Fiamma Combi series User manual

USE AND MAINTENANCE MANUAL
ELECTRICCOMBIWALL BOILER
FORHEATINGAND SANITARYHOTWATERPRODUCTION
INSTANTANEOUS
Combi.Elektra. .. CHE series
EQUIPMENTCOMPLIANTCEDIRECTIVE 2006/42 -IEC60335-2-21:2012withIEC60335-
1:2010 withEN
60335-2-21:2003+A1:2005+A2:2008-EN60335-1:2012 -EN62233:2008.
®

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ELECTRIC WALL BOILER
Series ELEKTRA. …CHE
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 or the need of
sanitary water. The system D.E.S. manages the device with temperature probes
positioned in each sensitive point of the boiler, so as to manage both comfort and
economy functioning, 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) and
in the domestic hot water temperature.
- 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
H
L
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Dimensions
The seriesElektra... Chasfourpowerlevels,butthe sameoverall
dimensions:
Elektra.12 C HE 12kWmaximum electricaloutput
Elektra.18 C HE 18kWmaximum electricaloutput
Elektra.24 C HE 24kWmaximum electricaloutput
Appliance dimension Packaging dimension
L(Width): 400 mmWidth:440mm
H(Height):875 mmHeight :940 mm
P(Depth):300 mmDepth: 390 mm
Weight :41 kgWeight :44kg

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AF
VSR
AC
M
R
Electrical
supply
95
220
165
40
95
80
120
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Hydraulic connections – Dimensional of connection arrangement.
Hydraulic connections
MHeating delivery : ¾” M
RHeating return : ¾” M
AF Cold sanitary water inlet : ½” M
AC Hot sanitary water output: ½” M
VSR Heating safety valve (3 bar) : ½” F
RC Manual Filling tap (restoring water pressure)
Bottom view (under the boiler)
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87

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Maintechnical features
Elektra.12 C HE 12 kWmaximumelectricaloutput
Single-phaseelectricalsupply230 V-50Hz.
Weight : 41,5 kg.
Electrical / heat power available at heating: 12 kW obtained by n°.2 resistance
group (n°.2 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.
Maximum sanitary operating pressure: 5.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Minimum operating pressure in the sanitary, comfort system: 0.25 bar.
Minimum operating pressure in the sanitary, economy system: 0.05 bar.
Maximum limit of thermal safety heating circuit - boiler body: 100 °C.
Elektra.18C HE 18kWmaximumelectricaloutput
Single-phaseelectricalsupply230 V-50Hz.
Weight : 42,5 kg.
Electrical / heat power available at heating: 18 kW obtained by n°.3 resistance
groups (n°.3 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.
Maximum sanitary operating pressure: 5.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Minimum operating pressure in the sanitary, comfort system: 0.25 bar.
Minimum operating pressure in the sanitary, economy system: 0.05 bar.
Maximum limit of thermal safety heating circuit - boiler body: 100 °C.
Elektra.24 C HE 24 kWmaximumelectricaloutput
Single-phaseelectricalsupply230 V-50Hz.
Weight : 43,5 kg.
Electrical / heat power available at heating: 24 kW obtained by n°.4 resistance
groups (n°.4 3x2 kW).
Maximum head available at the pump 6 m H2O
Expansion vessel capacity of 10 lt.
Safety valve of heating circuit: 3 bar.
Maximum heating operating pressure: 2.5 bar.
Maximum sanitary operating pressure: 5.5 bar.
Minimum operating pressure in the heating circuit: 0.6 bar.
Minimum operating pressure in the sanitary, comfort system: 0.25 bar.
Minimum operating pressure in the sanitary, economy system: 0.05 bar.
Maximum limit of thermal safety heating circuit - boiler body: 100 °C.

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Display
I
drometro
General
switch
hydrometer
I
drometro
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).
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.

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J7
J6
J5
J4
J3
J2
KEYBOARD PANEL (Control panel)
MEANING OF THE KEYS IN USER MODE
KEY FUNCTION
J5 Display/ Sanitary setpoint decrease(only if JP8 = 0)
J6 Display/ Sanitary setpoint increase(only if JP8 = 0)
J7 ON-OFF Switching
Displaytemperatureoutput/ Displaysetpointoutput
Unlock errorofsafetythermostat
J4 Summer–Winterswitching
J2 Display/ Increaseofheating setpoint(orroomtemperature)
J3 Display/ Decreaseof heating setpoint(orroomtemperature)
J5 +J6 Enabling function Eco/Comfort(only if JP8 = 0)
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.
J4+J7Start function degassing

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CHOICE OF THE OPERATION MODE (winter/summer)
Pressing the key MODE (J4), it will be chosen the mode of operation, wintry or
summery.
Pressing repeatedly each time for at least 5 seconds, you switch from WINTER
to SUMMER or from SUMMER to WINTER then.
When the device will be in WINTER mode, on the display will appear the
symbol C
C
C
C(snow).
When the device will be in SUMMER mode, on the display will appear the
symbol B
B
B
B(sun).
TEMPERATURE VARIATION OF THE HEATING CIRCUIT
When the apparatus has been set with the snow symbol (C
C
C
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.
TEMPERATURE VARIATION OF HOT SANITARY WATER
The temperature of hot sanitary water can be varied independently from the
mode of functioning, both wintry and summery.
The two keys with the Tap symbol on the left of the control panel,are used to
set the maximum temperature of the hot sanitary water circuit.
The keywiththe tap
H+
(J6)increasesthe temperature,and the one with
the tap
H-
(J5)decreasesthe temperature.
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

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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:
SYMBOL MEANING
L
LL
LMalfunction
J
JJ
JRequest of burner switch-on
I
II
IHeating request
HHHHSanitary request
G
GG
G Function sanitary Comfort activated
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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INSTALLATION
TECHNICAL NOTE FOR INSTALLER AND TECHNICAL MAINTENANCE
HYDRAULIC SCHEME
(Elektra12C015HE version)
Legend
-TSSafetythermostat.-rsDrainvalve.
-VSRSafetyvalveheating circuit 1/2”x3bar.-PAWaterpressureswitch.
-SPBrazed heat exchangers.-CCBoilerbody.
-RHydraulic connection in-let heating circuit. -VDPPressostaticDivertervalve.
-AC Hydraulic connection out-let sanitary hot-water. -RCBoilerresistanceof6kW.
-M Hydraulic connection out-let heating circuit. -rscDrainvalveof boilerbody.
-VE Expansion vessel heating circuit.
-AF Hydraulic connection in-let sanitary cold-water.
Forthe othermodels,the onlychangesrefertothenumberofelectricresistances;the 12 kW
version hastwo 6kWresistance(detail RC),the 18 kWversionhasthree6kWresistances,
and the 24 kW version has four 6 kW resistances.

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SinglephaseF
NeutralN
Selected Phasefrom ContactorFT
ElectricPump PI
Controlof contactTSon Contactorof power(C-NO)cTS
SanitaryMicroswitch (controlComfortfunction)MS
Controlgatetriacn°1 (4KWpower) G1
Controlgatetriacn°2 (2KWpower) G2
Controlgate triacn°3 (4KWpower) G3
Controlgatetriacn°4 (2KWpower) G4
Deliveryheating probe (ntcsensor) SM
Externalprobe (sensor) SE
Waterpressure switch PSA
Safetythermostat TS
Roomthermostat(terminalprovided)TA
Sanitary probe (sensor) SS
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
Ground point of this affordabke security application PE
Functional heart derived from ground point of security F.E.
Connection with remote control OpenTherm (optional) OT
General switch ON/OFF

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TRIAC – Connection scheme

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MANUFACTURE CONSTANTS
FUNCTIONValue
DELTAOFF TANKPROBE 0°C
DELTAONTANKPROBE-1 °C
MAXTEMPERATUREPRIMARY80 °C
TIME OF PUMP FUNCTIONING IN ANTI-LOCK 10 sec
INTERVENTIONTIMEANTI-LOCKPUMP24 H
TEMPERATUREANTIFREEZEON(onlycirculator) 7°C
TEMPERATUREANTIFREEZEON(heatexchangerignition)4°C
TEMPERATUREANTIFREEZEOFF 20 °C
SETPOINT AND PARAMETERS
FUNCTIONDefaultRANGE
HEATINGSETPOINT 60 °C 30 –75 °C
FLOORHEATINGSETPOINT 30 °C 10 –40 °C
ROOMSETPOINT(withexternalprobepresent) 20 °C 10–30 °C
SANITARY SETPOINTINSTANTANEOUS 50 °C 30 –60°C
PARAMETERS
FUNCTIONN°def. RANGE
EXTERNALPROBESTARTUP10 0–1
BUILDINGCOEFFICIENTOFDISPERSION235 5–35°C
SANITARYPOSTCIRCULATION315 1–180 sec
HEATINGPOSTCIRCULATION430 1–180 sec
HEATING EXCHANGER CIRCULATION STARTING 50 0 –240sec
TEMPERATURES
FUNCTIONN°
DELIVERY TEMPERATURE t: “Ch”
SANITARY TEMPERATUREt: “Dh”
EXTERNAL TEMPERATURE t: “Ep”
OFFSET SETPOINT OF EXTERNAL PROBE t: “Se”
SELECTIONJUMPERSenable
Jumper0/ 1
JP7Hightemperature/ Lowtemperatureplant
MIN. IGNITION TEMPERATURE CIRCULATOR 630 0–50°C
DELIVERYDIFFERENTIALOFSANITARY 715 0–20°C
JP8
JP9Combi / Only Heating (“
N ” version)
Tank with sanitary / Sanitary instantaneous
TYPE KETTLE PRESENT 8 0 0=int.withprobe-1=ext.withthermostat-2=ext.withprobe
TYPE OF SENSOR REQUIRED SANITARY 90 0=flowswitch+three-waypneumatic-1=flowmeter+three-wayelectric
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.
Pleasesee inthepicturesbelowtwoexamplesrelatedto40%and60% oftotalpower(12kW).
In case of simultaneous request of heating and sanitary, the controls G1-G4 related to the
main heat exchanger will be directed in the following way:
Boilerstatus
PrimaryG1-G4
Onlysanitary requestG1–G4=
modulation
Heatingrequest +Flow switch requestG1–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 of N°1 parameter, changed from 0 to 1.
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 coefficient Ke is the leakage of the building and it can be set by N°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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ANTIFREEZEFUNCTION
In case the delivery probe measures a temperature lower than 7°C, the circulator is
activated.
If the temperature goes down the value of 4°C the main heat exchanger is ignited until the
delivery temperature has reached 20°C. The antifreeze function is active also with the boiler
turned OFF (function in standby mode but with bright switch on).
DHW DEMAND INSTANTANEOUS
When receiving a request by the microswitch sanitary, the circulator is powered and controlled
commands are G1, G2, G3, G4 relative to the primary heat exchanger leading the delivery
temperature to the setpoint value sanitary + a differential be set with parameter
N°7 .
FUNCTIONECONOMY/ COMFORTOFSANITARY
In ECO mode in standby condition is not activated any resistance of the primary heat exchanger.
When COMFORT mode is active in standby condition the primary heat exchanger temperature
is maintained in order to ensure a prompt response of the sanitary.
The primary heat exchanger is maintained at a temperature equal to the DHW set point plus
a differential temperature set by parameter
N°7 .
After the call for the pump it remains powered for a time equal to the value set by
parameter N°3 .
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 the end of the function.
Vel.MAX
(15 sec) Vel. MIN (20 sec) Vel. MIN (120 sec) Vel. MAX (5 sec) Vel. MIN (5 sec)
2cycles 60cycles

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

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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.
MEANING OF THE KEYS OF TEMPERATURE MENU
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 Parameter index decrease

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“Heating elementsstatus”
The dasheslocatedintheupperpartindicatethe heating elementsstatus.Eachdash
correspondstoa2kWelement. The first6dashesrefertoheating modulesofprimary
heatexchanger.
G1
G2
G3
G4
“Heating request”
Whenan heatingrequestoccurs,thetemperaturemeasuredbythedeliveryprobeis
displayed and the symbolIIIIstartstoflash.On the small digit is displayed the sanitary
temperature.Theinstantaneouspoweroftheboilerisindicatedbythe levelofmodulation.
Inanymoment it ispossibletoobservewhichtriacareturned on.
“Microswitchrequest"ECO mode (only if JP8 = 0)
Whenamicroswitchrequestoccurs,the temperaturemeasured bythe deliveryprobeis
displayedandthe symbolHHHHstartstoflash.On the small digit is displayed the sanitary
temperature.Theinstantaneouspoweroftheboilerisindicatedbythe levelofmodulation.
In any moment it is possible to observe which triac are turned on.
GGGG
When there is a request by the micro sanitary in COMFORT mode in addition to the above,
the symbol of the shower appears on the display.