Contents
Design principles & operating sequence
Page
1.1
Principle components
3
1.2
Mode of operation (at rest)
3
1.3
Mode of operation (heating)
3
1.4
Mode of operation (Hot water)
3
1.5
Safety devices
3
Technical data
Page
2.1
Central heating
4
2.2
Domestic hot water
4
2.3
Gas pressures
4
2.4
Expansion vessel
4
2.5
Dimensions
4
2.6
Clearances
4
2.7
Connections
4
2.8
Electrical
4
2.9
Flue details (concentric)
4
2.9A Flue details (twin pipes)
4
2.9B Flue details (80/125)
4
2.10 Efficiency
4
2.11 Emissions
4
2.12 Pump duty
5
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 Showers
7
General requirements (EIRE)
Page
3A.1 Related documents
8
3A.2 Location of appliance
8
3A.3 Gas supply
8
3A.4 Flue system
8
3A.5 Air supply
8
3A.6 Water circulation
8
3A.7 Electrical supply
9
3A.8 Mounting on a combustible surface
9
3A.9 Timber framed buildings
9
3A.10 Inhibitors
9
3A.11 Showers
9
3A.12 Declaration of conformity
9
Installation
Page
4.1
Delivery
10
4.2
Contents
10
4.3
Unpacking
10
4.4
Preparation for mounting the appliance
10
4.5
Fitting the flue
10
4.6
Connecting the gas & water
14
4.7
Electrical connections
15
Commissioning
Page
5.1
Gas supply installation
16
5.2
The heating system
16
5.3
Initial filling of the system
16
5.4
Initial flushing of the system
16
5.5
Pre-operation checks
16
5.6
Initial lighting
16
5.7
Checking gas pressure & combustion analysis
16
5.8
Final flushing of the heating system
17
5.9
Setting the boiler operating temperature
17
5.10 Setting the system design pressure
17
5.11 Regulating the central heating system
17
5.12 Final checks
17
5.13 Instructing the user
17
Servicing
Page
6.1
General
18
6.2
Routine annual servicing
18
6.3
Replacement of components
18
6.4
Component removal procedure
18
6.5
Pump assembly
18
6.6
Safety valve
19
6.7
Lower automatic air release valves
19
6.8
Water pressure switch
19
6.9
Primary thermistor
19
6.10 Return thermistor
19
6.11 Printed circuit board
19
6.12 Gas valve
19
6.13 Electrodes and condense sensor
20
6.14 Flue fan & mixer
20
6.15 Burner
20
6.16 Main heat exchanger
20
6.17 Automatic by-pass
21
6.18 Expansion vessel
21
6.19 Condense trap removal
21
6.20 Flue collector removal
21
Checks, adjustments and fault finding
Page
7.1
Checking appliance operation
23
7.2
Appliance modes of operation
23
7.3
Appliance fan speed
24
7.4
Checking the CO
2
& adjusting the valve
24
7.5
Combustion analysis test
25
7.6
Checking the expansion vessel
25
7.7
External faults
25
7.8
Electrical checks
25
7.9
Fault finding
26
7.10 Component values & characteristics
26
7.11 Final fault codes
26
7.12 Boiler configuration
26
Wiring diagrams
Page
8.1
External wiring
27
8.2
Typical control applications
27
8.3
Other devices
27
8.4
Vokera twin-channel programmer
27
Exploded diagrams
Page
9.1
Table 1
29
9.2
Table 2
30
9.3
Table 3
31
9.4
Table 4
32
9.5
Table 5
33
L.P.G. instructions
Page
10.1 Related documents
34
10.2 Technical data
34
10.3 Converting the appliance gas type
34
10.4 Gas supply
34
10.5 Gas supply installation
34
10.6 Adjusting the gas valve
34
10.7 Appliance fan speed
35
Benchmark
36