Baxi Potterton 24 Eco HE User Manual

Installation & Service Instructions

Performa

24 Eco HE

Burner On

Reset

Flame Failure

Power On

bar

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 N^o3083” 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.

INSTALLER NOTIFICATION GUIDELINES

Choose Building

Regulations Notification

Route

Competent Person's

Building Control

Self Certification Scheme

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

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

Install and Commission this

appliance to manufacturer's

instructions

Scheme Members only

Complete the

Benchmark Checklist

Call CORGI on: 0870 88 88 777

or log onto:

www.corgi-notif y .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

LABC will record the data

and will issue a

compliance to the property

certificate of compliance

Publication No. 5111811

LEGISLATION

IMPORTANT - Installation, Commissioning, Service & Repair

Potterton declare that no substances harmful to

health are contained in the appliance or used

during appliance manufacture.

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.

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, this must be carried out by a competent person as stated in the Gas

Safety (Installation & Use) Regulations.

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.

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”.

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

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.

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.

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

All systems must be thoroughly flushed and

treated with inhibitor (see section 6.2).

supply conditions.

Codes of Practice, most recent version should

be used

In GB the following Codes of Practice apply:

Standard

BS 6891

BS 5546

Scope

Gas Installation.

Installation of hot water supplies for

domestic purposes.

BS 5449

BS 6798

BS 5440 Part 1

BS 5440 Part 2

BS 7074

Forced circulation hot water systems.

Installation of gas fired hot water boilers.

Flues.

Ventilation.

Expansion vessels and ancillary equipment

for sealed water systems.

Treatment of water in domestic hot water

central heating systems.

BS 7593

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,

In IE the following Codes of Practice apply:

Standard

I.S. 813

Scope

Domestic Gas Installations.

The following BS standards give valuable additional information;

Chineham Business Park,

Crockford Lane,

Basingstoke. RG24 8WG

BS 5546

Installation of hot water supplies for

domestic purposes.

Forced circulation hot water systems.

Expansion vessels and ancillary equipment

for sealed water systems.

BS 5449

BS 7074

BS 7593

Treatment of water in domestic hot water

central heating systems.

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

Publication No. 5111811

1.0 INTRODUCTION

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.

Case Front Panel

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.

Control Box

7. The boiler must be installed with one of the

purpose designed flues such as the standard

horizontal flue kit, part no. 5111073.

Fig. 1

8. All systems must be thoroughly flushed and

treated with inhibitor (see section 6.2).

Data Badge

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.

Publication No. 5111811

2.0 GENERAL LAYOUT

2.1

Layout

Air Pressure Switch

Expansion Vessel

Burner Manifold

Automatic Air Vent

DHW Plate Heat Exchanger

Circulation Pump

Drain Off Point

Pressure Relief Valve

Optional Integral Timer Position

Central Heating System Pressure Gauge

Control PCB

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

Control Box

3-Way Valve Assembly

Condensate Trap

Flame Sensing Electrode

Spark Electrode

Burner

Primary Heat Exchanger

Fan Assembly

Secondary Heat Exchanger

On / Off / Reset Selector Switch

Burner & Fault Indicator Neon

Power Neon

Flame Failure & Fault Indicator Neon

Central Heating Temperature Control

Hot Water Temperature Control

Fig. 2

Burner On

Flame Failure

Power On

Reset

bar

Performa 24 Eco HE

Fig. 3

Publication No. 5111811

3.0 APPLIANCE OPERATION

NOTE: All delay timers mentioned in 3.1 and 3.2

are overridden by domestic hot water demand.

Central Heating Circuit

3.1

Central Heating Mode (Fig. 4)

1. With a demand for heating, the pump circulates

water through the primary circuit. At a pre-

determined 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)

Fig. 4

1. Priority is given to the domestic hot water supply.

A demand at a tap or shower will override any central

heating requirement.

Key

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.

Primary Heat Exchanger

Burner

Ignition Electrode

Flame Sensing Electrode

Gas Valve

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

Pump

Automatic Air Vent

Plate Heat Exchanger

Flow Sensor with Filter

3. The burner will light automatically and the

temperature of the domestic hot water is controlled

by the temperature sensor.

10 Pressure Relief Valve

11 Boiler Drain Point

12 Heating Return

25 Overheat Thermostat

13 Cold Water Inlet On/Off Valve and Filter 26 Expansion Vessel

27 Secondary Heat Exchanger

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.

Domestic Hot Water Circuit

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.

Fig. 5

Publication No. 5111811

4.0 TECHNICAL DATA

Appliance Type

C₁₂

C₃₂

Electrical Protection

IPX4D

Central Heating Primary Circuit

Pressures

Appliance Category

CAT II

2H 3P

NO Class

bar

2.5

0.5

1-2

Safety Discharge

Max Operating

Min Operating

Heat Input CH

Condensate Drain

1” BSP

Max

Min

Flue Terminal

Diameter

100mm

125mm

24.8

10.6

Recommend Operating

Dimensions

Projection

DHW Circuit

Pressures

Max Operating

Min Operating

bar

Heat Output CH (Non-Condensing)

Max

Min

Connections

Gas Supply

Central Heating Flow

Central Heating Return

Cold Water Mains Inlet

DHW Flow

copper tails

22mm

15mm

0.2

9.8

Heat Output CH (Condensing)

Min Operating Pressure

at 11.1 l/min

Max

Min

0.9

25.2

10.1

15mm

Flow Rates

DHW Flow Rate

@ 30°CRise

l/min

Pressure Relief Discharge

Heat Input DHW

Max

Outercase Dimensions

Casing Height

Overall Height Inc Flue

Elbow

Casing Width

Casing Depth

11.5

9.8

24.8

780mm

DHW Flow Rate

@ 35°CRise

Heat Output DHW

Max

965mm

450mm

345mm

Min Working

DHW Flow Rate

2.5

Pump

Available Head

Max Gas Rate (Natural Gas - G20)

Clearances

See graph below

(After 10 mins)

Above Casing

Below Casing

Front

L.H. Side

R.H. Side

200 mm Min

m³/h

2.62

Expansion Vessel - (For Central Heating

only. Integral with appliance)

bar

450 mm Min (For Servicing)

5 mm Min (In Operation)

5 mm Min

5 mm Min (In Operation)

20 mm Min (See Note*)

Burner Pressure (Natural Gas - G20)

Max Rate

10.2 0.5

Min Rate

2 0.2

Min Pre-charge Pressure 0.5

mbar

litre

Inlet Pressure (Natural Gas - G20)

mbar 20

Max Capacity of

CH System

*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

125

1.0

Primary Water Content

of Boiler (unpressurised)

Burner Injector (Natural Gas - G20)

15 x 1.18mm Diameter

Electrical Supply

230V~ 50H

Temperatures

C.H. Flow Temp (adjustable)

(Appliance must be connected to an

earthed supply)

35°C to 85°C max ( 5°C)

Power Consumption

170W

D.H.W. Flow Temp

Weights

Packaged Boiler Carton

Installation Lift Weight

43.5

35°C to 65°C max ( 5°C)

dependent upon flow rate

External Fuse Rating

Internal Fuse Rating

Fuse 2A Fast Blow to BS 4265

SEDBUK Declaration For Performa 24 Eco HE

Pump - Available Head

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

4.5

Band B

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.

3.5

2.5

LPG Propane - G31

1.5

Burner Injector 15 x 0.77mm diameter

0.5

Burner Pressure

Propane

Max Rate Min Rate

mbar

21.8 0.5 4.4 0.2

200

400

600

800

1000

1200

Inlet Pressures

Flow Rate (l/h)

mbar

Publication No. 5111811

5.0 DIMENSIONS AND FIXINGS

Dimensions

A 780mm

B 345mm

C 450mm

D 116mm Ø Min.

E 185mm

360° Orientation

F 190mm

G 131mm

Tube Ø 100mm

Fig. 6

68mm

Gas Inlet

Heating

Flow

Domestic Hot

Water Outlet

Cold Water

Inlet

Heating

Return

95mm

65mm

265mm

165.7mm

View from under the appliance

Left Hand Side

of Boiler

130mm

Fig. 7

Publication No. 5111811

6.0 SYSTEM DETAILS

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.

Publication No. 5111811

6.0 SYSTEM DETAILS

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.

Double

Check

Valve

Stop

Valve

Stop

Valve

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.

Temporary

Hose

Return

DHW

Mains

Inlet

4. Your attention is drawn to:

Fig. 8

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”.

Pressure Relief Valve

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.

Fig. 9

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.

Discharge Pipe

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.

Publication No. 5111811

6.0 SYSTEM DETAILS

6.8

Domestic Hot Water Circuit

Other Tap

Outlets

1. All DHW circuits, connections, fittings, etc. should

be fully in accordance with relevant standards and

water supply regulations.

Boiler

Expansion

Vessel

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”.

Check

Valve

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.

Pressure

Reducing Valve

To Hot

Taps

Stop Tap

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

Fig. 10

an expansion vessel must be fitted (eg. Zilmet 160ml,

R / 15bar).

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.

Publication No. 5111811

7.0 SITE REQUIREMENTS

20mm/5mm Min

see *NOTE:

7.1

Location

450mm

5mm Min

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).

200mm Min

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.

780mm

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).

Burner On

Flame Failure

Power On

Reset

bar

7.2

Clearances (Fig. 11 & 12)

200mm Min

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

the boiler.

Fig. 11

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.

450mm Min

For Servicing

Purposes

5mm Min

In Operation

Fig. 12

Publication No. 5111811

7.0 SITE REQUIREMENTS

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.

Fig. 13

Gas Service Cock

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.

Publication No. 5111811

7.0 SITE REQUIREMENTS

7.6

Condensate Drain

Termination to an internal soil

Boiler

FAILURE TO INSTALL THE CONDENSATE DISCHARGE

PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE

OPERATION OF THE BOILER

and vent pipe

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 ( / in) 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.

450mm min

2. Ensure the discharge of condensate complies with any

national or local regulations in force.

External termination via internal

discharge branch

e.g sink waste - downstream

BS 6798:2000 & Part H1 of the Building Regulations

give further guidance.

Boiler

3. The discharge pipe should be run in a proprietary drain

pipe material e.g. PVC, PVC-U, ABS, PVC-C or PP.

Pipe must terminate

above water level but

below surrounding

surface

4. Metal pipework is NOT suitable for use in condensate

discharge systems.

Sink

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.

External termination to a drain or gully

Boiler

Pipe must terminate

above water level but

below surrounding

surface

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.

External termination to a purpose

made soak-away

Boiler

500mm min

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

Holes in the soak-away

must face away from the

building

iv) to a purpose made soakaway

Publication No. 5111811

7.0 SITE REQUIREMENTS

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.

B,C

H,I

Likely flue positions requiring

a flue terminal guard

Fig. 14

Terminal Position with Minimum Distance (Fig. 14)

(mm)

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

ventilation opening.

300

Below gutters, drain/soil pipe.

Below eaves.

Below balcony/car port roof.

From vertical drain pipes and soil pipes.

From internal or external corners.

Above adjacent ground or balcony level.

From a surface or boundary facing the terminal.

Facing terminals.

300 min

Terminal

Assembly

300

600

1200

1500

300

For opening (door/window) in car port into dwelling.

Vertically from a terminal on the same wall.

Horizontally from a terminal on the same wall.

Top View Rear Flue

M* Above an opening, air brick, opening window etc.

N* Horizontally to an opening, air brick, opening window etc.

300

Fig. 15

* 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.

Property Boundary Line

Publication No. 5111811

7.0 SITE REQUIREMENTS

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.

Fig. 16

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.

Fig. 17

Publication No. 5111811

7.0 SITE REQUIREMENTS

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

Vertical Concentric

Vertical Twin Pipe

4 metres

12 metres

4. Any additional “in line” bends in the flue system

must be taken into consideration.

Their equivalent lengths are:-

Horizontal

Flues

Concentric Pipes:

45° bend

93° bend

0.5 metres

1.0 metres

Twin Flue Pipe

45° bend

91.5° bend

0.25 metres

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.

Vertical

Flues

(Twin Pipe)

NOTE: Flue length is measured from point A to B

as shown.

Vertical

Flues

Publication No. 5111811

8.0 INSTALLATION

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).

190mm

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.

For Side Flue Exit

Fig. 18

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

Flushing Tube

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. 19

Central Heating Return

Publication No. 5111811

Wall Plate

8.0 INSTALLATION

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.

Fig. 20

Securing Screw

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.

Washer

7. Ensure that the sealing washers are used on all

connections. The rubber washers must be used on

the gas connections.

Fig. 21

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)

Pressure Relief Valve

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.

Fig. 22

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.

Discharge Pipe

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.

Publication No. 5111811

8.0 INSTALLATION

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 ( / in) 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.

Fig. 23

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).

Flue Elbow

Wall Thickness

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.

(X)

Adaptor

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.

Fig. 24

(X)

Wall Thickness

Fig. 25

Publication No. 5111811

8.0 INSTALLATION

8.7

Fitting the Flue (Cont)

Waste

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.

Flue

Fig. 26

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).

Inner Flue Support Bracket

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).

Fig. 27

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 Elbow

Flue Trim

Fig. 28

Publication No. 5111811

8.0 INSTALLATION

8.8

Making The Electrical Connections

Fig. 30

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).

Control Box Cover

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.

Fig. 29

Fig. 31

Facia Panel

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.

Cable Clamp

Frost Thermostat

Fuse

External Clock

g/y

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).

Fused supply 3A

230V ~ 50Hz

Always fit fast

blow 2A fuse

230 V

Live (brown)

Neutral (blue)

g/y

Earth (green/yellow)

Room Thermostat

230V

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.

NOTE: If the room thermostat being used

incorporates an anticipator it MUST be wired as

shown in Fig. 32.

Terminal Block

Fig. 32

IMPORTANT: The external control MUST be

suitable for 230V switching.

Functional Flow Diagram

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.

Pump

230 V

External

Controls

Pressure Switch

Fan

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.

Selector /

Reset Switch

Flue Thermostat

Safety Overheat Thermostat

NTC Sensor

PCB

Gas Valve Modulator

8.9

Preliminary Electrical Checks

Key to Wiring

b - blue

br - brown

bk - black

Spark Electrode

Gas Valve

1. Prior to commissioning the boiler preliminary

electrical system checks should be carried out.

Condensate Trap

- red

Flame Sensing Electrode

Fig. 33

g - green

w - white

2. These should be performed using a suitable meter,

and include checks for Ground Continuity,

Resistance to Ground, Short Circuit and Polarity.

Hydraulic Differential Pressure Switch

DHW Flow Priority Microswitch

Publication No. 5111811

9.0 COMMISSIONING

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.

Screw

Fig. 35

7. Pressurise the system to at least 0.5 bar then close

and disconnect the filling loop (Fig. 34).

Pressure Gauge

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”.

bar

Selector Switch

Fig. 34

9. Test for gas soundness.

Automatic Air Vent

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).

)

Burner On

Reset

Flame Failure

Power On

bar

Performa 24 Eco HE

Fig. 36

Central Heating

Hot Water

Temperature Control

Publication No. 5111811

9.0 COMMISSIONING

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).

Selector Switch

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.

Burner On

Flame Failure

Power On

Reset

bar

5. Turn the selector switch fully anticlockwise against

the spring pressure to the reset position and hold for

2 seconds to reset the boiler.

Performa 24 Eco HE

Fig. 37

Central Heating

Temperature Control

Hot Water

Temperature Control

6. Turn the selector switch to the Cental Heating and

Domestic Hot Water position (

light ( ) will illuminate (Fig. 37).

). The power ON

7. Turn on a hot water tap to give a flow rate of at

least 10 l/min.

Pressure Test Point

Sealing Screw

8. The pressure should be :-

Propane

10.2 mbar

21.8 mbar

If not, check that the gas supply pressure is correct

(Natural Gas 20mbar, and Propane 37mbar).

Gas Valve

Minimum

Pressure

Screw

9. The pressure can be adjusted if required.

10. To check and set minimum pressure first remove

one of the modulator wires.

Fig. 38

Adjusting the Pressure (Fig 39)

11. Remove the plastic protection cap from the

pressure adjustment nuts on the valve.

Plastic

12. The smaller nut (5mm) adjusts minimum pressure Protection

Cap

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 Modulator

Wire

and disconnect the pressure gauge.

Maximum Rate

Adjustment Nut

Minimum Rate

Adjustment Nut

15. Tighten the pressure test screw and refit the

modulator to the valve. Reassemble in reverse order.

NOTE: Gas Valve Electrical

Plug/Igniter not shown for clarity.

Fig. 39

Publication No. 5111811

10.0 COMPLETION

Case Front Panel

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.

Facia Panel

Fig. 40

5. Hand over the Users Operating, Installation and

Servicing Instructions, giving advice on the

necessity of regular servicing.

Publication No. 5111811

11.0 SERVICING THE BOILER

Case Front Panel

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.

Fig. 41

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).

Facia Panel

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).

Fan Wires

Fan

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.

Sensing

Tube

9. Remove the four screws securing the combustion

box door and remove the door (Fig. 43).

Ease Fan Spigot Outlet

Pipe Clamp Inwards

Fig. 42

Fan Spigot Outlet Pipe

Combustion

Box Door

Inner Door

Panel

Fig. 43

Publication No. 5111811

Baffle

11.0 SERVICING THE BOILER

Tab

Spring Clip

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).

Fig. 44

12. Draw the burner out of the combustion box,

pulling the electrode grommets from the slots in the

combustion box lower panel (Fig. 46).

Fan and Hood

Assembly

13. Disconnect the electrode leads and grommets

from the electrodes. Completely remove the burner

(Fig. 46).

Fig. 45

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.

Fig. 46

NOTE: If necessary the secondary heat exchanger

may be dismantled - see section 12.23

Electrode

Grommets

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

17. If the flow of domestic hot water is diminished, it

may be necessary to clean the filters.

Threaded

Bush

Fig. 47

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).

Burner

20. Extract the filter and rinse thoroughly in clean

water. Reassemble and check the flow. If required

clean the manifold filter as described below.

Electrode

Leads

Gas Supply Pipe

Blanking

Cap

Cold Water

Inlet Tap

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.

Cartridge

Body

23. Check that the pressure vessel charge is 0.5bar,

reassemble in reverse order of dismantling.

Filter Gauze

24. Turn the selector switch fully anticlockwise

Fig. 48

against the spring pressure to position R and hold for

2 seconds to reset the boiler before recommissioning.

Fig. 55

Inlet / Return Manifold

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.

Flow

Regulator

Venturi

Publication No. 5111811

12.0 CHANGING COMPONENTS

IMPORTANT: When changing components ensure

that both the gas and electrical supplies to the

boiler are isolated before any work is started.

Pressure

Switch

See Section 11.1 “Annual Servicing” for removal of

case panel, door etc.

Fig. 49

Sensing

Tubes

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.

Pressure

Switch Wires

Fan Wires

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.

Fan

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.

Sensing

Tube

6. Remove the screws and spring washers securing

the fan to the hood. Transfer the flue spigot outlet pipe

to the new fan.

Ease Fan Spigot Outlet

Pipe Clamp Inwards

7. Fit the new fan to the hood using the screws and

spring washers previously removed.

Fig. 50

8. Reassemble in reverse order of dismantling.

12.2

Pressure Switch (Fig. 49)

Fan Spigot Outlet Pipe

Baffle

1. Remove the fan as described in section 12.1.

2. Note the positions of the sensing tubes and wires

and remove them.

Tab

Spring Clip

3. Remove the two screws holding the pressure switch

to the bracket on the combustion box top panel.

Fan

4. Fit the new pressure switch and reassemble all

components in reverse order of dismantling.

Fan Hood

Fig. 51

Spring Washer

Securing Screw

Publication No. 5111811

12.0 CHANGING COMPONENTS

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.

Pipe Connecting Clips

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.

Fig. 52

2. Draw the burner out of the combustion box,

pulling the electrode grommets from the slots in the

combustion box lower panel.

Heat Exchanger

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.

Electrodes

Burner

Fig. 53

Electrode

Grommets

Electrode

Leads

Publication No. 5111811

12.0 CHANGING COMPONENTS

12.5

Injectors (Fig. 54)

Injector

Manifold

Inlet Elbow

1. Remove the burner as described in Section 12.4.

Injector

2. Undo the screws securing the injector manifold to

the inlet elbow and remove the manifold.

Fig. 54

3. Unscrew and replace injectors as required and

examine the sealing gasket, replacing as necessary.

Reassemble in reverse order.

Gasket

12.6

Electrodes (Fig. 54)

1. Remove the four screws securing the combustion

box door and remove the door.

Burner

Electrodes

2. Draw the burner out of the combustion box,

pulling the electrode grommets from the slots in the

combustion box lower panel.

Electrode

Grommets

3. Disconnect the lead and grommet from the

electrode being replaced. Undo the securing screw

and withdraw the electrode to the burner.

Electrode

Leads

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.

Side Insulation

Rear Insulation

5. Replace all insulation pieces and reassemble in

reverse order.

13.8

Side Insulation

Combustion

Box Door

Front Insulation

Fig. 55

Publication No. 5111811

12.0 CHANGING COMPONENTS

12.8

Gas Valve (Fig. 56)

Modulator

Wires

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

under the boiler.

Ignition

Lead

2. Completely undo the securing screws and hinge

the facia panel down.

Gas Valve

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.

Electrical

Plug

5. Remove the screws securing the inlet pipe flange

to the tap rail and those securing the outlet manifold

to the burner manifold.

Earth Wire

Inlet Pipe

6. Remove the valve from the boiler.

Gas Feed

Pipe

7. Note the orientation of the inlet pipe and outlet

manifold. Undo the securing screws and remove the

pipe and manifold.

Fig. 56

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).

Flow Pipe

12.9

Temperature Sensor (Fig. 57)

1. Ease the retaining tab on the sensor away and

disconnect the electrical plug.

Safety

Thermostat

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.

Temperature

Sensor

2. Remove the screws securing the thermostat to the

mounting plate on the flow pipe.

Fig. 57

3. Reassemble in reverse order. The thermostat is not

polarised - either wire can fit either terminal on the

thermostat.

Publication No. 5111811

12.0 CHANGING COMPONENTS

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.

Pump Wiring

Cover

Pump Body

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.

Socket Headed

Screw

4. Fit the air vent to the pump body and reassemble

in reverse order.

Pump Head

Fig. 58

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.

Pump Setting

Automatic

Air Vent

Fig. 59

3. Reassemble in reverse order.

Pump Wiring

Cover

Fig. 60

Publication No. 5111811

12.0 CHANGING COMPONENTS

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.

Fig. 61

3. Remove the bracket and gauge assembly.

Depress the barbs on the side of the gauge and

remove the retaining bracket.

Pressure Gauge

Capillary

Gauge 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.

Timer Cover

NOTE: Alternatively a vessel of equivalent

capacity can be fitted on the system return pipe

as close as possible to the boiler.

Pressure Gauge

Fig. 62

2. Drain the system and undo all gas, water and

condensate drain connections. Remove the flue

elbow.

Expansion Vessel

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.

Retaining Clip

Upper Cross

Member

5. Undo the screws and remove the appliance upper

cross member. Slide the expansion vessel out of the

retaining clips.

Fig. 63

6. Reassemble in reverse order. Fully recommission

the appliance and system.

Vessel Outlet

Spigot

Boiler

Chassis

12.16 Condensate Trap (Fig. 64)

Spring

Washer

Lock Nut

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.

Inlet Pipe

Sensing Wires

Wire Spring

Clip

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.

Condensate

Trap

5. Remove the trap and bracket from the boiler.

Undo the locknut securing the trap to the bracket.

Bracket

6. Reassemble in reverse order.

Fig. 64

Condensate

Drain Pipe

Publication No. 5111811

12.0 CHANGING COMPONENTS

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)

‘O’ ring seal

1. Note the settings of the temperature control

knobs. Rotate the knobs fully anticlockwise and pull

them off the drive pins.

Grub Screw

Pressure Relief Valve

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).

Fig. 65

Discharge Pipe

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.

Fig. 66

Control Box Cover

P.C.B.

12.19 Selector Switch (Fig. 67)

1. Note the setting of the selector switch knob and

carefully pull it off the facia.

Selector

Switch

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).

Drive Pins

3. Note the position of the electrical connections and

the orientation of the switch. Remove the electrical

connections.

Fig. 67

4. Remove the screws securing the switch to the

facia panel.

Facia

5. Fit the new switch, ensuring that it is correctly

positioned and reassemble in reverse order.

Selector Switch Knob

Temperature Control

Knobs

Publication No. 5111811

12.0 CHANGING COMPONENTS

Plate Heat Exchanger

12.20 Plate Heat Exchanger (Fig. 68)

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.

Rubber Seal

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.

Sensing Pipes

Manifold

DHW Pressure Differential Valve (Fig. 70)

1. Drain the primary circuit.

Microswitch

Bracket

2. Undo the screw securing the microswitch bracket

to the valve (Fig. 69).

Grub Screws

3. Disconnect the two sensing pipes and slacken the

grub screws securing the valve to the diverter

manifold.

DHW Pressure

Differential Valve

Fig. 69

Diaphragm

4. Draw the valve away from the diverter manifold.

The valve may now be replaced or split to examine

the diaphragm.

Diaphragm

Spring

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.

Plastic Disc

6. Remove the plastic disc and pushrod assembly.

Carefully examine the diaphragm and replace it if

there is any damage.

Pushrod

Fig. 70

7. Reassemble in reverse order.

Publication No. 5111811

12.0 CHANGING COMPONENTS

12.21 Diverter Valve Assembly (Cont)

Central Heating

Pressure Differential

Valve

Microswitch &

Bracket

CH Pressure Differential Valve (Fig. 71)

1. Remove the DHW pressure differential valve as

described above.

Sensing Pipe

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.

By-pass

Pipe

Diaphragm

3. Disconnect the pressure gauge capillary from the

diverter manifold and remove the two wires from the

microswitch.

Spring Clip

Heating

Flow Pipe

4. Prise off the spring clip securing the by-pass pipe

to the diverter manifold and disconnect the sensing

pipe.

Fig. 71

5. Ease the diverter manifold out of the plate heat

exchanger manifold. Remove the assembly from the

appliance.

Diverter Manifold

Pressure Gauge

Capillary

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.

Cartridge

Body

2. Unscrew the venturi and remove the flow regulator.

Filter Gauze

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.

Fig. 85

Inlet / Return Manifold

Flow

Regulator

Fig. 72

Venturi

Publication No. 5111811

12.0 CHANGING COMPONENTS

Secondary

Heat Exchanger

12.23 Secondary Heat Exchanger (Fig. 73)

1. Drain the primary circuit

Pipe Connecting Clip

2. Undo the four screws securing the right hand

case panel. Remove the panel.

Fan Spigot Outlet

3. Prise the connecting clips from the heat

exchanger return pipe and the boiler return pipe.

Remove the pipes.

Pipe Clamp

Outer Drum

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.

Boiler Return Pipe

Heat Exchanger

Return Pipe

5. Remove the nut securing the elbow to the

secondary heat exchanger. Draw the elbow and

outlet pipe forwards.

Elbow

Fan Spigot

Outlet Pipe

Fig. 73

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

Fan Spigot Outlet Pipe

Fig. 74

Overheat Thermostat

Publication No. 5111811

13.0 ELECTRICAL

13.1

Illustrated Wiring Diagram

Pump

Mains Input

Link

g/y

On/Off/Reset

Selector Switch

Fuse

Temperature Sensor

g/y

Hydraulic Differential

Pressure Switch

Flue Thermostat

Optional Timers

Gas Valve

Control PCB

Safety Thermostat

Air Pressure

Switch

3-Way Valve

Microswitch

g/y

FA2

Fan

g/y

Flame

Sensing

Electrode

Condensate

Trap

br - brown

bk - black

- blue

- red

- yellow

g/y - green / yellow

- white

gr - grey

Publication No. 5111811

14.0 SHORT PARTS LIST

140

Short Parts List

Key G.C. Description

No. No.

Manufacturers

Part No.

5112627

5112999

5112431

5112770

248210

Fan

Pressure Switch

Heat Exchanger

Burner

131

135

E66 402 Injector - 1.18 NG

E66 408 Electrode Lead

248037

E66 411 Spark or Sensing Electrode 247384

Pump Complete

248042

101

102

103

131

135

140

154

169

371

E66 432 Hydraulic Outlet Assembly 248061

E66 434 Valve - 3-Way Assembly

343 619 Pressure Differential Assy

Temperature Sensor

248062

248063

5108265

248078

5107339

5112657

248090

5112385

5112395

154

E66 697 Safety Limit Thermostat

Gas Valve

PCB

E66 453 Pressure Gauge

Igniter/Gas Valve Cable

Flue Overheat Thermostat

101

102

103

169

371

Publication No. 5111811

15.0 FAULT FINDING

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

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.

Turn selector to

neon illuminated

Go to section ‘A’

YES

Go to section ‘B’

YES

Turn

thermostat

to max.

External controls and,

where fitted, integral timer

calling for heat

Ensure controls are set to

demand and verify the

contacts are closed

Pump runs

YES

Primary flow switch

operated

Go to section ‘C’

YES

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 sections ‘J’, ‘L’ &

‘D’

Fan runs at max speed

YES

Air pressure

switch proved

Go to section ‘E’

YES

Spark at ignition

electrodes for up to 10

seconds

YES

Turn selector to the reset

position. If the light does

not extinguish go to

sections H & K

illuminated

YES

Replace PCB

Burner on

neon

Go to section ‘F’

Go to section ‘I’

illuminated

YES

Burner extinguishes

after 10 seconds

Burner output

modulates until set

temperature is reached

Go to section ‘G’

Fan stops

YES

Operation sequence

Burner goes out

Pump stops

correct

Publication No. 5111811

15.0 FAULT FINDING

Domestic Hot Water - Follow operational sequence

Turn selector to

neon illuminated

Replace diaphragm

Go to section ‘A’

YES

Is mains water

filter and differential

assembly clean?

YES

DHW flow valve

diaphragm damaged

YES

Turn

thermostat to

max. Open DHW tap fully.

DHW flow switch operated

DHW flow rate more than

2.5l/min.

DHW flow valve rod

obstructed

YES

Replace DHW flow

microswitch

Continuity across DHW

flow microswitch

terminals and PCB - M1

connector terminals 13 &

14 (terminals 12-14 open)

Primary water is diverted

from CH system to DHW NO

heat exchanger and flow

microswitch operated

YES

Replace PCB

YES

Pump runs

Go to section ‘B’

YES

Primary flow switch

operated

Go to section ‘C’

YES

Turn the selector switch

to the ‘Reset’ position

and hold for at least 2

seconds. If regular

Go to section ‘J’, ‘L’ & ‘D’

Fan runs at max speed

YES

resetting is required, or

appliance still does not

operate investigation is

necessary

Air pressure switch

proved

Go to section ‘E’

YES

Turn the selector to the

reset position. If the light

does not extinguish go to

section H & K

Spark at ignition

electrodes for up to 10

seconds

YES

neon illuminated

YES

Replace PCB

Burner on

neon

Go to section ‘F’

illuminated

YES

Burner extinguishes

after 10 seconds

Go to section ‘I’

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

YES

Close DHW tap

YES

DHW flow valve

senses no flow.

Primary water diverted to

CH system. DHW flow

switch released off

Diverter valve spindle

assembly faulty

YES

Operation sequence

Burner goes out

Fan stops

Pump stops

correct

Publication No. 5111811

15.0 FAULT FINDING

Fault Finding Solutions Sections A to E

Is there 230V at:

Main terminals L and N

Check electrical supply

Replace fuse

YES

Main terminal fuse

neon

illuminated

Replace PCB

Selector terminals a & b

and a & 3. PCB - M1

Check wiring

Replace selector

connector terminals 9 & 10

Is there 230V at:

Pump

If pump jammed, release

Replace pump

Replace PCB

PCB - M1 connector terminals 8 & 15

YES

Change pump supply cable

CH system pressure 0.5 to 1.5 bar

Re-pressurise system

Check the tap of the

automatic air vent is opened

Open the automatic air vent

YES

Primary flow valve diaphragm damaged

Replace diaphragm

Flow valve rod obstructed

Continuity across flow

Replace microswitch

Replace sensor

microswitch and PCB M2

connector terminals 3 & 4

Primary temperature sensor faulty.

Cold resistance approx. 11K ohms

(resistance reduces with increase in temp.)

YES

Fan connections correct at fan.

YES

PCB - M5 connector, is 230V

across terminals 28 & 29

Fan jammed or faulty winding

Replace PCB

Replace fan

Publication No. 5111811

15.0 FAULT FINDING

Check and correct if necessary

1. Electrical and pressure tube connections

2. Blockage of pressure tubes

3. Restriction in flue

Replace air

pressure switch

4. Venturi

Gas at burner

Ensure gas is on and purged

YES

PCB - M4 connector is approx 230V AC,

terminals 36 & 38

Replace gas valve

YES

Turn selector switch

to ‘Reset’ position

neon illuminated

Replace PCB

Check the burner setting pressure of

the gas valve

(see Section 9.2 of Commissioning)

Voltage at modulating coil of gas valve is:

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

Min. burner press.approx 1V DC

YES

Replace gas valve

Replace PCB

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)

Check and correct if necessary

1. Ignition electrode and lead

2. Electrode connection

Replace PCB

230V at Main PCB - M4

connector across terminals

37 & 38. Check wiring

YES

Replace gas valve

electrical

3. Spark gap and position

plug/igniter assy

Publication No. 5111811

15.0 FAULT FINDING

Ensure that mains input

terminal L is Live (230V) and N

is Neutral (0V)

YES

Check and correct if necessary

1. Flame sensing electrode and lead connections

2. Electrode position

YES

Replace PCB

Flame current should be 1 µA approx.

Replace flame sensing electrode

Boiler overheat thermostat

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

YES

Replace boiler

overheat thermostat

operated or faulty, i.e. continuity

across thermostat terminals

YES

Replace

PCB

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

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’

Publication No. 5111811

5 1 1 1 8 1 1

BENCHMARK No.

GAS BOILER COMMISSIONING CHECKLIST

C O L L E C T I V E M A R K

BOILER SERIAL No.

NOTIFICATION No.

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

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

PROGRAMMABLE ROOMSTAT

COMBI BOILER

HEATING ZONE VALVES

FITTED

NOT REQUIRED

HOT WATER ZONE VALVES

NOT REQUIRED

THERMOSTATIC RADIATOR VALVES

AUTOMATIC BYPASS TO SYSTEM

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

mbar

°C

m³/hr

N/A

BURNER OPERATING PRESSURE (IF APPLICABLE)

CENTRAL HEATING FLOW TEMPERATURE

CENTRAL HEATING RETURN TEMPERATURE

°C

FOR COMBINATION BOILERS ONLY

HAS A WATER SCALE REDUCER BEEN FITTED?

YES

WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED?

FOR THE DOMESTIC HOT WATER MODE, MEASURE & RECORD

GAS RATE

ft³/hr

mbar

°C

m³/hr

N/A

MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE)

COLD WATER INLET TEMPERATURE

HOT WATER OUTLET TEMPERATURE

WATER FLOW RATE

°C

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

COMMISSIONING ENG’S NAME PRINT

CORGI ID No.

DATE

SIGN

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

SERVICE 1 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

SERVICE 2 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 3 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

SERVICE 4 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 5 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

SERVICE 6 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 7 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

SERVICE 8 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 9 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

SERVICE 10 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

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

General Enquiries (GB)

Tel.

08706 060 780

Technical (GB)

08706 049 049

Service (GB)

Tel.

08706 096 096

Fax.

01926 410 006

Literature Request (GB)

Tel.

08706 060 623

Technical (IE)

1850 560570

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.

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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