Chaffoteaux & Maury Calydra green 24 User manual

CONDENSING WALL HUNG COMBINATION BOILER
Heating and Instantaneous Domestic Hot Water with TSS®
Fanned Flue System
Installation and Operating
Instructions
Calydra green 24
Calydra green 30
c
Manufactures N° Model Type Gas Council N°
200906823037.31 Calydra green 24 Nat 47-980-25
200906826037.31 Calydra green 30 Nat 47-980-26
GB IE

2
These instructions are suitable for the CALYDRA GREEN boilers :
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 commissioning 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.
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 bylaws 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 BG DM2.
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 exceed 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.
TO CONTACT C&M SERVICE, PLEASE CALL THE NATIONAL WARRANTY HELPLINE ON:
0 870 600 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.

3
CUSTOMER CARE Page
Guarantee ............................................................................................................................................................2
Statutory Requirements .......................................................................................................................................2
Contents ...............................................................................................................................................................3
INTRODUCTION ..................................................................................................................................................4
INSTALLER’S INSTRUCTION.............................................................................................................................5
1DESCRIPTION.................................................................................................................................................5
2 DIMENSIONS .................................................................................................................................................6
3 HYDRAULIC DATA .........................................................................................................................................6
4 INSTALLATION REQUIREMENTS .................................................................................................................7
Location ...................................................................................................................................................7
Flue..........................................................................................................................................................7
Ventilation ................................................................................................................................................7
Gas Supply .............................................................................................................................................7
Electrical Supply ....................................................................................................................................7
Showers...................................................................................................................................................7
Flushing and Water Treatment ...............................................................................................................7
System Controls ......................................................................................................................................7
5 INSTALLING THE BOILER .............................................................................................................................8
Method of positioning the boiler on th wall...............................................................................................8
Connecting the boiler to the system.........................................................................................................8
Safety valve and condensats drains ........................................................................................................8
Fitting the horizontal flue .........................................................................................................................8
6 ELECTRICAL CONNECTIONS ....................................................................................................................10
Making the Electrical Connections ........................................................................................................10
7COMMISSIONING AND TESTING................................................................................................................10
Pre-commissioning ................................................................................................................................10
DHW ......................................................................................................................................................10
Central Heating .....................................................................................................................................10
Lighting the boiler...................................................................................................................................10
By pass and pump .................................................................................................................................11
Post Commissioning ..............................................................................................................................11
Handing over to the Householder .......................................................................................................11
8FITTING THE CASING ..................................................................................................................................11
9ADJUSTEMENTS AND SETTINGS ..............................................................................................................12
10 INCORRECT FUNCTION .............................................................................................................................17
11 GAS CONVERSION .....................................................................................................................................17
Contents

4
USER’S INSTRUCTIONS Page
12- CONTROL PANEL ......................................................................................................................................18
13- HOW TO USE ..............................................................................................................................................19
Switching on ........................................................................................................................................19
Switching on Central heating ................................................................................................................19
Switching on the Domestic Hot water ...................................................................................................19
Switching on the Domestic Hot water and Central Heating together ....................................................19
Stand by mode ......................................................................................................................................20
Turn off the boiler ..................................................................................................................................20
14 MAINTENANCE ............................................................................................................................................20
15 GUARANTEE ................................................................................................................................................20
16 PRACTICAL INFORMATION ........................................................................................................................20
17 GAS CONVERSION .....................................................................................................................................21
18 INCORRECT FUNCTION .............................................................................................................................21
19 TECHNICAL DATA .......................................................................................................................................22
This instruction booklet is especially designed for appliances installed in the United Kingdom and the
Republic of Ireland
INTRODUCTION
The CALYDRA GREEN is a fully automatic, wall mounted, low water content condensing 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 600 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.

5
1.- Steel chassis complete with expansion vessel
2.- Sealed chamber
3.- Burner and heat exchanger assembly
4.- Air / gas connection
5.- 24 V modulating fan
6.- Gas valve
7.- Ignition electrode
8.- Ionisation probe
9.- Ignitor
10.- Combustion products manifold
11.- 24 V transformer
12.- Siphon
13.- Electrical box
14.- Pump
15.- Secondary heat exchanger
16.- Pressure gauge
17.- Three way valve
18.- Automatic air separator and automatic vent
19 - Central Heating flow switch
20.- Domestic Hot Water flow switch
21.- Central heating control thermistor
22.- Hot water control thermistor
23.- TSS Control thermistor
24 - Overheat sensor
25 - TSS ®(mini cylinder)
26 - DHW pressure relief valve
49 - Silencer.
1
INSTALLER’S INSTRUCTIONS
27.- Display
28.- Domestic Hot Water switch
29.- Green indicator – Domestic Hot Water mode
ON
30.- D.H.W. temperature reducing key
31.- D.H.W. temperature increasing key DHW
mode indicator
32.- Central Heating switch
33.- Green indicator – Central Heating mode ON
34.- Central Heating temperature reducing key
35.- Central Heating temperature increasing key
36.- Green indicator – Power ON
37.- Orange indicator - Burner ON
38.- Red indicator - Lock out / flame failure
39.- Reset key
1
2
3
4
5
6
8
11
12
13 14
7
Fig. 1
15
10
9
16
20
21
17
Fig. 2
19
22
23
24
25
26
38
33 27 29 30
28
37
31
Fig 3
36 39
3435 32
18
49
Description

6
0
4
3
2
1
5
6
100 200 800 700
600
500
400
300 900 10001100 l/h
mCE Débit mini (robinets thermostatiques fermés)
Hauteur manométrique
GVF
GVO
PVF
PVO
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)
C liter
2
3
Fig. 5
Fig. 6
440
450 mini pour entretien
With packaging :
24 48,5 kg
30 51 kg
54 54 54 54
JKLMN I
88
JK
L
MN
232
235
32
Safety valve
center line
All dimensions in mm
Fig. 4
Pump head chart available at the outlet of the boiler
System capacity chart
The boiler comprises a double speed pump and an
adjustable by-pass.
The chart (fig. 5) shows the pump head available regarding
the flow rate. GVF means high speed by-pass closed, PVF
means low speed by-pass closed, GVO means high speed
by-pass fully open, PVO means low speed by-pass fully
open.
For adjustment procedure, please refer to Section 8.
The minimum flow rate to ensure the correct functioning of
the boiler should be over 300 l/h (with thermostatic valves
fully closed).
Maximum water capacity of Central Heating system :
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 a greater capacity an additional expansion
vessel will be required. Refer to the chart (Fig. 6) and BS
7074 pt 1 or BS 5449.
The minimum initial pressure of the system should be over
0.7 bar (1 to 1.5 bar is recommended).
ISafety valve C/H and condensate
J Heating flow
K D.H.W. flow
L Gas supply
M Cold water inlet
N Heating return
minimum space required 450
Pump head available
Minimum flow rate (with all heating thermostatic valves closed)
Central heating initial pressure when cold (in bar)
Outer case dimensions :
- Width : 440 (minimum space required 450)
- Height : 850
- Depth : 380
Minimum clearances :
- Both sides 5 mm
- Above casing 170 mm
- Below casing 200 mm
- Front ( for servicing) 500 mm
- Front (in operation) 5 mm
212
360
67
737
850
24 : 380
30 : 405
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
Ø80 120 Ø 80
Type C 32 xx Type C 32 xy
250
Ø 80
250
Type C 13 Type C 33
Ø100
Type C 12
206
143
Ø125
Ø 80 120 Ø 80
Type C 32 xx Type C 32 xy
250
Ø 80
250
Type C 53
The boiler is suitable
for the flue types:
• type C 13
• type C 33
• type C 53
170
225
Dimensions
Hydraulic Data

7
4
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.
Avoid installing the boiler where the air inlet can be polluted
by chemical products such as chlorine (swimming pool area),
or ammonia (hair dresser), or alcalin products (launderette).
Flue
Detailed information on the 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.
Combustion system protection
The sulphur level contained in the gas should comply with
the European Standards which are :
- maximum 150 mg/m3for a short period in a year
- average level of 30 mg/m3during one year
Electrical Supply
The appliance requires an earthed 230V - 50 Hz supply and
must be in accordance with current I.E.E. regulations. 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.
The boiler is suitable for sealed systems only. The maximum
working 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 to
multiple outlets within the property. 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 may 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.
Fig. 7
A
B
GH
JC
LM
N
K
ID,E
F
Q
H
N
M
Q
Q
I
Installation Requirements

8
5
Please check that you are familiar with the installation requirements before commencing work (section 6).
The installation accessories described in the following list are included in the boiler packaging.
- Hanging bracket
- A paper template (showing the dimensions of the boiler with 5 mm side clearances, fitting instructions and commissioning
instructions)
- Connection tails
- Screws and wall plugs
- Connection washers and filters
- Installation manual
Method of positioning the boiler on the wall.
The paper template can be used to ensure the correct positioning of kitchen cabinets etc. It also details the commissioning
instructions.
The paper template has to be fixed to the wall and used to locate the position of the hanging bracket and the centre for the flue
hole.
Drill and plug the wall and secure the hanging bracket using the screws provided. Remove the boiler from its packaging as
shown (Fig. 8) and unscrew the 4 screws Aand remove the casing (Fig. 9).
Place the boiler on the wall on the hanging bracket (Fig. 11).
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
- Push in the tabs “P” (Fig. 13) on either side of the boiler and pivot the electrical box forward to gain access to the valve
connections
- Remove the yellow caps and connect the boiler to the taps using the washers provided in the plastic bag.
4 x fibre washers for the C.H. flow and return, hot water outlet and cold water inlet connections
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.
Before fitting the tails onto the connecting bracket, please check the correct location of the flow restrictor L (Fig.10) on the
main inlet.
Safety valve and condensate drains
The pressure relief valve tube is clear silicone. It should terminate below the boiler over a tundish or 22 mm pipe (see I Fig. 4)
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.
External termination via condensate siphon
The condensate drainage pipe should have a minimum diameter of 22 mm and the external pipe length should not be more
than 3m. The external length should be kept as short as possible to minimize the effect of freezing.
Please refer to BS 6798 : 2000
The system should be carefully checked for leaks, as frequent refilling could cause premature system corrosion or
unnecessary scaling of the heat exchanger. The pipe from the siphon 12 (fig. 1) should be connected to a drain in the
conditions described in the relevant Brittish regulations.
Pay special attention to not bend the condensates silicone drain pipe in such a way as to cause the flow to be interrupted.
Please use only drain pipe material compatible with condensate products. (refer to BS 6798 : 2000)
The condensate flow can reach 2 litres/hour; because of the acidity of the condensate products (Ph close to 2), take care
before operation.
Fitting the Horizontal Flue
Important!! Before starting the boiler, the siphon 12 (Fig. 1) must be filled with water. Before fitting the flue terminal
onto the boiler, please pour 1/4 litre of water in the exhaust pipe as shown (Fig. 12).
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 720 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 flue is a side exit installation, then calculate the position of the hole with a slope of 5 mm / metre towards
the boiler from the terminal. The flue should rise up slightly to the terminal in order to let the condensate come back into the
boiler.
Attention ! Use only specific condensation flue kit.
Installing the Boiler

9
5
A
Fig.11
AAA
Fig. 9
Fig. 10
L
Fig. 8
Fig.12
Installing the Boiler (continued)

10
Making the Electrical Connections
Hinge down the electrical box to gain access to the electrical connections. Push in the tabs P (Fig. 13) on either side of the
boiler and pivot the box forward. Undo the two retaining screws V, remove the cover and remove the cable clamp C (Fig. 14).
Connect the live and neutral wires to the multipin plug leaving sufficient earth wire to connect to the earthing point T (Fig. 14).
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, they can be connected in place of the link Son the multipin plug (see Fig.
14).
Note: Use only controls designed for voltage free switching or a 24V supply. Do not connect to a 230V supply.
Connect the multipin plug into the socket on the printed circuit board. Secure the cable using the cable clamp and
replace the cover. NB: The room thermostat options setting can be made before replacing the electrical box cover J1 (Fig.
14).
All necessary settings for room thermostat operations are described in Section 9 ADJUSTMENTS AND SETTINGS.
TR
COM
REP
8
M/A
VITESSE
1
1
1
1
1
1
BUS
1
CALYDRA
OFF ON
11
12
2
1.23
OFF ON
11
12 1
SW2
PROG
SW1
TA
1
T2A
1
MCD
1
230V
MOTEUR
RL6
R133
C28
T15
R36 R35
C80
C79
T16
R34
T12
T11
R107
R33
R130
R129
D43
U9
Z7A
R132
R16
R15
R14
C84
C83
R6a
Z4A
C78
RL13
C73
Z6
R7a
Z7
Z4
D46
T10
T9
RL8
RL7A
RL7
RL10
RL2A
RL2
RL9
R119
R118
R113
R9
R8
R7
R6
R31
R32
R29
R27
R25
R24
R23
R19
R18
R17
R140
R137
TH4
R13
R12
R11
R115
C82
C81
T14
T13
R136
TH3
U11
R64
R10
R63
R59
R128
R112
J9
J6
J7
J4
J3
J2
J1
F1
D5
D31
D30
D32
D42
D41
D40
D35
D36A
D36
D17
D16
D15
D14
J11
C34
J5
C52
C51
C75
C74
C31
C38
C27
C26
C25
C1
J12
U12
+5V
J
T

S
J 1
Fig. 14
6
J
T
C
S
7
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 43.
Open all hot taps to purge the DHW system.
Check for water soundness.
Check flow rate at the bath tap is set correctly (see technical data).
Central Heating
Open the flow and return valves on the boiler 40 and 44 (Fig. 15)
Open the automatic air vent 18 (Fig. 2)
Fill the system and vent radiators.
Set the system pressure and remove the filling loop.
Check for leaks.
Manually check pump is free to turn.
Switch on electrical supply.
Press on Central Heating switch 29 (Fig. 3) to switch on the heating
mode.
Press the +key 32 (Fig. 3) to set the heating temperature to
maximum.
Allow the pump to run for several minutes.
Isolate the 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 42 (Fig. 15).
Turn on the gas supply and boiler gas tap 42 (Fig. 15).
Ensure the electrical supply is on.
Ensure all the external controls are calling for heat.
Press on Central Heating switch 29 (Fig. 3) to switch on heating
mode.
Press on +key 32 (fig 3) to set heating temperature to maximum.
The boiler will light. Allow the boiler to heat the 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 the
paragraph Page 11).
Re-flush the system to remove any dissolved oils and fluxes.
Recharge the system pressure and introduce any water treatment as
required.
Fig. 13
P
V
P
Electrical Connections
Commissioning and Testing

11
7
By-Pass and Pump
The boiler is fitted with a pre-adjusted by pass. Although
adjustment is not normally necessary, the by-pass can be reset by
turning screw D (Fig. 15) anti-clockwise to open the by-pass using
the chart (Page 6, Fig. 5) for guidance. If used on a system with
thermostatic radiator valves, the flow rate with the thermostatic
valves closed should be adjusted to at least 300 l/hr. The
aforementioned chart indicates the residual head of the pump
available for the system. The pump fitted on the boiler is a double
speed model. (GV = High speed and PV = low speed). The speed
setting is described in Section 10. Speed selection is only
available in C.H. mode.
Post Commissioning
Ensure system pressure has been set correctly.
Set all parameters of the boilers as shown in Section 9
ADJUSTMENTS AND SETTINGS.
Set boiler thermostat and controls.
Set programmer to householder’s requirements.
Set external controls.
Ensure the Log Book 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 Log Book to confirm that
these demonstrations have been carried out and understood.
TT
1
2
Fig. 17
Fitting the casing
Remove the protecting film from the casing :
- Position the casing as shown (Fig. 17)
- Slide down the casing and put the casing holes on the plastic pins
located on the top of the chassis
- Check the correct position of the casing onto the boiler
- Tighten the 4 screws located at the bottom as shown in (Fig. 16).
8
AAAA
Fig.16
bar
0
13
4
Fig. 15
D
16
40 42 43 44
Commissioning and Testing (continued)
Fitting the Casing

12
The boiler is delivered with pre-set values described in menus 3 and 4.
All settings can be changed by the installer or a qualified person. To gain access to the setting keys, open the front door P
(Fig. 18)
DISPLAY
1st digit 2nd digit
3rd digit
Menu key
Setting key
To gain access to the setting menus press both the and keys on the D.H.W. side for 5 seconds. (Fig. 18). Menu 1 is
displayed.
Changing the menu :
Press the Menu key ( key on C.H. side) (Fig.18). The menu number is displayed for 3 seconds. Press the menu key to
change to the next menu.
Changing section in a menu (available only for menu 3 and 4) :
Press either the or key on the DHW side to change from one section to the previous or the next one in a menu.
Note : When you arrive at the last section of a menu, pressing the key will change to the the 1st section. When you
are at the first section, pressing the key will change to the last section of the menu.
Setting a parameter in a section:
Press the setting key ( key of the C.H. side) to enter the modification mode. The 2nd and 3rd digits will flash. Press the
or keys on the DHW side to select the correct value then press the Setting key to accept this modification and to exit
the setting mode. The 2nd and 3rd digits will stop flashing.
Recalling the basic configuration:
Select menu 3or 4then press both the key on the DHW side and the setting key for more than 5 seconds. The digits
will flash CM for a while to indicate that the operation is completed.
Erasing the default register :
Select menu 1then press both the key DHW side and setting key for more than 5 seconds. The digits will flash CM
for a while to indicate that the operation is completed. Note: To exit from the setting mode, leave the boiler for
approx. 1 minute, the boiler will then revert to the user mode.
DISPLAY
Fig. 18
P
D.H.W keys
C.H keys
9Adjustments and Settings

13
5 ” Menu - 1 - Default register
Records the last 10 defaults
Section Digit 1 Digits 2 and 3
Last default occured 0•code from 01 to 99
Last but one default occurred 1•code from 01 to 99
... ... code from 01 to 99
Last default occurred before the previous one 9•code from 01 to 99
DISPLAY
ACTION CONFIGURATION
once
x times
x times
Note -- is displayed if no default is recorded.
Menu - 2 - Boiler conditions
Indicates the conditions or the configurations of the boiler
Section Digit 1 Digits 2 and 3
Software version of display PCB 0•10 to 99
Flue type 2•1: FF
variable speed
Room thermostat is calling for heat 3•0: no
3•1: yes
Theoretical position of the 3 way valve 4•0: DHW
4•1: CH
DHW flow temperature in Celsius degrees 5•from 00 to 99
TSS®temperature in Celsius degrees 6•from 00 to 99
CH flow temperature in Celsius degrees 7•from 00 to 99
Software version of main PCB 9•10 to 99

14
Menu - 3 - Boiler options
DISPLAY
ACTION CONFIGURATION
Section Digit Digits
1 2 and 3
Under floor heating system 0 0: no
1: yes
DHW Delay 5 0 to 5 mn by step 0.5mn
(time before CH relights after a DHW cycle)
DHW flow swith Delay 6 0 to 20 1/10 seconds
(time before DHW flow detection to
override pressure peak problem)
Factory
setting
Menu - 4 - Boiler settings
Section Digit Digits
1 2 and 3
Room thermostat operation 0 0: Burner only
01: Burner and pump
Pump speed 10: High speed
11: Low speed
Pump post circulation duration 2 0.0 min
From 0 to 5 minutes by step of 0.5 min. 2 0.5 min
21.0 min
25.0 min
Maximum Central Heating flow temperature 4 50°C
480°C
CH anti cycling delay 8 0.0 min
From 0 to 7 minutes by step of 0.5 min. 8 0.5 min
82.5 min
85.0 min
CH maximum output limitation
Model 24
From step 0 (P. min.) 8 kW Value from
to step 10 (P. max.) 24 kW 9 0 to 10
Model 30
From step 0 (P. min.) 9 kW Value from
to step 10 (P. max.) 28 kW 9 0 to 10
Factory
setting
DISPLAY
ACTION CONFIGURATION
once
x times
once
x times

15
Menu - 5 - Combustion rate control mode
X X
X X
DISPLAY
ACTION CONFIGURATION
wait 5 ” Combustion rate control mode OFF
Switching on the combustion rate
control mode. Central heating
output reach the maximum power
set in menu 4 section 9.
Central heating temperature is
displayed in celsius degrees.
The 3 dots indicate that the
combustion rate control is ON at
maximum output.
Switching the combustion rate
down to minimum power.
Central heating temperature is
displayed in celsius degrees.
The dot indicates that the
combustion rate control is ON at
minimum output.
Switching on the combustion rate to
maximum output set in menu 4
section 9.
Central heating temperature is
displayed in celsius degrees.
The 3 dots indicate that the
combustion rate control is ON at
maximum output.
X X
Switching off the combustion rate
control mode.
press once
press once
press once
press once
Effect Display
Locking conditions of the combustion rate control mode :
- boiler in stand by mode
- D.H.W. draw off
- room thermostat is not calling for heat
- room thermostat is calling for heat but the maximum temperature is reached
- boiler in lockout mode
- after a reset or if the main supply fails
- end of the mode if the operator leaves menu 5
- after 15 minutes if there is no keys are pressed
Note : As soon as the combustion rate control mode is on, the Central Heating and Domestic Hot Water keys
become inactive.
press once

16
CH heat output setting :
If you would like to change the setting of the C.H. heat output, please proceed as follows :
(Note: the factory setting is 18 kW and the following explanation refer to menu 4 section 9)
- Switch to the installer mode, press
both the and keys on the
DHW side for 5 seconds.
The display shows :
-1- then 0•-- if there is no default in the
default register.
- press the menu key 3 times (on
CH side ) to gain access to menu -4-,
The display shows :
-4- then the value set for section 0 ( 00
or 01 respectively Action on burner only
or pump and burner)
- change to Section 9 (Adjustment of
C.H. heat output). Press the key
on the DHW side times.
The display shows :
(906 which corresponds to 18 kW
which is the factory setting)
9= section 9 06 = 18 kW
- press the setting key (on CH
side) once, the 2nd and 3rd digits flash
together. Then press the or
key on the DHW side to change the
C.H. heat output step between 00 and
10.
Press the setting key to confirm the
value. The display stops flashing. The
setting procedure is finished.
To exit from the setting mode, leave the
boiler for approx. 1 minute, the boiler
will then revert to the user mode.
After programming please close the
door P (Fig. 18)
1
Display
2x 3
1
2
or
33x 9
44
5 ”
9Adjustments and Settings (continued)

17
10
In case of problem, or when the boiler has to display a message, the display flashes 2 digits. Please refer to the table below
to diagnose the default.
For default 01 and 03, the red indicator 38 will light (Fig.19)
38
Fig. 19
Overheat lock out
FAULT
Code
display Fault description Information on functioning
01 Overheat lock out
03 No flame detection
05 Anti freezing system, pump on
06 Anti freezing system, pump and burner on
07 No water circulation in primary circuit
08 No water in the primary circuit
09 Domestic Hot Water thermistor faulty (open circuit)
10 Domestic Hot Water thermistor faulty (short circuit)
11 Central Heating thermistor faulty (open circuit)
12 Central Heating thermistor faulty (open circuit)
18 Attempt to re ignite
20 Wiring problem
23 Fan speed too low
24 Fan control system defective
25 Thermistor cylinder open
26 Thermistor cylinder bypassed
29 Three way valve blocked in CH mode
31 Communication problem with the display PCB
32 Communication problem with the main PCB
If the boiler is not set for the required gas type, conversion kits are available. To convert the boiler, please use only
Chaffoteaux & Maury parts and proceed as is mentioned in the instructions provided with the conversion kit.
11
Incorrect Function
Gas Conversion

18
USER’S INSTRUCTIONS
Control panel (fig. 20)
16.- Pressure gauge
27.- Display
28.- Switch for Domestic Hot Water mode
29.- Green indicator Heating / Domestic Hot Water mode ON
30.- Key to reduce the Domestic Hot Water temperature
31.- Key to rise up the Domestic Hot Water temperature
32.- Switch for Central Heating (Winter) mode
33.- Green indicator Central Heating mode ON RESET Reset
button
34.- Key to decrease the Central Heating temperature
35.- Key to increase the Central Heating temperature
36.- Green indicator - Power ON
37.- Orange indicator - Burner ON
38.- Red indicator - Lock out / flame failure
39.- Reset button
12
Connecting bracket
Taps shown in Open position (Fig. 21)
40 : Central Heating flow isolating valve
41 :Domestic Hot Water outlet
42 : Gas service tap
43 : Water service tap
44 : Central Heating return isolating valve
46 : Central Heating pressure relief valve
48 : D.H.W. drain screw
STOP
+
+
+ +
Fig. 21
40 44
43
42 46
41
48
16
27
30
29 28
32 31
33
34
35
37 38
39
36
Fig. 20
Control Panel

19
Switching on
1. Check that pressure in central heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16.
2. Check that the gas service tap is opened at the gasmeter and main power is on. Green indicator Power ON
36.
3. Open the gas tap 42 (Fig.21).
The boiler is now ready to use.
Attention ! If the boiler stays a long time without working, some air in the gas pipe can hinder the first lightings. (please refer
to Section 18 Incorrect Function).
Switching on the Central Heating
Press on key 32 , the green indicator 33 will light and the display will show the Heating
flow temperature.
Keys 34 and 35 allow the adjustment of the temperature required in the Central
Heating system dependent on the weather conditions.
• press to increase the temperature when the weather is cold
• press to decrease the temperature when the weather is fair
During the temperature setting operation the display will flash.
If the room thermostat is calling for heat, a dot will be displayed at the bottom of the 3rd digit
Switching on the Domestic Hot Water
Press key 28 , the green indicator 29 will light :
If there is no water demand
the display will show the following graphic
In case of draw off
a square made of 4 digits will move clockwise on the display
Keys 30 and 31 allow the adjustment of the temperature required for the Domestic Hot Water flow. During the
temperature setting operation the display will flash.
Note : The configuration of the C.H. system can generate some gravity effect when the boiler is set in DHW mode only. It may
result in a temperature rise of the heating pipes close to the boiler (or eventually a radiator). To avoid this it is possible during
the summer period (Central Heating switched off) To close the Central Heating flow isolating tap (40 Fig. 21). Don’t forget to
open it before switching on the Central Heating mode again.
13
Switching on the Domestic Hot water and Central Heating together
Press key 32 the green indicator 33 will light.
Press key 28 the green indicator 29 will light.
If there is no water demand the display will show the heating flow temperature
In case of draw off a square made of 4 digits will move clockwise on the display
How to Use

20
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 marked on the Log Book.
14
Turn off the boiler
- Press on key 32 and 28 , to switch off both DHW and CH mode. The green indicators 33 and 29 will go out
- Switch off the main electrical supply
- Shut off the gas service tap 42 (Fig. 21)
Note : In this condition, the anti-freeze system is inoperative.
Stand by mode A fixed digit at the centre of the display and the green indicator 36 on
Putting the boiler in stand by mode and anti freeze system. :
Press key 32 and 28 , to switch off both DHW and C.H. mode. The green indicators 39 and 29 will stop.
During the duration of the stand-by mode, an automatic anti-sticking system will switch on the pump for 1 minute
and activate the 3 way valve every 23 hours.
The stand-by mode will disable the anti-freeze function of the room thermostat (if fitted). To leave the room
thermostat anti-freeze system operative, please leave the Central Heating mode on.
The boiler is equipped with an automatic anti-freeze system which is permanently on.
If the Central Heating temperature falls below 7°C, the pump will start.
If the Central Heating temperature falls below 4°C, the pump and the burner will start.
13
15
The manufacturer`s guarantee is for 12 months from the date of purchase. The guarantee is voidable 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 with-
out delay.
16
Pump anti-sticking device
When the boiler is switched on, an automatic anti-sticking system will switch on the pump for 1 minute and make a movement
of the 3 way valve every 23 hours. This is a normal function.
Precaution to avoid freezing
We recommend you contact your installer or local service centre to take precautions adapted to your system.
• DHW system
Turn off the main cold water supply and drain the boiler :
- Open a hot water tap
- Unscrew the cold water inlet tail
- Drain the water out the boiler with the drain valve 48 (Fig. 21)
• C.H. system
Chose one of the following solutions :
- 1) Drain the Central Heating system completely
- 2) Protect the Central Heating system with anti-freeze chemical products and verify periodically the concentration
- 3) Leave the Heating mode switched on and set the room thermostat to anti-freeze mode (between 5 and 10°C)
- 4) Leave your boiler in stand-by mode, the anti-freeze device will switch on the pump and the burner if necessary.
How to Use (continued)
Maintenance
Guarantee
Practical Information