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Contents
Design principles & operating sequence Page
1.1 Principle components 3
1.2 Mode of operation (at rest) 3
1.3 Mode of operation 3
1.4 Safety devices 3
Technical data Page
2.1 Central heating 4
2.2 Gas pressures 4
2.3 Dimensions 4
2.4 Clearances 4
2.5 Connections 4
2.6 Electrical 4
2.7 Flue details (concentric) 4
2.7A Flue details (twin pipes) 4
2.7B Flue details (80/125) 4
2.8 Effi ciency 4
2.9 Emissions 4
General requirements (UK) Page
3.1 Related documents 6
3.2 Location of appliance 6
3.3 Gas supply 6
3.4 Flue system 6
3.5 Air supply 6
3.6 Water circulation 6
3.7 Electrical supply 7
3.8 Mounting on a combustible surface 7
3.9 Timber framed buildings 7
3.10 Inhibitors 7
3.11 Appliance pipework confi guration 7
General requirements (EIRE) Page
3A.1 Related documents 9
3A.2 Location of appliance 9
3A.3 Gas supply 9
3A.4 Flue system 9
3A.5 Air supply 9
3A.6 Water circulation 9
3A.7 Electrical supply 9
3A.8 Mounting on a combustible surface 9
3A.9 Timber framed buildings 9
3A.10 Inhibitors 10
3A.11 Appliance pipework confi guration 10
3A.12 Declaration of conformity 10
Installation Page
4.1 Delivery 11
4.2 Contents 11
4.3 Unpacking 11
4.4 Preparation for mounting the appliance 11
4.5 Fitting the fl ue 11
4.6 Connecting the gas & water 15
4.7 Electrical connections 16
Commissioning Page
5.1 Gas supply installation 18
5.2 The heating system 18
5.3 Initial fi lling of the system 18
5.4 Initial fl ushing of the system 18
5.5 Pre-operation checks 18
5.6 Initial lighting 18
5.7 Checking gas pressure & combustion analysis 18
5.8 Final fl ushing of the heating system 19
5.9 Setting the boiler operating temperature 19
5.10 Setting the system design pressure 19
5.11 Final checks 19
5.12 Instructing the user 19
Servicing Page
6.1 General 20
6.2 Routine annual servicing 20
6.3 Replacement of components 20
6.4 Component removal procedure 20
6.5 Automatic air release valve 20
6.6 Primary thermistor 20
6.7 Return thermistor 20
6.8 Printed circuit board 21
6.9 Gas valve 21
6.10 Injectors 21
6.11 Electrodes and condense sensor 21
6.12 Flue fan & burner assembly 22
6.13 Main heat exchanger 23
6.14 Condense trap removal 23
6.15 Flue collector removal 23
Checks, adjustments and fault fi nding Page
7.1 Checking appliance operation 24
7.2 Appliance modes of operation 24
7.3 Appliance fan speeds 24
7.4 Checking the CO
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& adjusting the valve 25
7.5 Combustion analysis test 26
7.6 External faults 26
7.7 Electrical checks 26
7.8 Fault fi nding 26
7.9 Component values & characteristics 27
7.10 Fault codes 27
Wiring diagrams Page
8.1 External wiring 28
8.2 Typical control applications 28
8.3 Other devices 28
L.P.G. instructions Page
10.1 Related documents 31
10.2 Technical data 31
10.3 Converting the appliance gas type 31
10.4 Gas supply 31
10.5 Gas supply installation 31
10.6 Adjusting the gas valve 31
10.7 Combustion analysis test 32
10.8 Appliance fan speeds 32
Commissioning checklist 33
Benchmark 40-41
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