4
5
General information for installers, service engineers and users
page
3
1 Instructions for the user
page
5
1.1
Control panel
page
5
1.2
How the heating unit operates
page
6
1.2.1 Start-up
page
6
1.2.2 Operation
page
6
1.2.2.1 Management of a heating unit serving an high temperature CH zone + DHW supply (B and R models)
page
6
“Timer” position
page
6
“Comfort” position
page
6
“Night” position
page
6
“Anti-frost” position
page
6
“Summer” position
page
7
CENTRAL HEATING
page
7
EXCHANGER TEMPERATURE HOLDING
page
7
DOMESTIC HOT WATER
page
7
ANTI-FROST
page
7
PUMP ANTI-BLOCKING
page
7
ANTI-LEGIONELLA
page
7
EXCESSIVE HEAT MANAGEMENT
page
7
POST-CIRCULATION
page
8
1.2.2.2 Management of a heating unit serving a mixed water CH zone, an high temperature CH zone + DHW supply (BV and RV models)
page
8
“Timer” position
page
8
“Comfort” position
page
8
“Night” position
page
8
1.2.2.3 “SLIDING TEMPERATURE” operation
page
8
1.2.3 Electronic timer programming
page 10
1.2.4 “OPEN THERM” remote control programming
page 11
1.2.5 Heating unit shutdown
page 12
1.2.5.1 Burner shutdown
page 12
1.2.5.2 Shutdown due to overheating
page 12
1.2.5.3 Shutdown due to low water pressure
page 12
1.2.5.4 Shutdown due to malfunction of temperature probes
page 12
1.3
Maintenance
page 13
1.4
Information for the user
page 13
2
Technical features and dimensions
page 13
2.1
Technical features
page 13
2.2
Dimensions
page 14
2.3
Heating unit layout
page 15
2.4
Technical data of the heating units
page 16
2.5
Technical data of the burner
page 16
3
Instructions for the installer
page 17
3.1
Installation regulations
page 17
3.2
Installation
page 17
3.2.1 Packaging
page 17
3.2.2 Choosing where to install the heating unit
page 17
3.2.3 Installing the heating unit
page 17
3.2.4 Connection to the fuel oil mains supply
page 17
3.2.5 Room ventilation
page 17
3.2.6 Air intake and flue gas discharge system
page 17
3.2.7 Measuring combustion efficiency
page 19
3.2.8 Connecting to the power mains
page 19
3.2.9 Hydraulic connections
page 19
3.2.10 Room thermostat connection
page 19
3.2.11 “OPEN THERM” remote control installation (option)
page 20
3.2.12 External probe installation
page 20
3.3
Filling up the heating system
page 20
3.4
Starting up the heating unit
page 20
3.4.1 Preliminary checks
page 20
3.4.2 Switching on and off
page 20
3.4.3 Burner adjustment
page 20
3.5
Electric diagrams
page 21
4
Oil burner
page 29
4.1
Description
page 29
4.2
Installing the burner on the heating unit
page 29
4.3
Hydraulic system
page 29
4.4
Combustion adjustment
page 30
4.5
Removing the nozzle
page 30
4.6
Adjusting the electrodes
page 30
4.7
Replacing the control unit
page 31
4.8
Burner ignition cycle
page 31
4.9
Wiring diagram
page 32
4.10
Burner trouble-shooting
page 33
5
Testing the heating unit
page 34
5.1
Preliminary checks
page 34
5.2
Switching on and off
page 34
6
Maintenance
page 34
6.1
Maintenance schedule
page 34
7
Heating unit trouble-shooting
page 35
CONTENTS