1.1 Introduction......................................................................................................................................... 156

1.2 Control panel ...................................................................................................................................... 156

1.3 Connection to the power supply, switching on and off ....................................................................... 157

1.4 Adjustments........................................................................................................................................ 158

2 Installation ............................................................................................................................ 162

2.1 General Instructions ........................................................................................................................... 162

2.2 Place of installation ............................................................................................................................ 162

2.3 Plumbing connections ........................................................................................................................ 162

2.4 Gas connection .................................................................................................................................. 165

2.5 Electrical connections......................................................................................................................... 165

2.6 Fume ducts......................................................................................................................................... 167

2.7 Condensate drain connection............................................................................................................. 173

3 Service and maintenance.................................................................................................... 174

3.1 Adjustments........................................................................................................................................ 174

3.2 Commissioning ................................................................................................................................... 185

3.3 Maintenance ....................................................................................................................................... 186

3.4 Troubleshooting.................................................................................................................................. 194

4 Technical data and characteristics .................................................................................... 197

4.1 Dimensions and connections ............................................................................................................. 197

4.2 General view ...................................................................................................................................... 199

4.3 Hydraulic circuit .................................................................................................................................. 199

4.4 Technical data table ........................................................................................................................... 200

4.5 Diagrams ............................................................................................................................................ 202

4.6 Wiring diagram ................................................................................................................................... 202

155

cod. 3541C670 - Rev. 00 - 05/2018