Page Page 28 Instruction Manual BFC 3.9.1 Concentric wall flue terminal Table 3.8 Concentric wall flue terminal specifications Release R.1.3 UK 29 3.9.2 Concentric roof flue terminal Table 3.9 Concentric roof flue terminal specifications 30 Instruction Manual BFC 3.10 Electrical connection Warning 3.10.1 Introduction 3.10.2 Preparation Table 3.10 Electrical connection block Release R.1.3 UK 31 3.10.3 Mains voltage 32 Instruction Manual BFC 3.10.4 Isolating Transformer 3.10.5 Continuous pump 3.10.6 program-controlled pump 3.10.7 Extra ON mode switch (Tank ON) Release R.1.3 UK 33 3.10.8 Connecting extra error signal (Alarm OUT) 3.11 Checking the supply pressure and burner pressure Page Release R.1.3 UK 35 3.12 Conversion to a different gas category 36 Instruction Manual BFC n Release R.1.3 UK 37 c Page Release R.1.3 UK 39 4 Filling and draining 4.1 Introduction 4.2 Filling the appliance 4.2.1 Filling unvented installations 4.2.2 Filling vented installations 4gis Release R.1.3 UK 41 4.3 Draining the 4.3.1 Draining unvented installations 4.3.2 Draining vented installations Page Release R.1.3 UK 43 5 The control panel 5.1 Introduction 5.2 Operating 44 Instruction Manual BFC 5gis 5.3 Explanation of the icons 5.4 ON/OFF switch of ThermoControl 5.5 Navigation buttons 5.6 PC connection. 6 Status of the appliance 6.1 Introduction 6.2 Operating modes 46 Instruction Manual BFC 6gis 6.3 Error conditions Release R.1.3 UK 47 6.4 Service condition Page Release R.1.3 UK 49 7 Starting up and shutting down 7.1 Introduction 7.2 Starting up 7.3 Shutting down 50 Instruction Manual BFC 7gis 7.3.1 Shut the appliance down for a brief period (OFF mode) 7.3.2 Disconnect the appliance from the mains 7.3.3 Shut the appliance down for a longer period Release R.1.3 UK 51 W S O D 7gis G O V and D S 8 Main menu 8.1 Introduction 8.2 Notational convention for menu-related instructions 54 Instruction Manual BFC 8.3 Switching into ON mode 8.4 Setting the water temperature 8.4.1 Setting the water temperature via SETPOINT MENU 8.4.2 Setting water temperature during ON mode Release R.1.3 UK 55 8.5 Week programme 8.5.1 Introduction 8.5.2 Starting up and shutting down the week program 8.5.3 Changing the appliances standard week program Page Release R.1.3 UK 57 8.5.4 Adding times to a week program 58 Instruction Manual BFC 8.5.5 Deleting times from a week program Page 60 Instruction Manual BFC 8.6 Extra period 8.6.1 Introduction 8.6.2 Programming an extra period Release R.1.3 UK 61 8.7 Settings 8.7.1 Introduction 8.7.2 Setting menu language 62 Instruction Manual BFC 8.7.3 Setting day and time 8.7.4 Displaying appliance specifications Page Page Release R.1.3 UK 65 9 Service program 9.1 Introduction 9.2 Setting the hysteresis 9.3 Displaying the error history 66 Instruction Manual BFC 9is 9.4 Displaying the appliance history 9.5 Display the selected 9.6 Setting the pump on/off 9.7 Setting the service interval Release R.1.3 UK 67 9.8 Setting the display contrast 9.9 Setting the backlight time 9.10 Setting the display scroll speed Page Release R.1.3 UK 69 10 Troubleshooting 10.1 Introduction Page Page Release R.1.3 UK 72 10.3 Troubleshooting table for displayed errors Page Page Page Page Page Page Page Page Page Page Release R.1.3 UK 83 gs 11 Maintenance frequency 11.1 Introduction 11.2 Determining service interval Page Release R.1.3 UK 85 12 Maintenance 12.1 Introduction cNote 12.2 Preparation for maintenance Page Page 12 s Release R.1.3 UK 89 13 Warranty (Certificate) 13.1 General warranty 13.2 Tank warranty 13.3 Installation and conditions of use 13.4 Exclusions 13 gis Page Appendices 92 Instruction Manual BFC Ais % A.2 Electrical diagram BFC A ! Page Index Release R.1.3 UK 95 IX Index A B C D IX gis N O P R