General Information .......................................3
Meaning of Symbols ............................................................ 4
What to Check on a Regular Basis .................................. 4
Boiler Marking ....................................................................... 4
User’s Guide ........................................................5
Using the Control Panel .....................................................5
Product Description .............................................................6
Power variation (kW) relative to voltage ........................6
Technical Specifications ................................ 7
Hydraulic Characteristics ................................................... 7
Electrical Characteristics ................................................... 7
Recommendations for the prevention of corrosion
and scaling in Heating Systems ....................................... 8
Installation ........................................................9
Tools required for the installation .................................... 9
Package Contents .............................................................. 10
Handling instructions ........................................................ 10
Removing the boiler from the packaging .................... 10
Removal and Installation of the Access Panels ......... 10
Recommendations for the hydraulic installation .........11
Heating Connection ............................................................11
Heating Circuit + DHW (2 Circulating pumps) .............12
Safety instructions for the electrical installation ........13
Electrical Connections ....................................................... 13
Power Limitation ................................................................. 14
Sizing of supply wires ........................................................14
Control Circuit Terminal ..................................................... 14
Commissioning .................................................15
Safety Instructions for starting up ..................................15
Checks and setup before start up ..................................15
Filling the system ................................................................15
Starting the boiler ...............................................................16
Maintenance ..................................................... 17
Recommendations for the boiler maintenance ..........17
Boiler Shut-down for Maintenance ................................17
Draining the Boiler .............................................................. 17
Boiler maintenance .............................................................18
Checking the Safety Devices ..........................................18
Resetting the High Limit Safety Thermostat ...............18
Replacing the Heating Elements ....................................19
A1009188_664Y7900 • C
Table of Contents
