Need help?Do you have a question about the Immergas EOLO STAR 24 3 E and is the answer not in the manual?
Essential advice for safe and proper use, maintenance, and installation.
Statement of compliance with European Community Directives for the boiler model.
Advice on boiler placement, clearances, and preparation for installation.
Detailed dimensions, recessing kit specs, and connection points.
Standard and optional features to protect the boiler from freezing conditions.
Guidance on flue systems, outdoor, and recessed frame installation configurations.
Procedures for regular cleaning, maintenance, and general warnings for boiler operation.
Explanation of control panel buttons, display indicators, and operating modes.
Identification of error codes, their meanings, and initial troubleshooting steps for malfunctions.
Steps for initial boiler start-up, hydraulic connections, and system pressure checks.
Electrical wiring diagrams, connection points, and guidance for common technical issues.
How to program the PCB, select gas types, and adjust operational parameters.
Procedures for annual appliance checks, casing removal, and safety device verification.
Essential advice for safe and proper use, maintenance, and installation.
Statement of compliance with European Community Directives for the boiler model.
Advice on boiler placement, clearances, and preparation for installation.
Detailed dimensions, recessing kit specs, and connection points.
Standard and optional features to protect the boiler from freezing conditions.
Guidance on flue systems, outdoor, and recessed frame installation configurations.
Procedures for regular cleaning, maintenance, and general warnings for boiler operation.
Explanation of control panel buttons, display indicators, and operating modes.
Identification of error codes, their meanings, and initial troubleshooting steps for malfunctions.
Steps for initial boiler start-up, hydraulic connections, and system pressure checks.
Electrical wiring diagrams, connection points, and guidance for common technical issues.
How to program the PCB, select gas types, and adjust operational parameters.
Procedures for annual appliance checks, casing removal, and safety device verification.
The Immergas EOLO STAR 24 3 E is a wall-mounted gas boiler designed for heating environments and producing domestic hot water. It can be installed outdoors in partially protected areas or indoors, with variations in classification depending on the installation type. For outdoor installation in partially protected areas, it can be configured with an Ø80 exhaust terminal (Type C) or with concentric terminals and separators (Type C), with the upper casing being recommended but not obligatory for the latter. For outdoor installation using a recessed frame, it utilizes spacers under the side plugs of the sealed chamber with concentric or other suitable pipes for air intake and fume exhaustion (Type C). Indoor installation can be done without the two intake caps and with an upper casing, using an Ø80 exhaust terminal (Type B22), or without an upper casing, using concentric terminals and separators (Type C).
The boiler operates to heat water below boiling temperature at atmospheric pressure. It includes an antifreeze function that activates the pump and burner when the system water temperature in the boiler falls below 4°C, protecting against freezing down to -5°C, provided it is correctly connected to gas and electricity, powered constantly, and free from ignition blocks or faulty components. For protection down to -15°C, an optional antifreeze kit with two electric heating elements and a control thermostat can be installed, along with adding a high-quality antifreeze liquid to the heating circuit. The boiler features electronic modulation to adapt its power output to the heating demands of the home, operating within a variable gas pressure field between minimum and maximum heating power. It also incorporates an electronic timing device to prevent frequent burner ignitions during the heating phase, adjustable via parameter P7. A pump anti-block function activates the pump for 30 seconds every 24 hours in summer mode and every 3 hours in winter mode to prevent blockages. The "Anti-Extruder function" (parameter P3) reduces the heating temperature to 57°C if domestic hot water circulation is detected in heating mode. A "Domestic hot water post circulation function" (parameter P4) keeps the pump on for 2.5 seconds in winter and 1.5 seconds in summer after domestic hot water flow to reduce lime scale formation. The "Chimney sweep function" forces the boiler to operate at maximum output for 15 minutes, allowing technicians to check combustion parameters. The boiler also performs a P.C.B. periodical self-check every 18 hours in heating or standby mode, or within 10 minutes after domestic hot water withdrawal.
The boiler's control panel (Fig. 2-1) allows users to:
To Next Page
General