Technibel Liberty300 Solar User manual

Made in
FRANCE
Référence 10.12.199 GB.02
Installation and Operating instructions
The information within this document is not contractual, we reserve the right to modify without warning the technical characteristics and the equipment of all appliances.
LIBERTY300
Domestic hot water heat pump

6800$5<
1 - RECOMMENDATIONS........................................................................5
Storage and transport ................................................................................................ 5
2 - INSTALLATION ..................................................................................7
2.1 Dimensions.............................................................................................................. 7
2.2 - Placement............................................................................................................. 7
2.2.1 - Air Intake................................................................................................................................................ 7
2.2.2 - Positioning.............................................................................................................................................. 7
2.3 - Installation with air duct ...................................................................................... 8
2.4 - Air duct sizing........................................................................................................ 8
2.5 - Plumbing connections ........................................................................................ 8
2.6 - Condensate line connections............................................................................... 10
2.7 - Electrical connections.............................................................................................. 10
2.7.1 - External control (optional)................................................................................................................. 10
2.7.2 - Change ventilation speed................................................................................................................. 11
3 - SETUP AND USE ...............................................................................11
3.1 - Control display ................................................................................................... 11
3.2 - Language setting................................................................................................ 12
3.3 - Program................................................................................................................ 12
3.4 - Time setting .......................................................................................................... 13
3.5 - Water temperature setting ................................................................................. 13
3.6 - Standby mode during vacation period........................................................... 13
3.7 - BOOST function (for better comfort) ................................................................. 14
3.8 - Heating mode (electric or heat pump)........................................................... 14
3.8 - INSTALLER menu ................................................................................................... 15
3.8.1 - Parameter settings ............................................................................................................................. 15
3.8.1.2 - -3(-! "3- Anti-legionellosis cycle .................................................................... 15
3.8.1.3 - C>KJLAB- Ventilation mode ............................................................................... 16
3.8.1.6 - 3°",(-(-Comfort function / Minimum temperature ........................................ 16
3.9.1.4 - 2'$##(-&-level of load shedding- .................................................................... 16
3.9.1.5 - , 7QFJB-maximum heating time-.................................................................. 17
3.9.2 - Locking................................................................................................................................................. 17
3.9.3 - Resetting parameter........................................................................................................................... 18
3.9.4 - Input reading....................................................................................................................................... 18
3.9.5 - Counters ............................................................................................................................................... 18
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4 - MAINTENANCE AND REPAIR ...........................................................19
4.1 - Water circuit / condensate draining ................................................................ 19
4.2 - Air intake circuit ................................................................................................... 19
4.3 - Anti-corrosion anode.......................................................................................... 19
4.4 - Troubleshooting................................................................................................... 20
4.5 - N.T.C. Sensors characteristics............................................................................. 20
4.6 - Error codes ........................................................................................................... 21
4.7 - Parts list ................................................................................................................. 22
5 - WARRANTY .....................................................................................24
5.1 - Warranty limits ..................................................................................................... 24
5.1.1 - General information .......................................................................................................................... 24
5.1.2 - Exclusion of warranty (non-limited) ................................................................................................. 24
5.1.2.1 - Use ........................................................................................................................................ 24
5.1.2.2 - Handling .............................................................................................................................. 25
5.1.2.3 - Placement ........................................................................................................................... 25
5.1.2.4 - Electrical connections ........................................................................................................ 25
5.1.2.5 - Hydraulic connections ....................................................................................................... 25
5.1.2.6 -Accessories ........................................................................................................................... 25
5.1.2.7 - Maintenance ....................................................................................................................... 25
6 - APPENDIX .......................................................................................26
6.1 - characteristics ..................................................................................................... 26
6.2 - Electrical schematic ........................................................................................... 27
6.3 - Cabling schematic ............................................................................................. 28
6.4 - Performance curves ........................................................................................... 30
6.4.1 - C.O.P. Evolution ................................................................................................................................... 30
6.4.2 - Heating time ....................................................................................................................................... 30
6.5 - Maintenance log ................................................................................................ 31
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F G H I J K L L K J M N H O K H P K L Q R O S T U G V W R U X Y U S Z W S Y U [ \ O [ F

• This appliance is not appropried for people (including children) with lake of physical and mental
capacity, or people without knowhow.
•The D.W.H.P (Domestic Water Heat Pump), Solar and Heat Pump is only used to heat tap water for
domestic use within the mentioned temperature limits.
The heating of liquids other than drinking water is not permitted. The technical rules related to drinking
water are to be respected.
• The temperature of the air taken in by the device must be between -7°C and +35°C. When the
temperature is less than -7°C or higher than +35°C, the water is no longer heated by the heat pump
but by the electrical backup. The functional benefits of diminish with proportion to the lowering of the
temperature of the air taken in by the device.
- The cover of this device must never be used for carrying or handling and is
not designed for this purpose.
- Rinse piping before connecting the device to the domestic hydraulic system.
- This device only functions when filled with water. Never activate the device unless the
tank is completely full and properly primed.
- The magnesiumanti-corrosion anode guaranties the protection of the tank. An
annual inspection of the anode must be carried out. The anode must be replaced, if
necessary, to maintain the anti-corrosion protection of the tank. (see § «Anti-corrosion
anode»)
- It is recommended to carry out an occasional inspection for scaling followed by a
cleaning if necessary using the access flange designed for this purpose.
- Always turn the device off before opening it. Take into account the fact that the fan
could continue rotating due to inertia.
- Avoid getting water on the control panel. Before cleaning, turn the device off.
1 - RECOMMENDATIONS
Storage and transport
Keep the transport bag out
of the reach of children
(suffocation risk)
Summary of PERMITTED transport positions
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2 - INSTALLATION
2.1 Dimensions
2.2 - Placement
2.2.1 - Air Intake
2.2.2 - Positioning
To be considered when choosing the final placement:
• ':+3 must not be installed outdoor
• ':+3 must be installed in a room outdoor from frost. Also, the temperature of the air taken in must
range between -5°C and 35°C. When the temperature is below -5°C or above 35°C, the water is no
longer heated by the heat pump, but by the electrical backup.
• inlate air must be clear of any pollution, and dust.
• The air taken in must not originate from a heated room.
• The device must not be placed in a room which risks explosion due to gases, vapours or dust and
must not intake air from rooms with the same risks.
• The floor must be able to support the weight of the device (weight of D.W.H.P when full = approx.440kg)
• Position ':+3 and adjust the stands in such a way that it is level. A slight inclination to the right of
the device (1° max.) is acceptable.
Installation in a room
smaller than 20m² requires
ducts to take air in and to
blown air out
View from above
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In case air ducting, the speed fan must be changed (see § «Change of
fan speed»
Outdoor air Heated or
unheatedroom
0,5m mini
2m mini
2.3 - Installation with air duct
2.4 - Air duct sizing
The connection of ':+3 must be done using insulated air ducts of a nominal diameter of 160mm.The piping
can be connected either on the intake side, the blowing side or both.
Maximumlength
of ducts + elbow (1m) =
Flexible duct : 10m
Rigid duct : 20m
Example :
(1) : Elbow 70°C – ø160 (Réf. 710133)
(2) : Insulated flexible hose
ø160 1g 10m
(Réf. 710137)
Silent flexible hose
with ø160 sleeve Ø160
(Réf. 710136)
(1)
(2)
2.5 - Plumbing connections
• It is mandatory to install a QHZ pressure-relief valve (not included) set to 7 bars on the domestic cold water
supply of the device. Membrane type valve are recommended.
This pressure-relief valve must conform to the domestic standard.
• The pressure-relief valve must be installed as close as possible to the cold water inlet of the device and WKH
SDVVDJHRIZDWHUPXVWQHYHUEHKLQGHUHG by any accessory (valve, pressure controller, etc...)
• The drain outlet of the pressure-relief valve must be sized following the requirements of construction
standard and must never be blocked. It must be connected by use of a funnel, allowing a minimum
20mm open space, to a vertical draining pipe of a diameter equal to the piping connection of the device.
• The drain outlet of the pressure-relief valve must be installed in a frost-free place and pointing downward.
• If the pressure of the domestic cold water supply is higher than 5 bars, install a pressure reducer above the
pressure-relief valve at the beginning of the installation (a pressure of 4 to 5 bars is recommended).
• It is advised to install a shut-off valve above the pressure-relief valve.
• In cases of installations equipped with
- piping of a small diameter
- ceramic plate valves
it is necessary to install, as close as possible to the shut-off valves, a domestic expansion vessel adapted to
the installation.
• For the domestic hot water circuit, use the following materials:
- copper
- galvanised steel
- brass
Depending on materials used in the hot water circuit, incompatibilities could result in damage due
to corrosion.
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In consequence, the connection of the device to the copper piping of the domestic hot water should
ALWAYS be carried out via a cast iron fitting, or steel, or with the help of dielectric connections (not
included) which will help to avoid any iron/copper galvanic bridge.
• Rinse the supply line piping before attaching it to the domestic installation of the device in order to avoid
the introduction of any particles, metallic or other.
• Respect the current standard in the country of use, notably those that concern domestic and pressure safety
conditions.
• The maximum temperature of the domestic hot water at delivering points should never surpass 50°C for the
toilet and 60°C for other uses. Install thermostatic mixing valves adequate enough to avoid any burn risks.
• In regions where the water contains high levels of limestone (TH > 20°F), it is recommended to treat water
with a softener. Softened water should conform to the criteria defined by the country’s norms.
• In all cases, softened or not, the latter should conform to the country’s hot water additional clause norms
concerning:
- chloride levels
- resistivity (between 2200 and 4500 ohm/cm)
- 12°F < TH < 30°F
- …
The warranty does not apply if these points are neglected or if the water
quality did not allow the correct treatment in the legal framework.
N.B. :
• Domestic hot water cycling loop: in order to save energy, it is recommended not to use domestic
hot water recycling.When a recycling line is attached to the hot water distribution systen, foresee
the possibility of a shut-off mechanism (valve or faucet) in order to limit useless energy loss. The
connection of the recycling line is carried out in funtion of need (with a timing command).
1. Shut of valve
2. Pressure reducer
3. One way valve
4. Insulating dielectric sleeve
5. Membrane pressure-relief valve
6. Domestic hot water recycling pump
7. Run-off siphon
8. Domestic expansion vessel
9. Thermostatic mixing valve
10. Drain valve
Strickly avoid recycling.
Otherwise, insulate ducts and
use a programmer to limit
energy consumptions.
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The device is polarised, respect the
polarity:
• Brown wire = 230V phase
• Blue wire = Neutral
• Green/Yellow wire = Ground
Grounding is mandatory
2.6 - Condensate line connections
• the condensate tube must run-off into open air before entering the siphon,
• do not attach it to a boot,
• no not bend he tube,
• keep the tube vertical and open toward the bottom.
The electrical supply must conform the current rules of the
country of installation.
Protect the device with:
• A 16A all-pole circuit-breaker with a minimum 3mm
contact opening
• A 16A circuit-breaker with a 30mA differential
When supply cable is damaged, it must be replaced by
the manufacturer, his aftersale service, or some qualified
people to prevent any danger.
2.7 - Electrical connections
To access the electrical connections,
remove the cover and the shell.
,03257$ 7The upper cover and the
shell. form a set that must never be
split.
• Remove the cover of the device
by removing the screws (a) of the
shell. by the lower belt.
• Remove the black cover of the
electric box
2.7.1 - External control (optional)
To forbid operation of electric back up during peak time, an external control can be connected.
• switch open = electric backup off
• switch closed = electric backup autorized
Do not connect voltage supply to the swith entry (entry 3) : risk of destroying the PCB
The switch (entry 3) does not control the heat pump operation, but only the electric backup
Peak time / off peak time operation
• Pass a 0.75 mm² 2 wire cable with metal tips through an
available cable gland at the back of the device and
bring the extremity of the cable to the electronic card.
The other end of the cable is to be connected to the
electrical service provider’s contact.
• Remove the black protection cover of the electronic
card.
• Insert the 2 wire cable via a grommet of the electronic
card.
• Attach the 2 wire cable on the entry of the electronic
card marked “Entrée 3” after having removed the
existing red bridge.
existing
red
bridge.
N.B. :
':+3 can also operate using an internal
timing program (see section “Time
programming”).
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When the heat pump is ducted with a total length higher than 5m, air pressure drop increase and fan
speed must be changed in other to
get the right air flow rate.
This speed change can be
done from the electric box of
the appliance, at the installation
step. Access to electric box (see
§ «External control» procedure)
and change the position of grey/
blue wire of the fan plugged on
the 4μF capacitor. This grey/blue
wire must be plugged on the same
connection as the neutral wire from
the electric board, as described on
side pictures.
2.7.2 - Change ventilation speed
Ventilation controled
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3 - SETUP AND USE
Ensure the sealing and tightness of the entire circuit.':+3 functions with the heat pump as long as the
temperature of the air taken in remains with the range of -7°C to +35°C. Outside of this range, the electrical
backup ensures the heating of domestic hot water.
The temperature of domestic hot water supplied by the heat pump is adjustable to 60°C. In function of the
volume of consumed water and to ensure savings, it is recommended to limit the temperature of domestic
hot water to a lower temperature.
In case of high domestic hot water consumption, ':+3 possesses a comfort function that increases the
heating capacity when there remains only 1/3 of the volume of the tank above 38°C (see section “PAR.10
– Minimum temperature”°.
In instances where there is a need for high amounts of domestic hot water, ':+3 possesses a “boost”
function (activated by the user) which ensures the quick heating of water to the desired temperature (50°C
for example) with the help of the heat pump and the electrical backup. This function is deactivated as
soon as the desired temperature is achieved (e.g. 50°C).
Periodically verify for alarms (in case of alarm, see section “Error message”).
3.1 - Control display
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.........Compressor activated
......Ventilation activated
...........Defrosting
...........Electrical backup activated
........Need for domestic hot water
..........Econo-mode activated
(by time programming or external
activation)
..........Vacation mode activated
Menu button
Start/ Stop
Clock settings
DialScreen
Fig. 4-1
before after
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3.2 - Language setting
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• Direct access by pressing the Menu button.
• Turn the dial to scroll through the menu choices:
• Press «Menu» to escape
choice of
language
enter
3.3 - Program
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,.-# 8
To program autorization hours for heat pump,press the Clock button and keep press during 3 seconds.
choose the day
-====
  E
set the end hour of
period 1
-
'-&
set confort mode
(COMF) or Standby
mode (HG)
for period 1
 -====
 E
set the end hour of
period 2
 -
".,%
set confort mode
(COMF) or Standby
mode (HG)
for period 2
repeat up to 7 periods per
day
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copy of
program the
day before
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copy of
program
,.#(%/1&
modification
of program
2$$/1.&
to see a
program
Time for heating up of the tank
depends on outside temperatures.
Be carreful not to limit too much
operation of the appliance
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• Direct access by pressing v&ORFNVHWWLQJVw
3.4 - Time setting
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-- 

Day setting
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
Month setting
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
yearsetting
,.-# 8
--
hoursetting
,.-# 8
:--
Min.setting
3.5 - Water temperature setting
Water temperature can be set from 30 to 65°C. Up to 60°C, water is heated by the heat pump only. Above
and up to 65°C, the electric heater is activated.
• Direct access by pressing vPHQXw
• Turn the dial to scroll through the menu choices:
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temperature
setting
• Press the Menu button to return to the main screen
%
In order to get the most out of the heat pump, it is recommended to not set the
temperature too high if there is no need to do so.
The “VACATIONS” function allows to set the device in stand by mode while conserving the frost-free
function.
This function is programmable for a duration of 1 to 99 days. It is activated once the number of days
are set and accepted.
• Direct access by pressing vPHQXw
• Turn the dial to scroll through the menu choices:
3.6 - Standby mode during vacation period
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number of day in
standby mode
• Press the Menu button to return to the main screen
The “VACATIONS” function ends automatically at the same time as soon as the number of days have
passed. During the entire duration of the vacation D.W.H.P will display “RETURN” (Return from vacation)
along with a countdown for the number of days.
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3.7 - BOOST function (for better comfort)
The “BOOST” function is a temporary forcing of the electrical backup and the heat pump,
simultaneously, to accelerate the raising of temperature on a heat cycle.
The spark “electrical backup” symbol blinks.
• Direct access by pressing the Menu button.
• Turn the dial to scroll through the menu choices:
%
The“BOOST” function is automatically deactivated as soon as the set temperature is achieved
• Press the Menu button to return to the main screen.
3.8- Heating mode (electric or heat pump)
Electric mode use only the electric boiler to heat the water in the tank. This is an alternative running
mode when the heat pump can not be used.
• Direct access by pressing the Menu button.
• Turn the dial to scroll through the menu choices:
• Press the Menu button to return to the main screen.
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To set the installation
parameters
Reset to nominal settings To see temperatures of
different sensors
3.8.1 - Parameter settings
According to the installation configurations, it is necessary to adjust some parameter to optimise the
functioning of ':+3.
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• Press the Menu button
• Turn the dial until the screen displays “INSTALLER”
• Press VLPXOWDQHRXVO\ the “Clock settings” button and the Menu button
• .HHS WKHP VLPXOWDQHRXVO\ SUHVVHG GRZQ IRU 3 seconds until the screen displays “SETTING”
(Parameter settings).
3.8- INSTALLER menu
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Tosee state ofthe different
counters
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choose the parameter Modify value Enter
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select the day Enter
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3.8.1.2 - -3(-! "3- Anti-legionellosis cycle
Parameter -3(g! "3allows the set the interval between two anti-legionellosis cycles.
-3(g! "3 = 0 No anti-legionellosis cycle, except when returning from vacations period and after
standby mode of more than 3 days.
-3(g! "3 = 8Anti-legionellosis cycle is launched every 8days (for example) and starts at 22:00
During the anti-legionellosis cycle the temperature of the water is raised to 60°C by the heat pump.
If the default for domestic hot water is already set to 60°C (see section “Desired water temperature
settings”) there will be no anti-legionellosis cycle since it is already permanent.

C D E F G H I I H G J K E L H E M H I N O L P Q R D S T O R U V R P W T P V R X Y L X C

3.8.1.3 - C>KJLAB- Ventilation mode
Parameter 5 is the setting of the ventilation mode
% -,.#$ = ventilation is activated only when heat pump runs (Initial setting)
% -,.#$ = ventilation is permanently activated
% -,.#$ = ventilation is activated when heat pump runs and when the external control switch is on
The external contact (humidstat) has to be connected the electric box on the input «hygrostat» (see
electric scheme in annex).
It is possible to authorise the operation of the electrical backup at the same time at the heat pump to
make sure the water temperature does not drop below a minimal comfort level of 38°C. The electrical
backup will activate in order to raise the water temperature to 43°C and will stop and the heat pump
3.8.1.6 - 3°",(-(-Comfort function / Minimum temperature
%
The “Comfort” function is only active during the range of authorised hours
C>KJLAB C>KJLAB

select the mode Enter
enter
example
select mode
3°",(-(
-.

3°",(-(
8$2
When input contact is open, load shedding is actived. The level is choosen by the operator :
3.9.1.4 - 2'$##(-&-level of load shedding-
Enter
H[DPSOH
Select mode
2'$##(-&


2'$##(-&

= Heat pump OFF, electric heater OFF
= Heat pump ON, electric heater OFF
= Heat pump ON, electric heater ON
(
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• Press the Menu button to return to the main screen.
• Press the Menu button to return to the main screen.

Z [ \ ] ^ _ ` ` _ ^ a b \ c _ \ d _ ` e f c g h i [ j k f i l m i g n k g m i o p c o Z

When the heating time is long with the heat pump, the electric back-up can work in paralel in other to
increase the heating capacity. , 73(,$ parameter activates the back-up when the water temperature
has not reached the set point after x-hours (x is the variable parameter to set).
3.9.1.5 - , 7QFJB-maximum heating time-
enter
H[DPSOH
Choose between
1 and 24h
J>U3(,$
KL

J>U3(,$
'
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-. = Locking is not active.
43. = Access to menu is locked.
Temporary (60 sec) unlocking is performed by pressing 3 sec. on button.
2 levels of locking can be applied to limited the access to menus.
In «INSTALLER» turn dial up to «+L@HFKD»
Automatic and permanent locking
3.9.2 - Locking
enter
H[DPSOH
Select
8$2 or KL
+L@HFKD
VBP

enter
Press
3 sec
4KIL@HFKD
-.
Select 8$2
 "

enter
H[DPSOH
+."*(-& +."*(-&
-.
Select level of locking
Unlocking : press the button for 3 sec.
Nota
When locking is actived, only access to unlocking and alarm reset is possible.
Press
3 sec
enter
4-+."*(-&
-.
4-+."*(-&
8$2
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
Press
3 sec
Press
3 sec
• Press the Menu button to return to the main screen.
MOL = To access to menu is locked.
Temporary (300 sec) unlocking is performed by pression 3 sec. on button and 3 sec.
on simultaneously
and
Manual locking
Direct access to locking is possible from the main screen.


                                         


Counters menu gives access to the number of start of the heat pump and the electric back-up.
In «Installer» menu, turn dial to «"LRK BOP»
3.9.5 - Counters
- ".4-3$1-° : Number of heat pump starts
- ".4-3$1-° : Number of electric back-up starts
".4-3$12
Resetting parameter permit to go back to initial setting (manufacturer setting).
In «Installer» menu, turn the dial up to «1$2$3»
3.9.3 - Resetting parameter
enter
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Input reading gives real times values off every temperature sensors and input contact position.
3.9.4 - Input reading
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Nota
Temperature permanently displayed on the screen is the setting temperature.

                                           

To maintain performance, it is recommended to have the device inspected by a qualified person HYHU\
WZR\HDUV
• All intervention on the refrigerating circuit must be done by a qualified
person with a category 1 certificate of aptitude.
• The release of the refrigerant into the atmosphere is not permitted,
the refrigerant recovery must be done before any intervention on the
refrigeration circuit.
• Turn D.W.H.P off before opening it.
• Wait for the complete stop of the ventilator before any intervention.
•Make the anode inspection every year
• Do not spring water on electical parts
4 - MAINTENANCE AND REPAIR
4.1 - Water circuit / condensate draining
The inspection of the water circuit is limited to the inspection of the filters and of eventual leaks. Clean
or replace the dirty filters.
Check that the condensate draining is operating correctly:
- Remove the upper cover (see section “Peak time / off-peak time functioning”).
- Verify that the evacuation orifice is not blocked.
- Clean the condensate recovery container where deposits brought in by the air can accumulate.
- Clean the condensate tube.
%
During maintenance or the shutting down of ':+3, follow the environmental protection
rules with respect to recovery, recycling and disposal of consumable parts and components.
The pressure limiter has to be checked and cleaned, régularly to prevent any disfunctionning.
Check the leak tighteness on every fitting, flange and hydraulic connections.
4.3 - Anti-corrosion anode
The anti-corrosion anode is installed in the hot water tank and must be regularly electrically tested as well
as a minimum of every years after the activation of ':+3. Replace it if necessary.
- Drain water out of the tank
- Unscrew the anode from the tank
- Check the anode diameter at the thinest point : diameter must be higher than 15mm
- Change the anode if its diameter is less than 15mm (the initial diameter being 33mm)
An anti-corrosion anode in bad working condition shortens the length of
operation of the device and nullifies the warranty.
4.2 - Air intake circuit
Maintenance work is limited to the cleaning of the evaporator (at least once a year according to the
cleanliness of the air taken in). If the filters are used, check regularly that they are not dirty. Clean them if
necessary.
%
Sharp edged fins : wound risk. Be careful not to deform or damage the fins.

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4.4 - Troubleshooting
x7KHKHDWSXPSGRHVQRWZRUN
Verify that :
• Temperature setting is higher than the water temperature in the tank.
• The device has the proper power supply and that the polarity is respected:
Phase on brown wire
Neutral on blue wire
Ground on green / yellow wire
• The light is on.
• The device is not in vacation mode ( symbol)
• The temperature of the air taken in is lower than -5°C or higher than +35°C.
• An external manipulation or a programmed hourly range is not preventing the operation ( symbol,
“econo-mode” lit).
• An error is displayed on the screen (see section on error codes).
x/DFNRI+RWZDWHU
Verify that:
• Water consumption is higher than the tank capacity.
• The authorized operating range is not too short (12 hours minimum if connected with duct).
• The programmed water temperature is not too low.
x&RQGHQVDWHVGRQRUXQRIISUHVHQFHRIZDWHUXQGHUWKHGHYLFH
Verify that:
• The condensate evacuation system is not dirty of blocked. Clean if necessary:
Remove the cover (see section “Peak time / off-peak time functioning”).
Check for blockage.
• The tube is not bent or not moking a loop straight down.
• The tube gives off into open space.
x7KHHOHFWULFDOEDFNXSGRHVQRWZRUN
Verify that:
• An external manipulation or an hourly programming is not preventing the operation ( symbol,
“econo-mode” lit).
• The security limiter thermostat of the electrical backup has not been set off following an overheating
(>85°C). In this case, rearm it (see section “Security devices”).
• Before rearming : verify that :
- heating element is free of limestone
4.5 - N.T.C. Sensors characteristics
0
5
10
15
20
25
30
35
40
45
50
55
60
-10-5 0 5 10152025303540
Température (°C)
Résistance
(kOhms)
the 4 temperature
sensors have the
same curve of
ohmic values.
Rearming
button
(88°C) of the
security limiter
thermostat

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