CITY 1.24 and 2.24 GN CITY 1.24 and 2.24 B/P

ENGLISH
Wall-hung gas boilers
CITY 1.24 and 2.24 GN
CITY 1.24 and 2.24 B/P
Installation and
commissioning manual
11/00 - 94858165 - 8666-4118A

CONTENTS
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. MAIN DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Mounting backplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Installed boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. CONTROL PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5. HYDRAULIC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.1 Circulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.2 8 litre expansion tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.3 12 litre expansion tank (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.1 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6.2 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2.1 Installing the backplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2.2 Water and gas connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2.3 Water drainage connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.2.4 Installing the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.2.5 230 V electrical power supply connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.2.6 Connection of the Easymatic control or a room thermostat (option) . . . . . . . . . . . . . . . . . . .13
6.3 Pump logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6.4 Fitting the boiler casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
7. PRESSURE SETTING AND CALIBRATED INJECTOR AND DIAPHRAGM MARKINGS . . . . . . . . . . .15
8. COMMISSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8.1 Pre-commissioning checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8.2 Switching on the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8.3 Filling the installation with water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8.4 Igniting the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8.5 Air bleed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
8.6 Adjusting the domestic hot water flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
8.7 Adjustment of the maximum holding temperature of the DHW exchanger . . . . . . . . . . . . . . . . . . .17
8.8 Checks and adjustments in service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
8.8.1 Burner pressure check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
8.8.2 Burner safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
8.8.3 Safety thermostat check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
8.8.4 Switching off the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
8.8.5 Anti-overflow safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
9. MODIFICATION TO USE DIFFERENT GAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
9.1 Removing the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
9.2 Replacing the injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.3 Replacing the diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.4 Replacing the gas assembly modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.5 Reassembling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.6 Adjusting the minimum pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
9.7 “Gas type” label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
10. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10.1 Main heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10.2 Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10.3 Domestic hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
10.4 Cleaning the ”cold water” filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
11. DRAINING DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
12. ELECTRICAL CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
13. FAULT CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
14. LIST OF SPARES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
15 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
2

1. GENERAL
1.1 Description
CITY 1.24 wall hung gas boilers are for central heating
only. They can be associated with 50, 80 or 150
litre storage tanks to produce domestic hot water.
CITY 2.24 boilers provide central heating and instantaneous
domestic hot water.
They use natural gas or butane/propane.
CITY 1.24 GN and CITY 2.24 GN boilers are factory
set for use with natural gas.
CITY 1.24 B/P and CITY 2.24 B/P boilers are factory
set for use with butane/propane.
The boiler output can be varied between 10 and 24
kW for central heating and 8 and 24 kW for domestic
hot water.
1.2 Approvals
3
These boilers are supplied in 2 packs:
- backplate pack: water, gas and drain connections
(safety valve, disconnector and domestic hot water
pot bleeder on the 2.24 model).
- boiler pack.
Note:
An extended height backplate must be used for boilers
associated with an 80 litre tank.
Boiler 2.24 GN 2.24 B/P 1.24 GN 1.24 B/P
CE No. CE-0085 AT 0282
Category II 2E+ 3+
Type B11 BS
Combustion product removal Flue liner
Ignition Automatic
Gas Natural gas Butane/Propane Natural gas Butane/Propane
CITY boilers conform to the following European directives
and standards:
90/396 EEC Gas appliance directives
Applicable standards: EN 297 and EN 625.
73/23 EEC Low voltage directives
Applicable standards: EN 60.335.1
89/336 EEC EMC directives
Applicable standards: EN 50.081.1/
EN 50.082.1./EN 55.014
92/42 EEC Efficiency directives
★★ CE

1.3 Technical specifications
BOILER 1.24 2.24
Nominal usable output (central heating and hot water modes) kW 24 24
Nominal rated output (central heating and hot water modes) kW 26.4 26.4
Combustion efficiency % > 92 > 92
Minimum usable output (central heating mode) kW 10 10
Minimum rated output (central heating mode) kW 11.5 11.5
Minimum usable output (domestic hot water mode) kW - 8
Minimum rated output (domestic hot water mode) kW - 9.5
Maximum temperature (safety thermostat trips out) °C 105 105
Weight of boiler without water, backplate, casing kg 30 35
Weight of boiler without water, with backplate and casing kg 42 47
Shipping weight
Central heating circuit
kg 47 52
Nominal water flowrate (∆T = 20 K) l/h 1034 1034
Available head bar 0.1 0.1
Outlet temperature °C 40 - 90 40 - 90
Maximum pressure bar 3 3
Expansion tank l 8 8
Initial tank pressure bar 0.75 0.75
Minimum working pressure
Gas flowrate at nominal output
bar 0.3 0.3
Natural gas H (G20) m3 /h 2.79 2.79
Natural gas L (G25) m3 /h 2.97 2.97
Butane (G30) kg/h 2.08 2.08
Propane (G31) kg/h 2.05 2.05
Domestic hot water
Specific hot water flow rate (∆T = 30 K) l/mn - 11.2
Setpoint temperature °C - 40 - 60
Maximum cold water pressure bar - 10
Minimum operating pressure bar - 0.1
Minimum pressure for 11 l/min
Combustion product circuit
bar - 1.3
Connection ø mm 125 125
Minimum draw mbar 0.035 0,035
Combustion product flowrate (nominal output) kg/h 69.5 69.5
Combustion product temperature (nominal output)
Electrical circuit
°C 114 114
Supply voltage (50 Hz) V 230 230
Output consumption W ≅ 80 ≅ 80
1 mbar = 100 Pa
1 daPa ~ 1mm H 2 O
Serial No.
The serial number is on the information plates on the
boiler.
mini
information
plate
information
plate
8666N175
4

2. MAIN DIMENSIONS
2.1 Packages
Pack Number
Boiler Backplate pack Boiler pack
CITY 2.24 GN HA 10 HA 3
CITY 2.24 B/P HA 10 HA 4
CITY 1.24 GN (50)* HA 9 HA 1
CITY 1.24 B/P (50)* HA 9 HA 2
CITY 1.24 GN (80)* HA 11 HA 1
CITY 1.24 B/P (80)* HA 11 HA 2
Pack dimensions
Backplate pack Boiler pack
A
Pack A B C
HA 9
HA 10
860 375 95
HA 11 890 389 139
2.2 Mounting backplate
B
C
Standard backplate for 1.24 and 2.24 Increased height backplate for 1.24 / 80L
332
332
27,5
55 55 55 55
153
630
173
20
8666N073
5
* CITY 1.24 GN and CITY 1.24 B/P central heating
boilers can be used in conjunction with a 50 or 80
litre storage tank.
If they are associated with an 80 litre storage tank
they can be mounted on an HA 11 increased
height backplate so that the front panel of the
boiler can be lined up with that of the storage tank.
97,5
55 55 55 55
153
630
173
20
1000
570
540
8666N074
8666N075 8666N076

2.3 Installed boiler
CITY 1.24 and 2.24
450 380
= = Coupling
ring
internal
diameter
125 mm
230
880
8666N077
6
CITY 1.24 with increased height backplate
(for lining up with 80 litre domestic hot water storage
tank)
450 450
= = Coupling
ring
internal
diameter
125 mm
300
880
8666N078

3. SCHEMATICS
2.24 and 1.24 boilers
1. Central heating outlet valve
2. Domestic hot water outlet valve
3. Gas inlet valve
4. Cold water inlet valve:
- water flow open / close
- flowrate adjustment
- filter (removable from below)
5. Central heating return valve
6. Drain screw
7. Water flowrate sensor
8. Domestic hot water outlet sensor
9. Domestic hot water heat
exchanger drain screw
10. Domestic hot water heat exchanger
maintain temperature sensor
11. Domestic hot water heat
exchanger air bleed screw
12. Central heating / domestic hot
water changeover valve drive motor
13. Central heating / domestic hot
water changeover valve
14. Electronic pressure gauge
15. Degassing chamber
16. Circulator motor
17. Burner pressure offtake
18. Ionisation sensor
19. Expansion tank
20. Expansion tank inflation valve
21. Automatic bleeder
22. Anti-backflow draw cup-out
23. Combustion product connector
24. Combustion product anti-overflow
sensor
25. Main heat exchanger
26. Central heating outlet temperature
sensor
27. Safety thermostat
28. Combustion chamber
29. Burner
30. Igniter electrodes
31. Gas valve modulator
32. Gas valve safety valves
33. Gas supply pressure offtake
34. Modulator gas valve
35. Domestic hot water heat
exchanger (2.24 only)
36. Central heating circuit safety valve
37. Central heating circuit by-pass pipe
38. Disconnector
42. Igniter
43. Domestic hot water flow rate
controller (10 l/min)
44. Non return valve
* If boiler is connected to domestic hot
water storage tank
24
25
26
27
28
29
30
31
32
42
33
34
35
44
36
37
38
7
TS
TAF
S1
Central
heating
6
M
2
1
M
2
1
S2
S3
6 6 6
outlet
1 2 3 4 5
Central
heating
outlet
D.H.W.
Domestic*
hot water
storage tank
primary outlet
Gas
inlet
D.C.W. Central
heating
return
gas Domestic*
inlet hot water
storage tank
primary return
Central
heating
return
CITY 2.24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
43 9
8
7
CITY 1.24
8666N016F

4. CONTROL PANEL
A B B1 B2 C D E F
G H I J K L
M
A. Temperature display
- displays the temperature at the central heating
outlet or the domestic hot water outlet when water
is drawn off.
B. Domestic hot water heat exchanger temperature
button (CITY 2.24 only).
This function is factory set to the activated
position.
This provides maximum user comfort.
When the boiler is switched on, indicator B2 is on
to show that this function is activated.
The function can be deactivated, for example in
the event of prolonged absence, by pressing button
B (indicator B2 turns off).
Disconnection of the output supply does not modify
the selected operating mode.
Note:
- if indicators B1 and B2 are both turned on, the
burner has been ignited to heat the domestic hot
water supply.
- B2 flashes when the holding position is activated
by bypassing the Easymatic control.
C. Safety indicator
D. Unlocking button
- used to reset the boiler from failsafe mode
E. “clean” button
- forces operation of the boiler
• press and hold for 5 seconds (display shows )
to force the burner to the P min position
• press again (display shows ) to force
the burner to the P max (24 kW) position
8
F. “Installer” button
8666N020
G. 3-position switch
- off/anti-freeze
- central heating and domestic hot water (winter)
- domestic hot water (summer)
H. “Central heating” on indicator
- on when the boiler is ignited to heat the water in
the central heating circuit
I. Central heating temperature control
- range from 40 to 90°C (click stop at 75°C)
J. Flame present indicator
- on when the burner is ignited
K. Domestic hot water temperature control
- range from 40 to 60°C (click stop at 55°C)
L. “Domestic hot water” on indicator
- on when the burner is ignited to heat the domestic
hot water supply
M. Pressure indicator
- indicates the pressure in the central heating
circuit (0.5 to 2.5 bars)

5. HYDRAULIC SPECIFICATIONS
5.1 Circulator
The circulator incorporated in the boiler is equipped
with a 3-speed motor with a output consumption of
80 W supply. It is factory-set on high.
Remark
For boilers also producing domestic hot water (City
2.24 or 1.24 plus storage cylinder), the circulator can
if required be set on intermediate. It is nevertheless
recommended, for reasons of comfort, to leave it on
high.
For installations requiring greater hydraulic performance
it is possible to replace the motor with a more
outputful one (pack HA 209) with a output consumption
of 93 W.
5.2 8 litre expansion tank
CITY boilers are equipped as standard with an 8 litre
tank (initial pressure 0.75 bar). The total water volume
is determined in accordance with the static head
of the installation and for an average water temperature
of 80°C (flow: 90/return:70).
5.3 12 litre expansion tank
CITY boilers can optionally be fitted with a 12 litre
expansion tank (initial pressure 0.75 bar) (pack HA
208).
6. INSTALLATION
6.1 Regulations
Installation and maintenance regulations
The appliance must be installed and maintained by a
qualified professional in accordance with statutory
requirements.
9
Head (mcE)
6
5
4
3
2
1
GV
MV
PV
GV
MV
PV
0
0 200 400 600 800 1000 1200
Flowrate (l/h)
8666N079
1. PV : low speed
2. MV : medium speed
3. GV : high speed
Static head 5 6 7 8 9 10
in metres up to
Total water
volume
Establishments receiving the public
Installation regulations:
80 W motor
93 W motor (option)
138 129 120 111 102 92
Static head 5 6 7 8 9 10
in metres up to
Total water
volume
213 204 195 186 177 167
The appliance must be installed and maintained in
accordance with statutory requirements.

15 mm
mini
15 mm
mini
- The connection to the flue must be as short and
direct as possible.
- Do not install the boiler over a cooker.
8666N089
- The boiler must be fixed to a solid wall capable of
supporting the weight of the appliance when filled
with water and associated equipments.
- A 15 mm gap on either side of the boiler is sufficient
for removing and replacing the casing. However, a
50 mm gap is recommended to facilitate maintenance.
- The boiler must not be installed above a heat source
or a cooker.
- The IPX4D protection index authorises installation
in bathrooms, but outside protection level 1 and 2
volumes.
Ventilation of the room in which the boiler is installed
Fresh air supply
In the case of direct fresh air entry, the minimum area
required is 50 cm 2.
Vitiated air extraction
If the boiler is installed in a kitchen, for example, vitiated
air from appliances not connected to an extractor
pipe (gas cooker, etc.) can be extracted via the draw
cup of the boiler. For this it is sufficient for the top of
the boiler casing to be at least 1.8 m above the floor.
10
10 cm
mini *
48 cm
mini
S2
S1
55 cm
mini
30 cm
mini
5 cm
either side of
the boiler
S1 and S2 : Minimum 600 cm 2 unimpeded area
10 cm min * : Distance between front of boiler
and inside of closure panel
8666N090
The installation must comply with applicable regulations.
Thermostatic radiator valves must not be used on all
radiators.
The CITY boiler incorporates a by-pass assuring a
minimum flow of 200 l/h.
Radiators in rooms containing a room thermostat
must not be fitted with thermostatic valves.
Note:
We would draw your attention to the risk of corrosion
of boilers installed or near rooms in which the atmosphere
may be polluted by substances containing chlorine
or fluorine. Examples are: hairdressing salons,
industrial premises (solvents), refrigeration plants, etc.
The warranty does not cover such installations.

6.2 Connections
Important notes:
• Before connecting the boiler to an existing installation,
the installation must be thoroughly rinsed out
using an appropriate product to prevent sludge reaching
the heater body of the new boiler.
6.2.1 Installing the backplate
See the installation instruction sheet supplied in the
backplate pack.
6.2.2 Water and gas connections
With 8 or 12 litre expansion tanks, the connections
can be made from below, from above or from the rear.
• Central heating connection
Copper bush for connection to 16/18 mm dia. indoor
tube or 20/22 mm dia. outdoor tube.
• Domestic hot water connection
Copper bush for connection to 14/16 mm dia. indoor
tube or 18/20 mm dia. outdoor tube.
In hard water areas (hardness >25) we recommend a
water softener upstream of the boiler.
• Gas connection
Conform to the applicable provisions and in particular
gas installation specification. A shut-off valve must
always be installed as close as possible to the boiler.
The copper bush is for 16/18 mm dia. indoor copper
tube.
Operating pressure
20 mbar for H natural gas H (G20)
25 mbar for H natural gas L (G25)
29 mbar for butane (G30)
37 mbar for propane (G31)
11
• If different metals are used, such as copper and aluminium,
a corrosion inhibitor must be used.
Central
heating outlet
ø18
Tube-cutter
D.H.W
ø16
Gas
inlet
ø18
Connections
D.C.W
ø16
From the rear
From above
From below
Central
heating return
ø18
ø18 od ø16 od ø18 od ø16 od ø18 od
ø20 id ø18 id ø18 id ø20 id
8666N130
All nested connections to the gas tube must be
made using sleeves purchased off the shelf.
8666N081

6.2.3 Water drain connection
6.2.4 Installing the boiler
1
The 32 mm diameter “waste water” drainage
connection supplied with the backplate
must be fitted only after brazing the copper
tubes.
It is P19 fixed to the left-hand upright of the
backplate using a 12 mm long 4 mm diameter
screw.
Evacuation to a drain is by means of a
syphon.
Remove the plastic plugs from the boiler
pipes.
2 Offer up the boiler above the valve bracket so that
it backs onto the backplate.
3 Lower the boiler gently. Fit the 5 seals supplied in
the sachet with the manual.
4 Remove the retaining pins and tighten the nuts.
6.2.5 230 V electrical main supply connection
CITY boilers are fitted with a 3-core main supply
cable approximately 1.5 m long.
For correct electrical installation, the appliance must
be connected to a socket outlet or a circuit including
a 2-pole switch with an open contact spacing greater
than 3 mm.
Electrical connections must be made by a
qualified professional.
Note:
When connecting to the mains electrical main
supply, connect the brown wire to live and the
blue wire to neutral.
If these connections are reversed the ionisation
type flame detector will not operate. The
boiler will then go to the fail-safe mode.
12
8666N088 B
1
4
brown to live
blue to neutral
grenn/yellow to earth
3
2
marron sur phase
8666N087
8666N091 A

6.2.6 Connection of the Easymatic control or a
room thermostat (option)
The options are to be connected at the back of the
control panel under the small flap.
- Pivot the panel forwards after unscrewing the 2 fastening
side screws.
- Pull the small flap towards you and ensure that the
connections are in accordance with the selected
options.
• Easymatic communicative remote control
(box AD 136)
- see the instructions delivered with the Easymatic
remote control.
• Programmable room thermostat
(box AD 137)
- remove the resistance from the Room Thermostat
connector
- connect, in any order, terminals 1 and 3 of the
thermostat to the terminals of the Room Thermostat
connector.
- see also the instructions delivered with the thermostat.
• Non-programmable room thermostat
(box AD 140)
- remove the resistance from the Room Thermostat
connector
- connect, in any order, terminals 1 and 4 of the
thermostat to the terminals of the Room Thermostat
connector.
- see also the instructions delivered with the thermostat.
Note : If a room thermostat with 2 dry-contact wires
has been installed, it may be used.
For this:
- remove the resistance from the Room Thermostat
connector
- connect, in any order, the 2 thermostat wires to the
terminals of the Room Thermostat connector.
Remark:
Connections can be with either a 2 wire telephone cable
or an electrical section cable of up to 2 x 1,5 mm 2 .
13
BUS TAM
SB
BUS TAM SB
1 2 3
8666N094

6.3 Pump Logic
1. In mode (domestic hot water) or in Easymatic
mode (summer), the pump works when
domestic hot water is produced (d.h.w), and cuts
off 30 seconds after the d.h.w has been produced;
the inversion valve will remain in the d.h.w. position.
2. In mode (heating + d.h.w.)
A. Without a Room Thermostat or Easymatic
The pump will work continuously.
B. With a Room Thermostat
• Switch in position 1:
Continuous operation of the pump.
• Switch in position 2:
- The pump cuts off 15 minutes after starting
the Room Thermostat.
- After production of d.h.w., if the Room Thermostat
is started up, the pump cuts off after
30 seconds and the inversion valve remains in
the d.h.w. position.
• Switch in position 3:
- The pump cuts off 30 seconds after starting
the Room Thermostat
- After production of d.h.w., if the room thermostat
is started up, the pump cuts off after
30 seconds and the inversion valve remains in
the d.h.w. position.
C. With an Easymatic:
• Switch in position 1 or 2:
Continuous operation of the pump.
• Switch in position 3:
- When the room temperature is correct, the
pump remains in continuous operation.
- When the room temperature is too high, the
pump cuts off after 15 minutes.
- After the production of d.h.w., if the room
temperature is too high the pump cuts off
after 30 seconds and the inversion valve
remains in the d.h.w. position
3. In mode
The pump is stopped.
If need be, when the room temperature falls below
10° C, the pump will start up to prevent the boiler
from freezing.
14
1 2 3
BUS TAM SB
1 2 3
8666N124A

6.4 Fitting the boiler casing
8666N092
7. PRESSURE SETTING AND CALIBRATED INJECTOR AND DIAPHRAGM
MARKINGS
Equipment
CITY 1.24 and 2.24
Burner pressure and gas flow rate
CITY 1.24 and 2.24
ø
mm
Burner Natural gas H and L 1.35
injectors Butane / Propane 0.8
Diaphragm Natural gas H and L 5.2
Butane / Propane 4.2
Output nominal minimum
Burner Nat. gas H mbar 6.5 1.0
pressure Nat. gas L mbar 7.9 1.4
Butane mbar 19.1 2.5
Propane mbar 24.1 3.4
Flow Nat. gas H m 3 /h 2.79 1.01
rate * Nat. gas L m 3 /h 2.97 1.07
Butane kg/h 2.08 0.75
Propane kg/h 2.05 0.74
15
Note : fit the front panel after commissioning
the boiler.
* 1013 mbar at 15°C
8666N093

8. COMMISSIONING
Commissioning must be carried out by a qualified
professional
8.1 Pre-commissioning checks
- Check on the boiler label that it is set up for the gas
in use.
- If not, see chapter 9 “Modification to use a different
gas”.
- Open the gas valve 3.
- Take out the 2 fixing screws at the sides and swing
the control panel forward.
- Check the pressure of the gas supply to the boiler
at the pressure offtake on the gas valve (33) against
the information plate.
- Close the gas pressure offtake screw.
- Check for gas and water leaks.
Return the control panel to its original position and
replace the 2 fixing screws at the sides.
8.2 Switching on the boiler
Check the 3-position switch G is set to “off/anti-freeze”
and then switch on the boiler by plugging in the
plug or operating the isolating switch.
8.3 Filling the installation with water
- Open valves 1-2*-4* and 5.
- Check that the automatic bleeder 21 at the top of the
expansion tank is open.
- Fill the installation to a pressure of 1.5 to 2 bars via
valves 38.1 and 38.2.
- Close valves 38.1 and 38.2 when the installation
has been filled with water.
* CITY with domestic hot water production.
8.4 Igniting the boiler
- Set the switch to the position marked .
- If there is a room thermostat or a communicating
remote controller, set it to call for heat.
16
33
38.1
G
38.2 1
2*
4*
3
8666N180
8666N096
5 8666N098 B
8666N097

8.5 Air bleed
1
2
Open the stopper of the automatic bleeder in
the top rear corner of the boiler.
Domestic hot water heat exchanger
(CITY 2.24 only)
- Bleed the domestic hot water heat exchanger
by unscrewing the bleeder slightly.
- To accelerate bleeding, alternate between
calling for heat and hot water.
- Tighten the bleeder after bleeding the air.
Central heating installation
- Check that all of the installation has been bled
correctly.
8.6 Adjusting the domestic hot water flow rate
(CITY 2.24 only)
The maximum domestic hot water flow rate is limited
to 10 l/min by the flow rate controller which is mounted
on the flow rate detector (item 43 § 3).
This maximum flow rate can be reduced in 2 ways:
- 1. by adjusting the screw 4.1 (8 mm Allen key),
- 2. by replacing the 10 l/min controller with an
8 l/min controller.
The 8 l/min controller (package HA 218) is supplied
with fitting instructions.
17
8666N105 A
8.7 Adjustment of the maximum temperature position of the DHW exchanger : T MM
(CITY 2.24 only)
The DHW exchanger, when activated, is maintained
at the projected holding temperature DHW - 5° C or
at the maximum T MM.
Adjustment Display
- Press the button for 5 seconds (55°C)
- Press repeatedly to select the desired
maximum temperature position TMM
To exit the display, wait 5 minutes without
pressing anything
1
2
4.1
8666N106 B

8.8. Checks and adjustments in service
8.8.1 Burner pressure check
- Unscrew the screw inside the burner pressure offtake
17 a few turns.
- Connect a pressure gauge to the pressure offtake
and verify that the pressure corresponds to that indicated
in chapter 7.
Checking the burner pressure at nominal (max)
output:
Force the burner to operate at maximum output by
pressing the button marked E :
- Press and hold down the “clean” button E for
5 seconds. The display A indicates .
- Press button E briefly. The display A indicates .
Check that the measured pressure corresponds to
that indicated in chapter 7.
If there is any significant difference, check that the
boiler is equipped for the gas supplied as indicated in
the table in chapter 7.
To revert to normal operation press button E briefly.
- Remember to close the pressure offtake
screw 17 after measuring the pressure.
- Check the pressure offtake 17 for gas
leaks.
18
A
17
E
8666N104 A
8666N107A

8.8.2 Burner safety check
- With the burner lit, cut off the gas supply by closing
the shut-off valve.
- Check the reaction of the safety system:
the alarm indicator C should turn on and the display
A should alternately indicate and .
- Open the gas valve and press the reset button D.
8.8.3 Safety thermostat check
The safety thermostat should shut down the boiler if
the temperature at the central heating outlet exceeds
105°C.
- Press the “clean” button E for 5 seconds. The dis-
play A shows .
- Press button E briefly. The display A shows .
- Press button E a third time for 5 seconds. This
forces the burner to minimum output and the display
A indicates alternately and the original temperature.
- Close the central heating flow and return valves 1 and
5 using an 8 mm wrench.
The outlet temperature is no longer limited by the
control system and the safety thermostat should shut
down the burner.
When the temperature exceeds 100°C and the safety
thermostat has not yet tripped, the display indicates
alternately and .
If the burner is turned off, the boiler cools and shortly
afterwards the burner is ignited again and the rise
in temperature continues:
- when the burner is shut off by the safety thermostat:
• indicator C turns on
• the display alternately indicates and .
- To restart the burner:
• open central heating flow and return valves 1
and 5
• press button D.
19
8666N111 A
8666N218
8666N219
A C D
A
1 5
A
8666N108 B
If the boiler has not shut down 2 minutes
after shutting the valves, disconnect the boiler
from the mains electrical output supply.
E
C D

8.8.4 Switching off the boiler
Set switch G to “off/anti-freeze”:
The boiler goes to the standby mode and the display
indicates
Note: In this operating mode only the boiler is
protected against freezing.
8.8.5 Anti-overflow safety check
If fumes overflow through the anti-backflow device,
the anti-overflow safety device 24 disconnects the
electrical output supply to the valve and the boiler
goes to its fail-safe mode.
The anti-overflow device must be checked on commissioning
the boiler and during annual maintenance.
Check procedure:
- Turn off the boiler by setting the 3-position switch G
to “off/anti-freeze”.
- Remove the pipe connecting the boiler to the flue.
- Using a sheet of metal (or any other heat-resistant
material), block the combustion product outlet of the
boiler.
- Start the boiler; combustion products are evacuated
in the upper part of the boiler via the openings in the
anti-backflow device.
- The anti-overflow sensor disconnects the electrical
output supply from the gas valve within 2 minutes.
The burner is turned off.
- After completing the check, replace the pipe
connecting the boiler to the flue. The boiler restarts
automatically after about 10 minutes.
Note: To avoid this time delay it is sufficient to switch off
the mains electrical output supply and switch it on
again.
20
G
24
8666N096
8666N118

9. MODIFICATION TO USE DIFFERENT GAS
CITY 2.24 GN and 1.24 GN boilers are equipped to
use natural gas. CITY 2.24 B/P and 1.24 B/P boilers
are equipped to use butane/propane.
The procedure from changing from one gas to the
other is as follows:
9.1 Removing the burner
9.2 Replacing the injectors
9.3 Replacing the diaphragm
9.4 Replacing the gas assembly modulator
9.5 Reassembling
9.6 Adjusting the minimum pressure
9.7 “Gas type” label
9.1 Removing the burner
1
2
3
4
5
6
7
8
Disconnect the electrical output supply
and the gas supply from the boiler.
Remove the front panel from the boiler casing (2
screws at the top).
Remove the front plate from the combustion
chamber (2 screws at the top + 2 wing-nuts).
Disconnect the 2 igniter electrodes.
Disconnect the wire from the ionisation sensor.
Remove the anti-radiation plate by pulling it
forwards.
Unscrew the 3/4” nut at the top of the gas
valve.
Unscrew the 4 screws fixing the burner to the
manifold. Use a magnetic screwdriver if possible.
Remove the burner, the diaphragm and the 2
seals.
21
8
8666N178
3
5
The operations described below
must be carried out by a qualified
professional.
1
2
4
7
6
8666N177

9.2 Replacing the injectors
7
9.5 Reassembling
Reassembly is the reverse procedure to disassembly.
- Connect the igniter electrode.
- Connect the ionisation sensor.
- Replace the anti-radiation plate.
8666N201
Replace the injectors and the seals (see chapter 7).
9.4 Replacing the gas assembly modulator
1
2
3
Disconnect the two wires from the modulator.
Unscrew the 2 screws retaining the modulator
using a Torx No. 20 wrench.
Replace the modulator and the seal, checking
that the seal and the spacer seat correctly.
● Modulator with grey cap =
natural gas, modulator mark:
1.5 - 20 mbar.
● Modulator with yellow cap =
butane/propane, modulator mark:
3 - 37 mbar.
Reconnect the 2 wires to the modulator.
22
9.3 Replacing the diaphragm
3
2
1
- Replace the combustion chamber side and front
plates.
- Switch on and open the gas supply.
Check for gas leaks.
8666N179
When replacing the burner, fit the new diaphragm to the
gas assembly between 2 new seals. See chapter 7.
8666N184

9.6 Adjusting the minimum pressure
Natural gas H and L, butane and propane.
Adjust the pressure at the burner downstream of the
gas assembly. The values to set are indicated in
chapter 7.
Measure the pressure at the boiler by connecting a
pressure gauge to pressure offtake 17, as follows:
1
2
3
4
5
6
Remove the screw retaining the plastic cover.
Remove the cover.
Verify that the “maximum flowrate” plastic nut is
screwed fully home.
Force operation of the boiler at the minimum output
setting by pressing the “clean” button E and
holding it down for 5 seconds (see section 4).
Adjust the minimum pressure with the brass nut.
- Turning the nut clockwise increases the
pressure.
- Turning the nut anti-clockwise
reduces the pressure.
After completing the adjustment, replace the
cap.
To revert to normal operation, press button E briefly.
Disconnect the pressure gauge.
Screw in the screw of the pressure offtake.
Check for gas leaks.
9.7 “Gas type” label
Affix the label indicating the type of gas for which the
boiler is equipped and set up.
23
2
8666N183
1
3
5
17
8666N104 A
8666N122

10. MAINTENANCE
Maintenance operations must be carried out by a
qualified professional.
10.1 Main heat exchanger
Periodically check the main heat exchanger for soiling.
If necessary remove the heat exchanger and wash it
with very hot water containing a detergent.
1
2
3
4
5
6
10.2 Burner
Disconnect the electrical output supply
and the gas supply from the boiler. Close
the boiler isolating valves and open the
drain screws.
Remove the boiler casing front panel (2 screws
at the top).
Remove the front plate from the combustion
chamber (2 screws at the top + 2 wing nuts).
Remove the anti-radiation plate.
Remove the side plates of the combustion
chamber.
Unscrew the 3/4" nuts of the heat exchanger
(30 mm wrench).
Remove the main heat exchanger by pulling it
towards you.
Note:
When refitting the main exchanger:
- grease the threads of the connectors
- replace the seals
- tighten the nuts moderately
Check the condition of the burner annually.
Use a dry soft brush to clean the burner, or wash it
with hot water containing a detergent. Rinse thoroughly.
For instructions on removing the burner, see section
9.1.
24
6
30
1
2
3
4
5
4
8666N176
5
8666N119 A

10.3 Domestic hot water
If the domestic hot water heat exchanger is affected
by limescale, clean it by connecting a descaling
pump to the two domestic water connectors ➂.
Use only products suitable for this purpose.
To obtain access to the domestic water connectors:
1 Tilt the control panel forward after removing the
2 fixing screws at the sides.
2
3
4
5
6
7
8
Disconnect the electrical output supply
and the gas supply from the boiler.
Close the domestic water inlet and outlet
valves and open the drain screws.
Protect the control panel from being
splashed with descaling product.
Unscrew the two 1/2”nuts on the domestic water
heat exchanger (24 mm wrench).
Unscrew slightly the 3/4” nut on the domestic
hot water outlet (30 mm wrench).
Pivot the domestic hot water outlet tube towards
the front.
Unscrew the 3/4" nut on the domestic cold water
inlet pipe (30 mm wrench).
Remove the domestic cold water inlet pipe.
Connect the descaling device to the two 1/2"
exchanger connectors.
After descaling, reassembly is the reverse of the
above procedure.
Replace the seals with new seals.
10.4 Cleaning the ”cold water” filter
(CITY 2.24 only)
1
2
3
4
Turn the tap off (6mm spanner) to avoid any drawing
off from the domestic circuit (kitchen,
bathroom, etc.) and major discharge when the
filter is dismantled.
Unscrew the drain cock after connecting a hose
(dimension: 8 mm).
Unscrew the adjustment door-filter-tap with a
17mm spanner.
If required, remove the filter and clean it with a
soft brush
- replace the filter on the filter-door and screw it
into the tap (17mm spanner)
- turn off the drain cock
- turn on the tap (6mm spanner).
25
1
�
5
3
7
4 6
�
�
8666N182
�
8666N293

11. DRAINING DOWN
To drain down the boiler:
- Close gas valve 3, water valves 1, 2, 5
(8 mm wrench) and 4 (6 mm wrench).
- Connect an 8 mm internal diameter hose to drain
screw 6.
- Unscrew the drain screw.
26
6
6*
4*
6*
* Boiler prepared for domestic hot water supply.
1
6
2*
3
5
8666N117 B

12. ELECTRICAL CIRCUIT DIAGRAMS
CITY 2.24 with flue liner
8806-5112
10 14
J18 J1
1
2
3
1
2
3
J15 J13
J6
J8
8806-5111
J17
1
2
J12
J2
J10
1
2
3
4
5
6
J7
J8
J11 1 2 3 4 5 6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1 2
SCH θ °C
1 2
SECS θ °C
2
1
θ °C
SECSM
P
MNM
2
1
27
θ °C
TAF
J3 J4 J5
J1
J3 J2
J4
TEMPO
2 1
3
4
5
J5
6
DBM
1 3 2 1 2 1 2 1
LN
ALI.
230V / 50Hz
2
CDC TAM SB
2
1
3 4
1 2
θ
TS
SI
TA
VGM
5 6
M
VINV P
8666N110 E
based on
8666.4074 C
TAM Room thermostat
TEMPO Time-delay adjustment
TS Safety thermostat
VGM Modulating gas valve
VINV Inverter valve
SB Tank sensor
SCH Boiler sensor
SECS Domestic hot water sensor
SECSM Domestic hot water maintain temp. sensor
SI Ionisation sensor
TA Igniter transformer
TAF Anti-backflow thermostat
ALI Output supply
CDC Communicating remote controller
DBM Flowrate detector
EXT External
J.. Printed circuit connector
MNM Pressure gauge
P Pump

CITY 1.24 with flue liner
8806-5112
10 14
J18 J1
1
2
3
1
2
3
J15 J13
J6
J8
8806-5111
J17
1
2
J12
2
1
J10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SCH
J2
θ °C
1
2
3
4
5
6
J7
J8
J11
1 2 3 4 5 6
P
MNM
2
1
28
θ °C
TAF
J3 J4 J5
J1
J3 J2
J4
TEMPO
J5
2 1
3
4
5
6
2 1 3 2 1 2 1 2 1
LN
ALI.
230V / 50Hz
CDC SB
TAM
2
1
3 4
1 2
θ
TS
SI
TA
VGM
5 6
M
VINV P
8666N109 E
based on
8666.4078 C
TAM Room thermostat
TEMPO Time-delay adjustment
TS Safety thermostat
VGM Modulating gas valve
VINV Inverter valve
SB Tank sensor
SCH Boiler sensor
SECS Domestic hot water sensor
SECSM Domestic hot water maintain temp. sensor
SI Ionisation sensor
TA Igniter transformer
TAF Anti-backflow thermostat
ALI Output supply
CDC Communicating remote controller
DBM Flowrate detector
EXT External
J.. Printed circuit connector
MNM Pressure gauge
P Pump

13. FAULT CODES
In the event of a fault, the display indicates an alarm
message by alternately showing and a code
from which the type of fault can be determined.
There are two alarm categories:
1. Safety alarms
Alarm code Meaning
Igniter fault
Ionisation fault
Spurious flame
Overheating alarm
No water
à
Combustion product overflow. Display shows combustion product temperature at time of overflow
Card fault
Safety fault display interrupted
2. SENSOR alarms
Alarm code Meaning
ou
ou
ou
8666N121
8666N121
14. LIST OF SPARES
See following pages
Central heating outlet temperature sensor fault
Anti-overflow sensor fault
Domestic hot water outlet (CITY 2.24) storage tank (CITY 1.24) sensor fault
Domestic hot water maintain temperature function sensor fault
Storage tank sensor connection on CITY 2.24 (incoherent)
Electronic pressure gauge fault
29

8666-4140 A
Spares CITY 1.24 and 2.24
Note: to order a spare part it is essential to give the code number in the list opposite the item number of the part required.
FRAME
2
6
ANTI-BACKFLOW DEVICE + COMBUSTION CHAMBER
9
8
11
12
66
4
5
7
13
3
DE DIETRICH THERMIQUE • BP 30 • 57, rue de la Gare • F-67580 MERTZWILLER • Tél. : +33 3 88 80 27 00 • Fax : +33 3 88 80 27 99
N° IRC : 347 555 559 RCS STRASBOURG
Spare Part Centre • 4, rue d'Oberbronn • F-67110 REICHSHOFFEN • Tel. :+33 3 88 80 26 50 • Fax : +33 3 88 80 26 98
1
11
10
14
8666N133
8666N134

PIPES – 1 SERVICE
PIPES – 2 SERVICES
25
19
19
20
26
26
25
24
21
15
19A
2/7
18
25A
23
22
16
16
CITY 1.24 and 2.24
26
25A
17
26
19A
17
8666N135B
8666N136 B

BURNER
DOMESTIC HOT
WATER HEAT EXCHAN-
GER AND 3-WAY
VALVE ASSEMBLY
46
65
46
From
14/01/99
34 / 35
14x
47
Until
13/01/99
49
45
2x
41
64 65
30 / 31
54
42
32
51
52 63 68
67
3/7
33
93
62
48
91
57
56
92
50
59
CITY 1.24 and 2.24
38
39 / 40
36
37
4x
CITY 2.24 ET 2.24 FF
Kit régulateur de débit d'eau sanitaire
Colis HA 218 Montage
Assembly
Blanc : 8 l/mn Bleu : 10 l/mn
Pour monter un régulateur de débit 8 l/mn ou 10 l/mn sur
une chaudière CITY 2.24 ou 2.24 FF, procéder comme
suit :
Couper l'alimentation électrique et l'alimentation
en gaz de la chaudière 3 .
- Fermer les vannes départ 2 et entrée eau froide
sanitaire 4 .
- raccordé un tuyau flexible ø intérieur 8 mm sur les vis
de vidange 6 , puis les desserrer.
55 60
38a
8666N191
2
3
6
4
6
8666N192
03/99 - 948.58.118 - 8666-4106
69
61
8666N137A
8666N138 C

BOILER CASING
71
CONTROL PANEL
82
76
83
73
81
70
101
86
4/7
72
77
102
88
79 80
85
CITY 1.24 and 2.24
78
87
75
8666N140
8666N139

BRACKET - 1 SERVICE
BRACKET – 2 SERVICES
117
123
107
125
108
129
118
109
116
111
108
122
114
122
110
119 121 121a 120
5/7
124
126
124
126
105
115
CITY 1.24 and 2.24
128
127
106
128
112
113
8666N141C
8666N142 A

CITY 1.24 and 2.24
Ref. Code No. DESCRIPTION Ref. Code No. DESCRIPTION
FRAME
1 8666-8500 COMPLETE (CPL) FRAME
2 8666-5500 COMPLETE LEFT UPRIGHT
3 8666-5501 COMPLETE RIGHT UPRIGHT
4 8666-5502 COMPLETE CHASSIS SUPPORT
5 8666-5503 COMPLETE TANK SUPPORT
6 8666-5504 COMPLETE PIPE SUPPORT
7 8666-5505 COMPLETE CABLE-CLAMP
ANTI-BACKFLOW DEVICE
8 8666-5569 COMPLETE ANTI-BACKFLOW DEVICE
9 8666-5506 COMPLETE NOZZLE
COMBUSTION CHAMBER
10 8666-5507 COMPLETE COMBUSTION CHAMBER BACK
11 8666-8544 INSULATED COMBUSTION CHAMBER SIDE PLATE
12 8666-8545 INSULATED COMBUSTION CHAMBER FRONT PLATE
13 8666-5508 COMBUSTION CHAMBER INSULATION KIT
14 8666-5509 FRONT PLATE FIXING ROD KIT
PIPES
1 SERVICE
15 8666-5510 COMPLETE CENTRAL HEATING OUTLET PIPE
16 8666-5511 COMPLETE PRIMARY RETURN PIPE
17 8666-5512 CPL CENTRAL HEATING EXCHANGER RETURN PIPE
18 8666-5513 CPL DOMESTIC HOT WATER PRIMARY RETURN PIPE
19 8666-5514 COMPLETE EXPANSION TANK PIPE
19a 8666-5578 COMPLETE EXPANSION TANK PIPE
25 9758-1257 8 LITRE EXPANSION TANK
25a 8666-5579 COMPLETE EXPANSION TANK
2 SERVICES
16 8666-5511 COMPLETE PRIMARY RETURN PIPE
17 8666-5512 CPL CENTRAL HEATING EXCHANGER RETURN PIPE
19 8666-5514 COMPLETE EXPANSION TANK PIPE
19a 8666-5578 COMPLETE EXPANSION TANK PIPE
20 8666-5515 COMPLETE PRIMARY OUTLET PIPE
21 8666-5516 CPL CENTRAL HEATING EXCHANGER OUTLET PIPE
22 8666-5517 COMPLETE LOOP TUBE
23 8666-5518 COMPLETE DOMESTIC COLD WATER PIPE
24 8666-5519 COMPLETE DOMESTIC HOT WATER PIPE
25 9758-1257 8 LITRE EXPANSION TANK
25a 8666-5579 COMPLETE EXPANSION TANK
26 9491-8141 AUTOMATIC AIR BLEEDER + SEAL
6/7
BURNER
30 9758-0051 WORGAS NG BURNER
31 9758-0052 WORGAS BP BURNER
32 8666-5520 COMPLETE IGNITER SPARK PLUG SET
33 8666-5521 COMPLETE IONISATION SENSOR
CONVERSION KIT
34 8666-7212 NG CONVERSION KIT
35 8666-7213 BP CONVERSION KIT
GAS VALVE
36 8666-5522 COMPLETE NG VALVE
36 8666-5580 COMPLETE B/P VALVE
37 8666-5523 COMPLETE GAS PIPE
38 8666-5524 COMPLETE VALVE GAS/MANIFOLD PIPE
38a 8666-5581 COMPLETE FLANGE
39 8666-5525 COMPLETE NG DIAPHRAGM
40 8666-5526 COMPLETE BP DIAPHRAGM
41 8666-8019 ANTI-RADIATION PLATE
42 8666-5577 COMPLETE CENTRAL HEATING EXCHANGER
2 SERVICES ONLY
45 8666-5527 COMPLETE DOMESTIC HOT WATER EXCHANGER
46 9490-2000 DRAIN VALVE
47 9491-8134 BLEED SCREW
48 9491-4277 NON-RETURN VALVE
49 8666-5528 DOMESTIC HOT WATER EXCHANGER FIXING KIT
50 8666-5529 CPL DOMESTIC HOT WATER EXCHANGER BASE
51 8666-5530 DOMESTIC HOT WATER EXCHANGER INSULATING KIT
52 8666-5531 DRAIN PIPE
COMPLETE 3-WAY VALVE
54 9513-2296 COMPLETE CIRCULATOR
55 9510-0502 COMPLETE STEPPER MOTOR
56 8666-5541 COMPLETE CIRCULATOR BASE
57 8666-5576 CIRCULATOR SEAL SUB-ASSEMBLY
59 8666-5571 COMPLETE VALVE BODY
60 9750-9052 COMPLETE VALVE
61 8666-5532 COMPLETE 3-WAY VALVE FLANGE
CONTROL AND SAFETY SYSTEM
62 9536-5107 ELECTRONIC PRESSURE GAUGE
63 8666-5533 COMPLETE SAFETY VALVE
64 8666-5534 COMPLETE SAFETY THERMOSTAT
65 9536-2442 SCREW-IN TEMPERATURE SENSOR

CITY 1.24 and 2.24
Ref. Code No. DESCRIPTION Ref. Code No. DESCRIPTION
66 9536-2443 FUMES SENSOR
2 SERVICES ONLY
67 8666-5535 COMPLETE FLOWRATE DETECTOR
68 9536-2440 CLIP-ON DOMESTIC HOT WATER OUTLET SENSOR
69 8666-7218
KIT DOMESTIC HOT WATER FLOW RATE
CONTROLLER (10 L/MN)
BOILER CASING
70 8666-8540 CASING ASSEMBLY FLUE-LINER
71 8666-8549 COMPLETE LEFT SIDE PANEL
72 8666-8550 COMPLETE RIGHT SIDE PANEL
73 8666-8551 FRONT PANEL ASSEMBLY FLUE LINER
8666-5536 BOILER SCREW FASTENERS PACK
CONTROL PANEL
75 8666-8564 COMPLETE 1.24 NG CONTROL PANEL HO
75 8666-8565 COMPLETE 1.24 B/P CONTROL PANEL HO
75 8666-8566 COMPLETE 2.24 NG CONTROL PANEL HO
75 8666-8567 COMPLETE 2.24 B/P CONTROL PANEL HO
76 9752-5362 PRE-ASSEMBLED PANEL
77 9655-9151 FRONT PANEL PLATE
78 8666-5544 COMPLETE CARD SUPPORT
79 8666-5545 COMPLETE REAR COVER
80 9752-5312 CONNECTOR COVER
81 8666-5546 COMPLETE PRE-ASSEMBLED FLAP
82 9655-9150 FLAP PLATE
83 8666-5547 CONTROL BUTTON KIT
8666-5548 PANEL ACCESSORY KIT
85 8806-5512 COMPLETE DISPLAY CARD
86 8806-5511 CPL WALL-MOUNT CENTRAL UNIT CARD
87 8666-5549 COMPLETE CHEM SAFETY CARD
88 9654-7000 4 A FUSE
91 8666-5582 COMPLETE ANSTOSS IGNITER
92 8666-5583 COMPLETE IGNITER SUPPORT
93 8666-5584 COMPLETE IGNITER COVER
8666-4926 ASSEMBLED 2-PIN CONNECTOR
WIRING HARNESSES
8666-4922 MAIN SUPPLY CABLE
8666-4923 PUMP CABLE
8666-4925 IONISATION SENSOR CABLE
8666-4924 UC-CS BUS CONNECTION CABLE
8666-4929 EARTH WIRE
8666-4930 2.24 BASIC HARNESS CH.HO
7/7
8666-4932 1.24 BASIC HARNESS CH.HO
8666-4934 HONEYWELL CABLE CONNECTOR
BACKPLATE
101 8666-1517 ASSEMBLE BACKPLATE
102 8666-0543 BACKPLATE HEIGHT EXTENSION
1 SERVICE
105 8666-8506 COMPLETE 1.24 CONNECTOR PANEL
106 8666-5551 UNEQUIPPED CONNECTOR PANEL PLUS FIXINGS
107 8666-5552 COMPLETE CENTRAL HEATING OUTLET VALVE
108 8666-5553 COMPLETE DOMESTIC HOT WATER OUTLET VALVE
109 8666-5554 COMPLETE GAS VALVE
110 8666-5555 CPL CENTRAL HEATING RETURN VALVE
111 8666-5558 COMPLETE BYPASS CONNECTING PIPE
112 8666-5562 161 MM CONNECTING PIPE KIT
113 8666-5575 231 MM CONNECTING PIPE KIT
114 8666-5574 COMPLETE FILLER TUBE
128 8666-5564 COMPLETE EVACUATION CONNECTOR
129 8666-5587 PIECES FOR CONNECTION
2 SERVICES
115 8666-8507 COMPLETE 2.24 CONNECTOR PANEL
116 8666-5551 UNEQUIPPED CONNECTOR PANEL PLUS FIXINGS
117 8666-5552 CPL CENTRAL HEATING OUTLET VALVE
118 8666-5553 CPL DOMESTIC HOT WATER OUTLET VALVE
119 8666-5554 COMPLETE GAS VALVE
120 8666-5555 COMPLETE CENTRAL HEATING RETURN VALVE
121 8666-5556 COMPLETE COLD WATER INLET VALVE
121a 8666-5570 D. C. W. ADJUSTER SCREW + VALVE FILTER
122 8666-5557 COMPLETE DISCONNECTOR
123 8666-5558 COMPLETE BYPASS CONNECTING PIPE
124 8666-5559 CPL DISCONNECTOR DOWNSTREAM CON. PIPE
125 8666-5560 CPL DISCONNECTOR UPSTREAM CONNECTOR PIPE
126 8666-5561 COMPLETE DISCONNECTOR FLOW PIPE
127 8666-5563 COMPLETE 2.24 CONNECTOR PIPE KIT
128 8666-5564 COMPLETE EVACUATION CONNECTOR
SUNDRY
8666-5565 PANEL SEAL PACK
8666-5566 BACKPLATE FIXINGS PACK
8666-5567 BOILER SEALS PACK
9731-0700 O-RING GREASE
11/00

15. WARRANTY
Thank you for purchasing a DE DIETRICH appliance,
and for the confidence in us that your purchase
demonstrates.
We would like to point out to you that the device will
retain its original qualities only if it checked and maintained
regularly.
Your installer and the entire DE DIETRICH network
are naturally ready, willing and able to assist you.
Warranty conditions
Your device is warranted against all manufacturing
defects from the date of purchase for a period of 2
years.
We shall not be liable as manufacturer in the event of
incorrect use of the device, lack of or insufficient maintenance
of the device or incorrect installation of the
device (you are responsible for assuring that the boiler
is installed by a professional installer). In particular
we shall not be liable for damage, losses or injury
consequent upon installation that does not conform to:
- applicable laws and regulations,
- specific requirements relating to the installation,
- our manuals and instructions.
Our warranty is limited to exchange or repair of parts
agreed to be defective by our technical department
and excludes labour, travel and transportation costs.
37
Our warranty does not cover replacement or repair of
parts required because of normal wear and tear, incorrect
use, work carried out by unqualified third parties,
lack of or insufficient supervision or maintenance,
non-standard electrical output supply and use of inappropriate
or poor quality fuel.
The warranty covers sub-assemblies such as motors,
pumps, solenoid valves, etc. only if they have never
been removed from the boiler.

Notes
38

Notes
39

Fitter :
Servicing company :
BP 30 - 57, rue de la Gare
F-67580 MERTZWILLER
+ 33/3 88 80 27 00 - Fax : + 33/3 88 80 27 99
N° IRC : 347 555 559 RCS STRASBOURG
In the interest of customers, DE DIETRICH THERMIQUE are continuously endeavouring to make improvements in product quality.
All the specifications stated in this document are therefore subject to change without notice.
AD 14 b