2
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
2
& 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