Minimum DHW working pressure
Maximum DHW working pressure
Gas category :
BRITONY Combi 80
Maximum
2.74 m3/h 1.22 m3/h
2.04 kg/h 0.91 kg/h
2.00 kg/h
Minimum
power 9.5 kW
0.89 kg/h
J Heating flow
K D.H.W. flow
L Gas supply
M Cold water inlet
N Heating return
Combi 100 :
Combi 100 :
: 0.1 bar
:
BRITONY Combi 100
Maximum
power 28.2 kW
3.34 m3/h
2.45 kg/h
2.42 kg/h
11.1 I/min
13.4 I/min
9.54 I/min
11.5 I/min
2 I/min
10 bar
II 2E+ 3+
Minimum
power 12.5 kW
1.57 m3/h
1.17 kg/h
1.15 kg/h
Injectors and gas valves seat diameter
-Blue solenoid restrictor diameter
-Black solenoid restrictor diameter
-Manifold injectors (16)
BRITONY Combi 80
Natural qas
2.40 mm
4.25 mm 5.00 mm
1.23 mm
Butane or Propane
1.74 mm
0.72 mm
BRITONY Combi 100
Natural qas
2.80 mm
5.20 mm
1.26 mm
1 Butane or Propane
1.90 mm
3.80 mm
0.76 mm
Page 2
Pump and expanssion vessel characteristics
Hauteurmanomemque
m
5
1
3
2
1
0
100
200 300
1. CH Flow isolating valve
2. DHW outlet
3. Gas service tap
4. Water service tap
5. CH Return isolating valve
400 5OD 600
1 = by-pass closed
2 = by-pass open
Head available / flow
700 800 utl
Components location
DPbd
bar
13
I,7
13
I,3
1 ,I
03
0,7
20 50
Note : The system initial pressure should be over the following value :
System static height (in metre) + 0.7 = Initial pressure (in bar)
7. Pressure relief valve
8. Chassis
9. Connecting tails (x 5)
100 150 200 250 c (I)
10
10. Steel chassis complete with expansion
Jesse1
11. Sealed chamber
12. Expansion vessel (not visible)
13. Overheat thermostat
14. Electrical box
15.Three position selector switch
16. User’s guide
17. Heating flow temperature adjustment
18. CH pressure gauge
20. Green indicator - Power ON
21. Orange indicator - Burner ON
?2. Red indicator - Lock out/flame failure
?3. Reset button
3 4 95
24. Multigas burner comprising:
-25. 16 burner head
-26. Manifold
-27. 2 Ignition electrode
-28. lonization electrode
29. Gas section comprising:
-30. Security valve (grey)
-31. l/3 gas stage (blue)
-32. 2/3 gas stage (black)
33. Right hydraulic assy
34. Left hydraulic assy
35. Single speed pump
36. Air separator
37. Heating thermistor
38. DHW thermistor
8
7
39. Combustion chamber made of
aluminium coated steel with 4 ceramic fibre panels to insure heat insulation
40. Copper main exchanger
41. Stainless steel secondary plate
exchanger
42. Three way valve
43. connecting bracket
44. DHW flowstat
45. Heating flowstat
46. Flue hood
47. Adjustable by-pass
49. Air Pressure switch
50. 45” elbow comprising venturi
51. Fan
2
Page 3
WNCTIONING
gas service tap is opened at the gasmeter and
the
50
‘9 0 ‘3 0 x3
‘3 ‘3 0 ,3
‘3
pressure in central heating system is above 0.7
bar and below 2.5 bar with the pressure gauge0 (8).
3) Open the gas tap (3) by turning from right to left. 0
4) The boiler is now ready to use.
1) Turn selector switch (15) to position flf . The green “power
on” indicator 0 (20) will light.
2) Turn on a hot water tap, the orange “burner on” indicator @
(21) will light and the water will become hot.
Heating and Hot Water
1) Turn selector switch (15) to position 2 ‘1111. The green
“power on” indicator 0 will light (20).
3) If the room thermostat (if fitted), the boiler temperature control
‘1111 and the clock (if fitted) are all calling for heat, the orange
BRITONY COMBI FUNCTIONAL DIAGRAM
12
____A
35
Hot water mode
3
Page 4
“burner on” indicator 4 (21) will light and
the heating will be on.
When there is a need for hot water while heating control thermistor (37). This
the heating is on, it is only necessary to turn tern anticipates the changes of temperatu- controlled by the central heating contra
on a hot tap. The heating will be
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 @ (22) . If this happens
press the reset button (23) and the boiler subsequent hot water demand.
will light.
Domestic Hot Water Mode
To be able to supply hot water, the selector
switch 15 must be in either on ,:’ or
‘1111 2
the green indicator light 0 (20)
When a tap or shower is turned on, the flow
of mains water, above 2 litres per min., will tor light 0 (20).
activate the DHW flow switch (44) and
allow the 3 way valve (42) to move to the
DHW position. The pump can now circulate (either from the room thermostat or the
primary water heated by the main heat clock) the pump starts. If the boiler tempeexchanger through the secondary heat rature control is calling for heat and prima-
exchanger.
The first stage solenoid (31) (blue) and .
security solenoid (30) (grey) 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
h (21) will light and the second stage solenoid (32) (black) opens to allow the full gas the orange indicator bulb b (21) will light.
rate. If a flame is not detected, after 8 After 45 seconds the second stage soleseconds, the security solenoid closes and noid (32) (black) opens to allow the full
shuts
bulb @ (22) will light. The domestic hot
position. This will be confirmed by
Off
the gas. The red lockout indicator
interrupted
water temperature is controlled by the hot shuts off the gas. The red lockout indicate
water control thermistor 38 and the central bulb 0 22 will light.
SYS-
The central heating flow temperature i:
re in the secondary heat exchanger and thermistor (37). The boiler has been desi
ensures accurate temperature regulation. gned to minimise cycling and will not attemp
to relight for at least 3 minutes after the boi
When the tap is closed the burner is extin- ler thermostat has been satisfied. When the
guished and the pump stops. The boiler room thermostat is satisfied the burner wil
will now stay in the hot water mode for switch off and the pump will remain running
three minutes to maintain temperature to for a further 3 minutes before it too stops.
ensure a fast response in the event of a
NB
It is possible to override the 3 minute dela!
Priority will be given to a demand for hot by pressing the RESET button (23).
water. This will interrupt the central heating for the duration of hot water delivery. Lock out procedure
Flame disappearance :
Central Heating Mode
To be able to supply heating, the selector
switch (15) must be on
This will be confirmed by the green indica-
When there is a demand for heating
ry flow rate over 4 Itr/min, the central ton (23).
heating flow switch operates ailowing the
Ignition sequence to begin. The first stage Overheat detection :
solenoid (31) (blue) and security solenoid If an overheat is detected by the senso
(30) (grey) open together to allow gas to (13), the grey security solenoid (30) and the
the burner. The ignition sequence begins
and a continuous high speed spark ignites
the gas. As soon as a flame is detected
gas
rate, lf a flame is not detected, after 8
seconds, the security solenoid closes and
‘Ill1
c? position.
When the ionisation electrode (28) does no
detect flame presence. The orange indicate
lamp (21) extinguishes. A lighting cyck
starts. If a flame is not detected before f
seconds, the grey security solenoid (30) ark
the blue i/3 solenoid (31) will close. The
lock out red indicator (22) lights, the pump
(35) runs and the 3 way valve (42) stays ir
Its position.
After a few seconds, it will become possibk
to reset the boiler by pressing the reset but
blue i/3 (31) closes, the orange indicate
lamp (21) extinguishes. The ignitor is energi
sed for 8 seconds and the red lockout indi
cator (22) ligths. If the burner cannot religh
the boiler will go to lockout.
WIRING
rEiimiq
El
4
Plug for main power and Room
thermostat connection
1 2 3
1. Neutral
2. Phase
3. Room thermostat live
4. Accelerator resistor
5. Common for Accelerator and room
thermostat.
4
5
I
Page 5
ELECTRICAL WIRING continuation
I
U”
Designation
-Overheat sensor
13.
14.
-Electrical box
I4a.
-Regulation PCB
14b.
-Igniter Red, Black
I4c.
-Fuse 1.25 A
l4d.
-Fuse 2A
I4e.
-Power PCB
I4f.
-Room thermostat
149.
-Mains 230V 50 Hz
-Pressure switch
18.
27.
-Spark electrodes
28.
-Ionisation probe
-Security solenoid (grey) Grey
30.
-2/3 gas stage solenoid (black) Black
31.
-l/3 gas stage solenoid (blue) Blue
32.
-Pump
35.
-C/H thermistor Violet
37.
-DHW thermistor Green
38.
$2.
-3 way valve
-DHW flow switch Brown
$4.
-C/H flow switch Red
$5.
-Fan Brown. Blue
51.
Wiring colours
Brown
2: Black P: Orange
1: White
White
White
White, Yellow, Orange
REGULATION
Temperature regulation for both C/H and
DHW circuits are controlled by 2 thermistors. The C/H knob allows the adjustment
Df temperature between 35 and 85°C. The
DHW temperature is limited to 60°C. DHW
and C/H thermistors are identical and
interchangeable.
Resistance value are
-5000 Q at
-2631 Q at
-620 52 at
-255 Q at
25 “C
40°C
80°C
11o”c
FLOW SWITCHES
To ensure continued efficient operation of
the appliance, it is recommended that it is
checked and serviced as necessary at
regular intervals. The frequency of servicing will depend upon the particular installation condition and usage, but in
general, once a year should be adequate.
It is the law that any service work must be
carried out by a competent person such
as your local Chaffoteaux Service Centre,
British Gas or other CORGI registered
personnel in accordance with the current
Gas Safety (Installation and Use)
Regulations.
ADJUSTMENTS ON
The following adjustments are available on the regulation PCB. To
gain access to them, pivot down electrical box, remove the rear
cover and the rear panel of electrical box, unplug connectors from
regulation PCB and pull it toward you.
Heating output limitation :
- Functioning without limitation
- Functioning at l/3 gas rate only
Burner functioning:
- Regulation available 3/3, l/3, 0
- Functioning at full gas rate only
I
CONTROL
plug C on “P MAX”
plug C on “P l/3”
plug D on “NOR”
plug D on “TUR”
ROUTINE SERVICING
- Check that the fan blades are clean.
- Check, clean and replace components as
necessary.
- Carry out combustion test utilising the tes
points in the flue turret.
SUGGESTED SEQUENCE for SERVICING
Before disconnecting or removing any
parts, isolate the gas and electricity supplies. Ensure that the appliance is cool.
(for detail please see section on Parts
Removal and Replacement)
1
Flow in both D.H.W. and Heating circuits
are detected by 2 flow switches. A piston
with a magnet at the top operates a REED
switch. The piston is lifted by flow rates
listed below :
Flow rate threshold :
D.H.W.
C/H 250 I/h *20 I/h
120 I/h ?20 I/h
AIR PRESSURE SWITCH
The air flow rate is detected by a pressure
differential created by a venturi located in
the flue duct.
ON threshold
OFF threshold
AP > 130 Pa
AP < 100 Pa
The service schedule should include
the following operations:
- Check the pressure in the system.
- Check the correct operation of the
appliance.
- Check the correct operation of the gas
controls.
- Check the functions of the safety
controls.
- Check combustion chamber insulation
panels for damage.
- Clean the burner.
- Clean the heat exchanger.
- Check the burner manifold injectors.
- Clean gas and water filters.
- Check expansion vessel charge pressure.
- Clean and check operation of safety
valve.
Additional Procedures that may be
necessary:
- Check burner pressure and gas flow
rates.
Preliminary Checks
- Remove outer case
- Check the system pressure is at least
0.7 bar cold
- Check operation of l/3 and 2/3 solenoids
- Check that the burner is extinguished full:
when both solenoids are closed in both
DHW and C/H modes.
- Test ionisation functions and check that
lockout occurs by turning off gas tap.
-Whilst boiler is operating, check operatior
of primary flow switch by closing heating
flow valve and by pass screw (turn clockwi
se) noting the number of turns so that it
may be reset correctly.
e gas and electrical supplies. Isolate boi- Carry out steps 1 and 2 as above. Hinge
r from the system and drain before remo- down electrical box by pressing retaining
ng any component in the waterways. tabs P on either side.
nsure that the appliance is cool.
Outer Case
t free. When replacing, carefully locate on
gs (B) on top edge of chassis.
Remove wiring cover C. Disconnect leads
and
C
from spark generator. Loosen screws securing the closure plate and remove. Remove
grommet from base of sealed chamber.
Remove screw securing electrode bracket
and lift clear easing spade connectors
through the grommet. Reassemble in reverse order, twisted together electrodes cable
at least IO times to avoid electrical interference.
6. Burner Assembly
Carry out steps 1,2, disconnect electrodes
as mentionned in section 4 and 5. Remove
two screws securing burner assembly to the
back panel of the boiler. Lift right hand back
corner first. Reassemble in reverse order.
7. Gas Solenoids
Disconnect colour coded leads. Remove six
screws. The solenoids are attached to their
base plate. Lift clear taking care not to lose
the three plungers and springs.
Reassemble in reverse order replacing the
cork gasket.
1
front panel as in steps 1 and 2. Disconnec
three pressure switch cables noting the1
positions.
1 = white cable connected to NC
2 = black cable connected to NO
P = orange cable connected to C
Remove screw securing the switch bracks
to the chassis. Disconnect the samplin!
tubes again noting their positioning (+ an
-). Remove switch. Reassemble in revers
order.
11. Pressure Switch Venturi
Carry out steps 1, 2 and 8, as above
Disconnect the sampling tubes and rema
ve the screw securing the venturi to thl
flue outlet. Remove venturi by the botton
of the 45” elbow. Reassemble in revels
order.
12. Drain down
5 drain points are located on the boiler
Combustion Chamber
iscrew four self tapping screws securing
s sealed chamber front panel and lift
er top corner locating lugs. Unscrew four
If tapping screws to release combustion
iamber front plate and lift clear.
?assemble in reverse order.
Burner Manifold
lrry out steps 1 and 2 as above. Remove
o screws securing the closure plate and
? remaining four screws to release the
mifold. Lift clear. Replace the manifold
sket. Reassemble in reverse order.
Ionisation Electrodes
trry out steps 1 and 2 as above. Loosen
rews securing the closure plate and
nove. Disconnect the lead from the main
ring loom. Remove screw securing elecIde to burner. Thread wire through grom9 and lift clear. Reassemble in reverse
der.
8. Fan Assembly
Remove outer case and sealed chamber
front panel (See Steps 1 and 2). Disconnect
spade connectors noting positions. Remove
two screws securing the front of the fan
assembly and loosen screw on flue outlet.
Twist fan assembly anticlockwise to disengage from flue outlet and lift clear.
Re-assemble in the reverse order ensuring
that the wiring is re-connected correctly and
the screw on the flue outlet tightened.
9. Flue Hood
Carry out steps 1 and 2 as above. Remove
fan assembly as in step 8. Remove the
three screws securing the angled top of the
hood to the chassis. Lift and remove taking
care not to snag the pressure switch cables.
Re-assemble in the reverse order ensuring
that the hood is located behind the combustion chamber rear panel.
10. Pressure Switch
Remove outer case and sealed chamber
(air sebarator)
1 = DHW circuit drain point
2 = Heating circuit drain point
13. Water filters ( DHW and Heating)
The DHW filter ensures a seal between the
connecting bracket and the pipe to the
DHW flow switch. Drain the boiler as ir
step 12. Unscrew the pipe nut and remove
the clip on the hydraulic assy. Pull the pipe
toward you and remove the water filter
from its location.
The C/H filter is located in the right hydrau
lit assembly. Remove the return pipe a:
described previously and withdraw the fit
ter. Reassemble in reverse order.
Page 7
14. Flow switches
Drain boiler as in step 12. Disconnect the
electrical plug, turn the top cover anticlockwise, remove the O-ring and the
brass piston. Reassemble in reverse order.
15.3-Way valve
Drain boiler as in step 12. Remove the 3
clips on the 3 way valve. Remove the clip
on the exchanger flow pipe. Pull the pipe
down then pull it out of the 3 way valve.
Disconnect the plug from the motor.
Unscrew the nut on the pipe between the
connecting bracket and the 3 way valve
and pull it toward you. Rotate the 3 way
valve body anti-clockwise to unclip it from
the left hydraulic assembly.
16. Secondary heat exchanger
Drain both circuits of the boiler as in step
12. Unscrew the 2 fixing screws (D) and
remove the DHW exchanger from the front.
toward you to remove. Reassemble in rever-
se order.
18. Pump
Drain boiler as in step 12. Pivot the electical
box downwards. Open the electrical box
cover removing the 2 screws. Remove the
pump plug from the power board and earth
plug from earth socket. Unscrew the nut (F)
of the return pipe from the volute. Remove
the clip (G) on the pump volute and pull
pump toward you. Reassemble in reverse
order.
19. Pressure relief valve
The pressure relief valve can be serviced
from the front of the appliance. Drain the boiler first, undo the retaining screw and pull
out the valve.Reassemble in reverse order.
H
22. Spark generator
Carry out steps 1,2, and open the electrical
box cover as mentionned in step 5. Undo
the 4 screws of the electrical rear panel and
remove it. Unplug electrodes wires, remove
the ignitor connector from the PCB, remove
earth plug from earth socket. Hang out the
ignitor. Reassemble in reverse order.
23. Power board
Carry out steps 1, 2, and open the electrical
box cover as mentionned in step 5. Undo
the 4 screws of the electrical rear panel and
remove it. Unplug all cables from the PCB,
remove earth plug from earth socket. Hang
out the power board. Reassemble in reverse order.
24. Control board
Pull out plastic knob from the front panel
and proceed as step 23. Reassemble in
reverse order.
Prior to reassembly, check that the 4 gas-
kets are correctly positioned. The heat
exchanger is so designed that it cannot be
remounted incorrectly.
17. Main heat exchanger
Carry out steps 1 and 2 as above. Drain
boiler as in step 12. Remove the 2 clips (E)
located on return and flow pipes and pull
them downwards. Pull the main exchanger
20. Thermistors
Drain the boiler as step 12. Disconnect the
plug, remove the retaining clip pull the thermistor out. Reassemble in reverse order.
38 = DHW thermistor
37 = Heating thermistor
38
37
21. Safety thermostat
Remove the casing as step 1 and hinge
down the electrical box as step 5.
Disconnect the 2 cables, pull out the sensor
with the clip (13). Reassemble in reverse
order.
25. Expansion vessel
Remove the casing as step 1 and drain the
boiler as step 12 above. Unscrew the
connecting tails nuts and lift out the boiler
from the wall. Place it on a side on the floor.
Remove the expansion vessel bracket
retaining screws, disconnect the pipe from
the vessel
Reassemble in reverse order.
and pull ti toward you.
7
Page 8
-Check mains electrical connection
.
-Check internal fuses
-Check connection between the 2
PCBS
No
Ok
Press the reset button
Yes
Does the red LED
- Ok
FAULT FINDING CHART Part 1
1 No
Ihght ?
I
1 PLEASE CHECK THE FOLLOWING POINTS CAREFULLY BEFORE GOING
THROUGH THE FAULT FINDING CHART
-Gas
pressure
-Electric mains
-Minimum water pressure in the heating circuit (over 0.8 bar)
-All isolating valves have been opened
-Boiler air vented
-Minimum domestic hot water flow of 2 I/min
-Check that the heating filter is clear.
Check or replace the DWH flow
Replace DHW flow
1
switch
switch
Check DHW flow switch
operation
I
.I , ,
Does the pump run 1
Draw off Domestic Hot water
Does the pump run ?
Does the fan run ?
y&3& “--
switch continuity
between P and 2
& No
Replace Driver or control PCB I
I
I
Release pump rotor
Replace driver or control PCB
Check or replace main or secondary
heat exchangers They could be
11
-Id 1
fully scaled.
Replace heating thermistor
Lot
_..“-. ~ ..“.. ,,. .,,- -.iler
Check heating
thermistor
Ok
Replace pressure switch
Check air pressure
switch continuity
between P and 1
No
-Replace pressure swtch
\
Replace spark generator or ignition
electrods assembly a go~~~o~~~~o 1 1
Replace fan assembly
J
I
Page 9
FAULT FINDING CHART Part 2
Replace control PCB because orange
LED is deffective
Replace control or driver PCB
Check if an overheat occur or replace
overheat sensor
Replace driver PCB
Replace gas solenoids
Replace electrode
assembly
Does the orange LED
Does the red LED
Does overheat contact
Press the reset button
Do the gas solendids
Is there a gas pressure
Check the ionization
Replace driver PC6
I
light ?
light 1
close ?
energise 1
at manifold ?
electrode
No
Yes
Yes
Yes
Ok
temperature rise ?
Does the heating outlet
pipe temperature we ?
Replace the DHW heat exchanger
+Y
I
Does the DHW
No
F
Wait until the temperature
becomes stable.
I
Replace DHW thermistor
J
Does DHW temperature
rise over 7o”C?
Replace control PCB
Replace the 3 way valve
Replace control PCB
No
cvi
Stop water draw off
Does the orange LED
hot then rotate the heating control
knob anticlockwise to minimum
Does the orange LED
light ?
+
light ?
I
Yes
No
co
1
The boiler is OK
Page 10
SHORT LIST
104---B
411
572
505 811 39
805
607
938
532
615
560
627d
6294
(ey no Description
104 OVERHEAT THERMOSTAT 100°C
BRITONY COMBI 80
GC N”
2;7$83
Manf. Pt. N”
1010572
BRITONY COMBI 100
G.C. N” Manf. Pt. N”
277783 1010572
Chaffoteaux et 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.
0 Chaffoteaux et Maury 1996 a:
Chaffoteaux et Maury Ltd
Trench Lock
Trench
Telford -7
Shropshire
TFI 4SZ :
Tel: 01952 222727
Fax: 01952 243493
8
6
W
iz
2
Q
a
Ei
r:
Page 11
Page 12
ESP035
ESP035
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