Related Manuals for Main System 24 Eco
Summarization of Contents
Building Regulations and the Benchmark Commissioning Checklist
The Benchmark Scheme
Explains the purpose and responsibilities of the Benchmark Scheme for correct equipment and installation.
IMPORTANT - Installation, Commissioning, Service & Repair
Legislation
Outlines relevant UK and IE regulations for installation, including Gas Safety and Building Regulations.
Codes of Practice - refer to the most recent version
Lists relevant British Standards and codes of practice for gas and water installations.
1.0 Introduction
1.1 Description
Provides a general description of the boiler, its models, and key features.
1.2 Contents of Pack
Lists the items included in the boiler packaging.
2.0 General Layout
2.1 Layout
Identifies and labels the main components of the boiler with reference numbers.
3.0 Appliance Operation
3.1 Operating Mode (Fig. 2)
Explains how the boiler functions during normal operation, including pump overrun.
3.2 Frost Protection Mode
Describes the boiler's frost protection feature that prevents freezing.
3.3 Pump Protection
Details the mechanism to prevent pump seizure by periodic operation.
4.0 Technical Data
4.1 System 24 & 28 Eco
Lists technical specifications, dimensions, clearances, and performance data for the boiler models.
6.0 System Details
6.1 Central Heating Circuit
Discusses requirements for fully pumped sealed systems and water treatment procedures.
6.2 Bypass
Describes the boiler's automatic integral bypass feature.
6.3 System Control
Advises on optimal system control using timers and thermostats.
6.0 System Details
6.5 System Filling and Pressurising (Fig. 6)
Details the procedure for filling and pressurising the central heating system.
6.6 Expansion Vessel (Central Heating only)
Explains the function, pre-charge, and capacity of the expansion vessel.
6.7 Safety Pressure Relief Valve (Fig. 7)
Describes the safety relief valve setting and discharge pipe requirements.
7.0 Site Requirements
7.1 Location
Provides guidance on selecting a suitable installation location for the boiler.
7.2 Clearances (Figs. 8 & 9)
Specifies required clearances around the boiler for installation and servicing.
7.0 Site Requirements
7.3 Ventilation of Compartments
Details ventilation requirements for boilers installed in cupboards or compartments.
7.4 Gas Supply
Covers requirements for the gas supply installation, pipe sizing, and connection.
7.5 Electrical Supply
Outlines electrical connection requirements, mains supply, and isolation.
7.6 Bath & Shower Rooms
Addresses installation requirements in rooms containing baths or showers, referencing regulations.
7.0 Site Requirements
7.7 Condensate Drain
Explains the proper installation of the condensate drain pipe, including fall and materials.
7.0 Site Requirements
7.8 Flue (Figs. 17 & 18)
Provides guidelines for siting the flue terminal to ensure safe dispersal of products.
8.0 Flue Options
8.1 Horizontal Flue Systems
Describes configurations, maximum lengths, and equivalent lengths for horizontal flue systems.
8.0 Flue Options
8.2 Twin & Vertical Flue Systems
Details options and equivalent lengths for twin and vertical flue systems.
8.0 Flue Options
8.3 Flue Accessories
Lists available accessories for concentric, twin, and vertical flue systems.
8.0 Flue Options
8.4 Twin Flue Duct Adaptor
Explains the use of the twin flue duct adaptor for connecting to the boiler.
8.5 Twin Flue Connection
Provides instructions for connecting twin flue systems securely.
8.0 Flue Options
8.6 For Roof Terminals
Guides on installing flue terminals on pitched and flat roofs, including flashing.
8.7 Flue Dimensions
Specifies flue length limitations for horizontal flue kits.
8.8 Flue Trim
Mentions the use of a rubber flue trim for installation.
8.9 Terminal Guard (Fig. 20)
Advises on the use and fitting of terminal guards when required by code.
8.10 Flue Deflector (Fig. 21)
Explains how to fit and position a flue deflector for plume direction.
9.0 Plume Displacement
9.1 Plume Displacement Kit (Fig. 23)
Details the recommended kit for managing flue plume to avoid nuisance.
9.0 Plume Displacement
9.2 Determining Permissible Lengths
Explains how to calculate permissible flue lengths using graphs and elbow equivalencies.
9.0 Plume Displacement
9.3 General Fitting Notes
Provides general instructions for fitting plume displacement components and terminals.
10.0 Installation
10.1 Unpacking & Initial Preparation
Covers unpacking the boiler, site preparation, and wall plate fitting.
10.2 Flushing
Describes the procedure for flushing the central heating system before filling.
10.0 Installation
10.3 Fitting The Boiler
Details the steps for lifting, mounting, and connecting the boiler to the wall plate.
10.4 Fitting the Pressure Relief Discharge Pipe (Fig. 44)
Explains how to connect the pressure relief discharge pipe correctly.
10.5 Condensate Drain (see Section 7.7)
Guides on connecting the condensate drain to the trap outlet pipe.
10.0 Installation
10.6 Fitting The Flue
Instructions for fitting the horizontal flue system, including measurements.
10.0 Installation
10.6 Fitting the Flue (Cont)
Continued instructions for fitting the horizontal flue system.
10.0 Installation
10.7 Making The Electrical Connections
Details how to connect external controls and wiring to the boiler.
10.8 Preliminary Electrical Checks
Outlines essential electrical checks before commissioning the boiler.
11.0 Commissioning
11.1 Commissioning the Boiler
Step-by-step guide to commissioning the boiler, including system checks.
11.0 Commissioning
11.2 Check the Operational (Working) Gas Inlet Pressure
Explains how to check gas pressure and rate, and set the boiler to calibration mode.
12.0 Completion
12.1 Completion
Covers user handover, system operation instruction, and final checks.
13.0 Servicing
13.1 Annual Servicing
Recommends annual servicing and outlines essential checks and competence requirements.
13.0 Servicing
13.2 Annual Servicing - Inspection
Details the inspection steps for annual servicing, including component checks.
14.0 Changing Components
14.1 Igniter (Fig. 75)
Instructions for disconnecting, removing, and replacing the igniter.
14.2 Electrode Assembly (Fig. 76)
Instructions for replacing the electrode assembly, including lead connections.
14.0 Changing Components
14.3 Fan
Instructions for replacing the fan, including gas/air inlet and burner assembly.
14.4 Injector (Fig. 77)
Instructions for replacing the injector and associated seals.
14.0 Changing Components
14.5 Burner (Fig. 80)
Instructions for replacing the burner assembly, insulation, and gaskets.
14.6 Insulation (Fig. 80)
Instructions for replacing the insulation and checking the heat exchanger gasket.
14.0 Changing Components
14.7 Safety Thermostat (Fig. 81)
Instructions for replacing the safety thermostat, including plug and screw removal.
14.8 Central Heating Temperature Sensor (NTC) (Fig. 82)
Instructions for replacing the central heating temperature sensor.
14.9 Water Pressure Sensor (Fig. 83)
Instructions for replacing the water pressure sensor.
14.10 DHW Temperature Sensor (NTC) (Fig. 83)
Instructions for replacing the domestic hot water temperature sensor.
14.0 Changing Components
14.11 Heat Exchanger Automatic Air Vent (Fig. 84)
Instructions for replacing the heat exchanger automatic air vent.
14.12 Pump - Head Only (Fig. 85)
Instructions for replacing the pump head, including wiring and speed setting.
14.13 Pump - Complete (Fig. 87)
Instructions for replacing the complete pump assembly, including seals.
14.14 Automatic Air Vent (Fig. 87)
Instructions for replacing the automatic air vent.
14.0 Changing Components
14.15 Pressure Gauge (Figs. 88 & 89)
Instructions for replacing the pressure gauge, including capillary connection.
14.17 Pressure Relief Valve (Fig. 90)
Instructions for replacing the pressure relief valve.
14.0 Changing Components
14.18 P.C.B. (Figs. 91 & 92)
Instructions for replacing the printed circuit board, including control knob transfer.
14.19 Selector Switch (Figs. 91 & 92)
Instructions for replacing the selector switch and its knob.
14.0 Changing Components
14.20 Gas Valve (Fig. 93)
Instructions for replacing the gas valve, including setting and CO2 adjustment.
14.21 Expansion Vessel (Fig. 94)
Instructions for replacing the expansion vessel, including bracket and seals.
15.0 Setting the Gas Valve
15.1 Setting the Gas Valve (CO2 check)
Details the procedure for setting the gas valve based on CO2 readings at max and min rates.
16.0 Electrical
16.1 Illustrated Wiring Diagram
Provides a visual representation of the boiler's electrical wiring connections.
18.0 Fault Finding
18.1 Initial Fault Finding Checks
Lists basic checks for gas, water, electrical supplies, and fuses before troubleshooting.
18.2 Error Codes
Explains the meaning of error codes displayed by the boiler and basic reset procedures.
18.0 Fault Finding
Fault Finding Solutions Section A
Troubleshooting steps for electrical supply, fuses, PCB, and pump issues.
Fault Finding Solutions Section B
Troubleshooting steps for pump, PCB connections, and pump supply cable.
Fault Finding Solutions Section C
Troubleshooting steps for system pressure, water pressure switch, and air vents.
Fault Finding Solutions Section D
Troubleshooting steps for fan connections, fan jamming, or faulty winding.
Fault Finding Solutions Section E
Troubleshooting steps for temperature sensors and incorrect PCB.
18.0 Fault Finding
Fault Finding Solutions Section F
Troubleshooting steps for gas supply, gas valve, and PCB issues.
Fault Finding Solutions Section G
Troubleshooting steps for ignition electrode, spark gap, and PCB.
Fault Finding Solutions Section H
Troubleshooting steps for gas supply pressure, gas valve, and flame sensing.
Fault Finding Solutions Section I
Troubleshooting steps for overheat thermostat operation.
18.0 Fault Finding
Fault Finding Solutions Section J
Troubleshooting steps for PCB and pump supply cable issues.
Fault Finding Solutions Section K
Troubleshooting steps for fan connections to the PCB.
Fault Finding Solutions Section L
Troubleshooting steps for temperature sensors and heat exchanger obstruction.
Need help?
Do you have a question about the System 24 Eco and is the answer not in the manual?
Questions and answers