Fiamma ELEKTRA User manual

USE AND
MAINT
ENANCE
MANUAL
ELECTRIC WALL BOILER
ONLYHEATING
Elektra. .. N HE series
EQUIPMENT COMPLIANT CE DIRECTIVE 2006/42 - IEC 60335-2-21:2012 with IEC 60335-
1:2010 with EN
60335-2-21:2003+A1:2005+A2:2008 - EN 60335-1:2012 - EN 62233:2008.
®

2
ELECTRIC WALLBOILER
SeriesELEKTRA. …NHE
Presentation
Thank you for choosing an electric wall boiler FIAMMA, built with the most modern
technologies, safe and tough materials, so as to ensure maximum efficiency of use, total
quality of the device and extreme safety for the user.
The series Elektra .. is built according to European standards dir. machines 2006/42 - IEC
60335-2-21:2012 IEC 60335-1:2010 and EN 60335-2-21:2003 + A1 : 2005 + A2 : 2008 -
EN 60335-1:2012 - EN 62233:2008 .
The obtained results can be summarized in the following key points:
- Noiseless functioning, thanks to maximum insulation of the device by means of
innovative special materials that ensures minimum heat loss.
- High degree of reliability, thanks to a careful choice of materials and to sever tests
carried out during production for each unit built.
- High performance with maximum efficiency, thanks to a modulation of electrical power to
the heating elements, according to the actual need of energy by the system. The system
D.E.S. manages the device with temperature probes positioned in each sensitive point of
the boiler, in order to reduce power consumption when the device is not used at the
maximum capacity or demand.
- The appliance is fully adjustable both in water temperature of the heating system (with
the possibility to choice of system at high and low temperature for underfloor systems).
- The assembly of the components has been realized in order to allow an easy access to
them, all from the front of the unit, for ordinary and extraordinary maintenance.
We recommend you to follow our instructions, and we suggest to contact the area
authorized service FIAMMA in order to prepare a planned maintenance contract which can
ensure suitable operation at maximum efficiency and safety, so that your machine use can
go a long way.
In renewing our thanks, our technical department and our sales network, are at your
disposal for any further information
FIAMMA GIRO s.r.l.
Company group
The company FIAMMA GIRO s.r.l. declines all responsibility for possible inaccuracies contained in this pamphlet, if due to printing
errors or inadvertent errors. However, reserves the right to make changes to its products that it deems useful or necessary, without
affecting the essential characteristics of the products manufactured and marketed.

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P
L
H
L
L
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Dimensions
The series Elektra. .. N has four power levels, but the same overall
dimensions:
Elektra.6NHE 6kWmaximum electricaloutput
Elektra.12 NHE 12kWmaximum electricaloutput
Elektra.18 NHE 18kWmaximum electricaloutput
Elektra.24 NHE 24kWmaximum electricaloutput
Appliance dimension Packaging dimension
L(Width): 400 mmWidth:440mm
H(Height) : 875 mm Height : 940 mm
P(Depth) : 300 mm Depth : 390 mm
Weight : 39 kg Weight : 41 kg

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VSR
M
RC
R
Electrical
supply
220
165
409580120  
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



Hydraulic connections – Dimensional of connection arrangement.
Hydraulic connections
MHeating delivery : ¾” M
RHeating return : ¾” M
VSR Heating safety valve (3 bar) : ½” F
RCManual Filling tap (restoring water pressure)
Bottom view (under the boiler)

5
Main technical features Elektra 6.. - Elektra 12.. - Elektra 18..
Elektra.6NHE 6kWmaximumelectricaloutput
Single-phase electrical supply 230 V - 50 Hz.
Weight : 39 kg.
Electrical / heat power available at heating: 6 kW obtained by n°.1 resistance
group (n°.1 3x2 kW).
Maximum head available at the pump 5 m H2O
Expansion vessel capacity of 8 lt.
Safety valve of heating circuit: 3 bar.
Maximum heating operating pressure: 2.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Maximumlimit of thermalsafetyheatingcircuit -boilerbody: 100 °C.
Elektra.12 NHE 12kWmaximumelectricaloutput
Single-phase electrical supply 230 V - 50 Hz.
Weight : 40 kg.
Electrical / heat power available at heating: 12 kW obtained by n°.2 resistance
groups (n°.2 3x2 kW).
Maximum head available to the pump 5 m H2O
Expansion vessel capacity of 10 lt.
Safety valve of heating circuit: 3 bar.
Maximum heating operating pressure: 2.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Maximumlimit of thermalsafetyheatingcircuit -boilerbody: 100 °C.
Elektra.18 NHE 18kWmaximumelectricaloutput
Single-phase electrical supply 230 V - 50 Hz.
Weight : 41 kg.
Electrical / heat power available at heating: 18 kW obtained by n°.3 resistance
groups (n°.3 3x2 kW).
Maximum head available at the pump 5 m H2O
Expansion vessel capacity of 10 lt.
Safety valve of heating circuit: 3 bar.
Maximum heating operating pressure: 2.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Maximumlimit of thermalsafetyheatingcircuit -boilerbody: 100 °C.

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Display General
switch hydrometer
Main technical features Elektra 24..
Elektra.24 NHE 24kWmaximumelectricaloutput
Single-phase electrical supply 230 V - 50 Hz.
Weight : 42 kg.
Electrical / heat power available at heating: 24 kW obtained by n°.4 resistance
groups (n°.4 3x2 kW).
Maximum head available to the pump 6 m
H
2
O .
Expansion vessel capacity of 10 lt.
Safety valve of heating circuit: 3 bar.
Maximum heating operating pressure: 2.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Maximumlimit of thermalsafetyheatingcircuit -boilerbody: 100 °C.
Switching-on the boiler
CONTROL PANEL
The control panel is composed of : display, function selection keys, general
switch and the hydrometer it is placed in the lower left corner
in front of the unit (see image above).

7
J7
J6
J5
J4
J3
J2
Using analogical hydrometer.
The analogical hydrometer control panel has a dial with unit of measure in a
bar, from 0 to 6 bar. The water pressure in the heating system is indicated by
the index of the black arrow.
The optimum pressure for the system is between 1 and 1.5 bar.
More than 1.5 bar you can have a maximum pressure of 2 bar (maximum
expansion of the system during the rise in temperature). More than 2 bar
pressure the system is not in the range of operation, and mechanical safety
valve (preset to 3 bar) can start to lose water.
The minimum operating pressure is 0.8 bar (+/- 0.2 bar). The differential
positive or negative tolerance is due to the operation of the water pressure
switch with fixed setting.
KEYBOARD PANEL (Control panel)
MEANING OF THE KEYS IN USER MODE
KEY FUNCTION
J5 Change and set parameters.
J6 Change and set parameters.
J7 ON - OFF Switching
Display temperature output / Display setpoint output
Unlock error of safety thermostat
J4 Summer – Winter switching
J2 Display / Increase of heating setpoint (or room temperature)
J3 Display / Decrease of heating setpoint (or room temperature)
J4+J7Start function degassing

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TURNING ON THE BOILER
The boiler is switched-on by means of the light General switch located on the
left of the display in the instrument panel of the boiler. Pressing the switch
upward to the ON position, it will light in the presence of single-phase supply
(230V-50 Hz).Then,itshall be pressed the ON-OFF ( J7 )on the keypad to
switch the power from stand-by to the operating position; the display will light
up of blue and will appear various symbols signaling function /faults etc.
At this point it shall be chosen the mode of operation, summer or winter
operation.
TEMPERATURE VARIATION OF THE HEATING CIRCUIT
When the apparatus has been set with the snow symbol (C
CC
C) for the wintry
functioning, you can change the maximum temperature of heating circuit
pressing one of the two keys with the radiator symbol located on the left of the
display (J2 and J3 keys).
The keywiththe symbolofthe
I+
(J2),increasesthetemperature,and
the keywiththe symbolof the
I
- (J3),decreasesthetemperature.
ON-OFF KEY
Display Simbols
The ON/OFF key (J7), in addition to put the
boiler in stand-by mode, allows to reset
(unlock) the apparatus in case of high
temperature lock.
If the lock would be caused by lack of water
pressure alarm, the recovery will be
automatic after that the hydric pressure will
be restored at the minimum operating level
(0,8 bar) by means of the opening and the closure of the charging tap placed under the
boiler (black handle).
The display has several symbols, signaling in addition to operation modes, also the
various alarm or system displays:

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INSTALLATION
TECHNICAL NOTE FOR INSTALLER AND TECHNICAL MAINTENANCE
HYDRAULIC SCHEME
(Elektra 12 N015 HE version)
SYMBOL MEANING
L
LL
LMalfunction
J
JJ
JRequest of burner switch-on
I
II
IHeating request
F
FF
FParameter menu activated
E
EE
EAnti-freeze request activated
C
CC
CWinter mode
B
BB
BSummer mode
A
AA
AOFF mode
Level of
modulation
Indicates the instantaneous power of the boiler from 0 to 100%

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Legend
- TSSafety thermostat. - rc Drain valve.
- PA Water pressure switch. - CC Boiler body.
- SThermowell for immersion sensor. - rsc Drain valve of boiler body.
- RHydraulic connection in-let heating circuit. - RC Boiler resistance of 6 kW.
- MHydraulic connection out-let heating circuit. - VE Expansion vessel heating circuit.
- VSR Safety valve heating circuit 1/2”x3 bar - rs Filling tap
For the other models, the only changes refer to the number of electric resistances; the 6 kW
version has only one 6 kW resistance (detail RC), the 18 kW version has three 6 kW resistances,
and the 24 kW version has four 6 kW resistances.

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CONNECTING SCHEME
PI
F
N
TA
SM
SE
PSA
cTS
1
2
3
1
4
5
6
7
8
9
10
11
51
51
50
49
48
47
46
45
44
43
42
41
40
38
37
36
55
56
54
J11
Interfaccia 961
RS485
Opentherm
JP7 JP8 JP9
JP10
0
1
39
1
2
3
1
2
3
4
5
6
7
J14
J12
J11
J5
J6
N
FT
G3
G2
G1
G4
brown
blue
brown
blue
Yellow/green
brown
blue
red
red
brown brown brown
blue
black
white
yellow
red
blue
brown
black
black
brown
blue
OUT
230V
brown
blue
PWM

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MAIN ELECTRIC SCHEME
Neutral N
Selected Phase from Contactor FT
Electronic Pump PI
Control of contact TS on Contactor of power (C-NO) cTS
Control gate triac n°1 (4KW power) G1
Control gate triac n°2 (2KW power) G2
Control gate triac n°3 (4KW power) G3
Control gate triac n°4 (2KW power) G4
Delivery heating probe (ntc sensor) SM
External probe (sensor) SE
Water pressure switch PSA
Safety thermostat TS
Room thermostat (terminal provided) TA
Single phase F
MAINELECTRICSCHEME
Legend electricscheme
F
N
GX
TS
ON/OFF
GX
Main P C B
LOVATO
BF09
Contatto
TS
FT
N
A2
LOVATO
BF09
A1
R
brown
blue
blue
blue
black
black
brown
brown
blue
blue
black
black
black
black
blue
230V-50Hz.
brown
brown
brown
General switch ON/OFF

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TRIAC – Connection scheme

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MANUFACTURE CONSTANTS
FUNCTIONValue
MAXTEMPERATUREPRIMARY80°C
TIME OF PUMP FUNCTIONING IN ANTI-LOCK 10 sec
INTERVENTION TIME ANTI-LOCK PUMP 24H
TEMPERATUREANTIFREEZEON(onlycirculator) 7°C
TEMPERATUREANTIFREEZEON(heatexchangerignition)4°C
TEMPERATUREANTIFREEZEOFF20°C
SETPOINT AND PARAMETERS
FUNCTIONDefaultRANGE
HEATINGSETPOINT 60°C 30 – 75 °C
FLOORHEATINGSETPOINT 30°C 10 –40°C
ROOMSETPOINT(withexternalprobepresent) 20°C 10–30°C
PARAMETERS
FUNCTIONN°DefaultRANGE
EXTERNAL PROBE START UP 1 0 0 – 1
BUILDINGCOEFFICIENTOFDISPERSION2355 –35°C
HEATING POST CIRCULATION
HEATING
EXCHANGERCIRCULATIONSTARTING 4 5 30 0
1 – 180 sec
0 – 240 sec
TEMPERATURES
FUNCTIONN°
DELIVERY TEMPERATURE t: “Ch”
EXTERNAL TEMPERATURE t: “Ep”
OFFSET SETPOINT OF EXTERNAL PROBE t: “Se”
SELECTION JUMPERS enable
Jumper0 / 1
JP7
JP8 High temperature / Low temperature plant Combi/ OnlyHeating
MIN. IGNITION TEMPERATURE CIRCULATOR 630 0–50°C
SPEED PUMP PWM OPERATION 10 4 1=400 l/h -2=800 l/h - 3=1000 l/h - 4=1200 l/h

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CONTROL OF MAIN HEAT EXCHANGER
According to the required power during the heat request, the controls G1-G4 related to the
main exchanger are turned on all or partially.
The actuation of each control is reduced to a lapse of 4 seconds. Higher is the required
power, more the control will remain operative in this lapse.
The power in heating or during a sanitary request is calculated by PID algorithm.
Please see in the pictures below two examples related to 40% and 60% of total power.
In case of simultaneous request of heating and tank, the controls G1-G4 related to the
main heat exchanger will be directed in the following way:
Boilerstatus
PrimaryG1÷G4
Only heating request G1 ÷G4 = modulation
Controls rotation:
Every hour the order of ignition of triac G1÷
G4 controls is rotated in such a way to
partition evenly in time the use of all heating elements.
G1
G2
G3
G4
4 s
G1
G2
G3
G4
4 s

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CONTROL OF EXERNAL PROBE
Installation and functioning at sliding temperature
For the connection of the external probe, it shall be used the
Original Kit FIAMMA code F.532 provided in the accessories of the
electric boilers Elektra.
The electrical connection shall be done in the external terminal at
the general electric panel already prearranged in the standard
cabling of the boiler. The connection must be carried out with
junction cables and wires having a minimum section of 1,5 mm and,
if possible, avoiding the insertion along with electric lines, digital
lines of inverter or other not compatible.
After the connection the external probe must be enabled by means of the introduction of a
variation ofN°1 parameter, changedfrom0to1.
Then the setpoint chased by the heating delivery probe will be calculated as follows:
Ti = [ (Troom – T e) * K e / 10 ] + Troom
Example of calculation for several values of Ke
The coefficientKeistheleakage ofthe building and itcanbe setbyN°2 parameter.
Te, is the temperature measured by the external probe.
Troom is the setpoint related to the desired room temperature.
20
30
40
50
60
70
80
-20-15-10-505101520
3,5 3,0 2,5 2,0 1,5
1,0
0,8
0,5
Te
Ti

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ANTIFREEZE FUNCTION
Incasethe deliveryprobe measuresatemperaturelowerthan 7°C,the circulatoris
activated.
If thetemperaturegoesdownthevalue of4°C the mainheatexchangerisigniteduntil the
deliverytemperaturehasreached20°C.The antifreezefunctionisactivealsowiththe
boilerturned OFF(function in standby mode but with bright switch on).
HEATING REQUEST
As the contact of room thermostat closes, if the mainboard is in winter mode, the system
pump is only activated if the temperature of the primary heat exchanger is higher than the
temperature set by parameter
N°6 .
If the value of temperature measured by the primary heat exchanger probe is lower than the
programmed delivery setpoint, the triac are ignited in sequence as per the required power.
This occurs only after a settable time by parameter
N°5 .
The instant power of the boiler and the related control of triac G1-G4 takes place by
means of PID regulator.
At the end of the request the pump remains supplied for a time equal to the value programmed
by
N°4 parameter.
MEANING OFTHEKEYS OFTEMPERATUREMENU
To log in temperature menu, press simultaneously J3 and J5 keys. The symbol F
F
F
Fwill
appear on the display.
KEY FUNCTION
J7 Exit by temperature menu
J2 Temperature index increase
J3 Temperature index decrease
MEANING OF KEYS OF PARAMETERS MENU
To log in parameters menu, press simultaneously the keys J2 and J6 for 4seconds.
The symbol F
F F
F will appear on the display.
KEY FUNCTION
J5 Parameter value decrease
J6 Parameter value increase
J7 Exit by parameters menu
J2 Parameter index increase
J3 Parameterindexdecrease

DEGASSING FUNCTION
The degassing function is activated by simultaneously pressing the keys J4 and J7.
During this function are altered states of operation to maximum and minimum speed of the
circulating pump PWM in order to facilitate the escape of air bubbles from the hydraulic circuit.
The sequence is illustrated below.
When this function is on the display shows a timer indicating the time at
Vel.MAX
(15 sec) Vel. MIN (20 sec) Vel. MIN (120 sec) Vel. MAX (5 sec) Vel. MIN (5 sec)
2cycles 60cycles
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SELECTIONVIEW
CONTROL MODE MODE UPM3 xx-50 UPM3 xx-70
2 m 3 m 4 m 5 m
4 m 5 m 6 m 7 m
PWM A PROFILE PWM A PROFILE PWM A PROFILE PWM A PROFILE
PERFORMANCE VIEW
OPERATION STATUS
ALARM STATUS
STANDBY * 0% ≤ P1 ≤ 25% 25% ≤ P1 ≤ 50% 50% ≤ P1 ≤ 75% 75% ≤ P1 ≤ 100% Blocked Supply voltage low Electrical error
*ONLY PWM CONTROLLED
> 10 s.
SETTING MENUPERFORMANCE
SELECTED SETTING
> 2 s.
X
10 s.
2 s.
> 10 s.
KEY LOCK
SETTING SELECTION SETTING SELECTION
25%
50%
75%
100%
INSTRUCTION GRUNDFOS PUMP
the end of the function.

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“Heating elements status”
The dashes located in the upper part indicate the heating elements status. Each dash
corresponds to a 2 kW element. The first 6 dashes refer to heating modules of primary
heat exchanger.
“Heating request”
When an heating request occurs, the temperature measured by the delivery probe is
displayed and the symbol I
II
Istarts to flash. On the small digit is displayed the tank
temperature. The instantaneous power of the boiler is indicated by the level of modulation.
In any moment it is possible to observe which triac are turned on.
“Temperature display”
On the small digit will appear the writing t : followed by the description of the selected
temperature, while the big digit will show the temperature value.
FUNCTION N°
DELIVERY TEMPERATURE t: “Ch”
EXTERNAL TEMPERATURE t: “Ep”
EXTERNAL PROBE OFFSET SETPOINT t: “Se”
G1
G2
G3
G4