Table Of Contents - Bosch Greentherm T9800 SEC 199 Installation And Operating Instructions Manual

2 | Table of contents

Table of contents
1 Key to symbols and safety instructions . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . 3
2 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Specifications (Technical data) . . . . . . . . . . 8
3.3 Unpacking the heater . . . . . . . . . . . . . . . . . 10
3.4 General rules to follow for safe operation . 11
3.5 Dimensions and minimum installation
clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Installation tools . . . . . . . . . . . . . . . . . . . . . 13
4.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Proper location for installing your heater . 13
4.4 Heater placement and clearances . . . . . . . 14
4.5 Hanging appliance on the wall . . . . . . . . . . 14
4.6 Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.7 Factory regulation . . . . . . . . . . . . . . . . . . . . 29
4.8 Gas piping & connections . . . . . . . . . . . . . 30
4.9 Water quality . . . . . . . . . . . . . . . . . . . . . . . . 33
4.10 Water connections . . . . . . . . . . . . . . . . . . . 34
4.11 Domestic hot water recirculation
with external pump . . . . . . . . . . . . . . . . . . . 35
4.12 Space heating applications . . . . . . . . . . . . . 36
4.13 Measuring gas pressure . . . . . . . . . . . . . . . 39
5 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . 39
5.1 Electrical power supply . . . . . . . . . . . . . . . . 39
5.2 Position of the fuses in control unit . . . . . . 40
6 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . 40
6.1 For your safety read before operating
your water heater . . . . . . . . . . . . . . . . . . . . 41
6.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.3 Error code reset . . . . . . . . . . . . . . . . . . . . . . 41
6.4 Temperature selection . . . . . . . . . . . . . . . . 41
6.5 Information /Adjustments menu . . . . . . . . 43
6.6 Service menu - AU Technical Settings . . . . 46
6.7 Water valves calibration . . . . . . . . . . . . . . . 48
6.8 Gas type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 720 816 815 (2018/08)
7 Maintenance and service . . . . . . . . . . . . . . . . . . . . . 50
7.1 Annual maintenance . . . . . . . . . . . . . . . . . . 50
7.2 Winterizing for seasonal use . . . . . . . . . . . . 50
7.3 Mineral scale build-up . . . . . . . . . . . . . . . . . 51
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.2 Burner does not ignite when a hot water
faucet is opened . . . . . . . . . . . . . . . . . . . . . .52
8.3 Water is too hot . . . . . . . . . . . . . . . . . . . . . . 52
8.4 Water is not hot enough . . . . . . . . . . . . . . . 52
8.5 Low water flow/pressure . . . . . . . . . . . . . . 52
8.6 Hot water temperature fluctuates at tap . . 53
8.7 Noisy burner/heater during operation . . . . 53
8.8 Error codes C1, C2, CF and/or CE . . . . . . . 53
8.9 Error codes EA and/or EC . . . . . . . . . . . . . . 53
8.10 Manifold gas pressure . . . . . . . . . . . . . . . . . 54
8.11 Adjusting Gas/Air flow . . . . . . . . . . . . . . . . 54
8.12 CO emissions check . . . . . . . . . . . . . . . . . . 59
9 Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9.1 Error code diagnostics . . . . . . . . . . . . . . . . 60
10 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11 Sensor resistance charts . . . . . . . . . . . . . . . . . . . . . 67
12 Interior components diagram . . . . . . . . . . . . . . . . . 68
12.1 Interior components . . . . . . . . . . . . . . . . . . 68
13 Protecting the environment . . . . . . . . . . . . . . . . . . 69
14 Installer Checklist to be completed by installer
upon installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Greentherm T9800 SE 160/199 | SEC 199