Immergas HE COMBI INTERNAL - User Manual

HE COMBI
INTERNAL /
EXTERNAL
INSTRUCTION
INSTALLATION
USER
MANUAL
Wall Mounted
Heating Only Boiler

Immergas HE COMBI INTERNAL Specifications

General

Fuel	Gas
Weight	32 kg
Max Working Pressure	3 bar
Mounting	Wall-mounted
Fuel Type	Natural Gas
Type	Combi
Connectivity	Optional Wi-Fi
Display	LCD

Summary

CE Declaration of Conformity

Boiler Installation

Installation Recommendations

Boiler designed for wall installation; heating environments and domestic hot water production.

Flue Terminal Positions

Guidelines for positioning flue terminals based on clearances for safe operation.

Anti-Freeze Protection

Boiler protection against freezing at -5°C and -15°C with specific measures.

Connections

Gas and hydraulic connection requirements, including system filling and safety.

Electrical Connection

Requirements for safe electrical connection, earthing, and power supply.

Remote Control (CARV2)

Details on connecting and using the optional remote control.

External Probe (Optional)

Information on connecting and using the optional external probe.

Immergas Flue Systems

Information on Immergas flue systems, resistance factors, and gasket installation.

Diaphragm Installation

Procedure for installing the diaphragm for correct boiler functioning.

Indoor Installation

Details on Type C configuration, horizontal and vertical intake-exhaust kits.

Intake;Exhaust Terminals

Assembly instructions for horizontal intake-exhaust terminals.

Vertical Intake;Exhaust Kit

Assembly instructions for vertical intake-exhaust kits.

System Filling and Startup

Procedures for filling the system, condensate trap, gas start-up, and boiler ignition.

Circulation Pump

Information on the circulation pump, its functions, and release procedure.

Boiler Components

Boiler Components

Diagram and key for identifying all boiler components.

Instructions for Use and Maintenance

Cleaning and Maintenance

Importance of periodical maintenance and recommended contracts for optimal performance.

General Warnings

Safety precautions for operation, user restrictions, electrical safety, and environmental hazards.

Control Panel

Explanation of the control panel features, LEDs, and selectors for operation.

Boiler Ignition

Step-by-step guide to boiler ignition and indicator light functions.

Fault and Anomaly Signals

Fault codes, LED indications, and troubleshooting for various boiler anomalies.

Remote Control Diagnostics

How the optional remote control displays information and error codes.

Boiler Shutdown

Procedure for safely shutting down the boiler for extended periods.

Restore Heating System Pressure

How to check and restore system water pressure to the correct level.

Draining the System

Procedure for draining the boiler's internal water circuits.

Anti-Freeze Protection

Information on anti-freeze functions and system protection against freezing.

Decommissioning

Steps for permanently decommissioning the boiler at the end of its life.

Initial Check

Hydraulic Diagram

Diagram illustrating the boiler's hydraulic system components and flow paths.

Wiring Diagram

Diagram showing the boiler's electrical connections and component wiring.

Troubleshooting

Common issues like gas smell, ignition blocks, combustion problems, and pressure faults.

Converting to Other Gas Types

Procedure for converting the boiler for different gas types (Natural Gas/LPG).

Checks After Gas Conversion

Checks to perform after converting the gas type to ensure correct operation.

Possible Gas Adjustments

How to adjust boiler nominal and minimum heat output using gas valve controls.

Programming the P.C.B.

Guide to programming boiler operation parameters using LEDs and selectors.

Heating Output

Explanation of boiler heating output and electronic modulation capabilities.

Heating Switch-on Timer

Information on the boiler's internal timer for central heating operation.

Ignition Delay Request

Adjusting ignition delay for specific system configurations with thermostats.

Minimum CH Output

How to select and set the minimum central heating output level.

Maximum Power

How to select and set the maximum heating output level.

Central Heating Ramp Timing

Boiler's ignition ramp feature for gradual heating from minimum to nominal power.

DHW Thermostat

Explanation of DHW thermostat settings (correlated vs. fixed) for hot water temperature.

Circulating Pump Function

Operational modes for the circulating pump in heating phase (intermittent/continuous).

Pump Function

Details on different pump operating modes and their selection.

Town Gas G110 - Industrial Gas

Setting for first family gases to adjust boiler operation.

Relay Functionality

Functions of Relays 1, 2, and 3 and their associated LED indications.

Automatic Slow Ignition

Function for controlled ignition and gradual gas delivery ramp.

Chimney Sweep Function

Function to force the boiler to max output for checking combustion parameters.

Pump Anti-Block Function

Function to prevent the pump from blocking during periods of inactivity.

Three-Way Anti-Block System

Function to prevent the three-way valve from blocking due to inactivity.

Radiators Anti-Freeze Function

Function to prevent radiators from freezing by activating the boiler.

P.C.B. Periodical Self-Check

Automatic self-check function of the Printed Circuit Board for diagnostics.

Yearly Control and Maintenance

Annual maintenance checks and procedures for the appliance to ensure optimal performance.

Casing Removal

Step-by-step guide to removing the boiler casing for maintenance access.

Variable Heat Power

Explanation of variable heat power and how to adjust it.

Variable Heat Power (Table and Diagram)

Table and diagram detailing variable heat power adjustments for different outputs.

Combustion Parameters

Table of combustion parameters for Natural Gas (G20) and LPG (G30).

Technical Data

Comprehensive technical specifications of the boiler, including performance and dimensions.

Boiler Registration

Installation Details

Section for recording installation details, gas type, and settings for future reference.

Commissioning Boiler Check List

Handover Instructions

Service Records