Chaffoteaux & Maury Britony SE 80 Nat User manual

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COMBINATION BOILER
Heating and Instantaneous Domestic Hot Water
Fanned Flue system
Installation and Operating instructions
These instructions Must Be Left With The Appliance.
Manufactures N° Model Type Gas Council N°
200906812037.31 Britony SE 80 Nat 47 - 980 - 16
200906812027.31 Britony SE 80 L.P.G. 47 - 980 - 18
200906813037.31 Britony SE 100 Nat 47 - 980 - 17
200906813027.31 Britony SE 100 L.P.G. 47 - 980 - 19
GB IE

2
These instructions are suitable for the following boilers :
Britony Combi SE. 80
Britony Combi SE.100
Do not forget the Log Book!
Chaffoteaux & Maury supports Benchmark, the heating industry code to ensure the correct installation, commissioning and
servicing of domestic central heating systems.
To The Householder
Make sure you have a completed Log Book for your boiler. This provides a record of the commissionning of your boiler.
It contains important information about your particular installation that may be required by service engineers. The Log Book
will also provide contact details for the installer should you need guidance in the use of this appliance or if there are any
problems.
As with your car, your boiler will work more reliably and efficiently if regularly serviced. We recommend an annual service
check. The service history of the appliance will be recorded on the Log Book.
In the unlikely event of any problems with your boiler or system you should first contact your installer. If your installer cannot
resolve the problem he should telephone our national service helpline.
A charge may be made if Chaffoteaux & Maury Service is called out to resolve a non-product related fault.
Your statutory rights are not affected.
TO CONTACT C&M SERVICE, PLEASE CALL THE NATIONAL WARRANTY HELPLINE ON:
0870 600 9888
To The Installer
As part of the commissioning of this appliance it is vital that the Log Book is completed and given to the Householder.
Please ensure that your customer is aware of the importance of keeping the Log Book safe as a record of the installation
and the appliance service history.
Please ensure that your customer is aware of the correct operation of the system, boiler and controls.
CUSTOMER CARE
Chaffoteaux & Maury Ltd., as a leading manufacturer of domestic and commercial water heating appliances is committed to
providing high quality products and a high quality after sales service. If it is necessary to contact an engineer, then
telephone the national warranty helpline 0870 600 9888.
Advice on installation or servicing can also be obtained by contacting the Technical Department on:
Tel: [phone]
Fax: [phone]
GUARANTEE
The manufacturer`s guarantee is for 12 months from the date of purchase. The guarantee is invalidated if the appliance is
not installed in accordance with the recommendations made herein or in a manner not approved by the manufacturer. To
assist us in providing you with an efficient after sales service, please return the guarantee registration card enclosed with the
boiler without delay.
STATUTORY REQUIREMENTS
The installation of this appliance must be carried out by a CORGI Registered person or other competent person and in
accordance with the requirements of the Gas Safety (Installation and Use) Regulations.
In addition, the installation must also comply with the current byelaws of Local Water Undertakings, Building Regulations,
IEE Wiring Regulations, Local Authority Building Standards (Scotland) Regulations and the Safety Document 635 The
Electricity at work Regulation. The appliance named below does not contain any asbestos or asbestos products, or mercury
derivatives. Additional CFC’s have not been used in this product.
The appliance does not contain any potential hazard in relation to the COSHH regulations.
It should also be carried out in accordance with current editions of the following British Standards Codes of practice: BS
6891, BS 5440 parts 1 and 2, BS 5449 part 1, BS 7593, BS 6798, BS 5546, BS 4814, BS 7074 part 1 and 2, BS 7671 and
Institute of Gas Engineers document IGE/UP/7.
If there is a possibility of the incoming mains water pressure exceeding 10 bar then a suitable pressure limiting valve must
be fitted where pressures exced 6 bars a pressure limiting is preferred.
Precautions: During servicing, keep the dust generation to a minimum and avoid inhaling any dust and contact with the skin
and eyes. Normal handling and use will not present any discomfort, although some people with a history of skin complaints
may be susceptible to irritation. When disposing of the ceramic lining, ensure that it is securely wrapped and wash hands
after contact.

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Page
CUSTOMER CARE............................................. 2
Guarantee............................................................ 2
Statutory Requirements...................................... 2
CONTENTS......................................................... 3
INTRODUCTION................................................. 3
DESCRIPTION.................................................... 4
Location of components ...................................... 4
TECHNICAL DATA.............................................. 5
DIMENSIONS...................................................... 5
OPERATION ....................................................... 7
Domestic Hot Water Mode .................................. 7
Central Heating Mode.......................................... 7
INSTALLATION REQUIREMENTS..................... 8
Location............................................................... 8
Flue...................................................................... 8
Ventilation............................................................ 8
Gas Supply.......................................................... 8
Electrical Supply.................................................. 8
INSTALLING THE BOILER ................................. 8
Installation ........................................................... 8
Method of positioning the boiler on the wall ........ 8
Connecting the boiler to the system .................... 9
Safety valve......................................................... 9
Fitting the horizontal flue ..................................... 9
Making the electrical connections........................ 9
Adjustement......................................................... 10
COMMISSIONING AND TESTING ..................... 11
Pre-commissioning.............................................. 11
Page
DHW.................................................................... 11
Central Heating.................................................... 11
Lighting the boiler ................................................ 11
Post Commissioning............................................ 11
Handing over to the Householder........................ 11
SYSTEM GUIDANCE.......................................... 12
Showers............................................................... 12
Flushing and Water Treatment............................ 12
System Controls .................................................. 12
Bypass and pump................................................ 12
Expansion Vessel................................................ 12
Filling Point.......................................................... 12
USER’S INSTRUCTIONS ................................... 13
Control panel ....................................................... 13
Isolating taps ....................................................... 13
Switching on ........................................................ 13
Hot water ............................................................. 13
Heating ................................................................ 13
To Turn boiler Off Completely ............................. 13
INSTRUCTION FOR SETTING THE BUILT
IN CLOCK............................................................ 14
General layout ..................................................... 14
To set the time..................................................... 14
To set the “On” and “Off” times............................ 14
To select function mode ...................................... 14
INCORRECT FUNCTION.................................... 15
NOTES ................................................................ 15
The BRITONY COMBI SE is a fully automatic, wall mounted, low water content combination boiler. It is a room
sealed, fan assisted, balanced flued appliance providing central heating and mains pressure domestic hot
water on demand. It has electronic ignition and is suitable for all modern electrical control systems. The boiler is
designed for sealed systems only and a circulating pump, expansion vessel together with a pressure gauge
and safety valve are included within the boiler.
The standard horizontal flue kit is suitable for lengths 300 mm minimum to 790 mm maximum and includes an
elbow adapter that can be rotated through 360°. The horizontal flue can extend up to 3 metres using 1 metre
flue extension kits. 45°and 90°flue bends are also available as accessories.
The BRITONY COMBI SE is also suitable for concentric vertical flueing and twin pipes. Adapters and
accessoiries are available.
The BRITONY COMBI SE is Specified for Natural Gas or for LPG. G30 or G31.
Conversions are factory fitted
Contents
Introduction

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Fig.1
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34
9
7
8
35
14
11
15
16
17
18
Fig.2
2
Location of components
1. - Air pressure switch
2. - Steel chassis complete with expansion vessel
3. - Main heat exchanger
4. - Combustion chamber
5. - Multi- gas burner assembly comprising ignition and
ionisation electrodes
6. - Automatic air separator and automatic vent
7. - Pump
8. - Electrical box
9. - Sealed chamber
10. - DHW detector
11. - Gas valve assembly
12. - CH water filter
13. - DHW activator
14. - Flue hood with fan
15. - Hot water control thermistor
16. - Central heating control thermistor
17. - Three way valve
18. - Secondary heat exchanger
19. - Two position Selector switch
OFF «O»
ON «I»
20. - Domestic hot water temperature adjustment
21. - Heating flow temperature adjustment
22. - Heating temperature indicator
23. - Green indicator - Power ON
24. - Orange indicator - Burner ON
25. - Red indicator - Lock out / flame failure
26. - Reset button
27. - Pressure gauge
28. - DHW mode indicator
29. - Heating mode indicator
30. - Heating Flow isolating valve
31. - Gas service tap
32. - Water service tap
33. - CH Return isolating valve
34. - Central Heating water pressure switch
35. -.Overheat safety cutout
36. - Flue sampling point
I
reset
Fig.3 19
20
21
23
25 22
26 24
27
10
28
29
13
30
31
33
32
12
6
36
Description

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Britony combi SE.80 SE.100
Appliance category Cat II 2H 3+ Cat II 2H 3+
Heat input C/H & DHW Gross
Maximum in kW 28.7 34.6
Maximum in Btu/h 98000 117900
Heat output C/H & DHW Gross
Maximum in kW 24 28
Maximum in Btu/h 81910 95600
C/H operating temperature
Max: 85° C 85° C
Mini: 35° C 35° C
C/H circuit pressures
Min operating in bar 0.7 0.7
in lb/in210 10
Max operating in bar 2.5 2.5
in lb/in236.3 36.3
DHW flow rates
∆T 30 in l/min 11.9 13.9
in gal/min 2.62 3.06
∆T 35 in l/min 10.2 11.9
in gal/min 2.24 2.62
Cold water mains pressures
Min operating in bar 0.5 0.5
in lb/in27.25 7.25
Max operating in bar 10 10
in lb/in2145 145
Flow limiter rate in l/min 8 10
Compartment ventilation n o t r e q u i r e d
Natural gas G20
10 minutes from lighting from cold
Gas rate
Maximum in m3/h 2.74 3.29
Maximum in ft3/h 97 116
Inlet pressure
Nominal in mbar 20 20
Nominal in in wg 88
Burner pressure
Nominal in mbar 11 12.8
Nominal in in wg 4.4 5.1
Burner injector diameter
Natural gas G20 in mm 1.23 1.28
Britony combi SE.80 SE.100
PROPANE L.P.G. G31
Gas rate
Maximum in kg/h 2.00 2.42
Maximum in ft3/h 37 44.8
Inlet pressure
Nominal in mbar 37 37
Nominal in in wg 14.8 14.8
Burner pressure
Nominal in mbar 35 30.4
Nominal in in wg 14 12.2
BUTANE L.P.G. G30
Gas rate
Maximum in kg/h 2.04 2.45
Maximum in Lbs/h 4.50 5.40
Inlet pressure
Nominal in mbar 28 28
Nominal in in wg 11.2 11.2
Burner pressure
Nominal in mbar 26,7 24
Nominal in in wg 10.7 9.6
Burner injector diameter
LPG G30 and G31 in mm 0.70 0.76
Safety discharge
in bar 3 3
in lb/in243.5 43.5
Expansion vessel
Pre-charge pressure in bar 0.7 0.7
Pre-charge pressure in lb/in210 10
Net capacity at 3 bar in liter 66
Automatic by-pass
Electrical characteristics
Supply 230 v 230 v
Consumption 150 w 150 w
Protection IP 44 IP 44
Fuse n°12 A 2 A
Fuse n°2 1.25 A 1.25 A
External controls 24 v 24 v
4
Weights
With packaging :
- Britony combi 80 : 44.2kg
- Britony combi 100 : 45.2kg
Without packaging :
- Britony combi 80 : 42.2kg
- Britony combi 100 : 43.2kg
Lift weight :
- Britony combi 80 : 36.2 kg
- Britony combi 100 : 37.2kg
Tails diameter
ISafety valve outlet ø15 mm
JHeating flow ø22 mm
KD.H.W. flow ø15 mm
LGas supply ø22 mm
MCold water inlet ø15 mm
NHeating return ø22 mm
Technical Data
Dimensions

6
4
54 54 54 54
JKLMN I
88
JK
L
MN
232
235
32
Fig. 4
212
360
67
721
850
380
50
Ø 100
Type C 12
206
143
Ø 125
Ø 80 120 Ø 80
Type C 32 xx Type C 32 xy
250
Ø 80
250
Ø 100
Type C 12
206
143
Ø 125
Ø 80 120 Ø 80
Type C 32 xx Type C 32 xy
250
Ø 80
250
Type C 12 Type C 32 xx
Ø 100
Type C 12
206
143
Ø 125
Ø 80 120 Ø 80
Type C 32 xx Type C 32 xy
250
Ø 80
250
Type C 32 xy, C52
The boiler is suitable for the flue types:
• type C 12
• type C 32 xx, C32 xy or C 52
Outer case dimensions :
-Width : 440 (minimum space required 450)
- Height : 850
-Depth : 380
All dimensions in mm
Safety valve
center line
Minimum clearances :
- Both sides 5 mm
- Above casing 170 mm
- Below casing 200 mm
- Front ( for servicing) 500 mm
- Front (in operation) 5 mm
Fig. 5 All dimensions in mm
Dimensions (continued)

7
Domestic Hot Water Mode
In order to supply hot water, the main switch 19 Fig. 6
must be in ON position IThis will be confirmed by the
green indicator light 23 Fig. 6. Turn the selector switch
20 clock wise to establish the green DHW indicator 28 Fig. 6.
When a tap or shower is turned on, the flow of mains
water, above 2 litres per min., will activate the 3 way valve
fFig. 7 to move to the DHW position. The pump will now
circulate primary water heated by the main heat exchanger
through the secondary heat exchanger.
The first stage solenoid aFig. 7 and safety solenoid c
Fig. 7 open together to allow gas to the burner. The
ignition sequence begins and a continuous high speed
spark ignites the gas. As soon as a flame is detected the
orange indicator bulb 24 Fig. 6 will light and the second
stage solenoid bFig. 7 opens to allow the full gas rate. If a
flame is not detected, after 8 seconds, the security
solenoid closes and shuts off the gas. The red lockout
indicator bulb 25 Fig. 6 will show. The domestic hot
water temperature is controlled by the hot water control
thermistor dFig. 7 and the central heating control
thermistor eFig. 7. This system anticipates the changes of
temperature in the secondary heat exchanger and ensures
accurate temperature regulation.
When the tap is closed the burner is extinguished and the
pump stops.
Priority will be given to a demand for hot water. This will
interrupt the central heating for the duration of hot water
delivery.
I
reset
19
23
25 22
26 24
5
Fig. 6
a b c
d
e
Fig. 7
Central Heating Mode
To be able to supply heating, the main switch 19 Fig. 6 must
be in Iposition. This will be confirmed by the green indicator
light 23 Fig. 6. Turn the selector switch 21 clock wise to
establish the green heating indicator 29 Fig. 6.
When there is a demand for heating (either from the room
thermostat or the clock) and the boiler temperature control is
calling for heat. The pump starts allowing the ignition
sequence to begin. The first stage solenoid aFig. 7 and
safety solenoid cFig. 7 open together to allow gas to the
burner. The ignition sequence begins and a continuous high
speed spark ignites the gas. As soon as a flame is detected
the orange indicator bulb 24 Fig. 6 will light. After 45
seconds the second stage solenoid bFig. 7 opens to allow
the full gas rate. If a flame is not detected, after 8 seconds,
the security solenoid closes and shuts off the gas. The red
lockout indicator bulb 25 Fig. 6 will show.
The central heating flow temperature is controlled by the
central heating control thermistor eFig. 7. The boiler has
been designed to minimise cycling and will not attempt to
relight for at least 3 minutes after the boiler thermostat has
been satisfied (it is possible to reduce the time to 30 s if
necessary). When the room thermostat is satisfied the
burner will switch off and the pump will remain running for a
further 4 minutes before it to stops.
NB : It is possible to override the 3 minute delay by pressing
the RESET button 26 Fig. 6.
28
29
21 20
f
Operation

Location
The boiler can be installed on any suitable internal wall. Provision
must be made to allow the correct routing of the flue and siting of the
terminal to allow the safe and efficient removal of the flue products. A
compartment or cupboard may be used provided that it has been
purpose-built or modified for the purpose. It is not necessary to
provide permanent ventilation for cooling purposes. Detailed
recommendations are given in BS 5440 pt 2. If it is proposed that it is
installed in a timber framed building then reference must be made to
British Gas Document DM2, or advice sought from CORGI.
Flue
Detailed information on flue assembly is contained in the appropriate
starter pack.
The boiler must be installed so that the flue terminal is exposed to
the free passage of external air at all times. It must not be allowed to
discharge into another room or space such as an outhouse or closed
lean-to. The minimum acceptable clearances are shown below:
- A Directly below an opening, window, etc 300 mm
- B Above an opening, window, etc 300 mm
- C Horizontally to an opening, window, etc 300 mm
- D Below gutters, soils pipes or drain pipes 75 mm
- E Below eaves 200 mm
- F Below balconies or car port roof 200 mm
- G From a vertical drain pipe or soil pipe 150 mm
- H From an internal or external corner 300 mm
- I Above ground roof or balcony level 300 mm
- J From a surface facing the terminal 600 mm
- K From a terminal facing the terminal 1200 mm
- L From an opening in the car port into the dwelling 1200 mm
- M Vertically from a terminal on the same wall 1500 mm
- N Horizontally from a terminal on the same wall 300 mm
- Q Fixed by Ubbink Rolux 4 GM flue terminal
It may be necessary to protect the terminal with a guard. Reference
should be made to the Building Regulations for guidance. Suitable
guards may be obtained from the following manufacturer:
Quinnel Barret & Quinnel Wireworks
Old Kent Road
London SE15 1NL
Tel: [phone]
Ventilation
The room in which the boiler is installed does not require specific
ventilation. If it is installed in a cupboard or compartment permanent
ventilation is not required for cooling purposes.
Gas Supply
The gas installation and soundness testing must be in accordance
with the requirements of BS 6891.The boiler requires a 22 mm
supply. Ensure that the pipe size is adequate for demand including
other gas appliances on the same supply.
Electrical Supply
The appliance requires an earthed 230V - 50 Hz supply and must
be in accordance with current I.E.E. It must also be possible to be
able to completely isolate the appliance electrically. Connection
should be via a 3 amp fused double-pole isolating switch with
contact separation of at least 3 mm on both poles. Alternatively, a
fused 3 Amp. 3 pin plug and unswitched socket may be used,
provided it is not used in a room containing a bath or shower. It
should only supply the appliance.
8
6
7
Please check that you are familiar with the installation
requirements before commencing work.(section 6)
Installation
The installation kit includes the flue components and the
flue installation instructions with the boiler you have the
following items :
- Hanging bracket
- A paper template (showing the dimensions of the boiler
with 5 mm side clearances and fitting instructions)
- Connection tails
- Screws and wall plugs
- Connection washers and filters
Method of positioning the boiler on the wall.
The paper template can be used to ensure the correct
positioning of kitchen cabinets etc.
The paper template has to be fixed to the wall and used to
locate the position of the hanging bracket, the centre for
the flue hole and, if required, the fixings for the pre-piping
jig.
Drill and plug the wall and secure the hanging bracket
using the screws provided. Remove the boiler from its
packaging as shown in fig. 9 and remove the outer case
as shown in fig.10.
Fig. 8
A
B
GH
JC
LMN
K
ID,E
F
Q
H
N
M
Q
Q
I
Installation Requirements
Installing the Boiler

9
Fig. 9
1
2
3
04
bar
AAAA
Place the boiler on the wall on the hanging bracket.
If required, there is space for all piping to pass behind the
boiler. Using fig. 11 for reference, connect the gas and
water pipes and the valves to the base of the appliance
using the tails provided. There is a 190 mm space
between the valves and the wall to make these
connections.
Connecting the boiler to the system
- Hinge down the front panel (fig. 11) to access to the
valve connections
- Remove the yellow caps and connect the boiler to the
taps using washers provided in the plastic bag
3 x fibre washers for the C/H flow, hot water outlet and
cold supply inlet
1 x washer mesh filter “F” CH return connection.
1 x rubber washer “R” for gas connection.
Provision must be made to fill and recharge the system
pressure. This can be achieved using a filling loop or other
methods approved by the local water authority.
Fig. 10
Fig. 11
7
Safety valve
The pressure relief valve tube is clear silicone. It should
terminate below the boiler over a tundish or 22 mm pipe
(see Ifig 12) which should in turn discharge safely outside
the premises. Care should be taken that it does not
terminate over an entrance or window or where a
discharge of heated water could endanger occupants or
passers by.
The system should be carefully checked for leaks, as
frequent refilling could cause premature system corrosion
or unnecessary scaling of the heat exchanger.
Fitting the Horizontal Flue
The instructions for the vertical and biflux (twin pipe) flue
options are included with the relevant adapter kits.
The standard flue supplied with the appliance is suitable
for lengths from 300 mm minimum to 790 mm maximum.
This means for rear flueing, the standard kit will
accommodate a maximum wall thickness of 600 mm, and
for side flueing a maximum wall thickness of 587 mm. This
takes into account the minimum appliance side clearances
of 5 mm.
If the fixing is a rear exit flue, the template provides the
position of the centre for drilling the flue hole with a core
drill.
If the flue is a side exit installation then calculate the
position of the hole with a slope of 5 mm / metre away
from the boiler to the terminal. The flue should fall slightly
to the terminal.
Making the Electrical Connections
Connect the live and neutral wires of the main cable. Note:
The connections should be made so that should the lead
be pulled from its anchorage, the current carrying wires
become taut before the earth wire.
If using a room thermostat or other external control, undo
the two retaining screws B, remove cover V (fig 15),they
can be connected in place of the link on the multipin
plug.“C”.
Connect multipin plug into the socket on the power board.
Replace the cover.
R
F
Fig. 12
I
Installing the Boiler (continued)

10
7
ADJUSTMENT
Choice of mode :
- Function without room thermostat bridge “S” remains in
place.
- Function with room thermostat remove bridge “S”, room
thermostat connected as shown on connector “C” (fig. 14).
The external control switches both burner and
pump. The external control switches the pump off after a
delay of 3 min 30’
Choice of boiler operation :
In order to make these adjustment you will need to access
the front of the electrical box.
Isolate mains electrical supply to boiler.
Remove boiler outer casing.
Remove rubber cover “D” (fig. 15) on face of electrical box.
Adjustment on the PCB Central Heating Mode (fig. 16) :
- P3 : potentiometer TAC (Temporisation Anti Cycle) may
now be adjusted between 30 seconds and 3 minutes
(see detail) (factory set at 3 minutes).
- JP3 : the spade connector (fig. 14) allows the gas rate to
be reduced to 1/3 performance by positionning
spade across pins as shown (fig. 14).
Full performance across pins as shown (fig. 14).
After completling adjustments replace rubber cover and
refit outer casing.
C10C10
C11C11
C38C38
F1F1 F1AF1A
J1J1
J2J2
J5J5
MV1MV1
R67R67
R72R72
R73R73
R75R75
R76R76
R85R85
12
HOR
NL
THERMOSTAT
N
L
J9
J10
J11
TA
24 V
230 V
P3
Fig. 16
D
Fig. 15
(P3-P4-P5)
mini maxi
B
V
P3
C10C10
C11C11
C38C38
F1F1 F1AF1A
J1J1
J2J2
J5J5
MV1MV1
R67R67
R72R72
R73R73
R75R75
R76R76
R85R85
12
HOR
P3
P4
P5
T
Fig. 13
S
T.A.
Connector C
main supply cable
Detail
P3
P3
1/3
3/3
Fig. 14
Room thermostat
P3
P3
1/3
3/3
Installing the Boiler (continued)

11
8
Pre-commissioning
Ensure that the system has been adequately flushed.
Purge gas supply of air and test for soundness.
Carry out final electrical tests to ensure the correct polarity
and earthing continuity.
DHW
Open the main cold feed valve.
Open all hot taps to purge DHW system.
Check for water soundness.
Check flow rate at the bath tap is set correctly (see
technical data).
Central Heating
Open flow and return valves on the boiler 30and 33(fig
17)
Open the automatic air vent 6(fig 17)
Fill system and vent radiators.
Set system pressure and remove filling loop.
Check for leaks.
Manually check pump is free to turn.
Switch on electrical supply.
Turn selector switch 19 (fig 18) to On position ITurn the
boiler thermostat to maximum.
Allow pump to run for several minutes.
Isolate electrical supply.
Drain boiler and check water filter for installation debris.
Replace filter and recharge system.
Lighting the Boiler
Connect gas pressure gauge to test point 11 (Fig. 18).
Turn on the gas supply and boiler gas tap 31 (Fig. 17).
Ensure electrical supply is on.
Ensure all external controls are calling for heat.
Turn selector switch 19 (fig. 18) to On position I
Turn the boiler thermostat to maximum 21 (fig 18).
The boiler will light.
Allow the boiler to heat system.
Check the inlet gas pressure (working pressure) while
boiler is operating in hot water mode.(Refer to technical
data).
Check the operation of the boiler controls and safety
devices.(see separate servicing leaflet for details)
Set the by pass (Refer to system guidance).
Re-flush the system to remove any dissolved oils and
fluxes.
Recharge system pressure and introduce any water
treatment as required.
Post Commissioning
Ensure system pressure has been set correctly.
Set boiler thermostat and controls.
Set programmer to householder’s requirements.
Set external controls.
Ensure the Logbook is fully completed with your contact
details and required readings and details of the
installation.
Handing Over to the Householder
Demonstrate the lighting and operation of the boiler.
Demonstrate how to maintain the system pressure.
Demonstrate the operation and setting of the built-in clock.
Explain the benefits of annual maintenance by a
competent person.
Explain how to register guarantee.
Ensure the Householder countersigns the Logbook to
confirm that these demonstrations have been carried out
and understood.
Fig. 17
31
Fig. 18
6
19
11
21
30 33
32
Commissioning and Testing

12
9
The boiler is suitable for sealed systems only. The
maximum cold water mains pressure for the appliance is
10 bar. All fittings and pipework connected to the
appliance should be of the same standard. If there is a
possibility of the incoming mains pressure exceeding 10
bar, particularly at night, then a suitable pressure limiting
valve must be fitted.
The boiler is designed to provide hot water on demand. If
there is a requirement for greater demands, for example if
the property has several bathrooms and cloakrooms, a
vented or unvented hot water storage system should be
used.
Showers
Any shower valves used with the appliance should be of a
thermostatic or pressure balanced type. Refer to the
shower manufacturer for performance guidance and
suitability.
Flushing and Water Treatment
The performance of the appliance could be impaired by
system debris or the effects of corrosion. The system must
be flushed thoroughly to remove metal filings, solder,
machining oils and other fluxes and greases before
connecting the boiler. If it is an existing system, an
appropriate flushing and descaling agent should be used.
Refer to BS 7593 (1992) for guidance. For more
information on the use of corrosion inhibitors, flushing and
descaling agents, advice can be sought from the
manufacturers of water treatment products such as:
Betz Dearborn Ltd
Foundry Lane
Widnes
Cheshire
WA8 8UD
Tel: [phone]
Fernox Manufacturing
Britannica Works
Clavering
Essex
CB11 4QZ
Tel: [phone]
System Controls
The boiler is electrically controlled and is suitable for most
modern electronic time and temperature controls. The
addition of such external controls can be beneficial to the
efficient operation of the system. The boiler connections
for external controls are 24V and so only controls of 24V
or that have voltage free contacts should be used.
By pass and Pump
The boiler is fitted with an automatic by pass. Although
adjustment is not necessary.
Expansion Vessel
The expansion vessel is pre-charged to 0.7 bar (10 lb/in2).
The vessel is suitable for systems up to 145 litres
capacity. For systems of greater capacity an additional
expansion vessel will be required. Refer to the chart below
and BS 7074 pt 1 or BS 5449.
Filling Point
Provision must be made to be able to charge the system
on commissioning and to make up any subsequent
pressure loss.
The method of connection must utilise approved
equipment and must comply with the water regulations. A
filling loop can be so installed as to be hidden beneath the
boiler.
20 40 60 80 100 120
Pf
140 160 180 200 220 240
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
1,7
1,8
1,9
2,0
Capacité maximale de l'installation (en litres)
80°C
70°C
60°C
50°C
40°C
260
Pression à froid pour le circuit chauffage (en bar)
Liters
Pressure System capacity chart
Fig. 21
System Guidance

13
10
I
reset
19
23
25 22
26 24
Fig. 22
28
29
Control panel
19. Two position Selector switch
O= Switched OFF
I=Switched ON
20. = Domestic hot water temperature adjustment
21. = Heating flow temperature adjustment
22. Heating temperature indicator lights
23. Green indicator - Power ON
24. Orange indicator - Burner ON
25. Red indicator - Lock out / flame failure
26 “RESET”Reset button
27. Pressure gauge
28. =- DHW mode indicator
29. =- Heating mode indicator
0
123
bar
Fig.23
30
31
33
32
2021
27
Switching on
1) Check that the gas service tap is opened at the
gasmeter and main power is on.
2) Check that pressure in central heating system is above
0.7 bar and below 1.5 bar with the pressure gauge 27.
3) Open the gas tap 31.
4) The boiler is now ready to use.
Hot Water
1) Turn main switch 19 to position I. The green "power
on" indicator 23 will light.
Turn the DHW thermostat clock wise 21. The DHW
indicator will light 28.
2) Turn on a hot water tap, the orange "burner on"
indicator will light
24 and the water will become hot.
Heating
1) Turn main switch 19 to on position I . The green "power
on" indicator will light 23.
Turn the CH thermostat clockwise 20. The CH indicator
will light 29.
3) If the room thermostat (if fitted), the boiler temperature
control and the clock (if fitted) are all calling for heat,
the orange "burner on" indicator will light and the
heating will be on.
When there is a need for hot water while the heating is on,
it is only necessary to turn on a hot tap. The heating will
be interrupted momentarily while the hot water is being
delivered. The boiler will switch back automatically to
heating when the tap is turned off.
Note: If the boiler has been turned off for some time the
first attempt to light it may result in a lockout . If this
happens press the reset button 25 and the boiler will light.
To Turn Boiler Off Completely
1) Turn the selector switch 19 to the off position O.
2) Turn the gas tap 31 OFF.
0
123
bar
Isolating Taps
(taps shown in Open position)
30. CH Flow isolating valve
31. Gas service tap
32. Water service tap
33. CH Return isolating valve
User’s Instructions

14
Fig. 24
11
1. General layout
The mechanical clock covers a 24 hour period. Each tappet
represents 15 minutes A(fig. 25). An override switch is
located on the clock B(fig 25).
2. To set the time
To set the time of day, grasp the outer edge of the dial and
turn slowly clockwise until the correct time is lined up with
the arrow C(fig. 25).
3. To Set the "On" and "Off" times
The clock uses a 24hours system. e.g. 8 =8.00 am and
18 = 6.00 pm "ON" periods are set by sliding all tappets
between the "ON" time and the "OFF" time to the outer edge
of the dial.The tappets remaining at the centre of the dial are
the "OFF" periods.
4. To select function mode
Put the selector switch Bto symbol to control the boiler
by the clock. Put the switch Bto «I» to select permanent
operation or to «0» to turn heating off permanently.
Fig. 25
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
99
66
1212
I
A
C
B
Instruction for Setting the Built in Clock (if fitted)

15
CODE FAULT
304050607080
mmmmmmmmmmllOverheat sensor switch open.
mmmmmmmmllmmOverheating defect without lock out.
mmmmmmmmllllNo flame detection.
mmmmmmllmmmmIonisation printed circuit board faulty.
mmmmmmllmmllAntifrost mode on (pump in operation).
mmmmmmllllmmAntifrost mode on (burner and pump in operation).
mmmmllmmmmllDomestic hot water thermistor faulty (open circuit).
mmmmllmmllmmDomestic hot water thermistor faulty (short circuit).
mmmmllmmllllCentral heating thermistor flow faulty (open circuit).
mmmmllllmmmmCentral heating thermistor flow faulty (short circuit).
mmllmmmmmmllLow water pressure in the Central Heating circuit.
mmllmmllmmllFan on but does not activate air pressure switch.
mmllmmllllmmFan off but air pressure switch fails to return to off position.
Incorrects functions is signalled by leds (rep 22) display flashing correspond with chart below.
12 Incorrect Function
Notes

1304415h - 12/2002
Chaffoteaux & Maury are continuously improving their products and therefore reserve the right to change specifications without
prior notice and accepts no liability for any errors or omission in the information contained in this document.
This appliance is suitable for Natural gas or LPG. A gas conversion must be made by a competent person.
Manufacturer: Chaffoteaux & Maury - France
Commercial subsidiary: MTS (GB) Limited
MTS Building
Hughenden Avenue
High Wycombe
Bucks HP13 5FT
Telephone: [phone]
Fax: [phone]
Internet: www.chaffoteaux.co.uk
E-mail: [email protected]
Technical Support Help Line: 0870 241 8180
Customer Service Help Desk: 0870 600 9888