IDEAL EVOMAX 2 Series

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Summary

Introduction and Safety

Safety Guidelines

Guidelines for safe operation and installation, emphasizing qualified personnel.

Electricity Supply Requirements

Details the required voltage, frequency, and fuse for the appliance's power connection.

Important Operational Notes

Crucial operational and safety points, including casing, clearances, and flammable materials.

Minimum Clearances for Servicing

Specifies required air gaps around the boiler for proper ventilation and servicing.

Boiler Operation and Controls

Control Panel Diagram

Visual representation of the boiler's control panel and its components.

To Light the Boiler

Step-by-step instructions for initiating the boiler's operation and ignition sequence.

Operating Status Displays

Displays of the boiler's current operational state, configuration, and system status.

System Settings and Configuration

Heating Circuits Configuration

Options to configure heating circuits, covering operating modes, temperatures, and schedules.

DHW Circuits Configuration

Settings for Domestic Hot Water (DHW) circuits, including operating modes and tank temperature control.

Installer Connections and Wiring

Mains Voltage Connections

Details for connecting the primary 230V 50Hz power supply and auxiliary outputs.

Volts Free Contacts

Configuration of multi-function relay outputs for pumps, indications, and fault signals.

PELV Connections

Low voltage connections for pump control, OpenTherm, and optional sensors like room temperature.

Troubleshooting Faults and Errors

Hardware Faults

Lists error types, descriptions, and codes for hardware-related faults like thermistors and sensors.

Temperature Supervision Faults

Details faults related to temperature monitoring, overheat conditions, and gradient supervision.

System Faults (Flame, Fan, Hydraulic)

Covers faults related to the combustion system, fan operation, and water flow.

Internal System Faults

Lists faults related to internal system operations, programming, and parameter settings.

General Information and Maintenance

Boiler Shutdown and Relighting Procedures

Procedures for safely shutting down and restarting the boiler for short or long periods.

Frost and Overheat Protection Features

Explains the boiler's built-in protection mechanisms against freezing and overheating.

Condensate Drain System Management

Details on the condensate trap and instructions for clearing blockages or frozen pipes.

Gas Leak Safety and Cleaning Instructions

Safety advice for gas leaks and instructions for routine cleaning of the boiler unit.

Summary

Introduction and Safety

Safety Guidelines

Guidelines for safe operation and installation, emphasizing qualified personnel.

Electricity Supply Requirements

Details the required voltage, frequency, and fuse for the appliance's power connection.

Important Operational Notes

Crucial operational and safety points, including casing, clearances, and flammable materials.

Minimum Clearances for Servicing

Specifies required air gaps around the boiler for proper ventilation and servicing.

Boiler Operation and Controls

Control Panel Diagram

Visual representation of the boiler's control panel and its components.

To Light the Boiler

Step-by-step instructions for initiating the boiler's operation and ignition sequence.

Operating Status Displays

Displays of the boiler's current operational state, configuration, and system status.

System Settings and Configuration

Heating Circuits Configuration

Options to configure heating circuits, covering operating modes, temperatures, and schedules.

DHW Circuits Configuration

Settings for Domestic Hot Water (DHW) circuits, including operating modes and tank temperature control.

Installer Connections and Wiring

Mains Voltage Connections

Details for connecting the primary 230V 50Hz power supply and auxiliary outputs.

Volts Free Contacts

Configuration of multi-function relay outputs for pumps, indications, and fault signals.

PELV Connections

Low voltage connections for pump control, OpenTherm, and optional sensors like room temperature.

Troubleshooting Faults and Errors

Hardware Faults

Lists error types, descriptions, and codes for hardware-related faults like thermistors and sensors.

Temperature Supervision Faults

Details faults related to temperature monitoring, overheat conditions, and gradient supervision.

System Faults (Flame, Fan, Hydraulic)

Covers faults related to the combustion system, fan operation, and water flow.

Internal System Faults

Lists faults related to internal system operations, programming, and parameter settings.

General Information and Maintenance

Boiler Shutdown and Relighting Procedures

Procedures for safely shutting down and restarting the boiler for short or long periods.

Frost and Overheat Protection Features

Explains the boiler's built-in protection mechanisms against freezing and overheating.

Condensate Drain System Management

Details on the condensate trap and instructions for clearing blockages or frozen pipes.

Gas Leak Safety and Cleaning Instructions

Safety advice for gas leaks and instructions for routine cleaning of the boiler unit.

Overview

Safety and Installation
Important Notes for Operation and Maintenance
Minimum Clearances for Servicing
Boiler Operation - Controls Diagram
To Light the Boiler
Operating Status
Settings - Heating Circuits
Settings - DHW Circuits
Faults
General Information

The EVOMAX 2 is a wall-mounted, room-sealed, super-efficient condensing boiler designed for commercial use. It features a full-sequence automatic spark ignition and fan-assisted combustion, ensuring reliable and efficient operation. Due to its high efficiency, the boiler produces condensate from the flue gases, which is drained through a plastic waste pipe at the bottom of the unit to a suitable disposal point. A condensate 'plume' may also be visible at the flue terminal during operation.

Safety and Installation:

Installation and maintenance of the EVOMAX 2 boiler must be carried out by a suitably qualified Gas Safe registered engineer in GB or a competent person in IE, in accordance with current Gas Safety (Installation & Use) Regulations or rules in force. Regular servicing, at least once a year, is essential for safe and economical operation. The appliance must be earthed and connected to a 230 V - 50 Hz supply with a 4 Amp fuse. Connection should be via a double-pole switch with a 3mm contact separation in both poles, serving only the boiler and system controls, or a 3-pin UNSWITCHED socket.

Important Notes for Operation and Maintenance:

The boiler must not be operated without the casing correctly fitted and forming an adequate seal. If installed in a compartment, the compartment must not be used for storage. Objects should not be stored around or on the boiler, and access must be kept clear at all times. Ventilation ducts, condensate pipework, grilles, or openings in the boiler room or compartment must not be obstructed. The boiler should not be turned off if it is to be left unattended in frosty weather. If a fault is suspected, the boiler must not be used until it has been corrected by a qualified engineer. Flammable materials or vapours should not be stored near the appliance.

This appliance can be used by children aged 8 years and above, and by persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, provided they have received supervision or instruction concerning safe use and understand the associated hazards. Children should not play with the appliance, and cleaning and user maintenance should not be performed by children without supervision. In cases of repeated or continuous shutdown, a qualified engineer should be called to investigate and rectify the condition, performing an operational test after each intervention. Only original manufacturer's parts should be used for replacement.

Minimum Clearances for Servicing:

To allow for servicing, clearances of 300mm (12") below, 25mm (1") at the sides, and 450mm (17 3/4”) at the front of the boiler casing must be maintained.

Boiler Operation - Controls Diagram:

The boiler is controlled via a user interface featuring a Rotary Knob, LCD Display Screen, Burner LED, Select Button, Back Button, and Reset Button.

Rotary Knob: Used to enter menus, highlight items, scroll through menus (anti-clockwise for up, clockwise for down), change parameter values, and scroll to error screens.
LCD Display Screen: Displays menus and status information.
Burner LED: Illuminates when the burner is lit.
Select Button: Enters menus, highlights the first menu item, selects highlighted menus/sub-menus/parameters, and stores adjusted parameter values.
Back Button: Returns to the previous menu layer, exits parameters without storing values, and goes back to the previous screen in guided assistants.
Reset Button: Resets active resettable (lockout) boiler module errors and returns to the normal operation screen.

To Light the Boiler:

For a stand-alone boiler, a master boiler in a cascade, or a master boiler with an extension module:

Set the operating mode in the plant menu to "Automatic."
Ensure there is a demand from external controls.
If no local heating or DHW circuits, set plant/operating mode to "Day."
If local heating circuits are present, set one (e.g., HC1 Boiler 1.1 or HC2 Boiler 1.2) operating mode to "Day."
If a local DHW circuit is present, set DHW/Operating mode/DHW1 Boiler 1 to "Day."
If an extension module is configured with Heating or DHW circuits, set their operating mode to "Day." The boiler will then commence the ignition sequence and supply heat. Controls should be set to the required operating mode. Note that not all menus and options are available depending on the access level.

Operating Status:

The status screens vary based on boiler configuration. Examples include:

Master non-cascade: Displays operation (e.g., Htg. with temp.), Flow Set point, and Flow temp.
Master / Non-cascade Slave: Displays operation (e.g., Htg. with capacity), Capacity Set point, Capacity, and Flow temp.
Master non-cascade, 0-10V control: Displays operation (e.g., Htg. with temp.), Voltage, Flow Set point, and Flow temp. Status screens are also available for heating and DHW circuits, showing details like OpenTherm status, operation mode, room set point, flow set point, and tank temperature.

Settings - Heating Circuits:

Each configured heating circuit has several settings:

Operating mode selection: Can be set to Standby, Time clock single day, Time clock multiple day, Day, or Night.
Room temperature: A temperature can be set for Day, Night, and Holiday periods.
Flow temperature: A maximum flow temperature can be set for Day, Night, and Holiday periods.
Settings (Installer access levels):
- Preheat: Can be enabled with a maximum time set.
- Heating Limit: Can be enabled with a limit temperature set.
- Room Temperature Switching Differential: Sets the differential when a room sensor is configured.
- Pump: Overrun time can be set. If controlled by 0-10V, additional speed parameters (Overrun speed, Maximum speed) can be set.
- Frost Protection: Can be triggered by flow temperature, outside temperature, or room temperature, with adjustable temperature and hysteresis settings.
Time clock: Each heating circuit can be programmed with three periods per day for single days (Monday-Sunday) or multiple days (Monday-Friday, Saturday-Sunday).
Holiday programme: Up to 8 holiday periods can be programmed with start and end dates.

Settings - DHW Circuits:

Each configured DHW circuit has similar settings:

Operating mode selection: Can be set to Standby, Time clock single day, Time clock multiple day, Day, or Night.
Tank temperature: A temperature can be set for Day, Night, and Holiday periods.
Settings (Installer access levels):
- One time boost: Enables a hot water tank charge to a set temperature at any time.
- Primary pump: Pump control parameters (Overrun time, Overrun speed, Minimum speed, Maximum speed) for the Hot Water Tank primary charge pump can be set.
- Legionella: Functionality can be set to a fixed weekday or a time interval, with an adjustable temperature.
- Frost Protection: Sets the minimum flow temperature for a frost protection demand.
Time clock: Similar to heating circuits, with three periods per day for single or multiple days.
Holiday programme: Up to 8 holiday periods can be programmed with start and end dates.

Faults:

When a fault occurs, the status display's title bar will alternate between the normal status and "Fault." The scroll knob can be used to display fault details (e.g., "Fault 39: Blocking Interlock, Function activated (controlled shutdown)"). Once rectified, faults can be reset by pressing the reset button. If multiple faults exist, a list will be shown, and each can be highlighted to view details.

General Information:

To Shut Down the Boiler: For short periods, set external controls to OFF, wait 4 minutes, then isolate the mains supply. For longer periods, set external controls to OFF, switch off electricity, and drain the entire system, including DHW.
To Relight the Boiler: Refill the system if drained, ensuring no air is present, then follow the "To light the boiler" procedure.
Frost Protection: The EVOMAX 2 has inbuilt frost protection for the boiler itself. Note that this may not protect remote parts of the system, where a separate frost thermostat may be needed. The boiler's frost protection will not function without a mains supply.
Boiler Overheat Thermostat: Overheating is detected by electrical sensors. If the boiler overheats, it will shut down and display "Overheat Lockout." Press the reset button to relight. If the fault recurs, turn off the boiler and consult a qualified engineer.
Condensate Drain: The appliance has a siphonic condensate trap system to reduce freezing risk. If the condensate pipe freezes, it may cause a gurgling noise and "Ignition Lockout." To unblock:
1. Locate the frozen blockage in the plastic pipe, likely at an exposed point, bend, or dip.
2. Apply a hot water bottle, microwaveable heat pack, or warm damp cloth to the area. Warm water can also be poured onto the pipe (DO NOT use boiling water).
3. Exercise caution as warm water may freeze and create hazards.
4. Once cleared, reset the appliance.
5. If the appliance fails to ignite, call a qualified engineer.
- Preventative solutions: During cold weather, set the boiler stat to maximum (return to original setting after cold spell). Place heating on continuous and turn room stat down to 15°C overnight or when unoccupied (return to normal after cold spell).
Escape of Gas: If a gas leak is suspected, contact your local gas supplier immediately. DO NOT search for leaks with a naked flame.
Cleaning: For normal cleaning, dust with a dry cloth. For stubborn marks, use a damp cloth and mild detergent. DO NOT use abrasive cleaning materials.