AIC NESTA 300 User Manual (English)

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installation

and maintenance

manual

FOR THE INSTALLER AND THE USER

300 kW

FLOOR — STANDING CONDENSING BOILER

A-136280 • A

NESTA

Table of Contents2
About Our Boilers3
Liabilities of the Manufacturer, the Installer and the End User4
About this Manual5
Safety Instructions6
Boiler Marking7
Package Contents7
Nesta 3007
Description7
General Description8
Frost Protection8
Safety Devices8
Optional Equipment8
Control Panel and Main Functions10
Symbols and Messages on the Control Panel11
Dimensions and Clearances12
Pecifications12
Performance and Efficiency Data14
Erp Data14
Combustion Data15
Electrical Data15
Hydraulic Data17
Pressure Drop Curve17
Flow Rate17
I Nstructions for the18
Safety Instructions for the User18
U Ser19
Periodic Checks19
Starting the Appliance20
Stopping the Appliance20
What to Do if21
Basic Settings22
Structure of Menus for the End User25
Safety Instructions for the Installation27
I Nstallation27
Handling the Product28
Unpacking the Product28
Installing and Preparing the Boiler28
Removing and Installing the Access Panels29
Requirements for the Hydraulic Connections30
Water Quality Requirements to Prevent Scaling and Corrosion in a Heating System31
Typical Hydraulic Connections - Heating Circuit33
Hydraulic Connections - Cascaded Boilers, with External Domestic Hot Water Tank and Plate Heat Exchanger34
Hydraulic Connections - Cascaded Boilers, with External Domestic Hot Water Tank and Low Loss Header35
Safety Instructions for the Chimney Connections36
Chimney Connection38
Air Intake Grid Installation in Chimney Systems39
Engineering the Chimney System40
Accessories40
Safety Instructions for the Gas Connection41
Gas Conversion42
Preparing the Boiler for Gas Conversion43
Adjustment of Fan Speeds44
Combustion Adjustment for Gas Conversion44
Safety Instructions for the Electrical Connections47
Connections47
Accessing the Low Voltage Terminal Strip and Electronic Board48
Accessing the High Voltage Terminal Strip49
Routing the Cables49
Wiring Diagram50
Ommissioning52
Safety Instructions before Start-Up52
Filling the System52
Start-Up and Combustion Adjustments53
M Aintenance54
Safety Instructions for Maintenance54
Maintenance Requirements55
Shutting down for Maintenance56
Draining the Boiler56
Restarting after Maintenance56
Cleaning the Condensate Pipe and Trap57
Removing and Installing the Fan and Air Adapter Assembly58
Removing and Installing the Air-Gas Mixer60
Removing and Installing the Ignition and Ionization Electrodes62
Removing and Installing the Burner63
Checking and Cleaning the Combustion Chamber64
Replacing the Gas Valve Filter64
Checking the Flue Gas (FPS) and Air (APS) Pressure Switches Operation65
Optional Modules66
I Nformation for the I Nstaller66
Web Server Module66
Cascading Module66
Boilers in a Cascade System67
Boiler Settings for the Installer70
Access Levels70
Commissioning Menu70
Menus and Settings70
Structure of Menus for the Installer70
Error Codes and Solutions74
Maintenance Messages79
Troubleshooting80
Installation Checklist82
Combustion Parameters - Log Sheet85
Water Parameters - Log Sheet86
Gas Conversion - Log Sheet87
D Eclaration of C Onformity88

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AIC NESTA 300 Specifications

General

Brand	AIC
Model	NESTA 300
Category	Boiler
Language	English

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AIC NESTA 300 User Manual

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