Chaffoteaux & Maury Calydra comfort 80 User manual

COMBINATION BOILER
Heating and Instantaneous Domestic Hot Water with TSS®
Fanned Flue system
Installation and Operating
instructions
1
2
3
04
bar
1
2
3
04
bar
c
Calydra comfort 80
Calydra comfort 100
C
C
Manufactures N° Model Type Gas Council N°
200906789037.31 Calydra comfort 80 Nat 47 - 980 - 22
200906790037.31 Calydra comfort 100 Nat 47 - 980 - 23

2
These instructions are suitable for the following boilers :
Calydra comfort 80
Calydra comfort 100
Do not forget the Logbook!
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 Logbook 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 logbook 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 logbook.
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:
0 870 243 0224
To The Installer
As part of the commissioning of this appliance it is vital that the Logbook is completed and given to the Householder. Please
ensure that your customer is aware of the importance of keeping the Logbook 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 warrenty helpline 0870 243 0224.
Advice on installation or servicing can also be obtained by contacting the Chaffoteaux Customer Services Department at
Telford.
CUSTOMER SERVICES DEPARTMENT
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 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 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.

3
Contents
Page
CUSTOMER CARE............................................. 2
Guarantee ........................................................... 2
Statutory Requirements ..................................... 2
Contents.............................................................. 3
INTRODUCTION................................................. 3
DESCRIPTION.................................................... 4
Location of components ...................................... 4
TECHNICAL DATA ............................................. 5
DIMENSIONS ..................................................... 6
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................................. 9
Installation ........................................................... 9
Fitting the horizontal flue ..................................... 9
Making the electrical connections ....................... 10
SYSTEM GUIDANCE ......................................... 11
Showers .............................................................. 11
Flushing and Water Treatment............................ 11
Page
System Controls .................................................. 11
Bypass and pump................................................ 11
Expansion Vessel ................................................ 11
Filling Point .......................................................... 11
COMMISSIONING AND TESTING ..................... 12
Pre-commissioning .............................................. 12
Domestic Hot Water ............................................ 12
Central Heating.................................................... 12
Lighting the boiler ................................................ 12
Post Commissioning............................................ 12
Handing over to the Householder........................ 12
USER’S INSTRUCTIONS ................................... 13
Control panel ....................................................... 13
Isolating taps ....................................................... 13
Switching on ........................................................ 13
Hot water ............................................................. 13
Heating ............................................................... 13
Turn off the boiler ................................................ 13
INSTRUCTION FOR SETTING THE BUILT
IN CLOCK............................................................ 14
INCORRECT FUNCTION.................................... 15
By combining their modern highly efficient low water content fanned flue combination boiler concept and the brand new
TSS®“Temperature Stabilised System”, Chaffoteaux et Maury have created a whole new concept.
Calydra comfort
This unique combination is able to provide the user with hot water immediately at the outlet of the appliance and stable
temperatures at both extremely low flow rates or when several taps are opened together.
The TSS®is a 5 litres, independently controlled mini unvented storage cylinder, powered by a 3 kW coil. It works in
conjunction with the Chaffoteaux et Maury low pressure instantaneous domestic hot water system.
The Calydra comfort, as well as providing hot water, provides central heating. The boiler is designed for sealed systems only.
A one speed circulating pump, diverter valve, expansion vessel as well as a pressure gauge and safety valve are included
within the boiler.
The Calydra comfort provides the advantages of mains pressure hot water to taps and showers. Supplied directly from the
main water supply the Calydra comfort does not need a separate feed cistern or vent pipe in the loft space.
The Calydra comfort has been tested and approved by the WRc as meeting with the requirements of the water by-laws
scheme.
The boiler has been tested and approved to carry the CE mark.
The Calydra comfort can be installed with the standard horizontal flue, raised horizontal, concentric vertical, twin pipe flue or
seduct arrangements. Adapters, bends and other accessories are available on request.
The boiler is packed in TWO cartons:
1. The boiler.
2. The flue assembly and fixing kit.
1Introduction

4
2Description
Location of components
1. - Air pressure switch
2. - Steel chassis complete with expansion vessel
3. - Flue hood with fan
4. - Main heat exchanger
5. - Combustion chamber
6. - Multi- gas burner assembly comprising ignition and
ionisation electrodes
7. - Pump
8. - Central heating eating flowswitch
9. - Automatic air separator and automatic vent
10. - DHW detector
11. - Sealed chamber
12. - Electrical box
13. - Overheat safety cutout
14. - Gas valve assembly
15. - TSS ®(mini cylinder)
16. - Central heating control thermistor
17. - Three way valve
18. - TSS®control thermistor
19. - Domestic hot water flowswitch
20. - Secondary heat exchanger
21. - DHW pressure relief valve
22. - Taps bracket
23. - Two position Selector switch
OFF «O»
ON «I»
24. - Domestic hot water temperature adjustment
25. - Heating flow temperature control knob
26. - Heating temperature indicator lights
27. - Green indicator - Power ON
28 - Orange indicator - Burner ON
29. - Red indicator - Lock out / flame failure
30. - Reset button
31. - Pressure gauge
32. - DHW mode indicator
33. - Heating mode indicator
K. - flue kit fixing point (refer to kit manual)
15
16
17
22
19
10
18
8
21
Fig. 2
9
2
1
3
4
5
6
7
12
13
11
14
Fig. 1
K
I
reset
Fig.3
32
31
30
23
25
33
26
24
27
28
29
20

5
3 Technical data
Calydra comfort 80 100
Appliance category Cat Il 2H 3+ Cat Ii 2H 3+
Heat Gross input C/H & DHW
Maximum in kW 28.7 34,6
Maximum in Btu/h 98000 117900
Heat output C/H & DHW
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
@ AT 30 K in l/min 11.9 13.9
in gal/min 2.62 3.06
@ AT 35 K in l/min 10.02 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 810
Compartment ventilation not required
Natural gas G20
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
Calydra comfort 80 100
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 33
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°1 2 A 2 A
Fuse n°2 1.25 A 1.25 A
External controls 24 v 24 v

6
4Dimensions
All dimensions in mm
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
Fig. 4
Type C 32 xxType C12, C42 or C22 Type C 32 xy
The boiler is suitable for the 3 flue types:
• Type C 12 or C 42
• Type C 22
• Type 32 xx
• Type C 32 xy
Weights
With packaging :
- Calydra comfort 80 : 39,5kg
- Calydra comfort 100 : 40,5kg
Without packaging :
- Calydra comfort 80 : 37,5kg
- Calydra comfort 100 : 38,5kg
Lift weight :
-Calydra comfort 80 : 31,5 kg
- Calydra comfort 100 : 32,5kg
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
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
JKLMN I
54 54 54 54 68
360
26050 50
738
850
380
212
Safety valve
center line

7
Domestic Hot Water Mode
In order to supply hot water, the main switch 23 (fig. 5) must
be in ON position IThis will be confirmed by the green
indicator light 27 (fig. 5). Turn DHW temperature
adjustment knob 24 clock wise to establish the green DHW
indicator 32 (fig. 5).
The hot water temperature in the mini cylinder can be
adjusted between 40 and 60°C using control knob 24 (fig 5).
When a tap or shower is turned on, the flow of mains water,
above 2 litres per min., will activate the 3 way valve 17
(fig. 2) 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 a(fig. 6) and safety solenoid c(fig. 6)
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 28 (fig. 5) will light and the second stage solenoid b
(fig. 6) 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 29 (fig. 5)
will show. Over 2 l/min, the domestic hot water temperature
is controlled by the hot water control thermistor d(fig. 6) and
the heating control thermistor e(fig. 6), but dependant upon
to the position of the DHW temperature adjustment knob 24
(fig. 5). 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. (unless the mini cylinder thermistor is calling for
heat, in which case the burner will remain on at a low rate
and the pump will continue running until the mini cylinder
thermistor is satisfied). The boiler will now stay in the hot
water mode for 30 seconds to be ready for a subsequent
draw off
Priority is given to a demand for hot water. This will interrupt
the central heating for the duration of hot water delivery or
recovery of the mini cylinder.
When the boiler has been in standby in Hot Water Mode for
some time or when drawing DHW at flow rates of less than
2 l/min the temperature in the mini cylinder will eventually
decrease and the TSS®control thermistor f (fig. 6) will call for
heat. Bringing the pump and burners to operate, until the
cylinder thermistoris satisfied. this is quite normal.
5Operation
Fig.5
Fig. 6
Central Heating Mode
To be able to supply heating, the main switch 23 (fig. 5) must be in
Iposition. This will be confirmed by the green indicator light 27
(fig. 5.) Turn the temperature control knob 25 clock wise to
establish the green heating indicator 33 (fig. 5).
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 a(fig. 6) and safety solenoid c(fig.
6) 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 28 (fig. 5) will
light. After 45 seconds the second stage solenoid b(fig. 6) 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 29 (fig. 5) will show.
The central heating flow temperature is controlled by the central
heating control thermistor e(fig. 6). 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 30 (fig. 5).
abc d
e
I
reset
32
31
30
23
25
33
26
24
27
28
29
f

8
6Installation requirements
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 dwelling1200 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.
Fig. 7
A
B
GH
JC
LM
N
K
ID,E
F
Q
H
N
M
Q
Q
I

9
Fig. 8
1
2
3
04
bar
Fig. 9
7Installing the boiler
Fig. 10 L
AAAA
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 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 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.
Place the boiler on the wall on the hanging bracket. Using (fig. 16) 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
Attention ! Connecting tails are delivered with the boiler. You could ask your local dealer or Chaffoteaux et Maury Ltd for first
installation tails kit or to replace existing boilers such as old Chaffoteaux et Maury models.
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 drains
The pressure relief valve tube is clear silicone. It should terminate below the boiler over a tundish or
22 mm pipe (see Ifig 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.
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 should be connected to a drain is the conditions described in the
relevant Brittish regulations.
Please check that you are familiar with the installation requirements before commencing work.(section 6)
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 in fig. 9 and remove the outer case as shown in fig.10.

10
Installing the boiler (continued)
8
ADJUSTMENT
Choice of mode :
- Function without room thermostat bridge Sremains in place.
- Function with room thermostat remove bridge S, room thermo-
stat connected as shown on connector D(fig. 11).
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 E(fig. 12) on face of electrical box.
Adjustment on the PCB Central Heating Mode (fig. 13) :
- 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.
C10
C11
C38
F1 F1A
J1
J2
J5
MV1
R67
R72
R73
R75
R76
R85
P3
Fig. 13
Fig. 12
(P3-P4-P5)
mini maxi
P3
Detail
P3
3/3
P3
1/3
J1
J2
S
Connector D
T.A.
main supply cable
Room thermostat
Fig. 11
C
E
B
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 C (fig 12),they can be
connected in place of the link on the multipin plug.D.
Connect multipin plug into the socket on the power board.
Replace the cover.
Fig. 14

11
9System guidance
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
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. 15

12
10 Commissionning and testing
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 34 and 38 (fig 16)
Open the automatic air vent 9(fig 16)
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 23 (fig 17) to position I
Turn 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 14 (Fig. 16).
Turn on the gas supply and boiler gas tap 36 (Fig. 16).
Ensure electrical supply is on.
Ensure all external controls are calling for heat.
Turn selector switch 23 (fig. 17) to position I.
Turn the boiler thermostat to maximum 25 (fig 17).
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.
Detail for the adjustment of the by-pass
Fig. 16
34 35 36
41
37 38 39
40
42
P
P
E
E
Cut of screw on -:
by pass shut
Cut of screw on +:
by pass open
9
14

13
11 User’s instructions
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 31.
3) Open the gas tap 36.
4) The boiler is now ready to use.
Hot Water
1) Turn main switch 23 to position I. The green "power on"
indicator 27 will light.
Turn the DHW temperature control knob clockwise 24. The
DHW indicator will light 32.
2) Turn on a hot water tap, the orange "burner on" indicator
will light 28 and the water will become hot.
Heating
1) Turn main switch 23 to on position I . The green "power
on" indicator will light 27.
Turn the CH temperature control knob clockwise 25. The
CH indicator will light 33.
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 30 and the boiler will light.
To Turn Boiler Off Completely
1) Turn the main switch 23 to the off position O.
2) Turn the gas tap 36 OFF.
Control panel (fig 17)
23. Two position Selector switch
O= Switched OFF
I= Switched ON
24. = Domestic hot water temperature control knob
25. = Heating flow temperature control knob
26. Heating temperature indicator lights
27. Green indicator - Power ON
28. Orange indicator - Burner ON
29. Red indicator - Lock out / flame failure
30 “RESET” Reset button
31. Pressure gauge
32. =- DHW mode indicator
33. =- Heating mode indicator
Isolating Taps (fig 16)
taps shown in Open position
34. CH Flow isolating valve
35. Domestic hot water outlet
36. Gas service tap
37. Water service tap
38. CH Return isolating valve
I
reset
Fig.17
32
31
30
23
25
33
26
24
27
28
29

14
Fig. 18
12 Instruction for setting the built in clock (if fittied)
1. General layout
The mechanical clock covers a 24 hour period. Each tappet
represents 15 minutes A(fig. 19). An override switch is
located on the clock B(fig 19).
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. 19).
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. 19
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
9
9
6
6
12
12
I
A
C
B

15
Incorrects functions is signalled by leds (rep 26) display flashing correspond with chart below.
Notes
13 Incorrect function
CODE FAULT INFORMATION
30 40 50 60 70 80
 Overheating safety feature
 Overheating defect without locking
 Misfiring safety feature
 Fire detection without burner working
 Besides freezing pump
 Besides freezing burnerr
 Lack of water circulation.
 Primary water circulation defect
 Thermistor sanitary open
 Thermistor sanitary bypassed.
 Thermistor inlet heating open
 Thermistor inlet heating bypassed
 Extractor on and pressure regulator at rest
 Extractor off and pressure regulator at rest
 Thermistor cylinder open
 Thermistor cylinder bypassed
 Distribution valve stuck on heating
 = LED off
 = LED blinking

1309145 - 02/2002
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.
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: [phone]