6 720 608 643
2
Index
Index
1Warning 3
2 Appliance details 4
2.1 Features 4
2.2 GWH C 800 ES Specifications
(Technical data) 4
2.3 Unpacking the GWH C 800 ES heater 5
2.4 General rules to follow for safe operation 6
2.5 Dimensions and minimum installation
clearances 7
3 Installation instructions 8
3.1 Tools required for installation 8
3.2 Introduction 8
3.3 Proper location for installing your heater 8
3.4 Heater placement and clearances 8
3.5 Mounting installation 8
3.6 Gas piping & connections 10
3.7 Water connections 12
3.8 Water quality 12
3.9 Recirculation application 13
3.10 Filling the condensate trap 14
3.11 Combustion air requirements 15
3.12 Venting 16
3.13 Measuring gas pressure 26
4 Electrical connections 27
4.1 Electrical power supply 27
4.2 Position of the fuses in control unit 27
5 Operation instructions 28
5.1 Description LCD Display 28
5.2 For your safety read before operating
your water heater 29
5.3 Power 29
5.4 Temperature selection 29
5.5 Use of optional remote control accessory
(part no. TSTAT2) 30
5.6 Operation 30
5.7 Reset button 30
5.8 Program button 30
5.9 Locked condition 30
6 Maintenance and service 31
6.1 Annual maintenance 31
6.2 Winterizing for seasonal use 31
6.3 Mineral scale build-up 32
6.4 Condensing heat exchanger unit 33
6.5 Adjusting CO2 33
6.6 Program values 35
6.7 Control board diagnostics 36
7 Troubleshooting 37
7.1 Introduction 37
7.2 Burner does not ignite when hot water
is turned ON 37
7.3 Water is too hot 37
7.4 Water is not hot enough 37
7.5 Low water flow/pressure 38
7.6 Hot water temperature fluctuates at tap 38
7.7 Noisy burner/heater during operation 38
8 Problem solving 40
8.1 Error code diagnostics 40
9 Electrical diagram 45
10 Sensor resistance charts 46
11 GWH C 800 ES Functional scheme 48
12 Interior components diagram
and parts list 49
12.1 Interior components 49
12.2 Components diagram 51
13 Protecting the environment 58
14 Limited Warranty 59
To Next Page
Loading...
