Technical data

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 or hot water request) 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 3
2.9 Efficiency 3
2.10 Adjusting operating parameters 3
2.11 Emissions 3
2.12 Pump duty 4
General requirements (UK) Page
3.1 Related documents 5
3.2 Location of appliance 5
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 Condensate disposal 6
3.11 Inhibitors 6
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 Condensate disposal 9
3A.11 Inhibitors 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 13
4.7 Condensate outlet 13
4.8 Automatic air release valve 14
4.9 Electrical connections 14
4.10 Casing removal 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 Final flushing of the heating system 16
5.8 Inhibitors 16
5.9 Appliance operating parameters 16
5.10 Parameters 3 & 4 16
5.11 Information mode 16
5.12 Setting the system design pressure 17
5.13 Regulating the central heating system 17
5.14 Checking dynamic gas pressure 17
5.15 Final checks 17
5.16 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 head 18
6.6 Safety valve 18
6.7 Automatic air release valve 18
6.8 Pressure gauge 18
6.9 NTC thermistors (temperature sensors) 19
6.10 Printed circuit board (PCB) 19
6.11 Gas valve 19
6.12 Fan 19
6.13 Burner 19
6.14 Electrode 20
6.15 Injector 20
6.16 Automatic by-pass assembly 20
6.17 Condense trap 20
6.18 Condense pressure switch 20
6.19 Combustion cover 20
6.20 Expansion vessel 21
6.21 Input & status PCB 21
Checks, adjustments and fault finding Page
7.1 Checking appliance operation 22
7.2 Appliance mode of operation 22
7.3 Service paameters (5-42) 22
7.4 Adjusting the gas valve 22
7.5 1
st
digit status code 24
7.6 Temporary fault codes 24
7.7 Final fault codes 24
7.8 Diagnostic recall 24
7.9 Checking the expansion vessel 24
7.10 External faults (installation) 25
7.11 Electrical checks 25
7.12 Fault finding 25
Wiring diagrams Page
8.1 Installation of Vokera time clock 31
8.2 External controls important 31
Exploded diagrams Page
9.1 Table 1 36
9.2 Table 2 37
9.3 Table 3 38
9.4 Table 4 39
9.5 Table 5 40
L.P.G. instructions Page
10.1 Technical data 41
10.2 Related documents 41
10.3 Gas supply 41
10.4 Gas supply installation 41
10.5 Adjusting the gas valve 41