IDEAL LOGIC COMBI ESP1 Series - User Manual

USER GUIDE
LOGIC COMBI ESP1
24 30 35
When replacing any part on this appliance, use only spare parts that you can be assured conform to the safety and performance
specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Ideal.
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where you can download the relevant information in PDF format.

Summary

1. Introduction

Safety

Current Gas Safety (Installation & Use) Regulations or rules in force.

Electricity Supply

This appliance must be earthed. Supply: 230 V ~ 50 Hz. The fusing should be 3A.

Important Notes

2. Boiler Operation

To Start the Boiler

Control of Water Temperature

Boiler Frost Protection

How the boiler protects itself and the system from freezing.

3. System Water Pressure

To Top up the System

4. Condensate Drain

Defrosting Instructions

5. General Information

Escape of Gas

Procedure to follow if a gas leak is suspected.

6. Points for the Boiler User

Troubleshooting

Troubleshooting guide for common no hot water or no heating issues.

7. Normal Operation Display Codes

8. Fault Codes

Fault Codes and Actions

List of fault codes, their descriptions, and recommended actions.

Overview

1. Safety and Installation
2. Boiler Operation
3. Control of Water Temperature
4. Operation Modes
5. Efficient Heating System Operation
6. Boiler Frost Protection
7. Boiler Restart
8. Mains Power Off
9. System Water Pressure
10. Condensate Drain
11. General Information
12. Maintenance
13. Troubleshooting
14. Normal Operation Display Codes
15. Fault Codes

The Ideal Logic Combi ESP1 is a high-efficiency condensing combination boiler designed to provide both central heating and instantaneous domestic hot water. This appliance features full-sequence automatic 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 to a suitable disposal point via a plastic waste pipe at the base of the unit. A condensate 'plume' may also be visible at the flue terminal during operation.

Safety and Installation:

For your safety and to comply with regulations, this boiler must be installed by a Gas Safe Registered Engineer in the UK, or a Registered Gas Installer (RGII) in Ireland, in accordance with current regulations and electrical installation rules. It is crucial to follow the instructions in this booklet for safe and economical operation. The appliance must be earthed and requires a 230 V ~ 50 Hz electricity supply, with a 3A fuse. The casing must always be correctly fitted and sealed for proper operation. If installed in a compartment, it must not be used for storage. If a fault is suspected, the boiler must not be used until repaired by a qualified engineer. Under no circumstances should any sealed components be tampered with. This appliance can be used by children aged 8 and above, and persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, provided they receive supervision or instruction on safe use and understand the hazards. Children should not play with the appliance, and cleaning or user maintenance should not be performed by unsupervised children.

Boiler Operation:

To start the boiler, ensure the electricity supply is off, set the mode knob to 'BOILER OFF', and both the Domestic Hot Water (DHW) and Central Heating (CH) temperature knobs to 'MAX'. Confirm all hot water taps are closed. Switch on the electricity and external controls (programmer, room thermostat). Finally, set the mode knob to 'Winter' (snowflake icon). The boiler will then initiate its ignition sequence and supply heat if required. The boiler status display shows codes like '00' for standby, a radiator icon for central heating, a tap icon for domestic hot water, and 'FP' for frost protection. The burner 'on' indicator illuminates when the burner is active. If the boiler fails to ignite after five attempts, fault code 'L2' will be displayed.

Control of Water Temperature:

The domestic hot water temperature is adjustable via the DHW temperature knob (A), with a maximum of 65°C. Flow rates and temperature rise will vary, requiring tap adjustment: lower flow rates result in higher temperatures. The central heating radiator temperature is controlled by the CH temperature knob (B), with a maximum of 80°C. An economy setting 'e' is available for efficient heating.

Operation Modes:

• Winter Conditions: Set the mode knob to 'Winter' (snowflake icon). The boiler will prioritize domestic hot water while also supplying heat to radiators.
• Summer Conditions: Set the mode knob to 'Summer' (sun icon). Ensure central heating demand on external controls is off.
• Boiler Off: Set the mode knob to 'BOILER OFF'. The mains power supply should remain on for frost protection.

Efficient Heating System Operation:

The boiler automatically adjusts its output to match heat demand, reducing gas consumption. For optimal efficiency, turn the central heating temperature knob (B) to the 'e' position or lower. In colder periods, it may be necessary to increase this setting. Reducing the room thermostat by 1°C can save up to 10% on gas. If weather compensation is fitted, the CH temperature knob controls room temperature; adjust it to achieve the desired setting, and the system will automatically maintain it.

Boiler Frost Protection:

The boiler has built-in frost protection that operates in all modes, provided the power supply is on. If the boiler water temperature drops below 5°C, the boiler will activate to prevent freezing. This protection does not guarantee protection for other parts of the system. If a system frost thermostat is installed, the boiler must be in 'Winter' mode for system-wide frost protection. If no system frost protection is available and frost is likely during a short absence, leave heating controls or the programmer on at a reduced temperature. For longer periods, draining the entire system is recommended.

Boiler Restart:

To restart the boiler after a fault code (see section 8), press the restart button (G). The boiler will repeat its ignition sequence. If it still fails to start, consult a Gas Safe Registered Engineer or RGII.

Mains Power Off:

To completely remove power from the boiler, turn off the mains power switch.

System Water Pressure:

The system pressure gauge indicates the central heating system pressure. If the pressure falls below 1-2 bar, it may indicate a water leak. The boiler will not operate if the pressure drops below 0.3 bar. To repressurize the system:

1. Ensure both blue handles (A & B) are closed.
2. Remove and retain the plug and cap.
3. Connect the filling loop to the Domestic Hot Water (DHW) inlet (A) and tighten both ends.
4. Turn the DHW Inlet blue handle (A) to the horizontal position.
5. Gradually turn the filling loop handle (B) to the horizontal position, ensuring no leaks.
6. Wait for the pressure gauge to reach 1 to 1.5 bar.
7. Turn valves A & B back to the closed position.
8. Disconnect the filling loop and replace the cap and plug. Some water spillage may occur.

Condensate Drain:

The appliance has a siphonic condensate trap system to reduce the risk of freezing. If the condensate pipe freezes, follow these instructions:

• If you are not competent, call a Gas Safe Registered Installer.
• If competent, proceed with care, avoiding hot utensils and thawing pipework above ground.
• A blockage may cause a gurgling noise and an "L2" fault code.
• To unblock: locate the frozen section (likely at an exposed point, bend, or dip) and apply a hot water bottle, microwaveable heat pack, or warm damp cloth. Warm water can also be poured over the pipe. DO NOT use boiling water.
• Exercise caution with warm water as it may freeze and cause other hazards.
• Once clear, restart the appliance. If it fails to ignite, call a Gas Safe Registered Engineer.
• Preventative solutions: During cold weather, set the central heating temperature knob (B) to maximum (return to original setting after the cold spell). Place heating on continuous and turn the room thermostat down to 15°C overnight or when unoccupied.

General Information:

• Boiler Pump: The pump performs a brief self-check every 24 hours.
• Minimum Clearances: Allow 165mm above, 100mm below, 2.5mm at the sides, and 450mm at the front for servicing. Bottom clearance can be reduced to 5mm with an easily removable panel, ensuring the pressure gauge is visible and 100mm clearance for servicing.
• Expansion: If a water meter is fitted, a domestic hot water expansion vessel kit may be required. Contact a Gas Safe Registered Engineer or RGII.
• Escape of Gas: If a gas leak is suspected, contact the National Gas Emergency Service immediately (0800 111 999). Ensure all naked flames are extinguished, electrical switches are not operated, and all windows and doors are opened.

Maintenance:

For normal cleaning, dust with a dry cloth. For stubborn marks, wipe with a damp cloth and finish with a dry cloth. DO NOT use abrasive cleaning materials. The appliance should be serviced at least once a year by a Gas Safe Registered Engineer or RGII.

Troubleshooting:

The manual provides flowcharts for troubleshooting 'No Hot Water', 'No Central Heating', and 'No Hot Water or Central Heating' scenarios. These guides direct users to check mains power, mode knob settings, programmer settings, room thermostat, and fault codes. If '00' is displayed, contact Ideal Customer Services if under warranty, or a Gas Safe Registered Engineer/RGII if out of warranty.

Normal Operation Display Codes:

• 00: Standby, awaiting CH or DHW call.
• 54 (radiator icon): CH call, desired temperature reached.
• 54 (tap icon): DHW call, desired temperature reached.
• 54 (radiator icon, flashing): Operating in central heating mode.
• 54 (tap icon, flashing): Operating in domestic hot water mode.
• FP: Operating in frost protection.
• --: Mode knob in off position; rotate clockwise for CH/DHW.

Fault Codes:

The manual lists various fault codes with descriptions and actions:

• F1 (Low Water Pressure): Check system pressure (1-1.5 bar); repressurize (Section 3). If issue persists, contact Ideal or a qualified engineer.
• F2 (Flame Loss): Check other gas appliances for supply; ensure gas supply is on at meter. If issue persists, contact Ideal or a qualified engineer.
• F3 (Fan Fault): Restart appliance. If issue persists, contact Ideal or a qualified engineer.
• F4/L4 (Flow Thermistor): Restart appliance. If issue persists, contact Ideal or a qualified engineer.
• F5/L5 (Return Thermistor): Restart appliance. If issue persists, contact Ideal or a qualified engineer.
• F6 (Outside Sensor Failure): Restart appliance. If issue persists, contact Ideal or a qualified engineer.
• F7 (Low Mains Voltage): Contact a qualified electrician or electricity provider.
• F9/L9 (Unconfigured PCB): Contact Ideal or a qualified engineer.
• L1 (Flow Temperature Overheat or No Water Flow): Check system pressure (1-1.5 bar); repressurize (Section 3). If issue persists, contact Ideal or a qualified engineer.
• L2 (Ignition Lockout): Check condensate pipe for blockages (Section 4); check other gas appliances for supply; ensure gas supply is on at meter. If issue persists, contact Ideal or a qualified engineer.
• L6 (False Flame Lockout): Restart appliance. If issue persists, contact Ideal or a qualified engineer.
• LC (5 Boiler Resets in 15 minutes): Turn electrical supply to boiler off and on. If issue persists, contact Ideal or a qualified engineer.
• FA (Negative Differential Flow/Return Thermistor): If issue persists, contact Ideal or a qualified engineer.
• FU (Flow/Return Differential > 50°C): If issue persists, contact Ideal or a qualified engineer.
• DU (Diverter Valve in mid-position for service): Rotate all knobs fully clockwise, turn boiler power off and on, then press restart.

For any queries, contact the Ideal Consumer Helpline at 01482 498660. To restart the boiler, press the RESTART button, and it will repeat the ignition sequence if there is a heat demand.

IDEAL LOGIC COMBI ESP1 Series Specifications