SERVICE
SERVICE
MANUAL
COMPACT
3000
Mod. 3000 92X
Mod. 3000 93X
Mod. 3000 94X
GB
Foreword
This service handbook is intended to assist with servicing and fault-finding in caravans and motor
caravans equipped with the Alde Compact 3000 92x-94x. The handbook may also be of assistance
in ordering spare parts. It also provides general information on how Alde central heating systems
are designed, and how they operate.
When servicing components designed for LPG and 230 volts, national safety regulations must be
adhered to. After the boiler has been serviced, the service record must always be completed.
Alde International Systems AB
Service Department
NB! We reserve the right to make changes after this handbook has been printed.
2
GB
Contents
Page
3
4
5
5
6
6
7
7
7
8
8
8
8
9
9
9
10
10
10
Chap
1:0
1:1
2:0
2:1
3:0
3:1
About the Alde central heating system
Care of the heating system
About the Compact 3000
Technical data
Fault-finding
The electrical heating cartridge does not
work
3:2 The LPG boiler does not start
3:2:1 The LPG boiler shuts down on start-up
3:2:2 No ignition spark
3:2:3 Ignition spark is generated but the boiler
does not start
3:3 The LPG boiler starts but goes out after
approx. 10 seconds
3:4 The LPG boiler starts and switches off at
short intervals
3:5 Noisy fan
3:6 Noisy burner
3:7 Unstable or violent ignition
3:8 Other technical information
4:0 Replacing components
4:1 Replacing the printed circuit board
4:2 Replacing fan
Page
11
12
12
12
13
14
15
16
16
17
17
18
19
20
21
21
21
22
23
24
25
Chap
4:3
4:4
4:5
4:6
4:7
4:8:1
4:8:2
4:9
4:10
4:11
5:0
6:0
6:1
6:2
6:3
6:4
6:5
7:0
7:1
8:0
8:0
Replacing a burner (older model)
Replacing a burner (new model)
Replacing the spark electrode
Replacing the flame sensor
Replacing the solenoid valve
Replacing a 1 kW heating cartridge
Replacing a 2 kW heating cartridge
Replacing the operating thermostat
Replacing the overheating protection device
Replacing the pressure switch
Safety check
Wiring diagram with control panel 3000 266
Wiring diagram with control panel 3000 380
Wiring diagram for 3000 465 A, B
Circuit diagram 12 V and 230 V~
Control panel 3000 465
Flow chart 230 V~
Exploded diagram
Article numbers for exploded diagram
Spare parts
Spare parts
1:0 About the Alde central heating system
The central heating system uses two or three heat sources
– an LPG boiler and a 230 volt electrical heating cartridge,
as well as an externally-fitted heat exchanger for motor
caravans. The LPG boiler/heating cartridge heats up a
liquid mixture consisting of water (60%) and glycol (40%).
With the aid of a 12-volt circulation pump, which is located
in an expansion vessel, the warm glycol/water mixture is
circulated round the system through pipes and radiators.
Expansion
vessel
Flue
LPG boiler
Compact 3000
Warm
air-stream
Radiators
The radiators, which are fitted along the outer walls, heat
up the air, which rises and warms the walls and furniture.
As the warm air rises, it forms an air-barrier which keeps
the cold away from the windows.
Radiator
The temperature inside the caravan is controlled by a 12volt thermostat on the control panel.
Heat exchanger
2968
3
GB
1:1 Maintaining the heating system
Check the heating system’s fluid level regularly in the
expansion vessel. The level should be approximately 10
mm above the ”min” mark when the system is cold. The
heating system should be filled with a mixture of water and
glycol. For preference, use high quality pre-mixed glycol
(with inhibitor) intended for use in aluminium heating
systems. If using concentrated glycol, the mixture should
consist of 60% water and 40% glycol. If the heating
system will be exposed to temperatures below –25°C, the
glycol content must be increased, but not to more than
50%.
Any vessels used in handling the liquid must be spotlessly
clean, and the pipes in the heating system must be free of
contamination. This will prevent the growth of bacteria in
the system. The glycol mixture should be changed every
second year, since its ability to protect against corrosion,
for example, will deteriorate.
The glycol content should be checked before topping up
with new liquid. This will ensure that the concentration of
glycol in the mixture is not too high.
If the fluid level in the expansion tank falls for reasons
other than evaporation, check all joints, drain cocks and
bleeder screws to ensure that they are not leaking. If the
glycol-water mixture leaks out, rinse with water and wipe
up.
Never allow the heating system to stand empty of glycol
fluid.
Filling pump
Art nr 1900 810
4
Adding liquid:
Ensure that the vehicle is standing level, and check that
the bleeder screws and drain cocks are closed. Release
the plastic nut on the circulation pump, located on the
expansion vessel, and lift out the pump. Pour the glycol
mixture slowly into the expansion vessel, using a watering
can. When the system is being filled, air-pockets may
form, depending on how the pipe-system has been
installed. A good indication that there is air in the system
is when the heat only travels a few metres along the pipe
from the boiler, despite the fact that the circulation pump
is operating.
To make refilling and bleeding easier, we recommend
using the Alde filling pump which quickly both fills and
bleeds the system automatically.
Bleeding a caravan heating system (manually):
The LPG boiler must be switched on and the circulation
pump switched off. Start by opening the bleeder screws
(please refer to the vehicle instruction book for their
location). Leave them open until liquid escapes through
the spout at the air screw. Switch on the circulation pump
and let it run for a while. Check whether the pipes and
radiators all around the caravan are warm.
If air still remains in the system, try the following:
The LPG must be switched on and the circulation pump
switched off. Lower the front of the caravan as far as
possible using the jockey wheel. Leave it in this position
for several minutes, to allow any air to rise to the highest
point in the system. Open the bleeder screw at the highest
point and keep it open until all the air has escaped. Raise
the front of the caravan as high as possible using the
jockey wheel, and repeat the process. Return the caravan
to a horizontal position and start the circulation pump.
Check that the heat is circulating all around the caravan.
When bleeding a bogey wagon or a motor caravan, it is
easier to park on a steep slope, or raise the vehicle using
a jack.
GB
2:0 About the Compact 3000
The set-up of the boiler
The boiler consists of three eccentrically-fitted pipes. The
innermost pipe is a heat exchanger made from extruded
aluminium. This is surrounded by a water jacket containing
a 40% glycol mixture which is the fluid for the heating
system. The fresh-water heater is located outside the
water jacket. The two outer pipes, as well as their ends
and connections, are made from stainless steel.
The heat exchanger is divided into two semi-circular parts
by a u-shaped baffle plate. The burner is located in the
upper semi-circle, the combustion chamber. The baffle
plate leads the flue gases back into the lower part of the
section, which constitutes the convection part.
The burner unit is fitted on the end of the heat exchanger.
It consists of a combustion fan, burner, solenoid valve
with built-in relief valve and intake/exhaust connections.
The exhaust gases escape through the inner tube, and
fresh air enters through the outer tube. The exhaust
fumes exit the vehicle via a hose and flue fitted either to
the roof or to the wall. Fresh air enters via the same flue
(balanced draft).
2 or 3 electrical heating cartridges are fitted to the upper
part of the water jacket. The output
of the cartridges is either
2x1 kW or 3x1 kW
(alt. 2+1 kW), depending
on boiler model.
How the boiler works.
When the room thermostat calls for heat, i.e. the temperature in the vehicle is lower than the set room
temperature, the circulation pump starts. The liquid in the
heating system then starts circulating, and cold liquid
enters the boiler. The boiler’s operating thermostat senses
that the temperature of the liquid is too low. A signal is sent
to switch on the fan. When the pressure in the pressure
switch is sufficiently high, a signal is sent to the electronics
box to generate an ignition spark and to open the solenoid
valves to allow gas to enter the system. Once the
temperature in the vehicle has reached the temperature
set on the room thermostat, the circulation pump stops.
The operating thermostat senses that the liquid has
reached the right temperature and the boiler is switched
off. When the temperature of the liquid has fallen a few
degrees again, the boiler restarts. This ensures that there
is always hot liquid available when the room thermostat
calls for heat, and that the fresh water in the boiler is
always warm.
An electrical heater works in the same way, but the signal
from the thermostat is sent to the relays which start the
electrical cartridges.
Electronics box
Sensors
Overheating protection
Water jacket,
glycol mixture
Thermostat
Fan
Solenoid valve
Hot water
jacket, fresh
water
Pressure
switch
Burner
Electrical heating
cartridges
2:1 Technical data
Measurements:
Height Width Depth
Boiler size:
300 mm 345 mm 490 mm
Rec.min.install.dimensions. 310 mm 400 mm 550 mm
Weigh:
16,5 kg
Gas:
Pressure:I3+ 28-30/37 mbar, I3B/P 30 mbar, I3B/P 50 mbar
Output, propane:
5,2 kW
Output, butane:
6,0 kW
Consumption, propane:
380 g/h
Consumption, butane:
430 g/h
Liquid volume/Pressure
Liquid volume, glycol mix:
4,1 litre
Liquid volume, fresh water:
8,4 litre
Max pressure, heating system: 0,5 bar
Max pressure, fresh water:
3,0 bar
230 V ~
Output electrical cartridge(2 kW): 1050+1050 W
Output electrical cartridge (3 kW): 1050+1050+1050 W
12 V DC
Current consumption:1 amp (max)incl.circulation pump
Fuse:
2 amp
5
GB
Be aware of the risks of 230 V during all service work
3:0 Faultfinding
3:1 The electrical heating
cartridge does not work
Cause:
- Check that the changeover switches on the control
panel are in the correct positions (see operating
instruction for boiler).
- The 12 V fuse has blown.
- No or low voltage to the boiler. (< 12 V).
- 230 volt not connected.
- The overheating protection device has been triggered.
- The thermostat is broken/damaged.
- Damaged printed circuit board.
- Damaged electrical heating cartridge.
- Faulty wiring or wire connections.
Action:
During faultfinding, the hot water switch must be in the
ON position and the power plug switched to 2 or 3 kW on
the control panel.
- Check that the 12 V fuse (see fig. 1 A) is intact.
- Measure the input voltage. It must be no lower than 10.8
V.
- Check that the 230-volt cable is connected and that the
vehicle is connected to a 230-volt outlet.
- Check that the overheating protection device has not
tripped. If necessary, reset by first unscrewing the black
protective cap, then pressing down the reset button (see
fig. 1 B). When the overheating protection device has
been reset, there must be a 12-volt input on one flat-pin
terminal and 12-volt output on the other (see fig. 2 A),
otherwise it is defective and must be replaced.
N.B! If the overheating protection device has tripped it
cannot be reset until the boiler has cooled 10-20°C.
Before the boiler is restarted, check that it has been bled
thoroughly.
- Check that the operating thermostat is turned to the
maximum clockwise position (see fig. 1 C).
- Check that there is voltage (12 V) on flat-pin terminal 12
(grey cable, low temperature) and terminal 22 (blue
cable, high temperature), see fig. 2. If there is no voltage
on terminals 12 and 22, but there is voltage on terminal
11 (red cable), the operating thermostat must be replaced.
- Check that there is voltage on pos. 9 on the P1 printed
circuit board (see fig. 3). If not, the printed circuit board
must be replaced.
- Check that there is voltage on pos. 12 and 15 on the P1
printed circuit board (see fig. 3). If not, there is a fault in
the wiring or on the control panel.
- Check the resistance of the electrical heating cartridge
(approx. 50 ohm for 1 kW, and 25 ohm for 2 kW) and the
insulation to earth (> 1 Mohm). In the event of a fault,
replace the cartridge.
- Check that the wiring connections are intact and correctly
fitted.
6
- If none of the above measures solves the problem,
replace the printed circuit board. The fault will lie in
the control relays for 12/230 volts.
Fig 1.
C
B
A
Fig 2.
Grey 12
A
Blue 22
Red
Red 11
Fig 3.
9
12
15
GB
3:2 The LPG boiler does not start
Initial check:
- Disconnect the ignition cable from the electronics box
and start the boiler. The electronics box should make a
clicking sound for about 10 seconds. If you can hear the
clicking, continue to section ”3:2:3 Ignition spark is
generated but the boiler fails to start”.
3:2:1 The LPG boiler shuts down on
start-up
”Red LED comes on immediately”
Cause:
- Resetting time too short.
- The pressure switch does not cut out.
- Fault in electronic ignition unit.
- Faulty wiring.
- Faulty printed circuit board.
Action:
- Reset the electronic ignition unit by switching off the
boiler on the control panel (the red LED goes out) and
wait at least 30 seconds before attempting a restart.
- Check that the pressure switch cuts out. There should
be 12 V on the white cable, connection no. 1 on the
pressure switch (fig. 4 A). If there is no voltage, replace
the pressure switch.
- Replace the electronic ignition unit.
- Check that the wiring connections are intact and correctly
fitted.
- Replace the printed circuit board with a new one.
3:2:2 No ignition spark
Cause:
- Check that the changeover switches on the control
panel are in the correct positions (see the boiler operating instructions).
- The 12 V fuse has blown.
- The overheating protection device has tripped.
- The red LED on the control panel is lit (shut-down).
- No or low voltage on the boiler (< 12 V).
- The operating thermostat is broken/damaged.
- The pressure generated by the fan is too low.
- The pressure switch does not come on.
- The printed circuit board is damaged.
- Faulty electronic ignition unit.
- Faulty wiring.
Action:
- Check that the 12 V fuse (see fig. 1A) is intact.
- Reset the electronics by switching off the boiler on
the control panel (the red LED light goes out) and wait
approx. 20-30 seconds before attempting to restart. If
the red LED comes on again, please refer to section
“3:2:1 The LPG boiler shuts down on start-up”.
- Check the incoming voltage, is must be no lower than
10.8 V.
- Check that the overheating protection device has not
tripped. If necessary, reset by first unscrewing the black
protective cap, then pressing the reset button (see fig. 1
B). When the overheating protection device has been
reset, there should be a 12-volt input on one flat-pin
connector, and a 12-volt output on the other (see fig. 2),
otherwise it is defective and must be replaced.
NB! If the overheating protection device has tripped, it
cannot be reset until the boiler has cooled by 10-20°C.
Before the boiler is restarted, check that it has been bled
thoroughly.
- Check that the operating thermostat is turned to the
maximum clockwise position (see fig. 1 C).
- Check that there is voltage (12 V) on flat-pin terminal 12
(grey cable, low temperature) and terminal 22 (blue
cable, high temperature) see fig. 2. If there is no voltage
on terminals 12 and 22, but there is voltage on terminal
11 (red cable), the operating thermostat must be replaced.
- Check that the hoses (fig. 5) between the fan housing
and pressure switch are intact and correctly fitted.
- Check that the voltage to the fan is at least 9 volts and
that no abnormal noise can be heard. If there is not 9 V
+/-0.2 volt, the printed circuit board must be replaced. At
9 volts, the current consumption must be approx. 200
mA. In the event of a fault, change the fan.
- Check that the pressure switch is making a clicking
noise 2-5 seconds after the fan has started, or check that
there is voltage on the flat-pin terminal of the blue cable,
connection no. 2 (see fig. 4 B).
- Check that the wiring connections are intact and are
correctly fitted.
- Replace the electronic ignition unit. If this has no effect,
replace the printed circuit board.
Fig 4.
B
A
Fig 5.
7
GB
3:2:3 Ignition spark is generated but
the boiler does not start
Cause:
- No or poor gas supply.
- No or faulty spark on the spark electrode.
- The solenoid valves do not open.
- Faulty soft start valve.
- Faulty electronic ignition unit.
- Nozzle blocked.
- Faulty wiring.
- Flue blocked.
Action:
- Check that the gas pressure to the boiler is correct (2850 mbar).
- Check that the ignition cable is intact and that there are
no short-circuits along the cable.
- Check when starting that voltage is being supplied to the
solenoid valves. If not, replace the electronic ignition
unit.
- Check that a clicking sound can be heard from the
solenoid valves. Check the valves one at a time by
removing the flat-pin contacts. Replace if there is a fault.
- Remove the soft start valve (see the exploded diagram)
and attempt to restart. If the boiler now ignites, the soft
start valve must be changed. (NB! The boiler ignites a
little harder without the soft start valve).
- Remove the burner and check that the spark electrode
is intact and correctly fitted (see fig. 6). Replace if
necessary.
- Remove the nozzle and blow the nozzle and gas pipe
clean.
- Check the wiring contact points again.
- Check that the exhaust cowl and the intake/exhaust
hoses are free from objects that may obstruct the air
supply.
Fig 6
Flame
sensor
Spark
electrode
8
(red LED comes on)
Cause:
- The flame sensor cable is damaged.
- Faulty electronic ignition unit.
- Sensor damaged or incorrectly positioned.
Action:
- Check that the flame sensor cable is intact and correctly
connected.
- The only way to check whether the electronic ignition
unit is working is to change it and then check that the
boiler is operating properly.
- Remove the burner and check that the flame sensor is
intact and correctly fitted (see fig. 6). Replace the flame
sensor if necessary.
3:4 The LPG boiler starts and
switches off at short intervals
Cause:
- Voltage to boiler too low (< 12 V).
- Poor contact point in the wiring (earth fault).
- Pressure switch damaged or incorrectly connected.
- Ignition unstable.
- Flue blocked.
Action:
- Measure incoming voltage. It must be no lower than 10.8
V.
- Check the wiring connections, particularly the earth
connections.
- Check that both hoses between the pressure switch and
the fan housing are connected (see fig. 5).
- Replace the pressure switch.
- If the problem persists, please refer to “Unstable or
violent ignition”.
- Check that the exhaust cowl and the intake/exhaust
hoses are free from objects that may obstruct the air
supply
3:5 Noisy fan
2,5-3,5 mm
Spark
electrode
3:3 The LPG boiler starts but goes
out after approx. 10 seconds
Cause:
- The fan motor is damaged (worn).
- Impeller out of balance.
- Impeller touches fan housing.
Action:
- Remove the fan and check whether the impeller has
touched the fan housing (wear marks on the fan housing).
If necessary adjust the fan housing axially.
- Replace the fan.
Flame
sensor
GB
3:6 Sound from the burner
Action:
- Whistling sound from the burner on 92x-93x. Change to
burner 3000 444.
3:7 Unstable or violent ignition
Cause:
- The exhaust/intake hoses are too short.
- The exhaust/intake hoses are damaged or loose.
- The exhaust cowl is blocked.
- Incorrect gas pressure.
- Blocked or faulty soft start valve.
- Faulty nozzle.
- Low spark frequency.
- The pressure switch does not shut off or has stuck.
- The solenoid valves are leaky.
Action:
- Check that the intake/exhaust hoses are at least 2
metres long and that they are undamaged and correctly
fitted at the boiler and flue (if a wall flue is fitted, 0.7-1.5
m).
- Check that the flue is free from objects that may obstruct
the air circulation.
- Check that the gas pressure to the boiler is correct (2850 mbar).
- Where the ignition is unstable, remove the soft start
valve and test-start the boiler. The start should now be
stable, but with a more violent ignition than normal.
Replace with a new soft start valve or clean the old one
and carry out another test-start.
- Unscrew the nozzle and check that it is marked “230”.
- Detach the ignition cable from the electronic ignition unit
and start the boiler. A clicking sound should be heard
from the electronic ignition unit, with a frequency of at
least 2 Hz at 12 volts (two clicks per second). If the
frequency is too low the ignition electronics must be
replaced.
- Check that the ignition cable is intact and that there are
no short-circuits along the cable.
- Remove the burner and check that the spark electrode
is correctly fitted (see fig. 6) and undamaged. Replace/
adjust if necessary.
- Using a leakage tester, for example, check that no gas
is passing through the boiler when it is switched off. If a
leak is discovered, check that all gas connections are
tight. If there is no noticeable external leakage, replace
the solenoid valve
3:8 Other technical information
•
•
•
•
•
•
The electronic ignition unit may emit a slight high
frequency sound during operation.
Boiler models 3000 92x and 300093x are intended
only for roof flues.
Boiler model 3000 94x is intended only for wall flues.
Boilers with manuf. no. 10921 and higher have circuit
board rev C, which means that the fan does not start
if the pressure switch is “on”, and there is a new
voltage stabilisation which handles lower voltages
(10 V).
Boilers with manuf. no. 7536 and lower may have a
fault in the fan that causes a whistling sound.
If there is a resonant noise on boiler model 3000 94x,
insulate the exhaust hose with insulation hose art. no.
1900 233.
9
GB
4:0 Replacing components
Always switch off the 12 V DC and 230 V ~
power supply, and turn the main gas cock to the
”off” position before starting any servicing.
4:1 Replacing the printed circuit
board
The seals (marked in red) must NOT be broken
unless special permission has been obtained
from Alde.
4:2 Replacing fan
1.Remove the cover and service panel on the boiler.
2.Detach the blue (N) (fig. 7 A) and brown (R) (fig. 7 B)
cables at the cable ports on the printed circuit board, and
remove the blue (N) (fig. 7 C), brown (R) (fig. 7 D) and red
(R) (fig. 7 G) cables from the electrical heating cartridge.
3.Detach the white 15-point connection block (fig. 7 E)
from the printed circuit board.
4.Remove the screw behind the connection block (fig 7
H).
5.Remove the printed circuit board by pressing together
the hooks on the 5 plastic spacers (fig. 7 F), and pulling
out the circuit board.
6.Push the new board firmly into the spacers and connect
the cables as shown in fig. 7.
7.Refit the service door and cover and test-run the electrical
heating cartridge.
Fig 7.
1. Remove the cover and the service panel on the boiler.
2. Disconnect the positive (red, fig. 8 A) and negative
(black, fig. 8 B) cables on the fan motor.
3. Unscrew the 4 plate screws (fig.8 C) securing the fan
in the fan housing.
4. Tilting the fan towards the boiler body, lift it upwards out
of the fan housing (see fig. 9).
5 Fit the new fan by following these instructions in
reverse.
NB! Take care not to damage the impeller when fitting the
fan.
6. Fit the service panel and lid and test-run the boiler.
(NB! In a small number of boilers, the gas pipe is fitted
in such a way that the fan cannot be extracted without
first removing the gas pipe. Do not forget to check that
the seal is tight).
Fig 8.
C
G
D
A
B
A
E
F
F
F
B
C
H
Fig 9.
10
C
GB
4:3 Replacing a burner (older model for new model)
When a fault occurs in the burner on boiler models no. 3000 921-926, the burner should be replaced with a
new model (art nr 3000 385).
1. Remove the cover and end plate from the boiler.
2. Remove the end plate (fig. 10 A) on the burner housing.
3. Detach the spark electrode and sensor cables from the
electronic ignition unit.
4. Using two spanners, detach the gas pipe between the
burner and the solenoid valve at both connections (fig. 10
B). Pull out the gas pipe and the rubber grommet (fig. 10
C) from the burner housing.
5. Slacken the screw (fig. 11 A) at the top of the burner
housing which holds the burner in place.
6. Pull the burner straight out of the burner housing (fig.
12).
7. Fit the new, unperforated rubber grommet in the burner
housing (fig. 13 A).
8. Fit the new burner (insert it straight in) and secure it via
the end plate in the burner housing (fig. 13 B).
9. Secure the enclosed screw in the same place as the
burner was fastened (fig. 11 A).
10. Secure the gas pipe to the solenoid valve (fig. 13 C)
and to the burner (fig. 13 D). Remember to check that the
cones are correctly fitted to the pipes. Using two spanners, tighten the nuts on the gas pipe to 7-9 Nm.
11. Fit the ignition spark and flame sensor cables to the
electronic ignition unit
12. With the boiler operating, check the system and
connections for any leaks using a leak detector spray.
Once this is done, fit the end plate and cover.
Fig 10.
Fig 12.
B
C
B
A
Fig 11.
Fig 13.
C
A
A
B
D
11
GB
4:4 Replacing a burner (new model)
4:5 Replacing the spark electrode
Applies to boilers with model no. 3000 927 or higher.
1. Remove the cover and end plate from the boiler.
2. Detach the spark electrode and sensor cables from the
electronic ignition circuitry.
3. Using two spanners, unfasten the gas pipe nuts (fig. 14
A) at the burner and the solenoid valve (fig. 14 B).
4. Detach the end plate and burner by slackening the
screws (fig. 14 C) on the burner housing.
5. Pull end plate and burner straight out of the burner
housing (fig. 15).
6. Fit the new burner (insert straight) and secure it via the
end plate in the burner housing (fig. 14 C).
7. Secure the gas pipe to the solenoid valve (fig. 14 B) and
to the burner (fig. 14 A). Remember to check that the
bevels are correctly fitted. Using two spanners, tighten
the nuts on the gas pipe to 7-9 Nm (fig. 14).
8. Fit the ignition spark and flame sensor cables to the
electronic ignition unit.
9. With the boiler operating, check the system and
connections for any leaks using a leak detector spray.
Once this is done, fit the end plate and cover.
When replacing the spark electrode, also replace
the flame sensor.
1. Detach the burner as per instructions in 4:4.
2. Remove the nut (fig. 16 A) and pull the spark electrode
(fig. 16 B) straight backwards.
3. Fit the new spark electrode and secure it. Check that
the distance between the tip of the spark electrode and the
mesh cover of the burner is 2.5-3.5 mm, and that the spark
electrode is correctly positioned (see fig. 6).
4. Fit the burner in accordance with instructions and teststart the boiler.
Fig 14.
C
A
Fig 15.
4:6 Replacing the flame sensor
When replacing the flame sensor, also replace the
spark electrode.
1. Detach the burner in accordance with 4:4.
2. Remove the nut (fig. 16 C) and pull the flame sensor
(fig. 16 D) straight backwards.
3. Fit the new flame sensor, ensuring that the tip of the
flame sensor is positioned above the burner in accordance
with fig. 6. Secure the flame sensor.
4. Fit the burner in accordance with instructions and teststart the boiler.
B
Fig 16.
A
B
C
D
12
GB
4:7 Replacing the solenoid valve
For boilers where the solenoid valve is fitted to the
burner housing (up to serial no. 04444).
1. Remove the cover and end-plate on the boiler.
2. Unfasten the cables (black, brown and yellow/green)
on the solenoid valve (fig. 17 A-C).
3. Using two spanners, slacken the nuts on the incoming
gas pipe (fig. 18 A) and the gas pipe to the burner (fig. 18
B), and remove the rubber cap from the soft start valve
(fig. 17 D).
4. Detach the pressure switch hoses to and remove the
insulation next to the burner housing.
5. Unscrew the two plate screws (fig. 18 C) which fasten
the gas valve angle bracket (fig. 18 D) to the burner
housing.
6. Extract the solenoid valve and transfer the angle bracket
to the new solenoid valve (attached underneath with a
screw).
7. Fit the new solenoid valve by following the instructions
in reverse order.
8. Using two spanners, tighten the nut on the incoming
gas pipe to 25-30 Nm, and the gas pipe to the burner to 79 Nm.
Fig 17.
Remember to check that the bevels are correctly fitted to
the pipes. With the boiler operating, check the system and
connections for any leaks using a leak detector spray
9. Fit the end plate and cover.
For boilers with serial numbers form 04445 and
upwards.
1. Remove the cover and end plate on the boiler.
2. Unfasten the cables (black, brown and yellow/green)
on the solenoid valve (fig. 17 A-C).
3. Using two spanners, slacken the nuts on the incoming
gas pipe (fig. 18 A) and the gas pipe to the burner (fig. 18
B), and remove the rubber cap from the soft start valve
(fig. 17 D).
4. Extract the solenoid valve (fig. 20) and fit the new one
by following the instructions in reverse order.
5. Using two spanners, tighten the nut on the incoming
gas pipe to 25-30 Nm, and the gas pipe to the burner to 79 Nm. With the boiler operating, check the system and
connections for any leaks using a leak detector spray.
6. Fit the end plate and cover
Fig 19.
D
A
B
B
A
A
C
B
Fig 18.
Fig 20.
B
C
A
D
13
GB
4:8:1
Replacing a 1 kW heating cartridge
1. Drain the glycol mixture from the heating system.
2. Remove the cover and end plate.
3. Remove the cables from the heating cartridge.
4. Slacken the nut in the centre of the electrical heating
cartridge electrode (fig. 21).
5. Give the t-screw on the heating cartridge a one-quarter
turn (fig 22).
6. Extract the heating cartridge by pulling straight backwards (fig. 23).
7. Clean around the edges where the old heating cartridge
has been located.
8. Then fit the new heating cartridge, give the t-screw a
one-quarter turn and tighten the nut.
NB! Before fitting the heating cartridge, check the
direction in which to turn the t-screw.
NB! Check that the rubber plug is fully inserted and
push the lower edge of the heating cartridge while
tightening the nut. Tighten the nut to 4 Nm.
9. Connect the cables according to fig. 24 (A=brown,
B=blue, C=yellow/green). Fit the cover and end plate.
Add glycol mixture. Bleed and test-run the boiler.
Fig 21.
Fig 23.
Fig 22.
Fig 24.
B
A
14
C
GB
4:8:2
Replacing a 2 kW heating cartridge
1. Switch off the 230 V supply.
2. Drain the glycol mixture from the heating system.
3. Remove the cover and end plate.
4. Remove the solenoid valve in accordance with section
4:7.
5. Remove the cables from the heating cartridge.
6. Unscrew the two plate screws and remove the angle
bracket (does not apply to boilers with serial numbers of
4445 or higher).
7. Slacken the nut in the centre of the electrical heating
cartridge electrode (fig. 25), and unscrew it approx. 10
mm.
8. Tap the nut lightly to release the rubber plug and extract
the heating cartridge by pulling straight backwards.
9. Clean around the edges where the old heating cartridge
has been located. Then fit the new heating cartridge,
securing it with the nut so that the rubber plug expands.
NB! Check that the rubber plug is fully inserted and
push the lower edge of the heating cartridge while
tightening the nut. Tighten the nut to 4 Nm.
10. Fit the angle bracket, if there is one, and then the
solenoid valve in accordance with the instructions. Connect
the cables in accordance with fig. 27 (A=brown, B=blue,
C=yellow/green, D=red). Fit the cover and end plate. Add
glycol mixture. Bleed and test-run the boiler.
Fig 25.
Fig 27.
A
B
C
B
D
Fig 26.
15
GB
4:9 Replacing the operating
thermostat
4:10 Replacing the overheating
protection device
1. Remove the cover on the boiler.
2. Remove the locking clip (fig. 28 A). Remove the split
pin (fig. 24 B) on the immersion pipe. Remove the
overheating protection device sensor first (fig. 29), and
then the operating thermostat sensor (fig. 30 A).
3. Unscrew the two screws which secure the operating
thermostat (fig. 31 A) to the fastening plate, and remove
the cables from the flat-pin connections.
4. Transfer the contact spring (fig. 30 B) to the new
operating thermostat. The spring must be fitted with the
rear end of the bulb uppermost, so that it pushes the
sensor downwards into the immersion pipe.
5. First insert the operating thermostat sensor all the way
to the very end of the immersion pipe. Then insert the
overheating protection device sensor as far as possible.
Fit the split pin on the immersion pipe.
6. Attach the operating thermostat to the service panel
(NB! Use the original screws only) and connect the cables
in accordance with fig. 2 (blue, grey and two red).
7. Fit the cover and test-run the boiler.
1. Remove the cover on the boiler.
2. Remove the locking clip (fig. 28 A). Remove the split
pin (fig. 24 B) on the immersion pipe and take out the
sensor (fig. 29).
3. Remove the black plastic cap and unscrew the nut (fig.
31 B) which holds the overheating protection device to the
service panel. Release the cables (fig. 2 A) from the flatpin contacts and change the overheating protection device.
4. Fit the new overheating protection device by following
the instructions in reverse order. Test-run the boiler.
Fig 28.
Fig 30.
A
B
B
A
Fig 29.
Fig 31.
A
B
16
GB
4:11 Replacing the pressure switch
1. Remove the cover and end-plate from the boiler.
2. Detach the blue, white and red cables on the pressure
switch.
3. Push back the metal securing plate and pull out the
pressure switch (fig. 32 A).
4. Detach the rubber hoses (fig. 32 B) from the pressure
switch (do not pull the hoses, unscrew them).
5. Refit the hoses to the new pressure switch before
pushing it into place.
6. Fasten the pressure switch and fit the cables to the flatpin contacts in accordance with fig. 32.
7. Fit the cover and end plate to the boiler. Test-start the
boiler.
5:0 Safety check
The safety check must be carried out after every service.
Check:
• That the intake/exhaust hoses and flue are tight and
undamaged.
• That the LPG pipes are tight. Pressure test the system.
• That the 230 V~ earth cable is connected.
• That the safety valve on the water heater is not
blocked.
• That the heating system is filled with glycol mixture
up to the mark on the expansion vessel.
Fig 32.
A
Blue
White
Red
B
17
GB
6:0 Wiring diagram with control panel 3000 266
18
GB
6:1 Wiring diagram with control panel 3000 380
19
GB
6:2 Wiring diagram for 3000 465 A, B
A.
B.
20
GB
6:3
Circuit diagram 12 V and 230 V~
6:4 Control panel 3000 465
6:5 Flow chart 230 V~
21
GB
7:0 Exploded diagram
1
2
5
47
6
56
2
55
54
7
4
8
7
6
53
3
9
10
11
14
12
8
13
57
52
20
19
17
18
26
24
23
25
45
30
31
32
33
59
44
43
22
29
51
49
48
2
35
42
41
40
34
39
36
37
38
2
22
21
28
50
47
46
15
2
27
47
16
GB
7:1 Article numbers for exploded diagram
1. 3000 133 Metal cover
2. 2900 258 Self-tapping screw B6 x 9.5
3. 3000 195 Fan compl. (for 921)
3000 452 Fan compl. (for 92x and 93x)
3000 409 Fan compl. (for 94x)
4. 3000 247 Insulation
5. 3000 411 Hose connection compl.
6. 3000 372 Double clip
7. 3000 297 Rubber cap
8. 3000 324 Double clip
9. 2930 414 Sleeve
10. 3000 196 Rubber hose, L=190 mm
11. 3000 196 Rubber hose, L=55 mm
12. 3000 196 Rubber hose, L=125 mm
13. 3000 196 Rubber hose, L=110 mm
14. 3000 138 T-piece
15. 3000 168 Soft start valve
16. 3000 289 Solenoid valve compl.
17. 3000 278 Gas pipe
18. 2737 174 Screw M4x8
19. 3000 256 Electrical heating cartridge 1kW
3000 250 Electrical heating cartridge 2kW
3000 315 Electrical heating cartridge 3kW
3000 255 Blind plug for electrical heating
cartridge
20. 3000 240 Plug
21. 3000 159 Pipe
22. 3000 379 Angle connector
23. 3000 204 End plate
24. 3000 213 Gasket
25. 3000 206 Flame sensor
26. 3000 374 Burner (92x, 93x)
3000 398 Burner (94x)
27. 3000 205 Spark electrode
28. 3000 383 Nut
29. 2930 235 Cable grommet
30. 3000 407 Ignition kit compl.
31. 3000 385
3000 408
32. 3000 368
33. 3000 127
34. 3000 362
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
3000 365
3000 185
3000 246
3000 132
3000 231
3000 232
3000 157
7410 325
3000 286
2762 125
3000 351
3000 131
3000 261
3000 330
3000 333
3000 334
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
3000 367
3000 184
3000 327
4071 011
3000 460
3000 251
2959 120
3000 290
3000 143
3000 363
3000 166
Burner compl. (for 92x, 93x)
Burner compl. (for 94x)
Angle bracket
”SIT” pressure switch
Overheating protection device
compl.
Operating thermostat compl.
Casing
Insulation
Front end plate
Grommet
Plastic spacer
Electronic ignition unit
Self-tapping screw 2.9x25
Mains supply cable
Cable clamp
Service panel
Rear end plate
Insulation
Printed circuit board (for 921)
Printed circuit board (for 3 kW
heating cartridge)
Printed circuit board (for 2 kW
heating cartridge)
Wiring loom for 230 V
Wiring loom
Spring
Retaining clip
Boiler body compl.
Insulation
T-piece
Pressure relief valve
Pipe
Jet ”230”
Fuse 2 A
23
GB
8:0 Reservdelar
3
3
2
1
1
4
2
1. 3000 195 Fan complete (12 V for 3000 901-921)
2. 3000 452 Fan complete (9 V for 3000 92x-93x)
3. 3000 409 3000 452 Fan complete (9 V for 3000 94x)
Packed in cardboard box with Allen key for impeller.
1. 3000 231
2. 3000 168
3. 3000 289
4. 3000 278
3000 385 Burner compl. (for 92x-93x)(Ø 1.8 mm net)
3000 408 Burner compl. (for 94x)(Ø 2.0 mm net)
3000 407 Ignition kit incl. spark electrode, flame sensor,
cable grommet and gasket (for all models
24
Grommet
Soft start valve
Solenoid valve compl. with soft start valve
Gas pipe
GB
8:0 Reservdelar
3
2
1
4
2
3
4
5
6
1
7
1.
2.
3.
4.
5.
3000 286
3000 280
3000 367
3000 184
3000 330
3000 333
Mains supply cable
Cable
Wiring loom
Wiring loom
Printed circuit board (921)
Printed circuit board (92x-94x with 3 kW
heating cartridge
3000 334 Printed circuit board (92x-94x with 2 kW
heating cartridge
6. 3000 232 Spacer
7. 2762 125 Cable clamp
1. 3000 365 Operating thermostat ”lmit” including
retaining clip
2. 3000 327 Spring
3. 4071 011 Retaining clip
4. 3000 362 Overheating protection device ”lmit” compl.
4
1
3
2
2
1
1. 3000 127 ”SIT” pressure switch
2. 3000 411 Hose connection for pressure switch
1.
2.
3.
4.
3000 290
3000 157
3000 256
3000 250
3000 315
5. 3000 255
5
Pressure release valve
Electronic ignition unit
Electrical heating cartridge 1 kW
Electrical heating cartridge 2 kW
Electrical heating cartridge 3 kW
Blind plug for electrical heating cartridge
25
GB
26
GB
27
Wrangels allé 90 • Box 11066 • 291 11 Färlöv • Kristianstad • Sweden
Tel +46 (0)44 712 70 • Fax +46 (0)44 718 48 • www.alde.se • e-mail: info@alde.se
Rev. 747 (0111)
Alde International Systems AB