7202719-04 user gb..pdf
TRANSCRIPT
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4 Operating the appliance ..........................................................................14
4.1 Putting the appliance into operation ................14
4.2 Reading the various current values ..................14
4.3 Description of the parameters ...........................15
4.4 Modification of the user-level parameters ........15
4.5 Installation shutdown .........................................16
4.6 Frost protection ..................................................16
5 Checking and maintenance .....................................................................17
5.1 General instructions ...........................................17
5.2 Periodic checks ..................................................17
5.3 Filling the system ...............................................18
5.4 Bleeding the heating system .............................20
5.5 Draining the installation .....................................23
6 Troubleshooting .......................................................................................24
6.1 Error codes ..........................................................24
6.1.1 User reset ..............................................................25
6.1.2 Description of error codes .....................................266.1.3 Other error codes ..................................................26
6.2 ......................................27
7 Technical characteristics ........................................................................28
7.1 Technical characteristics ...................................28
8 Energy savings .........................................................................................29
8.1 Energy-saving advice .........................................29
8.2 Room thermostat and settings ..........................29
9 Warranty ....................................................................................................30
9.1 General ................................................................30
9.2 Warranty terms ...................................................30
Contents
2141210 - 119577-AGSubject to alterations
Problems and solutions
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3.1.4. Electricity generation
The boiler is fitted with a single-cylinder Stirling Microgenengine.
This engine functions by the repeated heating and cooling of a
quantity of helium (under pressure) in the cylinder. The gas is heated
at the top of the cylinder and cooled by water at the base of the
cylinder; the pressure difference thus created drives a piston whichmoves from the top to the bottom. The piston is fitted with magnets
which are driven through a fixed coil and thus generate an alternating
current with a frequency of 50 cycles per second (50 Hz).
To be able to operate, eVita must be connected to an
existing electrical circuit, 230 VAC, 50 Hz. The boiler uses
a three-wire cable for clean energy consumption and
supply of the electricity generated, approximately 1000
W. It is not necessary to allow for additional wiring for the
current generated.
When does the boiler produce electricity?
When there is a demand for heat, the Stirling engine burner will be
the first to come into service to produce heat for the central heating
and electricity. If it transpires that the quantity of heat required is
higher than can be provided by the engine's burner alone, the
auxiliary burner will come into service. In this way no concession is
made in the heated comfort of the dwelling. When the demand is for
domestic hot water only (in the case of a boiler which includes the
production of domestic hot water), only the auxiliary burner will come
into service. The engine's burner is not operating and, therefore, will
not generate electricity. In the case of a heating-only boiler associated
with an external hot water tank, the engine's burner will nevertheless
start in the event of demand for domestic hot water. In this event
electricity is generated.
When connecting to and disconnecting from the mains, a
short "bang" noise may be heard. This is not an anomaly
but a normal phenomenon.
eVita 25s - 28c 3. Description
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3.2 Main parts
1Smoke nozzle 2Casing/air box 3Heat exchanger front plate
4Degassing chamber 5Auxiliary-burner ignition transformer 6Engine burner ignition transform
7MicrogenStirling engine 8Start/stop resistance 9Instrument box
10Overload switch 11Air intake 12Outlet for measuring combustion
gases
13Heat exchanger front plate 14Ignition electrode supplementary burner 15Automatic air vent
16Ionization electrode supplementary
burner
17Condensation channel 18Condensate float switch
19Siphon 203-way valve
(Only on models with domestic hot water
production)
21Plate heat exchanger
(Only on models with domestic hot
water production)
22Flow sensor 23Safety valve 24Condensate evacuation hose
25Capacitor 26Air diffuser actuator 27Air diffuser
28Auxiliary Venturi burner 29Engine's Venturi burner 30Fan
31Water cooled seal 32Ionization electrode engine burner 33Ignition electrode engine burner
34Combined auxiliary-burner gas valve
unit
35Combined engine-burner gas valve unit 36Pressure gauge
37Shunt pump 38Expansion vessel
T001974-B
3
1
2
4
5
6
7
8
21
23
22
24
19
20
18
9 10
17
12
14
15
16
13
11
37
36
35
34
31
32
33
30
29
28
27
26
25 38
3. Description eVita 25s - 28c
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T001183-C
2 barMin. 1 bar
T001166-04-C
Boiler temp
State burner 1+2
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T000557-04-A
Boiler temp
State burner 1+2
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T001183-C
2 barMin. 1 bar
T001507-B
12
3
4
T000181-B
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5.3 Filling the system
1. Check the water pressure in the heating system.
If the water pressure is lower than 0.8 bar, more water
should be added. Fill the system with clean tap water
(advised water pressure is between 1.5 and 2.0 bar).
2. Open the valves on all radiators connected to the heating system.
3. Delete the request for central heating and DHW.
4. Check that the output generated is 0 W (Press the key several
times).
5. If the output generated is 0 W: Switch off the power in an
appropriate manner.
6. Wait until the temperature drops below 40C and the radiators
seem cold before filling the central heating system.
7. To fill with water, use a filling tube with two tap connections, a rag
and a bleed key.
T001183-C
2 barMin. 1 bar
12
3
4
T000181-B
T900057-A
T000185-A
T000845-A
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12.Open the filling/draw-off valve on the heating system.
13.Open the running water tap.
14.Use the pressure gauge to check the water pressure in the heating
system.
15.Close the water tap when the water pressure reaches 2 bar.
16.Close the filling/draw-off valve on the heating system. Leave the
tube on the filling/draw-off valve until the air is purged from the
installation.
When water is added, air gets into the heating system.
Degas the installation. After the air has been vented, the
water pressure can drop below the required level. Use thepressure gauge to check the water pressure in the heating
system. If the water pressure is lower than 0.8 bar, more
water should be added.
17.After filling the installation, switch the boiler on.
Filling and bleeding the installation 2 times a year should
be sufficient to obtain an adequate hydraulic pressure. If it
is often necessary to top up the installation with water,
contact your fitter.
5.4 Bleeding the heating system
It is essential that you vent any air in the appliance, the ducts or the
valves to prevent the noise annoyance likely to be produced during
heating or water draw-off. To do this, proceed as follows:
1. Open the valves on all radiators connected to the heating system.
T000850-A
T000853-A
12
3
4
T000181-B
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2. Set the room thermostat as high as possible.
3. Wait until the radiators are hot.
4. Delete the request for central heating and DHW.
5. Check that the output generated is 0 W (Press the key several
times).
6. If the output generated is 0 W: Switch off the power in an
appropriate manner.
7. Wait around 10 minutes until the radiators are cold.
8. Bleed the radiators. Start with the lower floors.
T001287-B
Boiler temp
State burner 1+2
T000184-A
T900057-A
T000185-A
T000854-A
3
1
4
5
2
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9. Open the bleed connection using the bleed key provided whilst
keeping a rag pressed against the connection.
10.Wait until water comes out of the bleed valve and then close the
bleed connection.
CAUTION
The water may still be hot.
11.Switch on the boiler. A vent cycle of a duration of around 3 minutes
is carried out automatically.
12.After venting, check whether the pressure in the installation is still
sufficient.
If the water pressure is lower than 0.8 bar, more watershould be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1.5 and 2.0 bar).
See chapter: "Filling the system", page 18.
13.Set the room thermostat or the regulator
Refer to the user instructions: eVita programmable
thermostat.
T000217-A
T000218-A
T001288-B
Boiler temp
Ruimtetemperatuur
1+2
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6 Troubleshooting
6.1 Error codes
The boiler is fitted with an electronic regulation and control unit. When
a failure is signalled, the boiler stops or becomes locked. One of the
following messages is displayed on the screen:
The screen displays and a blockage code:
1. Press the 3key ; The error code and an associated explanatorytext appear on the display.
2. The boiler controller performs an automatic reset.
The screen displays and at the same time as an error
code:
1. Press the 3key ; The error code and an associated explanatorytext appear on the display.
2. Press the 3key a second time ; The display indicates the type ofreset required (A service reset or a user reset).
A service reset must be carried out by the installer. Call
your fitter.
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6.1.1. User reset
Use the boiler control panel to carry out the reset.
1. Press the reset key.
2. The screen displays Reset end userand No(flashing).
3. Turn thekcontrol knob within 8 seconds toYes.
4. Press the OKkey to confirm the setting.
5. The screen displays Reset end userand Value adopted.
If the error code disappears, this signifies that the boiler is
again functioning normally. If the error code continues to
display, search for the cause in the error table and apply
the solution. If you are unable to eliminate the breakdown,
contact your installer:
Note the error code displayed.
T000568-04-A
Boiler tempState burner
313:Dry fire function
Boiler temp
Reset enduser
Bedieneenheid No
Boiler temp
Reset enduser
Bedieneenheid Yes
Boiler temp
Reset enduser
Value adopted Yes
6. Troubleshooting eVita 25s - 28c
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6.1.2. Description of error codes
Error code
Display screen
Probable causes Checking / solution
127
Legionella temp
4 Air in the heating circuit
4 Not enough water in the
installation
4 Degas the installation (If necessary)
4 Check the water pressure in the heating system:
Insufficient pressure: add water (1.5 - 2 bar)
157
Boiler flow thermostat
158
Condensate
164
Flow press switch HC
270
Exc temp diff h' exch
274
Protection against heating
if there is insufficient water
in the installation275
Zero flow aft deaer
276
Zero flow
277
Zero flow DHW
278
Max temp rise
261
Loss of flame Eng bu
Insufficient gas supply Check that the gas valve is fully opened
262
Loss of fl' Supp bu424
Rep loss flame Eng bu
425
Rep. loss of fl' Supp bu
6.1.3. Other error codes
If another error code is displayed, contact the installer. Before
contacting the installer, make a note of the following information:
4 Error code
4 Type of gas used
4 Boiler type
4 Manufacturing date
4 Serial no. of the appliance
This information can be found on the data plate affixed to the top of
the boiler.
T001292-D
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Problem Probable causes Solution
There is no domestic hot water.
The boiler is not switched on.
Check that the boiler is switched on.
Check the fuses and switches. Check that the gas valve is fully opened.
The DHW mode is deactivated. Activate the DHW mode.
The water pressure is too low (