2
Alpha 240XP and 240XE - Contents/Introduction
CONTENTS
1
Introduction ....................................... 2
2
Technical data ................................... 3
3
General boiler information .................. 7
4
Installation ......................................... 11
5
Commissioning ................................. 16
6
Boiler operation ................................. 18
7
Routine servicing ............................... 19
8
Component replacement ................... 21
9
Wiring diagrams ................................ 34
10 Fault finding ...................................... 38
11 Short parts list ................................... 43
12 Service history .................................. 44
The Alpha 'X' Range of boilers are wall mounted, fan assisted room-sealed combination boilers. Heat output is controlled by a
modulating gas valve.
The boilers, providing both central heating and domestic hot water at mains pressure, are designed for use with a fully
pumped, sealed and pressurised heating system using only Natural Gas.
The boilers are supplied with a pump, diverter valve, pressure relief valve, expansion vessel and pressure gauge fully
assembled and tested.
As supplied, the Alpha 240XP and 240XE boilers will automatically modulate to provide central heating outputs between 9.3
and 23.3 kW (31 700 and 79 500 Btu/h).
The maximum output available for domestic hot water is 23.3 kW (79 500 Btu/h), capable of providing 9.5 litres/min with a
temperature rise of 35°C.
IMPORTANT
It is the law that all gas appliances are installed by a competent person, ie CORGI registered personnel, in accordance with
the following recommendations:-
Gas Safety (Installation and Use) Regulations
All relevant Building Regulations issued by the Department of the Environment
Building Standards (Scotland) (Consolidation) Regulations issued by the Scottish Development Department
Local Water Bye Laws
Health & Safety Document No. 635 (The Electricity At Work Regulations 1989)
The installation should also be in accordance with the following British Standard Codes of Practice:-
BS 5440:1:1990
Flues
BS 5449:1990
Forced circulation hot water systems
BS 5546:1990
Installation of hot water supplies for domestic purposes
BS 6700:1987
Design, installation, testing and maintenance of services supplying water
BS 6798:1987
Installation of gas fired hot water boilers
BS 6891:1989
Gas installation
BS 7593:1992
Code of Practice for treatment of water in heating systems
BS 7671:1992
Requirements for electrical installations, IEE Wiring Regulations
If installation is in a timber framed building, refer to the British Gas publication 'Guide for Gas Installations in Timber Frame
Housing' reference DM2.
This appliance meets the requirements of IP44, ie degree of protection against moisture.
Failure to install this appliance correctly could lead to prosecution. It is in your own interest and that of safety to ensure that the
law is complied with.
Manufacturer's instructions must NOT be taken in anyway as over-riding statutory obligations.
1
INTRODUCTION
Summary of Contents for Alpha 240XE
Page 35: ...35 Alpha 240XP and 240XE Wiring Diagrams 9 2 ILLUSTRATED WIRING DIAGRAM Alpha 240XE ...
Page 36: ...36 Alpha 240XP and 240XE Wiring Diagrams 9 3 FUNCTIONAL FLOW WIRING DIAGRAM Alpha 240XP ...
Page 37: ...37 Alpha 240XP and 240XE Wiring Diagrams 9 4 FUNCTIONAL FLOW WIRING DIAGRAM Alpha 240XE ...
