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Remeha Gas 3002
2
CONTENTS
Preface 3
1. Description of the boiler 4
2. Constructional data 5
2.1 General 5
2.2 Burners 5
3. Technical data and dimensions 6
4. Effi ciency information 7
4.1 Combustion effi ciency 7
4.2 Heat to water effi ciency 7
4.3 Standing losses 7
4.4 Annual effi ciency 7
5. Application data 8
5.1 Delivery and positioning 8
5.1.1 General 8
5.1.2 Location 8
5.1.3 Support 8
5.2 L.P.H.W. confi guration 8
5.2.1 Water temperature 8
5.2.2 Water pressure 8
5.2.3 Water circulation 10
5.2.4 Water treatment 10
5.2.5 Noise levels 10
5.3 Hydraulic circuits with Low Loss Header 11
5.3.1 Single boiler installation 11
5.3.2 Modular boiler installation 11
5.4 Installation instructions 11
5.5 Flue gas discharge and air supply 11
5.5.1 General 11
5.5.2 Requirements 12
5.5.3 Conventional room ventilated 12
5.5.4 Room sealed operation 13
6. Principle of the boiler operation 15
7. Control and safety equipment 16
7.1 General 16
7.2 Instrument panel 16
7.2.1 General 16
7.2.2 Layout of the instrument panel 16
7.3 The control unit 16
7.3.1 General 16
7.3.2 User level 16
7.3.3 Service level 17
7.3.4 Overview of the different menus 19
7.4 Standard electronic gas train 20
7.4.1 Schematic construction 20
7.4.2 Specifi cation 20
7.5 Functions 20
7.5.1 General 20
7.5.2 Flame protection (lock out) 20
7.5.3 Low-water protection 20
7.5.4 Temperature protection 20
7.5.5 Flue gas transport protection 20
8. Assembly guidelines and installation
instructions for the heating engineer 21
8.1 General 21
8.2 Water connections 21
8.3 Water pressure 21
8.4 Safety valve 21
8.5 Filling, refi lling and venting of
the installation 21
8.6 Boiler draining 21
9. Gas supply 22
9.1 General 22
9.2 Pressure test of the gas installation 22
9.3 Gas pressures 22
10. Electrical supply 23
10.1 General 23
10.2 Electrical connections 23
10.3 Electrical data 23
10.4 Boiler control 23
10.4.1 General 23
10.4.2 Modulating 23
10.4.3 High/low control 24
10.5 Connections 24
10.5.1 Other inputs 24
10.5.2 Blocking inputs 24
10.5.3 Locking inputs 24
10.5.4 Gas leak check 24
10.6 Outputs 25
10.6.1 Alarm output 25
10.6.2 Operating message 25
10.6.3 External gas valve 25
10.6.4 Shunt pump connection 25
10.6.5 Extra 230V connection 25
10.7 Building Ma na ge ment System 25
10.8 Frequency changer 25
10.9 Electrical wiring diagram 26
11. Commissioning 28
11.1 Technical data 28
11.2 Initial lighting 28
11.3 Shut down the boiler 31
12. Fault-Finding 31
12.1 General 31
12.2 Faults 31
13. Inspection and servicing 35
13.2 Servicing 35
13.1 General 35
2


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