Baxi Potterton 24 Eco HE User Manual

Installation & Service Instructions

Performa

24 Eco HE

This is a Wall Mounted Powered Flue Condensing Combination Boiler Gas Fired Central Heating Unit.

The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency) Regulations 1993 No3083” and is deemed to meet the requirements of Directive 92/42/EEC on the energy efficiency requirements for new hot water boilers fired with liquid or gaseous fuels:-

Type test for purpose of Regulation 5 certified by: Notified Body 0051.

Product/Production certified by: Notified Body 0086.

For use in GB/IE only.

These instructions include the Benchmark Commissioning Checklist and should be left with the User for safe keeping.

Reset

Burner On

Flame Failure

Power On

bar

Publication No. 5111811

Natural Gas

Potterton Performa 24 Eco HE

G.C.No47 393 11

Building Regulations and the Benchmark

Commissioning Checklist

Building Regulations (England & Wales) require notification of the installation of a heating appliance to the relevant Local Authority Building Control Department. From 1 April 2005 this can be achieved via a Competent Persons Self Certification Scheme as an option to notifying the Local Authority directly. Similar arrangements will follow for Scotland and will apply in Northern Ireland from 1 January 2006.

CORGI operate a Self Certification Scheme for gas heating appliances.

These arrangements represent a change from the situation whereby compliance with Building Regulations was accepted as being demonstrated by completion of the Benchmark Logbook (which was then left on site with the customer).

With the introduction of Self Certification Schemes, the Benchmark Logbook is being withdrawn. However, a similar document in the form of a commissioning checklist and service interval record is incorporated at the back of these instructions.

This company is a member of the Benchmark initiative and fully supports the aims of the programme. Its aim is to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency.

Building Regulations require that installations should comply with manufacturer's instructions. It is therefore important that the commissioning checklist is completed by the installer. The relevant section of Building Regulations only relates to dwellings. Therefore the checklist only applies if the appliance is being installed in a dwelling or some related structure.

The flowchart opposite gives guidance for installers on the process necessary to ensure compliance with Building Regulations.

CONTENTS

Legislation 4

1.0 Introduction 5

2.0 General Layout 6

3.0 Appliance Operation 7

4.0 Technical Data 8

5.0 Dimensions and Fixings 9

6.0 System Details 10

7.0 Site Requirements 13

8.0 Installation 19

9.0 Commissioning 24

10.0 Completion 26

11.0 Servicing the Boiler 27

12.0 Changing Components 29

13.0 Electrical 39

14.0 Short Parts List 40

15.0 Fault Finding 41

Benchmark Checklist 46

Section Page

INSTALLER NOTIFICATION GUIDELINES

Publication No. 5111811

Choose Building

Regulations Notification

Route

Competent Person's

Self Certification Scheme

Install and Commission this appliance to manufacturer's

instructions

Complete the

Benchmark Checklist

If you notify via CORGI Scheme,

CORGI will then notify the

relevant Local Authority

Building Control Scheme

on member's behalf

Building Control

Contact your relevant Local

Authority Building Control

(LABC) who will arrange

an inspection or contact a government approved

inspector

Install and Commission this appliance to manufacturer's

instructions

Scheme Members only

Call CORGI on: 0870 88 88 777

or log onto:

www.corgi-notify.com

within 10 days

You must ensure that the

notification number issued by

CORGI is written onto the

Benchmark Checklist

CORGI will record the data and

will send a certificate of

compliance to the property

Complete the

Benchmark Checklist

LABC will record the data

and will issue a

certificate of compliance

LEGISLATION

Publication No. 5111811

Codes of Practice, most recent version should be used

IMPORTANT - Installation, Commissioning, Service & Repair

This appliance must be installed in accordance with the manufacturer’s instructions and the regulations in force. Read the instructions fully before installing or using the appliance.

In GB, this must be carried out by a competent person as stated in the Gas Safety (Installation & Use) Regulations.

Definition of competence: A person who works for a CORGI registered company and holding current certificates in the relevant ACS modules, is deemed competent.

In IE, this must be carried out by a competent person as stated in I.S. 813 “Domestic Gas Installations”.

Lifting - This product should be lifted and handled by two people. Stooping should be avoided and protective equipment worn where necessary. Carrying & lifting equipment should be used as required, e.g. when installing in a loft space.

The addition of anything that may interfere with the normal operation of the appliance without express written permission from the manufacturer or his agent could invalidate the appliance warranty. In GB this could also infringe the Gas Safety (Installation and Use) Regulations.

Warning - Check the information on the data plate is compatible with local supply conditions.

All CORGI registered installers carry a CORGI identification card and have a registration number. You can check your installer is registered by telephoning 0870 4012300 or writing to:-

1 Elmwood,

Chineham Business Park,

Crockford Lane,

Basingstoke. RG24 8WG

or check online at www.corgi-gas-safety.com

Potterton declare that no substances harmful to health are contained in the appliance or used during appliance manufacture.

The appliance is suitable only for installation in GB and IE and should be installed in accordance with the rules in force, and only used in a suitably ventilated location.

In GB, the installation must be carried out by a CORGI Registered Installer. It must be carried out in accordance with the relevant requirements of the:

• Gas Safety (Installation & Use) Regulations.

• The appropriate Building Regulations either The Building Regulations, The Building Regulations (Scotland), Building Regulations (Northern Ireland).

• The Water Fittings Regulations or Water Byelaws in Scotland.

• The Current I.E.E. Wiring Regulations.

Where no specific instructions are given, reference should be made to the relevant British Standard Code of Practice.

In IE, the installation must be carried out by a competent Person and installed in accordance with the current edition of I.S. 813 ‘Domestic Gas Installations’, the current Building Regulations and reference should be made to the current ETCI rules for electrical installation.

All systems must be thoroughly flushed and treated with inhibitor (see section 6.2).

In GB the following Codes of Practice apply: Standard Scope

BS 6891 Gas Installation. BS 5546 Installation of hot water supplies for

domestic purposes. BS 5449 Forced circulation hot water systems. BS 6798 Installation of gas fired hot water boilers. BS 5440 Part 1 Flues. BS 5440 Part 2 Ventilation. BS 7074 Expansion vessels and ancillary equipment

for sealed water systems. BS 7593 Treatment of water in domestic hot water

central heating systems.

In IE the following Codes of Practice apply: Standard Scope

I.S. 813 Domestic Gas Installations. The following BS standards give valuable additional information; BS 5546 Installation of hot water supplies for

domestic purposes. BS 5449 Forced circulation hot water systems. BS 7074 Expansion vessels and ancillary equipment

for sealed water systems. BS 7593 Treatment of water in domestic hot water

central heating systems.

1.0 INTRODUCTION

Publication No. 5111811

1.1 Description

1. The Potterton Performa 24 Eco HE is a fully automatic gas fired wall mounted condensing combination boiler. It is room sealed and fan assisted, and will provide central heating and mains fed domestic hot water.

2. The boiler is set to give a maximum output of

25.2 kW (condensing).

3. It is designed for use on Natural Gas (G20) and can be converted to use Propane.

4. The boiler is suitable for use only on fully pumped sealed heating systems. Priority is given to domestic hot water.

5. The boiler data badge gives details of the model, serial number and Gas Council number and is situated on the control box. It is visible when the case front panel is removed (Fig. 1).

6. The boiler is intended to be installed in residential / commercial / light industrial E.M.C. environments on a governed meter supply only.

7. The boiler must be installed with one of the purpose designed flues such as the standard horizontal flue kit, part no. 5111073.

8. All systems must be thoroughly flushed and treated with inhibitor (see section 6.2).

1.2 Optional Extras

1. Various flue extensions, bends, vertical flue kits, control accessories etc. are available as optional extras. These are detailed in a separate publication.

Data Badge

Fig. 1

Control Box

Case Front Panel

2.0 GENERAL LAYOUT

Publication No. 5111811

2.1 Layout

1. Air Pressure Switch

2. Expansion Vessel

3. Burner Manifold

4. Automatic Air Vent

5. DHW Plate Heat Exchanger

6. Circulation Pump

7. Drain Off Point

8. Pressure Relief Valve

9. Optional Integral Timer Position

10. Central Heating System Pressure Gauge

11. Control PCB

12. Control Box

13. 3-Way Valve Assembly

14. Condensate Trap

15. Flame Sensing Electrode

16. Spark Electrode

17. Burner

18. Primary Heat Exchanger

19. Fan Assembly

20. Secondary Heat Exchanger

21. On / Off / Reset Selector Switch

22. Burner & Fault Indicator Neon

23. Power Neon

24. Flame Failure & Fault Indicator Neon

25. Central Heating Temperature Control

26. Hot Water Temperature Control

21 22 23

25 26 10 9

Fig. 2

Fig. 3

Performa 24 Eco HE

Reset

Burner On

Flame Failure

Power On

bar

3.0 APPLIANCE OPERATION

Publication No. 5111811

NOTE: All delay timers mentioned in 3.1 and 3.2 are overridden by domestic hot water demand.

3.1 Central Heating Mode (Fig. 4)

1. With a demand for heating, the pump circulates water through the primary circuit. At a predetermined flow rate the central heating flow switch operates, initiating the ignition sequence.

2. The main burner ignites at low rate, then the gas valve controls the gas rate to maintain the heating temperature measured by the temperature sensor.

3. When the flow temperature exceeds the setting temperature, a 3 minute delay occurs before the burner relights automatically (anti-cycling). The pump continues to run during this period.

3.2 Domestic Hot Water Mode (Fig. 5)

1. Priority is given to the domestic hot water supply. A demand at a tap or shower will override any central heating requirement.

2. The flow of water will operate the DHW flow switch which causes the 3 way valve to change position. This will allow the pump to circulate the primary water through the DHW plate heat exchanger.

3. The burner will light automatically and the temperature of the domestic hot water is controlled by the temperature sensor.

4. When the domestic hot water demand ceases the burner will extinguish and the diverter valve will remain in the domestic hot water mode, unless there is a demand for central heating.

IMPORTANT: When the selector switch is in the ‘0’ (Off) position the electrical supply to the boiler is isolated. The boiler will not operate and the integral timer (if fitted) will require resetting once the selector switch is turned to either the DHW or CH position.

5 6

1213141516

1 Primary Heat Exchanger 2 Burner 3 Ignition Electrode 4 Flame Sensing Electrode 5 Gas Valve 6 Pump 7 Automatic Air Vent 8 Plate Heat Exchanger 9 Flow Sensor with Filter 10 Pressure Relief Valve 11 Boiler Drain Point 12 Heating Return 13 Cold Water Inlet On/Off Valve and Filter

14 Gas Inlet 15 Domestic Hot Water Outlet 16 Heating Flow 17 Pressure Gauge 18 Hydraulic Differential Pressure Sensor Microswitch 19 Automatic By-Pass 20 Hydraulic Differential Pressure Sensor 21 Diverter Valve Assembly 22 Domestic Hot Water Flow Priority Assembly 23 Domestic Hot Water Flow Priority Microswitch 24 Temperature Sensor 25 Overheat Thermostat 26 Expansion Vessel 27 Secondary Heat Exchanger

Key

Central Heating Circuit

Domestic Hot Water Circuit

Fig. 4

Fig. 5

5 6

1213141516

4.0 TECHNICAL DATA

Publication No. 5111811

Temperatures

C.H. Flow Temp (adjustable)

35°C to 85°C max (± 5°C)

D.H.W. Flow Temp

35°C to 65°C max (± 5°C) dependent upon flow rate

This value is used in the UK Government’s Standard Assessment

Procedure (SAP) for energy rating of dwellings. The test data from

which it has been calculated have been certified by 0051.

SEDBUK Declaration For Performa 24 Eco HE

The seasonal efficiency (SEDBUK) is 87.3% (89.3% LPG)

Band B

Heat Input CH

Max Min

kW 24.8 10.6

Heat Output CH (Non-Condensing)

Max Min

kW 24 9.8

Electrical Supply 230V~ 50H

(Appliance must be connected to an earthed supply)

Power Consumption 170W

External Fuse Rating 3A

Internal Fuse Rating

Fuse 2A Fast Blow to BS 4265

Appliance Category CAT II

2H 3P

Inlet Pressure (Natural Gas - G20)

mbar 20

Burner Injector (Natural Gas - G20)

15 x 1.18mm Diameter

Burner Pressure (Natural Gas - G20)

Max Rate Min Rate

mbar 10.2 ± 0.5 2 ± 0.2

Appliance Type C

Heat Output CH (Condensing)

Max Min

kW 25.2 10.1

Heat Input DHW

Max

kW 24.8

Heat Output DHW

Max

kW 24

Flue Terminal Diameter 100mm Dimensions Projection 125mm

Outercase Dimensions

Casing Height - 780mm Overall Height Inc Flue Elbow - 965mm Casing Width - 450mm Casing Depth - 345mm

Clearances

Above Casing 200 mm Min Below Casing 200 mm Min Front 450 mm Min (For Servicing) Front 5 mm Min (In Operation) L.H. Side 5 mm Min R.H. Side 5 mm Min (In Operation)

20 mm Min (See Note*)

*NOTE: The boiler can be operated with a clearance of 5mm at the right. This is also sufficient for routine maintenance. However a clearance of 20mm is required if it is necessary to remove the secondary heat exchanger. This should be considered when siting the appliance and in the event of any subsequent alterations in the area of installation

Weights kg

Packaged Boiler Carton 50 Installation Lift Weight 43.5

Connections copper tails Gas Supply - 22mm Central Heating Flow - 22mm Central Heating Return - 22mm Cold Water Mains Inlet - 15mm DHW Flow - 15mm Pressure Relief Discharge - 15mm

NOxClass 3

Electrical Protection IPX4D

Condensate Drain 1” BSP

LPG Propane - G31

Burner Injector 15 x 0.77mm diameter

Burner Pressure

Propane mbar

Inlet Pressures

mbar

Max Rate

21.8 ± 0.5

Min Rate

4.4 ± 0.2

Central Heating Primary Circuit Pressures

bar Safety Discharge 3 Max Operating 2.5 Min Operating 0.5 Recommend Operating 1-2

DHW Circuit bar Pressures

Max Operating 8 Min Operating 0.2

Min Operating Pressure at 11.1 l/min 0.9

Flow Rates l/min DHW Flow Rate @ 30°C Rise 11.5

DHW Flow Rate @ 35°C Rise 9.8

Min Working DHW Flow Rate 2.5

Pump

Available Head See graph below

Expansion Vessel - (For Central Heating only. Integral with appliance)

bar

Min Pre-charge Pressure 0.5

litre Max Capacity of CH System 125

Primary Water Content 1.0 of Boiler (unpressurised)

Max Gas Rate (Natural Gas - G20)

(After 10 mins)

m3/h 2.62

4.5

3.5

2.5

Metre (wg)

1.5

0.5

Pump - Available Head

200 400 600 800 1000 1200

Flow Rate (l/h)

5.0 DIMENSIONS AND FIXINGS

Publication No. 5111811

Dimensions

A 780mm

B 345mm

C 450mm

D 116mm Ø Min.

E 185mm

F 190mm

G 131mm

65mm 65mm 65mm 65mm

View from under the appliance

Gas Inlet

Heating

Flow

Domestic Hot

Water Outlet

Cold Water

Inlet

Heating

Return

130mm

165.7mm

95mm

Left Hand Side

of Boiler

Fig. 7

360° Orientation

Tube Ø 100mm

Fig. 6

68mm

265mm

6.0 SYSTEM DETAILS

Publication No. 5111811

6.1 Information

1. The Potterton Performa 24 Eco HE Condensing Combination Boiler is a ‘Water Byelaws Scheme Approved Product’. To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN).

a) IRN 001 - See text of entry for installation

requirements and notes.

b) IRN 302 - Byelaw 14.

2. Reference to the WRc publications, ‘Water fittings and materials directory’ and ‘Water supply byelaws guide’ give full details of byelaws and the IRNs.

6.2 Central Heating Circuit

1. The appliance is suitable for fully pumped SEALED SYSTEMS ONLY.

Treatment of Water Circulating Systems

• All recirculatory water systems will be subject to corrosion unless an appropriate water treatment is applied. This means that the efficiency of the system will deteriorate as corrosion sludge accumulates within the system, risking damage to pump and valves, boiler noise and circulation problems.

• When fitting new systems flux will be evident within the system, which can lead to damage of system components.

• All systems must be thoroughly drained and flushed out. Using for example Betz-Dearborn Sentinel X300 or X400 or Fernox Superfloc Universal Cleanser which should be used following the flushing agent manufacturer’s instructions.

• System additives - corrosion inhibitors and flushing agents/descalers should be suitable for aluminium and comply to BS7593 requirements, e.g. Betz-Dearborn Sentinel X100 and Fernox-Copal which should be used following the inhibitor manufacturer’s instructions.

Failure to flush and add inhibitor to the system will invalidate the appliance warranty.

• It is important to check the inhibitor concentration after installation, system modification and at every service in accordance with the manufacturer’s instructions. (Test kits are available from inhibitor stockists.)

• For information or advice regarding any of the above contact the Potterton Helpline.

6.3 Bypass

1. The boiler is fitted with an automatic integral bypass.

6.4 System Control

1. The boiler is designed for use in a heating system that incorporates external controls, i.e. a minimum of a timer device.

2. An integral electro-mechanical or electronic timer is available as an optional extra.

3. For optimum operating conditions and maximum economy the fitting of a programmable thermostat is recommended.

6.0 SYSTEM DETAILS

Publication No. 5111811

6.5 System Filling and Pressurising

1. A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling.

2. There are connection points on the mains cold water inlet and central heating return isolating taps to which the optional filling loop kit (Part No. 248221) can be assembled.

3. The filling method adopted must be in accordance with all relevant water supply regulations and use approved equipment.

4. Your attention is drawn to: for GB: Guidance G24.2 and recommendation R24.2 of the Water Regulations Guide. for IE: the current edition of I.S. 813 “Domestic Gas Installations”.

5. The sealed primary circuits may be filled or replenished by means of a temporary connection between the circuit and a supply pipe, provided a ‘Listed’ double check valve or some other no less effective backflow prevention device is permanently connected at the inlet to the circuit and the temporary connection is removed after use.

6.6 Expansion Vessel

(Central Heating only)

1. The appliance expansion vessel is pre-charged to

0.5 bar. Therefore, the minimum cold fill pressure is

0.5 bar. The vessel is suitable for correct operation for system capacities up to 125 litres. For greater system capacities an additional expansion vessel must be fitted. For GB refer to BS 7074 Pt 1. For IE, the current edition of I.S. 813 “Domestic Gas Installations”.

6.7 Pressure Relief Valve (Fig. 9)

1. The pressure relief valve is set at 3 bar, therefore all pipework, fittings, etc. should be suitable for pressures in excess of 3 bar.

2. The pressure relief discharge pipe should be not less than 15mm dia, run continuously downward, and discharge outside the building, preferably over a drain. It should be routed in such a manner that no hazard occurs or causes damage to wiring or electrical components. The end of the pipe should terminate facing down and towards the wall.

3. The discharge must not be above a window, entrance or other public access. Consideration must be given to the possibility that boiling water/steam could discharge from the pipe.

Fig. 8

Fig. 9

Stop Valve

Double Check Valve

DHW Mains Inlet

CH Return

Temporary Hose

Pressure Relief Valve

Discharge Pipe

Stop Valve

6.0 SYSTEM DETAILS

Publication No. 5111811

6.8 Domestic Hot Water Circuit

1. All DHW circuits, connections, fittings, etc. should be fully in accordance with relevant standards and water supply regulations.

2. Your attention is drawn to: for GB: Guidance G17 to G24 and recommendation R17 to R24 of the Water Regulations Guide. for IE: the current edition of I.S. 813 “Domestic Gas Installations”.

3. A single check valve must be fitted as shown in Fig. 10 to prevent backflow to the supply pipe and to ensure the efficient operation of the expansion vessel which is required to accommodate the thermal expansion of the water.

4. When the domestic water system includes any device which prevents water expanding back towards the supply (check valve, loose jumpered stopcock, water meter, water treatment device) then an expansion vessel must be fitted (eg. Zilmet 160ml, R

/215bar).

5. If the hot water expansion is not provided for, then high pressures can develop which may result in damage to fittings and devices on the system.

6. The boiler’s maximum working mains pressure is 8 bar, therefore all pipework, connections, fittings, etc. should be suitable for pressures in excess of 8 bar. A pressure reducing valve must be fitted for pressures in excess of 8 bar. The manufacturer of any outlet fittings, such as a shower valve, may require a lower maximum pressure. The pressure reduction must take account of all fittings connected to the DHW system.

6.9 Showers

1. If a shower control is supplied from the appliance it should be of the thermostatic or pressure balanced type. Thermostatic type shower valves provide the best comfort and guard against water at too high a temperature. Existing controls may not be suitable refer to the shower valve manufacturer.

6.10 Hard Water Areas

1. If the area of the installation is recognised as a HARD WATER AREA then a suitable device should be fitted to treat the mains water supply to the boiler. Contact your Water Distribution Company for advice on suitable devices.

Boiler

Other Tap Outlets

Expansion Vessel

To Hot Taps

Check Valve

Pressure Reducing Valve

Stop Tap

Fig. 10

7.0 SITE REQUIREMENTS

Publication No. 5111811

7.1 Location

1. The boiler may be fitted to any suitable wall with the flue passing through an outside wall or roof and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply. The boiler should be fitted within the building unless otherwise protected by a suitable enclosure i.e. garage or outhouse. (The boiler may be fitted inside a cupboard

- see Section 7.3).

2. If the boiler is sited in an unheated enclosure then it is recommended that frost protection is incorporated in the control system.

3. If the boiler is fitted in a room containing a bath or shower reference must be made to the relevant requirements. In GB this is the current I.E.E. Wiring Regulations and Building Regulations. In IE reference should be made to the current edition of I.S. 813 “Domestic Gas Installations” and the current ETCI rules.

4. If the boiler is to be fitted into a building of timber frame construction then reference must be made to the current edition of Institute of Gas Engineers Publication IGE/UP/7 (Gas Installations in Timber Framed Housing).

7.2 Clearances (Fig. 11 & 12)

1. A flat vertical area is required for the installation of the boiler.

2. These dimensions include the necessary clearances around the boiler for case removal, spanner access and air movement. Additional clearances may be required for the passage of pipes around local obstructions such as joists running parallel to the front face of the boiler.

* NOTE: The boiler can be operated with a clearance of 5mm at the right. This is also sufficient for routine maintenance. However a clearance of 20mm is required if it is necessary to remove the secondary heat exchanger. This should be considered when siting the appliance and in the event of any subsequent alteration in the area of installation.

200mm Min

780mm

450mm

200mm Min

20mm/5mm Min

see *NOTE:

5mm Min

450mm Min

For Servicing

Purposes

Fig. 11

Fig. 12

In Operation

Burner On

Reset

Flame Failure

Power On

bar

7.0 SITE REQUIREMENTS

Publication No. 5111811

7.3 Ventilation of Compartments

1. Where the appliance is installed in a cupboard or compartment, no air vents are required.

2. BS 5440: Part 2 refers to room sealed appliances installed in compartments. The appliance will run sufficiently cool without ventilation.

7.4 Gas Supply

1. The gas installation should be in accordance with the relevant standards. In GB this is BS 6891. In IE this is the current edition of I.S. 813 “Domestic Gas Installations”.

2. The connection to the appliance is a 22mm copper tail located at the rear of the gas service cock (Fig. 13).

3. Ensure that the pipework from the meter to the appliance is of adequate size. Do not use pipes of a smaller diameter than the boiler gas connection (22mm).

7.5 Electrical Supply

1. External wiring must be correctly earthed, polarised and in accordance with relevant regulations/rules. In GB this is the current I.E.E. Wiring Regulations. In IE reference should be made to the current edition of ETCI rules.

2. The mains supply is 230V ~ 50Hz fused at 3A maximum.

NOTE: The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance.

Connection may be via a fused double-pole isolator with a contact separation of at least 3mm in all poles and servicing the boiler and system controls only.

Fig. 13

Gas Service Cock

7.0 SITE REQUIREMENTS

Publication No. 5111811

7.6 Condensate Drain

FAILURE TO INSTALL THE CONDENSATE DISCHARGE PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE OPERATION OF THE BOILER

The condensate discharge pipe MUST NOT RISE at any point along its length. There MUST be a fall of AT LEAST

2.5° (50mm per metre) along the entire run.

1. The condensate outlet terminates in a 1” BSP nut and seal for the connection of 21.5mm (

/4in) plastic overflow pipe which should generally discharge internally into the household drainage system. If this is not possible, discharge into an outside drain is acceptable.

2. Ensure the discharge of condensate complies with any national or local regulations in force.

BS 6798:2000 & Part H1 of the Building Regulations give further guidance.

3. The discharge pipe should be run in a proprietary drain pipe material e.g. PVC, PVC-U, ABS, PVC-C or PP.

4. Metal pipework is NOT suitable for use in condensate discharge systems.

5. The pipe should be a minimum of 21.5mm diameter and must be supported using suitably spaced clips to prevent sagging.

6. Any pipe fitted externally must not exceed 3 metres.

7. Any condensate discharge pipework external to the

building (or in an unheated part of it e.g. garage) must be insulated to protect against frost. It is also recommended that the pipe diameter is increased to 32mm.

8. If the boiler is fitted in an unheated location the entire condensate discharge pipe should be treated as an external run.

9. In all cases discharge pipe must be installed to aid disposal of the condensate. To reduce the risk of condensate being trapped, as few bends and fittings as possible should be used.

10. When discharging condensate into a soil stack or waste pipe the effects of existing plumbing must be considered. If soil pipes or waste pipes are subjected to internal pressure fluctuations when WC's are flushed or sinks emptied then back-pressure may force water out of the boiler trap and cause appliance lockout.

Examples are shown of the following methods of termination:i) to an internal soil & vent pipe ii) via an internal discharge branch (e.g. sink waste) iii) to a drain or gully iv) to a purpose made soakaway

Boiler

2.5° Minimum fall

Termination to an internal soil

and vent pipe

450mm min

Boiler

2.5° Minimum fall

External termination via internal

discharge branch

e.g sink waste - downstream

Sink

Pipe must terminate above water level but below surrounding surface

Boiler

Pipe must terminate above water level but below surrounding surface

2.5° Minimum fall

External termination to a drain or gully

Boiler

500mm min

2.5° Minimum fall

External termination to a purpose

made soak-away

Holes in the soak-away must face away from the building

50mm per metre of pipe run

7.0 SITE REQUIREMENTS

Publication No. 5111811

7.7 Flue

NOTE: Due to the nature of the boiler a plume of

water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal.

1. The following guidelines indicate the general requirements for siting balanced flue terminals. For GB recommendations are given in BS 5440 Pt 1. For IE recommendations are given in the current edition of I.S. 813 “Domestic Gas Installations”.

2. If the terminal discharges onto a pathway or passageway, check that combustion products will not cause a nuisance and that the terminal will not obstruct the passageway.

3. If a terminal is less than 2 metres above a balcony, above ground or above a flat roof to which people have access, then a suitable terminal guard must be provided.

Terminal Position with Minimum Distance (Fig. 14) (mm)

A* Directly below an openable window, air vent or any other

ventilation opening. 300 B Below gutters, drain/soil pipe. 25 C Below eaves. 25 D Below balcony/car port roof. 25 E From vertical drain pipes and soil pipes. 25 F From internal or external corners. 25 G Above adjacent ground or balcony level. 300 H From a surface or boundary facing the terminal. 600 I Facing terminals. 1200 J For opening (door/window) in car port into dwelling. 1200 K Vertically from a terminal on the same wall. 1500 L Horizontally from a terminal on the same wall. 300 M* Above an opening, air brick, opening window etc. 300 N* Horizontally to an opening, air brick, opening window etc.

300

* In addition, the terminal should be no nearer than 150mm to an

opening in the building fabric formed for the purpose of accommodating a built-in element such as a window frame. See BS 5440 Pt. 1.

Fig. 14

H,I

B,C

Likely flue positions requiring a flue terminal guard

300 min

Terminal Assembly

Top View Rear Flue

Property Boundary Line

Fig. 15

7.0 SITE REQUIREMENTS

Publication No. 5111811

Fig. 17

Fig. 16

7.8 Flue Dimensions

The standard horizontal flue kit allows for flue lengths between 100mm and 685mm from elbow to terminal (Fig. 16).

The maximum permissible flue length is: 4 metres.

7.9 Flue Trim

1. The rubber flue trim supplied may be fitted to either the outside wall or on the inner wall of installation.

7.10 Terminal Guard (Fig. 17)

1. When codes of practice dictate the use of terminal guards, they can be obtained from most Plumbers’ and Builders’ Merchants.

2. There must be a clearance of at least 50mm between any part of the terminal and the guard.

3. When ordering a terminal guard, quote the appliance name and model number.

4. The flue terminal guard should be positioned centrally over the terminal and fixed as illustrated.

100mm

685mm

7.0 SITE REQUIREMENTS

Publication No. 5111811

7.11 Flue Options

1. The Potterton Performa 24 Eco HE can be fitted with flue systems as illustrated.

2. The standard flue is suitable only for horizontal applications.

3. Maximum permissible equivalent flue lengths are:-

Horizontal Concentric 4 metres Vertical Concentric 4 metres Vertical Twin Pipe 12 metres

4. Any additional “in line” bends in the flue system must be taken into consideration. Their equivalent lengths are:Concentric Pipes:

45° bend 0.5 metres 93° bend 1.0 metres

Twin Flue Pipe

45° bend 0.25 metres

91.5° bend 0.50 metres

The elbow supplied with the standard horizontal flue is not included in any equivalent length calculations

5. The illustrations opposite show examples of maximum equivalent lengths.

6. Instructions for guidance and fitting are included in each kit, where appropriate.

NOTE: Flue length is measured from point A to B as shown.

Horizontal Flues

Vertical Flues

Vertical Flues (Twin Pipe)

8.0 INSTALLATION

Publication No. 5111811

8.1 Initial Preparation

The gas supply, gas type and pressure must be checked for suitability before connection (see Section 7.4).

1. After considering the site requirements (see Section 7.0) position the fixing template on the wall ensuring it is level both horizontally and vertically.

2. Mark the position of the two most suitable fixing slots for the wall plate and boiler lower fixing holes. It is preferable to use the horizontal fixing slots. For side flue exit, mark as shown (Fig. 18).

3. Mark the position of the centre of the flue hole (rear exit). For side flue exit, mark as shown.

4. If required, mark the position of the gas and water pipes. Remove the template.

5. Cut the hole for the flue (minimum diameter 116mm).

6. Drill the wall as previously marked to accept the wall plugs supplied. Secure the wall plate using two of the fixing screws.

7. Using a spirit level ensure that the plate is level before finally tightening the screws.

8.2 Flushing

1. Connect a tube to the central heating flow or return pipe (Fig. 19).

2. Flush thoroughly (see System Details, Section

6.2).

8.3 Preparing The Boiler

1. Remove all packaging.

2. Stand the boiler on its base by using the rear lower edge as a pivot.

NOTE: A small amount of water may drain from the boiler in the upright position.

Fig. 18

Fig. 19

190mm

For Side Flue Exit

Central Heating Return

Flushing Tube

8.0 INSTALLATION

Publication No. 5111811

8.4 Fitting The Boiler

1. Lift the boiler using the lower edges. Engage the slots at the top rear of the boiler on the wall plate hooks (Fig. 20).

2. Ensure that the boiler is level and sits against the wall.

3. Take the two steel washers and remaining screws. Using the previously drilled and plugged holes, secure the bottom of the boiler to the wall (Fig. 21).

4. Remove the elbows, valves and sealing washers from the packaging. The 3/4 in valve with internal filter must be fitted to the central heating return. The filter is visible through the branch connection of the valve.

5. Using the sealing washers provided connect the valves to the heating flow and return, and the cold water inlet.

6. Connect the elbows to the gas service cock and hot water outlet pipe, and then connect the elbows to the boiler. Connect the elbows with flared ends to the valves.

7. Ensure that the sealing washers are used on all connections. The rubber washers must be used on the gas connections.

8. The gas and water supplies, central heating flow and return and domestic hot water flow can now be connected.

8.5 Fitting the Pressure Relief Discharge Pipe (Fig. 22)

1. Remove the discharge pipe from the kit.

2. Determine the routing of the discharge pipe in the vicinity of the boiler. Make up as much of the pipework as is practical, including the discharge pipe supplied.

3. The pipework must be at least 15mm diameter and run continuously downwards to a discharge point outside the building. See section 6.7 for further details.

4. Using one of the sealing washers, connect the discharge pipe to the adaptor and tighten the nut.

5. Complete the discharge pipework and route it to the outside discharge point.

IMPORTANT: Make all soldered joints before connecting to the pressure relief valve.

Fig. 22

Fig. 20

Fig. 21

Pressure Relief Valve

Securing Screw

Washer

Wall Plate

Discharge Pipe

8.0 INSTALLATION

Publication No. 5111811

8.6 Condensate Drain (see section 7.6)

1. Connect the condensate drain using the 1” BSP nut and seal supplied.

Ensure the discharge of condensate complies with any national or local regulations in force (see British Gas “Guidance Notes for the Installation of Domestic Gas Condensing Boilers”.

2. The condensate outlet terminates in a 1” BSP nut and seal for the connection of 21.5mm (

/4in) plastic overflow pipe which should generally discharge internally into the household drainage system. If this is not possible, discharge into an outside drain is acceptable.

8.7 Fitting The Flue

HORIZONTAL FLUE

1. The standard flue is suitable for lengths between 100mm minimum and 685mm maximum, as measured from the edge of the flue elbow outlet to the joint between the terminal and air duct (Fig. 23).

2. Locate the flue elbow on the adaptor at the top of the boiler. Set the elbow to the required orientation (Fig. 24).

NOTE: The flue elbow is angled at 93 degrees to ensure a fall back to the boiler.

3. Measure the distance from the outside wall face to the elbow. This dimension will be known as ‘X’ (Fig. 25).

4. To dimension ‘X’ add 50mm. This dimension to be known as ‘Y’.

IMPORTANT: Check all dimensions before cutting.

Wall Thickness

(X)

Wall Thickness

(X)

Flue Elbow

Fig. 25

100mm

685mm

Fig. 23

Fig. 24

Adaptor

8.0 INSTALLATION

Publication No. 5111811

8.7 Fitting the Flue (Cont)

5. Mark dimension ‘Y’ on the flue as shown (Fig. 26). Carefully cut the waste material from the flue, ensuring that the ducts are square and free from burrs.

6. The inner flue duct support bracket may be in the waste portion of the flue. In this case retrieve the bracket before discarding the waste.

7. Take the inner flue support bracket (if not already fitted) and engage it over the flue duct. This will centralise the flue and air ducts, and ease assembly (Fig. 27).

8. Insert the flue through the hole in the wall. Fit the elbow to the boiler adaptor, ensuring that it is pushed fully in.

9. Draw the flue back through the wall and engage it in the elbow. It may be necessary to use soap solution or similar to ease assembly of the elbow adaptor and flue (Fig. 28).

10. Make good between the wall and air duct outside the building.

11. Fit the flue trim if required, and if necessary fit a terminal guard (see Section 7.9 & 7.10).

VERTICAL FLUE

1. Only a flue approved with the Potterton Performa 24 Eco HE can be used.

2. For information on vertical flues consult the Potterton Flue Guide brochure.

Flue Trim

Inner Flue Support Bracket

Flue

Waste

Flue Elbow

Fig. 26

Fig. 27

Fig. 28

8.0 INSTALLATION

Publication No. 5111811

Fig. 31

Fig. 30

Fig. 32

Fig. 33

Fig. 29

Cable Clamp

Control Box Cover

Facia Panel

Functional Flow Diagram

Key to Wiring

b - blue br - brown bk - black r - red g - green w - white

Always fit fast

blow 2A fuse

Fused supply 3A 230V ~ 50Hz

Live (brown)

Neutral (blue)

Earth (green/yellow)

230V

g/y

Terminal Block

Fuse

8.8 Making The Electrical Connections

To connect the mains input cable proceed as follows:-

1. Slacken the facia panel securing screws and lift the outercase panel so that its securing tabs are clear of the facia. Remove the panel.

2. Completely undo the screws securing the facia panel and hinge it down (Fig. 29).

3. Remove the control box cover securing screws. Disengage the barbs on the control box from the cover. Remove the cover (Fig. 30).

4. Slacken the cable clamp on the LH side of the boiler chassis (Fig. 31). Insert the cable through the clamp and route it to the terminal block.

5. Slacken the screws in the terminal block, connect the input cable, and tighten the screws.

6. If an external control is to be connected it can be done at this point. Run the input cable from the external control through the second cable clamp on the boiler chassis. Refer to the instructions supplied with the control.

7. To connect external control(s) remove the link between terminals 1 & 2. The 230V supply at terminal 1 can be connected to the external control as shown. The switched output from the external control must be connected to terminal 2. (Figs. 32).

NOTE: If the room thermostat being used incorporates an anticipator it MUST be wired as shown in Fig. 32.

IMPORTANT: The external control MUST be suitable for 230V switching.

8. Ensure that both mains input and, where fitted, external control input cables have sufficient slack to allow the control box to drop down. Tighten the cable clamp(s) on the boiler chassis.

9. If an optional integral timer is to be used it should be fitted at this point. Refer to the instructions supplied with the timer. NOTE: An external frost thermostat cannot be used with the integral timer.

8.9 Preliminary Electrical Checks

1. Prior to commissioning the boiler preliminary electrical system checks should be carried out.

2. These should be performed using a suitable meter, and include checks for Ground Continuity, Resistance to Ground, Short Circuit and Polarity.

IMPORTANT: If an integral timer is fitted to the boiler an external frost thermostat wired as shown will not operate correctly. Only external timers may be used in such installations, as in the diagram.

External Controls

230 V

Selector /

Reset Switch

Frost Thermostat

External Clock

Room Thermostat

PCB

L N

230 V

Pump

br b

Fan

br b

Flue Thermostat

Safety Overheat Thermostat

Gas Valve Modulator

Gas Valve

br bk

Pressure Switch

NTC Sensor

Spark Electrode

Condensate Trap

Flame Sensing Electrode

Hydraulic Differential Pressure Switch

DHW Flow Priority Microswitch

g/y

9.0 COMMISSIONING

Publication No. 5111811

9.1 Commissioning the Boiler

1. Reference should be made to BS 5449 Section 5 when commissioning the boiler.

2. Open the mains water supply to the boiler.

3. Open all hot water taps to purge the DHW system.

4. Ensure that the filling loop is connected and open, then open the heating flow and return valves on the boiler.

5. Open the screw on the automatic air vent (Fig. 35).

6. The system must be flushed in accordance with BS 7593 (see Section 6.2) and the flushing agent manufacturers instructions.

7. Pressurise the system to at least 0.5 bar then close and disconnect the filling loop (Fig. 34).

8. Turn the gas supply on and purge the system according to in GB BS 6891 and in IE I.S. 813 “Domestic Gas Installations”.

9. Test for gas soundness.

10. If at any time during commissioning it is required to terminate a particular cycle, turn the selector to the OFF position and then back to either ( ) or ( ) (Fig. 36).

Automatic Air Vent

Pressure Gauge

Screw

bar

Selector Switch

Central Heating

Temperature Control

Hot Water

Temperature Control

Fig. 35

Fig. 36

Fig. 34

Reset

Performa 24 Eco HE

Burner On

Flame Failure

Power On

bar

9.0 COMMISSIONING

Publication No. 5111811

9.2 Checking the Burner Pressure

1. Turn on the gas and electrical supplies to the boiler and ensure that all external controls are calling for heat.

2. Set the hot water and central heating temperature controls to maximum and the selector switch to the OFF position (Fig. 37).

3. Slacken the pressure test point sealing screw on the gas valve and connect a pressure gauge (Fig. 38).

4. Disconnect the sensing tube from the gas valve.

5. Turn the selector switch fully anticlockwise against the spring pressure to the reset position and hold for 2 seconds to reset the boiler.

6. Turn the selector switch to the Cental Heating and Domestic Hot Water position ( ). The power ON light ( ) will illuminate (Fig. 37).

7. Turn on a hot water tap to give a flow rate of at least 10 l/min.

8. The pressure should be :-

NG 10.2 mbar Propane 21.8 mbar

If not, check that the gas supply pressure is correct (Natural Gas 20mbar, and Propane 37mbar).

9. The pressure can be adjusted if required.

10. To check and set minimum pressure first remove one of the modulator wires.

Adjusting the Pressure (Fig 39)

11. Remove the plastic protection cap from the pressure adjustment nuts on the valve.

12. The smaller nut (5mm) adjusts minimum pressure and the larger nut (8mm) maximum pressure.

13. Using a suitable spanner adjust the relevant nut until the correct pressure is achieved.

14. Once the pressure has been set turn the boiler off and disconnect the pressure gauge.

15. Tighten the pressure test screw and refit the modulator to the valve. Reassemble in reverse order.

OUT

MIN

Pressure Test Point Sealing Screw

Central Heating

Temperature Control

Hot Water

Temperature Control

Fig. 37

Fig. 38

Fig. 39

Selector Switch

Minimum Pressure Screw

Gas Valve

Plastic Protection Cap

Modulator Wire

Maximum Rate Adjustment Nut

Minimum Rate Adjustment Nut

NOTE: Gas Valve Electrical Plug/Igniter not shown for clarity.

Performa 24 Eco HE

Reset

Burner On

Flame Failure

Power On

bar

10.0 COMPLETION

Publication No. 5111811

10.1 Completion

1. Hinge the facia panel upwards and engage the securing screws. Refit the case front panel and tighten the screws (Fig. 40).

2. Instruct the user in the operation of the boiler and system, explaining the operational sequence.

3. Carefully read and complete all sections of the Benchmark Commissioning Checklist at the rear of this publication that are relevant to the appliance and installation. These details will be required in the event of any warranty work. The publication must be handed to the user for safe keeping and each subsequent regular service visit recorded.

4. For IE, it is necessary to complete a “Declaration of Conformity” to indicate compliance with I.S. 813. An example of this is given in I.S. 813 “Domestic Gas Installations”. This is in addition to the Benchmark Commissioning Checklist.

5. Hand over the Users Operating, Installation and Servicing Instructions, giving advice on the necessity of regular servicing.

Fig. 40

Facia Panel

Case Front Panel

11.0 SERVICING THE BOILER

Publication No. 5111811

11 .1 Annual Servicing

1. For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person.

2. After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.

3. Ensure that the boiler is cool.

4. Ensure that both the gas and electrical supplies

to the boiler are isolated.

5. Slacken the screws securing the facia panel. Lift the outercase panel so that its securing tabs are clear of the facia. Remove the panel (Fig. 41).

6. Remove the screws securing the inner door panel. Lift the panel slightly to disengage it from the studs on top of the case (Fig. 43).

7. Note the positions of the three wires on the fan motor and remove them. Remove the sensing tube from the fan spigot (Fig. 42).

8. Slacken the screws on the fan spigot outlet pipe clamp. Ease the clamp inwards over the pipe.

9. Remove the four screws securing the combustion box door and remove the door (Fig. 43).

Fig. 41

Fig. 43

Facia Panel

Case Front Panel

Combustion

Box Door

Inner Door

Panel

Fan Wires

Fan

Sensing Tube

Ease Fan Spigot Outlet Pipe Clamp Inwards

Fan Spigot Outlet Pipe

Fig. 42

11.0 SERVICING THE BOILER

Publication No. 5111811

11.1 Annual Servicing (Cont)

10. Ease the front edge of the left hand baffle upwards, disengaging the spring clip. Disengage the tab on the baffle from the slot in the fan hood (Fig.44).

11. Undo the screws securing the fan hood assembly to the appliance back panel, and draw the fan and hood assembly forwards (Fig. 45).

12. Draw the burner out of the combustion box, pulling the electrode grommets from the slots in the combustion box lower panel (Fig. 46).

13. Disconnect the electrode leads and grommets from the electrodes. Completely remove the burner (Fig. 46).

14. Brush any deposits from the injectors. Do not use a pin or wire to clean them.

15. Brush the burner blades and venturis and clean the combustion box.

16. Ensure that the heat exchanger fins are clear of any obstruction.

NOTE: If necessary the secondary heat exchanger may be dismantled - see section 12.23

D.H.W. Filters (Fig. 48)

17. If the flow of domestic hot water is diminished, it may be necessary to clean the filters.

18. Initially check the cold water inlet tap filter.

19. Turn the tap off. Undo the blanking cap and remove the threaded bush (Fig. 47).

20. Extract the filter and rinse thoroughly in clean water. Reassemble and check the flow. If required clean the manifold filter as described below.

21. Undo the filter cartridge from the inlet/return manifold.

22. Dismantle the cartridge and carefully remove the flow regulator and filter gauze. Rinse them thoroughly in clean water and reassemble in reverse order.

23. Check that the pressure vessel charge is 0.5bar, reassemble in reverse order of dismantling.

24. Turn the selector switch fully anticlockwise against the spring pressure to position R and hold for 2 seconds to reset the boiler before recommissioning.

25. Complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication and then hand it back to the user.

Burner

Electrode

Grommets

Electrode

Leads

Inlet / Return Manifold

Cartridge

Body

Filter Gauze

Flow

Regulator

Venturi

Gas Supply Pipe

Blanking

Cap

Cold Water

Inlet Tap

Threaded

Bush

Fig. 46

Fig. 55

Fig. 48

Fig. 47

Spring Clip

Fan and Hood Assembly

Baffle

Tab

Fig. 44

Fig. 45

12.0 CHANGING COMPONENTS

Publication No. 5111811

IMPORTANT: When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started.

See Section 11.1 “Annual Servicing” for removal of case panel, door etc.

12.1 Fan (Figs. 50 & 51)

1. Note the positions of the three wires on the fan motor and remove them. Remove the sensing tube from the fan spigot.

2. Slacken the screws on the fan spigot outlet pipe clamp. Ease the clamp inwards over the pipe.

3. Remove the four screws securing the combustion box door and remove the door.

4. Ease the front edge of the left hand baffle upwards, disengaging the spring clip. Disengage the tab on the baffle from the slot in the fan hood.

5. Undo the screws securing the fan hood to the appliance back panel, and draw the fan and hood assembly forwards.

6. Remove the screws and spring washers securing the fan to the hood. Transfer the flue spigot outlet pipe to the new fan.

7. Fit the new fan to the hood using the screws and spring washers previously removed.

8. Reassemble in reverse order of dismantling.

12.2 Pressure Switch (Fig. 49)

1. Remove the fan as described in section 12.1.

2. Note the positions of the sensing tubes and wires and remove them.

3. Remove the two screws holding the pressure switch to the bracket on the combustion box top panel.

4. Fit the new pressure switch and reassemble all components in reverse order of dismantling.

Pressure Switch

Sensing Tubes

Pressure

Switch Wires

Fig. 49

Fan Hood

Spring Washer

Securing Screw

Fan Wires

Fan

Sensing Tube

Ease Fan Spigot Outlet Pipe Clamp Inwards

Fan Spigot Outlet Pipe

Spring Clip

Baffle

Tab

Fan

Fig. 50

Fig. 51

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.3 Heat Exchanger (Fig. 52)

1. Remove the fan as described in section 12.1.

2. Drain the primary circuit. Prise the pipe connecting clips off the joints in the flow and return pipes. Remove the heat exchanger return pipe.

3. Lift the heat exchanger to disconnect the flow pipe joint. Withdraw it from the appliance, taking care not to damage the rear insulation piece.

4. Fit the new heat exchanger, ensuring that the tabs on the side insulation carriers engage in the slots in the heat exchanger side plates.

5. Reassemble in reverse order of dismantling, and repressurise the system.

12.4 Burner (Fig. 53)

1. Remove the four screws securing the combustion box door and remove the door.

2. Draw the burner out of the combustion box, pulling the electrode grommets from the slots in the combustion box lower panel.

3. Disconnect the electrode leads and grommets from the electrodes. Completely remove the burner.

4. Undo the screws securing the electrodes to the burner. Examine the condition of the electrodes, replacing if necessary. Fit the electrodes to the new burner.

5. Engage the burner location brackets over the studs on the injector manifold and reassemble in reverse order.

Burner

Electrode

Grommets

Electrode

Leads

Electrodes

Pipe Connecting Clips

Heat Exchanger

Fig. 52

Fig. 53

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.5 Injectors (Fig. 54)

1. Remove the burner as described in Section 12.4.

2. Undo the screws securing the injector manifold to the inlet elbow and remove the manifold.

3. Unscrew and replace injectors as required and examine the sealing gasket, replacing as necessary. Reassemble in reverse order.

12.6 Electrodes (Fig. 54)

1. Remove the four screws securing the combustion box door and remove the door.

2. Draw the burner out of the combustion box, pulling the electrode grommets from the slots in the combustion box lower panel.

3. Disconnect the lead and grommet from the electrode being replaced. Undo the securing screw and withdraw the electrode to the burner.

4. Reassemble in reverse order.

12.7 Insulation (Fig. 55)

1. Remove the four screws securing the combustion box door and remove the door.

2. Slide the side insulation pieces carefully out of their carriers.

3. To replace the rear insulation piece it is necessary to remove the heat exchanger as described in Section 12.3 and slide out the side pieces.

4. The combustion box door insulation piece can be replaced by carefully bending up the two retaining tabs.

5. Replace all insulation pieces and reassemble in reverse order.

13.8

Injector

Manifold

Inlet Elbow

Gasket

Injector

Burner

Electrode

Grommets

Electrode

Leads

Side Insulation

Rear Insulation

Front Insulation

Combustion

Box Door

Side Insulation

Electrodes

Fig. 54

Fig. 55

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.8 Gas Valve (Fig. 56)

1. Undo the nut on the gas feed pipe at the tap rail under the boiler.

2. Completely undo the securing screws and hinge the facia panel down.

3. Disconnect the wires from the valve modulator and the ignition lead from the spark generator. Disconnect the pressure sensing pipe from the valve. Undo the screw securing the spark generator electrical plug to the valve and disconnect the plug.

4. Pull the earth wire off the spade terminal on the valve.

5. Remove the screws securing the inlet pipe flange to the tap rail and those securing the outlet manifold to the burner manifold.

6. Remove the valve from the boiler.

7. Note the orientation of the inlet pipe and outlet manifold. Undo the securing screws and remove the pipe and manifold.

8. Examine the ‘O’ ring seals for damage, replacing as necessary.

9. Fit the inlet pipe and outlet manifold to the new valve, ensuring that the ‘O’ ring seals are in place.

10. Reassemble in reverse order and check the burner pressure (Section 9.2).

12.9 Temperature Sensor (Fig. 57)

1. Ease the retaining tab on the sensor away and disconnect the electrical plug.

2. Unscrew the sensor from it’s pocket and reassemble in reverse order. The plug will only fit one way.

12.10 Safety Thermostat (Fig. 57)

1. Pull the two electrical connections off the thermostat.

2. Remove the screws securing the thermostat to the mounting plate on the flow pipe.

3. Reassemble in reverse order. The thermostat is not polarised - either wire can fit either terminal on the thermostat.

Gas Valve

Inlet Pipe

Gas Feed

Pipe

Electrical

Plug

Temperature

Sensor

Safety

Thermostat

Flow Pipe

Fig. 56

Fig. 57

Modulator

Wires

Ignition

Lead

Earth Wire

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.11 Pump - Head Only (Figs. 58 & 59)

1. Drain the primary circuit and remove the socket head screws securing the pump head to the body and draw the head away.

2. Undo the screw on the pump wiring cover and remove the cover. Using a suitable flat bladed screw driver press the cable securing levers downwards to release each wire after noting their position.

3. A standard Grundfos 15-60 replacement head can now be fitted. Connect the wiring to the new head. The pump speed must be set to 3.

4. Reassemble in reverse order.

12.12 Pump - Complete (Figs. 59 & 60)

1. Drain the primary circuit and unscrew the automatic air vent from the pump body. Undo the two screws securing the body to the pipe and manifold and draw the pump forwards.

2. Undo the screw on the pump wiring cover and remove the cover. Using a suitable flat bladed screw driver press the cable securing levers downwards to release each wire after noting their position.

3. Connect the wiring to the new pump. Examine the ‘O’ ring seals on the return pipe and manifold, replacing if necessary.

4. Fit the air vent to the pump body and reassemble in reverse order.

12.13 Automatic Air Vent (Fig. 60)

1. Drain the primary circuit and unscrew the automatic air vent from the pump body.

2. Examine the ‘O’ ring seal, replacing if necessary, and fit it to the new automatic air vent.

3. Reassemble in reverse order.

Pump Setting

Pump Wiring

Cover

Socket Headed

Screw

Pump Head

Pump Body

Pump Wiring

Cover

Automatic

Air Vent

Fig. 59

Fig. 60

Fig. 58

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.14 Pressure Gauge (Figs. 61 & 62)

1. Drain the primary circuit and undo the nut on the pressure gauge capillary.

2. Remove the timer cover and ease the timer wiring aside. Undo the screws securing the gauge retaining bracket.

3. Remove the bracket and gauge assembly. Depress the barbs on the side of the gauge and remove the retaining bracket.

4. Reassemble in reverse order.

12.15 Expansion Vessel (Fig. 63)

1. To replace the expansion vessel it is necessary to remove the boiler from the wall.

NOTE: Alternatively a vessel of equivalent capacity can be fitted on the system return pipe as close as possible to the boiler.

2. Drain the system and undo all gas, water and condensate drain connections. Remove the flue elbow.

3. Lift the boiler off the wall bracket and lay it on it’s side on a clean flat surface.

4. Undo the nut on the vessel outlet spigot, and remove the locknut and spring washer securing the spigot to the boiler chassis.

5. Undo the screws and remove the appliance upper cross member. Slide the expansion vessel out of the retaining clips.

6. Reassemble in reverse order. Fully recommission the appliance and system.

12.16 Condensate Trap (Fig. 64)

1. Disconnect the two sensing wires from the trap connections.

2. Squeeze together the wire spring clip to release and ease the inlet pipe from the trap spigot.

3. Undo the nut securing the condensate drain pipe to the trap. Disconnect the pipe and sealing washer.

4. From underneath the boiler remove the screws securing the trap bracket.

5. Remove the trap and bracket from the boiler. Undo the locknut securing the trap to the bracket.

6. Reassemble in reverse order.

Pressure Gauge

Timer Cover

Pressure Gauge

Capillary

Gauge Retaining

Bracket

Expansion Vessel

Retaining Clip

Vessel Outlet

Spigot

Boiler

Chassis

Lock Nut

Spring

Washer

Fig. 61

Fig. 62

Fig. 63

Fig. 64

Upper Cross

Member

Inlet Pipe

Sensing Wires

Condensate Trap

Wire Spring Clip

Bracket

Condensate Drain Pipe

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.17 Pressure Relief Valve (Fig. 65)

1. Drain the primary circuit.

2. Disconnect the discharge pipe from the valve. Using a suitable hexagon key undo the grub screw sufficiently to release the valve.

3. Note the orientation of the valve, rotate it and withdraw it from the manifold.

4. Fit the new valve and ‘O’ ring seal and set to the previously noted orientation. Reassemble in reverse order.

12.18 P.C.B. (Fig. 67)

1. Note the settings of the temperature control knobs. Rotate the knobs fully anticlockwise and pull them off the drive pins.

2. Completely undo the screws securing the control box cover and release the cover retaining barbs from their slots. Disengage the rear of the cover from the control box hinge pin (Fig. 66).

3. Note the position of all plugs and wires on the P.C.B. and disconnect them. Pull the drive pins off the P.C.B.

4. Undo the securing screws and remove the P.C.B.

5. Reassemble in reverse order, ensuring that the temperature controllers are reset to their previous positions.

12.19 Selector Switch (Fig. 67)

1. Note the setting of the selector switch knob and carefully pull it off the facia.

2. Completely undo the screws securing the control box cover and release the cover retaining barbs from their slots. Disengage the rear of the cover from the control box hinge pin (Fig. 66).

3. Note the position of the electrical connections and the orientation of the switch. Remove the electrical connections.

4. Remove the screws securing the switch to the facia panel.

5. Fit the new switch, ensuring that it is correctly positioned and reassemble in reverse order.

Pressure Relief Valve

Grub Screw

‘O’ ring seal

Discharge Pipe

Control Box Cover

P.C.B.

Selector

Switch

Facia

Selector Switch Knob

Temperature Control

Knobs

Fig. 65

Fig. 66

Fig. 67

Drive Pins

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.20 Plate Heat Exchanger (Fig. 68)

1. Drain the primary circuit.

2. While supporting the heat exchanger undo the screws securing it to the brass manifolds.

3. Withdraw the heat exchanger upwards and to the left of the gas valve, taking care not to damage any wires or controls.

Seals

4. There are four rubber seals between the manifolds and heat exchanger which may need replacement.

5. Ease the seals out of the manifold. Replace carefully, ensuring that when the seal is inserted into the manifold it is parallel and pushed fully in.

6. When fitting the new heat exchanger note that the left hand location stud is offset towards the centre more than the right hand one.

7. Reassemble in reverse order.

12.21 Diverter Valve Assembly (Fig. 69)

The diverter valve assembly comprises of a central heating pressure differential valve and a domestic hot water pressure differential valve. These are connected to a manifold which is joined to the plate heat exchanger.

DHW Pressure Differential Valve (Fig. 70)

1. Drain the primary circuit.

2. Undo the screw securing the microswitch bracket to the valve (Fig. 69).

3. Disconnect the two sensing pipes and slacken the grub screws securing the valve to the diverter manifold.

4. Draw the valve away from the diverter manifold. The valve may now be replaced or split to examine the diaphragm.

5. To examine the diaphragm hold the valve body securely and carefully remove the six screws. The diaphragm spring will force apart the two halves of the valve.

6. Remove the plastic disc and pushrod assembly. Carefully examine the diaphragm and replace it if there is any damage.

7. Reassemble in reverse order.

Plate Heat Exchanger

Rubber Seal

DHW Pressure

Differential Valve

Microswitch

Bracket

Grub Screws

Manifold

Sensing Pipes

Plastic Disc

Pushrod

Diaphragm

Spring

Diaphragm

Fig. 68

Fig. 69

Fig. 70

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.21 Diverter Valve Assembly (Cont)

CH Pressure Differential Valve (Fig. 71)

1. Remove the DHW pressure differential valve as described above.

2. From the brass diverter manifold undo the nut on the heating flow pipe. Remove the screw securing the diverter manifold to the appliance lower bracket.

3. Disconnect the pressure gauge capillary from the diverter manifold and remove the two wires from the microswitch.

4. Prise off the spring clip securing the by-pass pipe to the diverter manifold and disconnect the sensing pipe.

5. Ease the diverter manifold out of the plate heat exchanger manifold. Remove the assembly from the appliance.

6. Undo the screw securing the microswitch bracket to the valve body. The sensor may now be dismantled to examine the diaphragm.

7. To examine the diaphragm hold the assembly securely and carefully remove the four screws. The diaphragm spring will force the two halves of the valve apart.

8. Carefully examine the diaphragm and replace it if there is any damage.

9. Reassemble in reverse order.

CH Pressure Microswitch (Fig. 71)

1. Remove the two wires from the pressure microswitch.

2. Undo the screw securing the microswitch bracket to the valve body.

3. Reassemble in reverse order.

12.22 Flow Regulator (Figs. 71 & 72)

1. Undo the filter cartridge from the inlet/return manifold.

2. Unscrew the venturi and remove the flow regulator.

3. Check the cleanliness of the filter gauze, rinsing thoroughly in clean water as necessary. Fit the new flow regulator and reassemble in reverse order.

Pressure Gauge

Capillary

Heating

Flow Pipe

Spring Clip

By-pass

Pipe

Sensing Pipe

Diaphragm

Diverter Manifold

Microswitch &

Bracket

Fig. 71

Inlet / Return Manifold

Cartridge

Body

Filter Gauze

Flow

Regulator

Venturi

Fig. 85

Fig. 72

Central Heating

Pressure Differential

Valve

12.0 CHANGING COMPONENTS

Publication No. 5111811

12.23 Secondary Heat Exchanger (Fig. 73)

1. Drain the primary circuit

2. Undo the four screws securing the right hand case panel. Remove the panel.

3. Prise the connecting clips from the heat exchanger return pipe and the boiler return pipe. Remove the pipes.

4. Slacken the screws on the fan spigot outlet pipe clamp. Ease the clamp to the left. Undo the screw at the left hand end of the pipe.

5. Remove the nut securing the elbow to the secondary heat exchanger. Draw the elbow and outlet pipe forwards.

6. Remove the secondary heat exchanger from the outer drum by easing it forward.

7. Reassemble in reverse order of dismantling.

12.24 Flue Overheat Thermostat (Fig. 74)

NOTE: The flue overheat thermostat includes

a reset button. Check that the thermostat will not reset before replacing.

1. Remove the fan spigot outlet pipe from the fan and elbow.

2. Pull the two wires off the terminals on the flue overheat thermostat. Unscrew the thermostat from the adaptor in the outlet elbow.

3. Reassemble in reverse order of dismantling.

Ease Fan Spigot Outlet Pipe Clamp Inwards

Overheat Thermostat

Fan Spigot Outlet Pipe Clamp

Fan Spigot Outlet Pipe

Secondary Heat Exchanger

Outer Drum

Boiler Return Pipe

Pipe Connecting Clip

Elbow

Heat Exchanger Return Pipe

Fig. 73

Fig. 74

Fan Spigot Outlet Pipe

13.0 ELECTRICAL

Publication No. 5111811

br - brown bk - black b - blue r - red y - yellow g/y - green / yellow w - white gr - grey

13.1 Illustrated Wiring Diagram

Mains Input

Link

g/y

Pump

On/Off/Reset

Selector Switch

Optional Timers

Gas Valve

g/y

3-Way Valve

Microswitch

Fuse

Temperature Sensor

br b

bk br b

FA2

b b

Control PCB

bk bk

b br

r r r b

Hydraulic Differential

Pressure Switch

Flue Thermostat

Safety Thermostat

Air Pressure

Switch

Condensate

Trap

g/y

Fan

Flame

Sensing

Electrode

14.0 SHORT PARTS LIST

Publication No. 5111811

Short Parts List

Key G.C. Description Manufacturers No. No. Part No.

22 Fan 5112627

23 Pressure Switch 5112999

32 Heat Exchanger 5112431

41 Burner 5112770

44 E66 402 Injector - 1.18 NG 248210

59 E66 408 Electrode Lead 248037

63 E66 411 Spark or Sensing Electrode 247384

72 Pump Complete 248042

101 E66 432 Hydraulic Outlet Assembly 248061

102 E66 434 Valve - 3-Way Assembly 248062

103 343 619 Pressure Differential Assy 248063

131 Temperature Sensor 5108265

135 E66 697 Safety Limit Thermostat 248078

140 Gas Valve 5107339

154 PCB 5112657

169 E66 453 Pressure Gauge 248090

371 Igniter/Gas Valve Cable 5112385

A Flue Overheat Thermostat 5112395

140

154

135

101

102

103

169

131

371

15.0 FAULT FINDING

Publication No. 5111811

Carry out initial fault finding checks

1. Check that gas, water and electrical supplies are available at the boiler. Electrical supply = 230V ~ 50 Hz. CH water system pressurised to 0.5 bar when the boiler is cold. The preferred minimum gas pressure is 19.5mbar (natural gas), or 36mbar (propane).

2. Carry out electrical system checks, i.e. Ground Continuity, Resistance to Ground, Short Circuit and Polarity with a suitable meter. NOTE: These checks must be repeated after any servicing or fault finding.

3. Ensure all external controls are calling for heat and check all external and internal fuses. Before any servicing or replacement of parts ensure the gas and electrical supplies are isolated.

Refer to Section 13.1 “Illustrated Wiring Diagram” for position of numbered terminals Central Heating - Follow operational sequence

Turn selector to

neon illuminated

Primary flow switch

operated

Fan runs at max speed

Burner goes out

Turn thermostat

to max.

Pump runs

Air pressure

switch proved

illuminated

Burner on neon

illuminated

Burner output

modulates until set

temperature is reached

Spark at ignition

electrodes for up to 10

seconds

Go to section ‘A’

Go to section ‘B’

Go to section ‘C’

Go to sections ‘J’, ‘L’ &

‘D’

Go to section ‘E’

Replace PCB

Turn selector to the reset

position. If the light does

not extinguish go to

sections H & K

Go to section ‘F’

Go to section ‘I’

Go to section ‘G’

Fan stops Pump stops

Operation sequence

correct

Turn the selector switch

to the ‘Reset’ position and hold for at least 2

seconds. If regular

resetting is required, or

appliance still does not

operate, investigation is

necessary

External controls and,

where fitted, integral timer

calling for heat

Ensure controls are set to

demand and verify the

contacts are closed

Burner extinguishes

after 10 seconds

YES

YES YES YES

NO NO

YES

NOTE: When instructed to turn the Selector to the reset position turn the Selector Switch fully anticlockwise against the spring pressure and hold for 2 seconds to reset the boiler.

15.0 FAULT FINDING

Publication No. 5111811

Domestic Hot Water - Follow operational sequence

Turn selector to

neon illuminated

Primary flow switch

operated

Fan runs at max speed

Pump runs

Turn thermostat to

max. Open DHW tap fully.

DHW flow switch operated

Primary water is diverted

from CH system to DHW heat exchanger and flow

microswitch operated

Continuity across DHW

flow microswitch

terminals and PCB - M1

connector terminals 13 &

14 (terminals 12-14 open)

Air pressure switch

proved

neon illuminated

Burner on neon

illuminated

Spark at ignition

electrodes for up to 10

seconds

Go to section ‘A’

Go to section ‘B’

Go to section ‘C’

Go to section ‘J’, ‘L’ & ‘D’

Replace PCB

Turn the selector to the

reset position. If the light

does not extinguish go to

section H & K

Go to section ‘F’

Go to section ‘I’

DHW flow valve

senses no flow.

Primary water diverted to

CH system. DHW flow

switch released off

Close DHW tap

Burner goes out

Diverter valve spindle

assembly faulty

Pump stops

Operation sequence

correct

Turn the selector switch

to the ‘Reset’ position and hold for at least 2

seconds. If regular resetting is required, or appliance still does not operate investigation is

necessary

Go to section ‘E’

Burner extinguishes

after 10 seconds

YES

Fan stops

YES

DHW flow rate more than

2.5l/min.

Is mains water

filter and differential

assembly clean?

DHW flow valve

diaphragm damaged

DHW flow valve rod

obstructed

Replace DHW flow

microswitch

Replace PCB

Replace diaphragm

YES

Reduce the DHW flow

rate. If burner does not

modulate clean temperature sensor and DHW heat exchanger. If

modulation does not

occur go to section ‘G’

Burner output modulates

to maintain temperature

set at thermostat

15.0 FAULT FINDING

Publication No. 5111811

Fault Finding Solutions Sections A to E

Is there 230V at:

Main terminals L and N Check electrical supply

Main terminal fuse

Replace fuse

Replace PCB

neon

illuminated

YES

Selector terminals a & b and a & 3. PCB - M1 connector terminals 9 & 10

Check wiring Replace selector

Pump Replace pump

PCB - M1 connector terminals 8 & 15

Replace PCB

Change pump supply cable

YES

CH system pressure 0.5 to 1.5 bar Re-pressurise system

Primary flow valve diaphragm damaged

Replace diaphragm

Flow valve rod obstructed

YES

Check the tap of the automatic air vent is opened

Open the automatic air vent

YES

Continuity across flow microswitch and PCB M2 connector terminals 3 & 4

Replace microswitch

1. NO

Primary temperature sensor faulty. Cold resistance approx. 11K ohms (resistance reduces with increase in temp.)

Replace sensor

YES

Fan connections correct at fan. PCB - M5 connector, is 230V across terminals 28 & 29

Fan jammed or faulty winding

Replace PCB

Replace fan

YES

If pump jammed, release

15.0 FAULT FINDING

Publication No. 5111811

Check and correct if necessary

1. Electrical and pressure tube connections

2. Blockage of pressure tubes

3. Restriction in flue

4. Venturi

Replace air pressure switch

Gas at burner

Ensure gas is on and purged

Replace PCB

Replace gas valve

neon illuminated

PCB - M4 connector is approx 230V AC,

terminals 36 & 38

YES

Turn selector switch

to ‘Reset’ position

YES

Replace PCB

Check and correct if necessary

1. Ignition electrode and lead

2. Electrode connection

3. Spark gap and position

230V at Main PCB - M4 connector across terminals 37 & 38. Check wiring

YES

Replace gas valve

electrical

plug/igniter assy

YES

Check the burner setting pressure of

the gas valve

(see Section 9.2 of Commissioning)

Replace gas valve

Replace PCB

2. Voltage at modulating coil of gas valve is:

Max. burner press.approx 9V DC (13V DC LPG) Min. burner press.approx 1V DC

Current at modulating coil of gas valve is: (Use an instrument with average function for this measure) 30 ÷ 230 mA DC (45 ÷ 310 mA DC LPG)

15.0 FAULT FINDING

Publication No. 5111811

Check and correct if necessary

1. Flame sensing electrode and lead connections

2. Electrode position

Flame current should be 1 µA approx.

Replace PCB

Replace

PCB

YES

Replace flame sensing electrode

YES

Ensure that mains input

terminal L is Live (230V) and N

is Neutral (0V)

Check terminal 1 of ON/OFF/RESET selector is in connection with PCB - M1 connector terminal 16

Check electrical continuity across terminals 1 & a of

ON/OFF/RESET selector when turned to ‘Reset’ position

Replace ON/OFF/RESET selector

Replace PCB

YES

Replace boiler

overheat thermostat

YES

Boiler overheat thermostat

operated or faulty, i.e. continuity

across thermostat terminals

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

Press the reset button on the flue overheat thermostat. If

the boiler does not relight or repeatedly cuts out check

the operation of the flue system or replace the flue

overheat thermostat. If the flue overheat thermostat has

not been activated see section ‘D’

CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes

TIME & TEMPERATURE CONTROL TO HEATING ROOM T/STAT & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTAT

TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER

COMBI BOILER

HEATING ZONE VALVES FITTED NOT REQUIRED

HOT WATER ZONE VALVES FITTED NOT REQUIRED

THERMOSTATIC RADIATOR VALVES FITTED

AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED

FOR ALL BOILERS CONFIRM THE FOLLOWING

THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER’S INSTRUCTIONS?

THE SYSTEM CLEANER USED

THE INHIBITOR USED

FOR THE CENTRAL HEATING MODE, MEASURE & RECORD

GAS RATE ft3/hr

BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

CENTRAL HEATING FLOW TEMPERATURE °C

CENTRAL HEATING RETURN TEMPERATURE °C

FOR COMBINATION BOILERS ONLY

HAS A WATER SCALE REDUCER BEEN FITTED? YES NO

WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED?

FOR THE DOMESTIC HOT WATER MODE, MEASURE & RECORD

GAS RATE ft3/hr

MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

COLD WATER INLET TEMPERATURE °C

HOT WATER OUTLET TEMPERATURE °C

WATER FLOW RATE

lts/min

FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING

THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS? YES

FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING

THE HEATING AND HOT WATER SYSTEM COMPLIES WITH CURRENT BUILDING REGULATIONS

THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS

IF REQUIRED BY THE MANUFACTURER, HAVE YOU RECORDED A CO/CO2 RATIO READING? N/A YES CO/CO2 RATIO

THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER

THE MANUFACTURER’S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER

m3/hr

/hr

COMMISSIONING ENG’S NAME PRINT CORGI ID No.

SIGN DATE

BOILER SERIAL No. NOTIFICATION No.

BENCHMARK No.

GAS BOILER COMMISSIONING CHECKLIST

COLLECTIVE MARK

N/A

5111811

SERVICE 1

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 2

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 3

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 4

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 5

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 6

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 7

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 8

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 9

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 10

DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE INTERVAL RECORD

It is recommended that your heating system is serviced regularly

and that you complete the appropriate Service Interval Record Below.

Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service

as described in the boiler manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing all controls

Publication No. 5111811 - Iss. 4 (04/2006)

All descriptions and illustrations provided in this leaflet have been

carefully prepared but we reserve the right to make changes and

improvements in our products which may affect the accuracy of

the information contained in this leaflet. All goods are sold subject

to our standard Conditions of Sale which are available on request.

General Enquiries (GB)

Tel. 08706 060 780

Technical (GB)

Tel. 08706 049 049

Service (GB)

Tel. 08706 096 096 Fax. 01926 410 006

Literature Request (GB)

Tel. 08706 060 623

Technical (IE)

Tel. 1850 560570

BAXI Heating UK Brownedge Road Bamber Bridge Preston Lancashire PR5 6UP After Sales Service 08706 096 096 Technical Enquiries 08706 049 049 Website www.baxi.co.uk

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Baxi Potterton 24 Eco HE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual