Contents
Design principles & operating sequence
Page
1.1
Principle components
2
1.2
Mode of operation (at rest)
2
1.3
Mode of operation (Heating)
2
1.4
Safety devices
2
Technical data
Page
2.1
Central heating
3
2.2
Gas pressure
3
2.3
Expansion vessel
3
2.4
Dimensions
3
2.5
Clearances
3
2.6
Connections
3
2.7
Electrical
3
2.8
Flue details (concentric)
3
2.8A Flue details (twin pipes)
3
2.9
Efficiency
3
2.10 Emissions
3
2.11 Pump duty
4
General requirements (UK)
Page
3.1
Related documents
4
3.2
Location of appliance
4
3.3
Gas supply
5
3.4
Flue system
5
3.5
Air supply
5
3.6
Water circulation
5
3.7
Electrical supply
6
3.8
Mounting on a combustible surface
6
3.9
Timber framed buildings
6
3.10 Inhibitors
6
General requirements (EIRE)
Page
3A.1 Related documents
7
3A.2 Location of appliance
7
3A.3 Gas supply
7
3A.4 Flue system
8
3A.5 Air supply
8
3A.6 Water circulation
8
3A.7 Electrical supply
8
3A.8 Mounting on a combustible surface
8
3A.9 Timber framed buildings
8
3A.10 Inhibitors
8
3A.11 Declaration of conformity
8
Installation
Page
4.1
Delivery
9
4.2
Contents
9
4.3
Unpacking
9
4.4
Preparation for mounting the appliance
9
4.5
Fitting the flue
9
4.6
Connecting the gas & water
13
4.7
Electrical connections
14
Commissioning
Page
5.1
Gas supply installation
15
5.2
The heating system
15
5.3
Initial filling of the system
15
5.4
Initial flushing of the system
15
5.5
Pre-operation checks
15
5.6
Initial lighting
15
5.7
Checking the gas pressure & combustion analysis
15
5.8
Final flushing of the heating system
15
5.9
Setting the boiler operating temperature
15
5.10 Setting the system design pressure
16
5.11 Regulating the central heating system
16
5.12 Final checks
16
5.13 Instructing the user
16
Servicing
Page
6.1
General
17
6.2
Routine annual servicing
17
6.3
Replacement of components
17
6.4
Component removal procedure
17
6.5
Pump assembly
17
6.6
Safety valve
17
6.7
Bottom automatic air release valves
18
6.8
Water pressure sensor/gauge
18
6.9
Primary thermistors
18
6.10 Return thermistors
18
6.11 Printed circuit board
18
6.12 Gas valve
18
6.13 Electrode and condense sensor
18
6.14 Flue fan & mixer
19
6.15 Burner
19
6.16 Main heat exchanger
19
6.17 Automatic by-pass & DHW non-return valve
19
6.18 Expansion vessel
20
6.19 Fan transformer removal
20
6.20 Condense trap removal
20
6.21 Flue collector removal
20
Checks, adjustments and fault finding
Page
7.1
Checking appliance operation
21
7.2
Appliance mode of operation
21
7.3
Service mode & parameters
22
7.4
Adjusting mode & the gas valve
22
7.5
Combustion analysis test
23
7.6
Checking the expansion vessel
23
7.7
External faults
23
7.8
Electrical checks
23
7.9
Fault finding
24
7.10 Temporary fault codes
24
7.11 Final fault codes
24
Wiring diagrams
Page
8.1
External wiring
27
8.2
Typical control applications
27
8.3
Other devices
27
Exploded diagrams
Page
9.1
Table 1
30
9.2
Table 2
31
9.3
Table 3
32
9.4
Table 4
33
9.5
Table 5
34
L.P.G. instructions
Page
9.1
Related documents
35
9.2
Technical data
35
9.3
Converting the appliance gas type
35
9.4
Gas supply
35
9.5
Gas supply installation
35
9.6
Adjusting the gas valve
35
Benchmark
36-37