– After having removed the packaging make sure that
the product supplied is integral and complete in all
its parts. If this is not the case, please contact the
Dealer who sold the appliance.
– The appliance must be used as intended by
KOVARSON
caused to persons, animals or things, improper
installation, adjustment, maintenance and improper
use of the appliance.
– In the event of water leaks, disconnect the appliance
from the mains power supply, close the water
mains and promptly inform professionally qualified
personnel.
– Periodically check that the operating pressure of
the water heating system when cold is
this is not the case, increase the pressure or contact
professionally qualified personnel.
– If the appliance is not used for a long period of time,
at least one of the following operations must be
carried out:
set the main system switch to "OFF";
-
-
close the gas and water valves for the water
heating system.
– In order to ensure optimal appliance operations
KOVARSON
checks are carried out
who is not responsible for any damage
1-1.2 bar
recommends that maintenance and
ONCE A YEAR
.
. If
d
IT IS FORBIDDEN
– The appliance is not to be used by children or
unassisted disabled persons.
– Do not use electrical devices or appliances such as
switches, electrical appliances etc if you can smell
fuel. If this should happen:
open the doors and windows to air the room;
-
-
close the gas isolation device;
-
promptly call for professional assistance.
– Do not touch the appliance with bare feet or with any
wet part of the body.
– Do not carry out any technical intervention or
cleaning operation before having disconnected the
appliance from the mains power by setting the main
switch to "OFF", and closing the gas supply.
– Do not modify the safety or adjustment devices
without authorization and instructions from the
manufacturer.
– Do not block the condensate drain (if present).
– Do not pull, detach or twist the electrical cables
coming out of the appliance even if the appliance is
disconnected from the mains power supply.
– Do not expose the boiler to atmospheric agents.
These boilers can also be installed in partially
covered areas, as per EN 15502, with a maximum
ambient temperature of 60°C and a minimum
ambient temperature of - 5°C. It is recommended
that the boiler is installed below weathered roofs,
on the balcony or in a protected niche, to protect it
from exposure to weathering agents (rain, hail and
snow). The boiler is equipped as standard with an
antifreeze function.
– Do not block or reduce the size of the ventilation
openings of the room where the appliance is
installed, if present.
– Remove the mains power and gas supply from the
appliance if the external temperature could fall
below ZERO (risk of freezing).
– Do not leave containers with flammable substances
in the room where the appliance is installed.
– Do not leave packaging material around since it
could be dangerous. Therefore dispose of it as
prescribed by legislation in force.
m
2
WARNINGS
–
It is recommended that all operators
carefully in order to use the appliance in a safe and
rational manner.
This manual
–
must therefore be kept for future reference and
must always accompany the appliance in the event
the appliance is transferred or sold to another
Owner or User or is installed on another system.
Installation and maintenance
–
must be carried out by a qualified company or by
a professionally qualified technician in accordance
with the instructions contained in the manual. The
company or technician will, at the end of installation
operations, issue a statement of compliance
with national and local Technical Standards and
Legislation in force
boilers comply with:
– Directive 2009/142/EC - Gas Appliances
– Boiler Efficiency Directive 92/42/EEC
– Low Voltage Directive 2006/95/EC
– Electromagnetic Compatibility Directive 2004/108/EC
– Thermal Efficiency
– Classified as "Condensing"
– Class NOx 5 (< 70 mg/kWh)
Please refer to the technical data plate for the serial number
and year of manufacture.
EC DECLARATION OF CONFORMITY
In accordance with "Gas Appliances" Directive 2009/142/EC,
"Electromagnetic Compatibility" Directive 2004/108/EC, "Boiler
Efficiency" Directive 92/42/EC and "Low Voltage" Directive
2006/95/EC, the manufacturer KOVARSON s.r.o., via Garbo 27,
37045 Legnago (VR),
comply with the European Directives.
The Technical Manager
(Franco Macchi)
DECLARES THAT
the boiler models
ADAX
SYMBOLS
a
f
d
m
DANGER
To indicate actions which, if not carried out correctly,
can result in injury of a general nature or may damage
or cause the appliance to malfunction; these actions
therefore require particular caution and adequate
preparation.
DANGER
To indicate actions which, if not carried out correctly,
could lead to injury of an electrical nature; these
actions therefore require particular caution and
adequate preparation.
IT IS FORBIDDEN
To indicate actions which MUST NOT BE carried out.
CAUTION
To indicate particularly important and useful
information.
4.3.3 Checking the ignition/detection electrode . 28
4.3.4 Final operations ...................... 28
4.4.1 Checking the smoke duct............... 28
4.4.2 Checking the expansion vessel pressure .. 28
3
1 DESCRIPTION OF THE APPLIANCE
Cod. 6244745
1.1 Characteristics
ADAX
are last generation condensing wall mounted boilers
KOVARSON
which
water production. The main design choices made by
ADAX
for the
– the total pre-mix microflame burner combined with a steel
heat exchanger for heating and a rapid heat exchanger for
DHW
– the sealed combustion chamber which can be classified
"Type C" or "Type B" in relation to the room where the boiler
is installed, depending on the smoke outlet configuration
adopted during installation
– the command and control microprocessor electronic board
provides efficient management of both heating and hot water
production. It can also be connected to a remote control
with an Open Therm protocol or to room thermostat and/or
external sensor. If connected to an external sensor, the boiler
temperature varies on the basis of the external temperature
according to a selected optimal climatic curve providing
significant energy and economic savings.
Other special features of the
– the anti-freeze function which activates automatically if the
temperature of the water inside the boiler falls below the
threshold of the value set at parameter "PAR 10" and , if there
is an external sensor, if the external temperature falls below
the threshold of the value set at parameter "PAR 11"
– the anti-blocking function of the pump and diverter valve. This
activates automatically every 24 hours if no request for heat
has been made
– the chimney sweep function lasts 15 minutes and makes the
job of the qualified technician easier when measuring the
parameters and combustion efficiency
– domestic hot water comfort function which allows the time
necessary for the hot water to become available to be reduced
and ensures that the temperature is stable
– screen display of the operating and self-diagnostic
parameters with error code display when the fault occurs.
This makes repair interventions easier and allows appliance
operation to be restored correctly.
has produced for heating and domestic hot
boilers are:
ADAX
boilers are:
KOVARSON
1.3 Identification
The
ADAX
boilers can be identified by means of:
1 Packaging label:
packaging and provides a code, the serial number of the
boiler and the bar code
2 Energy Efficiency Label:
of the packaging to notify the User of the level of energy
savings and reduced environmental pollution produced by
the appliance
3 Data plate:
boiler and provides the technical specification, appliance
performance and any other information required by law.
1
2
III
++
A
A
+
A
B
A
C
B
D
C
D
E
E
F
F
G
G
kW
dB
2015811/2013
3
this is located on the outside of the
this is positioned on the outside
this is located inside the front panel of the
1
2
1.2 Check and safety devices
The
ADAX
boilers are equipped with the following check and
safety devices:
– thermal safety thermostat 100°C
– 3 bar relief valve
– heating water pressure transducer
– delivery sensor
– DHW sensor
– smoke probe.
d
a
4
IT IS FORBIDDEN
to commission the appliance with safety devices which
do not work or which have been tampered with.
DANGER
Safety device may only be replaced by professional
qualified personnel using
parts.
KOVARSON
original spare
KEY:
1
Packaging label
2
Energy Efficiency Label
3
Data plate
3
Fig. 1
1.3.1 Data label
NAME
SERIAL NUMBER
YEAR OF MANUFACTURE
WATER CONTENT IN BOILER
MAX HEAT INPUT
MAX USEFUL OUTPUT (80-60°C)
MAX USEFUL OUTPUT (50-30°C)
MAX OPERATING PRESSURE
D.H.W. CONTENT
MAX HEAT INPUT
MAX OPERATING PRESSURE
FLOW RATE
ELECTRICAL SUPPLY
MAXIMUM ABSORBED POWER
COUNTRY OF INTENDED
INSTALLTION
APPLIANCE CATEGORY
APPLIANCE TYPE
CODE
REFERENCE DIRECTIVE
PIN NO.
MIN HEAT INPUT
MIN USEFUL OUTPUT (80-60°C)
MIN USEFUL INPUT (50-30°C)
MAX OPERATING TEMPERATURE
MIN HEAT INPUT
MAX D.H.W. TEMPERATURE
ELECTRICAL PROTECTION DEGREE
NOx CLASS
GAS COUNCIL NUMBER CODE (UK)
WRAS CERTIFICATION (UK)
TYPE OF GAS
SUPPLY PRESSURE
APPLIANCE CLASSIFICATION
m
Fig. 2
CAUTION
Tampering with, removing or failing to display the identification plate or carrying out any other operation which does not
allow safe identification of the product or which may hinder installation and maintenance operations.
5
1.4 Structure
28
151617
11
12
13
14
10
2930
1
2
3
4
27
26
5
25
6
7
24
8
9
23
22
21
19
18
20
1
Heat exchanger bleed point
2
Heat exchanger
3
Combustion chamber door
4
Oversleeve
5
Flame inspection window
6
Ignition/detection electrode
7
Return probe
8
Heat safety thermostat
9
Flow probe
10
Fan
11
Condensate siphon
12
Diverter valve
13
System filling unit
14
Domestic hot water sensor
15
Control panel
16
Domestic hot water heat exchanger
6
17
Gas valve
18
Domestic hot water filter
19
System safety valve
20
Boiler drain
21
System pump
22
Water pressure transducer
23
Automatic vent valve
24
Air-gas mixer
25
Expansion vessel
26
Air inlet pipe
27
Air-smoke chamber
28
Exhaust flue probe
29
Air inlet
30
Smoke outlet
Fig. 3
1.5 Technical features
DESCRIPTION
20253035
CERTIFICATIONS
Country of intended installationIT – ES – PT – GR – SI
FuelG20 / G31
PIN number1312CP5936
CategoryII2H3P
Appliance classificationB23P - B33P - B53P - C13 - C33 - C43 - C53 - C63 - C83
NO
EFFICIENCY
Max useful efficiency (80-60°C)%98,598,398,398,6
Min useful efficiency (80-60°C)%97,597,998,398,6
Max useful efficiency (50-30°C)%107107,1107,3107,1
Min useful efficiency (50-30°C)%107,5106,3108,3107,1
Useful efficiency at 30% of load (40-30°C)%107,0107,0107,0107,0
Thermal efficiency (EEC 92/42)
Losses after shutdown at 50°CW84888892
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input (Q
Minimum heat input (Q
HEATING
Heating seasonal energy efficiency classAAAA
Heating seasonal energy efficiency%90909091
Sound powerdb(A)59615860
DOMESTIC HOT WATER
Domestic hot water energy efficiency classAAAB
Domestic hot water energy efficiency%81808081
Stated domestic hot water profile loadXLXLXLXXL
ELECTRICAL SPECIFICATIONS
Power supply voltageV230
FrequencyHz50
Absorbed electrical power (Q
Absorbed electrical power at (Q
n
max)W708592111
n
min)W52525758
Absorbed electrical power in stand-byW3,63,63,63,6
Electric degree of protectionIPX5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C)°C82 / 6689 / 7177 / 6775 / 62
Smoke temperature at Max/Min flow (50-30°C)°C59 / 4571 / 5158 / 4954 / 39
Maximum smoke flow Min/Maxg/s11,2 / 1,913,1 / 2,216,3 / 2,818,6 / 3,3
CO
Nozzle diameter (G20-G31)mm5,35,35,35,3
Gas consumption at Max/Min flow rate (G20)m
Gas consumption at Max/Min flow rate (G31)Kg/h1,86 / 0,312,17 / 0,372,71 / 0,463,10 / 0,74
Gas supply pressure (G20/G31)
TEMPERATURE PRESSURE
Max operating temperature (T max)°C85
Heating adjustment range°C20÷80
Domestic hot water adjustment range°C10÷60
Max operating pressure (PMS)
Water content in boilerl4,654,754,955,60
3
/h2,53 / 0,422,96 / 0,503,70 / 0,634,23 / 0,74
mbar20 / 3720 / 3720 / 3720 / 37
kpa2 / 3,72 / 3,72 / 3,72 / 3,7
bar3
kpa300
20253035
ADAX
(*) Heat input calculated using the lower heat output (Hi)
Lower Heat Output (Hi)
G20 Hi.
9.45 kW/m3 (15°C, 1013 mbar) -
1.6 Main water circuit
1
2
3
4
5
6
12
7
G31 Hi.
12.87 kW/kg (15°C, 1013 mbar)
11
9
10
8
9
Automatic vent valve
10
Pump
11
CH expansion vessel
12
Diverter valve
13
Automatic by-pass
14
Domestic hot water sensor
15
Gas valve
16
Domestic hot water flow meter
17
Domestic hot water filter
18
Boiler drain
19
System relief valve
20
System filling cock
21
Condensate drain siphon
1.7 Sensors
The sensors installed have the following characteristics:
– Dual sensor (thermal safety/output) NTC R25°C; 10kΩ β25°-
13
21
20
KEY:
M System delivery
R System return
U Domestic hot water outlet
E Domesti hot water inlet
S Safety valve outlet
14
15
16
19
17
Fig. 4
85°C: 3435
– domestic hot water sensor NTC R25°C; 10kΩ β25°-85°C: 3435
– external sensor NTC R25°C; 10kΩ β25°-85°C: 3435
0°C 1°C 2°C 3°C 4°C 5°C 6°C 7°C 8°C 9°C
0°C
27279
26135
25044
24004
23014
22069
21168
20309
19489
18706
17959
17245
16563
15912
15289
14694
14126
13582
13062
8945
6247
4444
3216
2365
1766
1336
1024
12565
8622
6033
4300
3116
2296
1717
1300
998
10°C
20°C
30°C
40°C
50°C
60°C
70°C
80°C
90°C
100°C
12090
8313
5828
4161
3021
2229
1669
1266
973
11634
8016
5630
4026
2928
2164
1622
1232
11199
7731
5440
3897
2839
2101
1577
1199
10781
7458
5258
3773
2753
2040
1534
1168
10382
7196
5082
3653
2669
1982
1491
1137
9999
6944
4913
3538
2589
1925
1451
1108
9633
6702
4751
3426
2512
1870
1411
1079
9281
6470
4595
3319
2437
1817
1373
1051
G Gas supply
Sc Condensate outlet
1
Condensing heat exchanger
2
Combustion chamber
3
Fan
4
Return probe
5
Thermal safety thermostat
6
Flow probe
7
Domestic hot water heat exchanger
8
Pressure transducer
Correspondence of Temperature Detected/Resistance
Examples of reading:
TR=75°C → R=1925Ω
TR=80°C → R=1669Ω.
Resistance R (Ω)
8
1.8 Expansion tank
080010001200600400200
100
200
300
400
500
600
The expansion vessel installed on the boilers has the following
characteristics:
DescriptionU/M
Total capacityl9,010,0
Prefilling pressure
Useful capacityl5,06,0
Maximum system
content (*)
(*) Conditions of:
Average maximum temperature of the system 85°C
Start temperature at system filling 10°C.
m
CAUTION
– For systems with water content exceeding the
maximum system content (as indicated in the
table) an additional expansion vessel must be
prearranged.
– The difference in height between the relief valve
and the highest point of the system cannot exceed
6 metres. If the difference is greater than 6 metres,
increase the prefilling pressure of the expansion
vessel and the system when cold by 0.1 bar for each
meter increase.
kPa100
bar1,0
20253035
l124140
ADAX
1.9 Circulation pump
The flow-head performance curve available for the heating
system is shown in the graph below.
1.9.1 Pump equipped with LED
LED
Fig. 6
ADAX 30
warning lights which indicate:
For the "Any pump faults and possible solutions" see the
relevant section at the end of the manual.
and
ADAX 35
LED colourStatusTrouble-shooting
LED offNo electrical power
Green
Red/GreenFlashing
RedFlashingPermanent safety shutdown
boilers use the pump equipped with LED
Permanently
on
Normal operation
"Transient safety shutdown"
Anomaly in progress
RESIDUAL HEAD (mbar)
0
m
CAUTION
The appliance is equipped with a by-pass which
ensures water circulation in the boiler when the
thermostatic valves or cocks are used in the system.
40
35
25
30
FLOW RATE (l/h)
Fig. 5
9
1.10 Control panel
21
1
FUNCTIONAL BUTTONS
If pressed once or more than once for at least 1 second
y
during normal operation, this button allows the user
to change the boiler operating mode in a cyclical
sequence (Stand-by – Summer – Winter). If the boiler is
experiencing a fault which can be reset, it allows boiler
operation to be unblocked.
During normal operation, pressing the button displays
r
the domestic hot water set point which can be between
10 and 60°C. In "parameter setting", the user can scroll
through the parameter index (decreasing) by pressing
this button.
During normal operation, pressing the button displays
t
the heating set point which can be between 20 and
80°C. In "parameter setting", the user can scroll
through the parameter index (increasing) by pressing
this button.
Fig. 7
NOTE:
pressing any one of these buttons for more than 30
seconds generates a fault on the display without preventing
boiler operation. The warning disappears when normal
conditions are restored.
2
DISPLAY
“SUMMER”
l
operating in "Summer" mode or if only the domestic
hot water mode is enabled via the remote control. If the
symbols
chimney sweep function is active.
“WINTER”
n
operating in "Winter" mode or if both the domestic hot
water and heating modes are enabled via the remote
control. With the remote control, if no operating modes
have been enabled both symbols
“RESET REQUIRED”
d
having repaired the fault, normal boiler operation can be
restored by pressing the button
“DOMESTIC HOT WATER”
r
a DHW request or during the "chimney sweep function"
It flashes during the selection of the domestic hot water
set point.
“HEATING”
t
operation or during the "chimney sweep function It
flashes during the selection of the heating set point.
“BLOCK” DUE TO NO FLAME
f
“FLAME PRESENCE”
F
“POWER LEVEL”
v
the boiler is operating.
“PARAMETER”
p
parameter setting/display, or "info" or "counter", or in
"activated alarms" (history).
“ALARM”
A
number specifies the cause which generated the alarm.
“CHIMNEY SWEEP”
z
sweep function" has been activated.
. This symbol appears when the boiler is
and n are flashing, this indicates that the
l
. This symbol appears when the boiler is
and n will be off.
l
. The message indicates that after
.
y
. This symbol is present during
. This symbol lights up during heating
.
.
. This indicates the power level at which
. This indicates that the user may be in
. This indicates that a fault has occurred. The
. This indicates that the "chimney
During normal operation, pressing this button allows
<
the user to reduce the heating or DHW set point on
the basis of the selection made previously. If there is a
Remote Control (Open Therm), after having selected the
heating button, the user can modify the incline of the
climatic curve (decreasing it) by pressing the button (
In "parameter setting/display", the user can modify the
parameter setting or value (decreasing) by pressing this
button.
During normal operation, pressing this button allows
>
the user to increase the heating or DHW set point on
the basis of the selection made previously. If there is a
Remote Control (Open Therm), after having selected the
heating button, the user can modify the incline of the
climatic curve (increasing it) by pressing the button (
In "parameter setting/display", the user can modify the
parameter setting or value (increasing) by pressing this
button.
Programming connector cover plug.
c
10
-
).
+
).
1.11 Wiring diagram
BLUE
230 V - 50 Hz
PI
VD
23
L
N
CN11
BROWN
BLACK
BROWN
BLUE
BROWN
BLUE
BROWN
BLUE
BLUE
FLM
VCC
RED
BROWN
GND
IN
WHITE
GREEN
SF
V
4 3 2 1
BLUE
BLACK
GREEN
RED
BLUE
BLACK
BLACK
CR
TA
CN15
TA2
BLACK
BLACK
SS
RED
RED
TPA
GND
RED
5V
OUT
GREEN
ORANGE
RED
RED
SR
SE
3214 5 6
BLUE
GREEN
GREEN
EV
CN13CN12
CN14
F
BLACK
BLACK
CN2
CN3
BLUE
BLUE
TS
EAR
m
CN5
CN4CN1
SM
BLUE
BROWN
RED
GREEN
BLACK
BLUE
SR
Return Probe
TS
Safety thermostat
TFU
Thermal fuse
SF
Exhaust flue probe
FLM
Flow meter
VD
Diverter valve
TPA
Pressure transducer
TA-TA2
Air thermostat
SE
External sensor
CR
Remote control (instead of air thermostat)
TRA
L
Line
N
Neutral
F
Fuse (3.15AT)
TRA
Ignition transformer
PI
System pump
V
Fan
EAR
Ignition / Detection electrode
EV
Gas supply solenoid valve
SS
Domestic hot water sensor
SM
Flow probe
CD. 6324920
CN17
CN6
To connect the "Air Thermostat" or, alternatively the "Remote Control", remove the bridge
between terminals 5-6.
CAUTION
Users must:
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
– Use an omnipolar cut-off switch, disconnect switch
in compliance with EN Standards
– Respect the connections L (Live) - N (Neutral)
– Ensure that the special power cable is only replaced
with a cable ordered as a spare part and connected
by professionally qualified personnel
– Connect the earth wire to an effective earthing
system. The manufacturer is not responsible for any
damage caused by failure to earth the appliance or
failure to observe the information provided in the
wiring diagrams.
TFU
Fig. 8
11
2 INSTALLATION
H
2.1 Unpacking the product
ADAX
appliances are delivered in a single unit protected by
cardboard packaging.
Fig. 9
The plastic bag found inside the packaging contains the
following:
– Installation, use and maintenance manual
– Paper template for boiler installation
– Certificate of warranty
– Hydraulic test certificate
– System booklet
– Bag with expansion plugs
Description
L (mm)400
D (mm)250250250300
H (mm)700
Weight (kg)28,528,530,032,5
20253035
ADAX
2.3 Handling
Once the packaging has been removed, the appliance is to
be handled manually, tilting it slightly, lifting it and applying
pressure in the points indicated in the figure.
Fig. 11
d
2.2 Dimensions and weight
IT IS FORBIDDEN
Do not leave packaging material around or near
children since it could be dangerous. Dispose of it as
prescribed by legislation in force.
d
a
IT IS FORBIDDEN
DO NOT
"solid" parts such as the base and the rear structure.
DANGER
Use suitable tools and accident protection when
removing the packaging and when handling the
appliance.
hold onto the appliance cladding but use the
2.4 Installation room
The room where the appliance is to be installed must comply
with the Technical Regulations and Legislation in force. It must
be equipped with suitably sized ventilation openings when the
installation is a "TYPE B" installation.
The minimum temperature of the installation room must NOT
-5 °C
be lower than
m
L
P
CAUTION
Remember to consider the space needed in order to
access the safety/adjustment devices and to carry out
maintenance interventions (see Fig. 12).
.
Fig. 10
12
APPROXIMATE MINIMUM DISTANCES
≥ 300 mm
≥ 900 mm
1
2
≥ 50 mm
Before removing an old heat generator from an existing system,
it is recommended that the user:
– puts a descaling additive into the water system
– allows the system to work with the generator active for a few
days
– drains the dirty water from the system and flushes the system
with clean water once or more than once.
If the old generator has already been removed or is not available,
replace it with a pump to circulate water in the system and then
proceed as described above.
Once cleaning operations have been carried out and before
installing the new appliance, it is recommended that a fluid
is added to the water system to protect it from corrosion and
deposits.
Fig. 12
2.5 New installation or installation of a
replacement appliance
When
ADAX
boilers are installed on old systems or systems
requiring updating, it is recommended the installer checks that:
– the connecting flue pipe is suitable for the combustion
temperature of the appliance, calculated and manufactured in
compliance with Standards, that it is as straight as possible,
air tight, isolated, with no obstructions or restriction and
that it has appropriate condensate collection and evacuation
systems
– the electrical system has been manufactured in compliance
with specific Standards and by professionally qualified
personnel
– the fuel delivery line and the tank (LPG) comply fully with
specific Standards
– the expansion vessel ensures total absorption of the fluid
dilation in the system
– the pump flow-head performance is sufficient for the system
characteristics
– the system is clean, free of any sludge, deposits, de aerated
and air tight. For system cleaning, please refer to the relevant
paragraph.
m
CAUTION
For further information on the type of additive and
usage, please contact the appliance manufacturer.
2.7 Water system treatment
When filling and restoring the system it is good practice to use
water with:
– aspect: clear if possible
– pH: 6÷8
– hardness: < 25°f.
If the water characteristics are different from those indicated, it
is recommended that a safety filter is used on the water delivery
pipe to retain impurities, and a chemical treatment system to
protect against possible deposits and corrosion which could
affect boiler operation.
If the systems are only low temperature systems, it is
recommended that a product is used to prevent the development
of bacteria.
In any case, please refer to and comply with Legislation and
specific Technical Standards in force.
2.8 Boiler installation
ADAX
boilers leave the factory with a paper template for
installation onto a solid wall.
For installation:
– position the paper template (1) on the wall (2) where the boiler
is to be mounted
– make the holes and insert the expansion plugs (3)
– hook the boiler onto the plugs.
3
m
CAUTION
The manufacturer declines all liability for any damage
caused by an incorrect implementation of the smoke
outlet.
2.6 Cleaning the system
Before installing the appliance on a newly constructed system or
replacing a heat generator on an existing system, it is important
that the system is thoroughly cleaned to remove sludge, slag,
dirt, residue etc.
Fig. 13
13
m
CAUTION
– The height of the boiler is to be such that disassembly
and maintenance interventions are facilitated.
2.9 Hydraulic connections
The plumbing connections have the following characteristics
and dimensions.
2.9.1 Plumbing accessories (optional)
To facilitate plumbing and gas connections to the systems, the
accessories as shown in the table below are available and are to
be ordered separately from the boiler.
DESCRIPTIONCODE
Installation plate8075441
Curve kit8075418
Curve and valve kit with connections from DIN to
SIME
Cocks kit8091806
Valve kit with connections from DIN to SIME8075442
Wall mount replacement kit for other makers8093900
Connection protection kit (for models 25-30-35 kW)8094530
Polyphosphate dosing kit8101700
Dosing recharge kit8101710
Solar kit for instant combination boilers8105101
NOTE:
kit instructions are supplied with the accessory itself or
are to be found on the packaging.
8075443
2.10 Condensate outlet/collection
In order to collect the condensate, it is recommended that:
– the appliance condensate outlets and the smoke outlet are
ducted
– a neutralising device is prearranged
>3%
– the outlet incline is
.
48
Sc
65 65 65 65==
M
UGER
400
Description
M - System deliveryØ 3/4" G
R - System returnØ 3/4" G
U - Domestic hot water outputØ 1/2" G
E - Domestic hot water inletØ 1/2" G
G - Gas supplyØ 3/4" G
Sc - Condensate outletØ 20 mm
20253035
95
175
ADAX
Sc
Fig. 14
m
CAUTION
– The condensate outlet duct must be airtight,
suitably sized to that of the siphon and must not be
restricted at any point.
– The condensate outlet must be constructed in full
compliance of the National or Local regulations in
force.
– Before commissioning the appliance, fill the siphon
with water.
2.11 Gas supply
ADAX
boilers leave the factory prearranged for gas G20 and can
also work with G31 without the need for any type of mechanical
”03”
conversion. Simply select parameter
setting and display") and set the type of gas to be used.
If changing the type of gas to be used, carry out the entire
appliance
Boiler connection to the gas mains must be carried out in full
compliance with installation Standards in force.
Perform the following checks before making the connection:
– check that the boiler is compatible with the type of gas supply
– the pipes are clean
– the gas supply pipe is the same dimension as or greater than
that of the boiler fitting (G3/4") and with a load loss less than
or equal to that contemplated between the gas mains and the
boiler.
“COMMISSIONING”
phase.
(see “Parameter
a
m
14
DANGER
Once installation has been completed, check that
the joints are air tight as indicated in the installation
Standards.
CAUTION
It is recommended that the gas line has a suitable
filter.
2.12 Smoke outlet and combustion air inlet
max 0,5 m
ADAX
boilers must be equipped with appropriate smoke flue ducts and combustion air inlet ducts. These ducts are considered an
integral part of the boiler and are provided by
of the type permitted and the system requirements.
Permitted outlets
KOVARSON
as an accessory kit, to be ordered separately from the appliance on the basis
B33P
C53
C83
B23P
B53P
B23P-B53P
Combustion air inlet into the atmosphere and smoke
outlet to open air.
B33P
Combustion air inlet into the atmosphere and smoke
outlet into single flue.
NOTE:
opening for combustion air (6 cm2 x kW).
C13
Concentric wall smoke outlet The pipes can start from
the boiler but the outlets must be concentric or close
together (no more than 50 cm) to be subject to similar
wind conditions.
C43
C43
C33
C63
Same type as C42 but with outlet and inlet made from
pipes which are sold and certified separately.
C53
Separate wall or roof inlet and outlet in different
pressure areas.
NOTE:
the inlet and outlet must never be positioned on
opposing walls.
C83
Outlet in single or shared flue or with inlet on wall.
C33
C13
C13
max 0,5 m
C33
Concentric roof smoke outlet The pipes can start from
the boiler but the outlets must be concentric or close
together (no more than 50 cm) to be subject to similar
wind conditions.
C43
Outlet and inlet in shared or separate flue pipes but
subjected to similar wind conditions.
m
P:
smoke outlet system designed to operate with
positive pressure.
Fig. 15
WARNINGS
– The smoke flue and the connection to the flue pipe must be in compliance with the national and local Standards and
Legislation in force.
– The use of rigid ducts which are resistant to temperature, condensate, mechanical stress and are air-tight is compulsory.
– Outlet ducts which are not isolated are a risk of danger.
15
2.12.1 Coaxial duct (Ø 60/100mm and Ø 80/125mm)
Coaxial accessories
Description
Coaxial duct kit80962508096253
Extension W. 1000 mm80961508096171
Extension W. 500 mm80961518096170
Vertical extension W. 140 mm with
smoke analysis take-off point
Adapter for Ø 80/125 mm-8093150
Additional 90° curve80958508095870
Additional 45° curve80959508095970
Tile with joint80913008091300
Roof outlet terminal W. 1284 mm80912058091205
Ø 60/100 mmØ 80/125
8086950-
Code
mm
Load loss - Equivalent lengths
Model
90° curve1,52
45° curve11
Leq (linear metres)
Ø 60/100 mmØ 80/125
mm
Minimum-Maximum Lengths
Duct Length Ø 60/100Duct Length Ø 80/125
Model
ADAX 20
ADAX 25
ADAX 30
ADAX 35
W
Horizontal
(m)
Min.
-61,38-121,215
-61,37-101,213
-41,36-101,213
-41,36-101,213
Max.
H Vertical
(m)
Min.
Max.
W
Horizontal
(m)
Min.
Max.
H Vertical
(m)
Min.
Max.
2.12.2 Separate ducts (Ø 60mm and Ø 80mm)
Constructing outlets for separate ducts indicates the use of the
"air-smoke split pipe system". This is to be ordered separately
from the boiler and when connected to the other accessories,
from those listed in the table below, completes the smokeoutlet/ combustion air inlet assembly.
Separate accessories
Description
Air-smoke split pipe system (without
take-off point)
Air-smoke split pipe system (with takeoff point)
90° curve M-F (6 pieces)80899218077450
90° curve M-F (with take-off point)8089924M-F 80/60 reduction8089923Extension W. 1000 mm (6 pieces)80899208077351
Extension W. 500 mm (6 pieces)-8077350
Extension W. 135 mm (with take-off
point)
Wall outlet terminal80895418089501
Internal and external ring nut kit80915108091500
Inlet terminal80895408089500
45° curve M-F (6 pieces)80899228077451
Collector8091400
Diameter Ø
60 (mm)
8093060-
Code
Diameter Ø
80 (mm)
-8093050
-8077304
Description
Tile with joint8091300
Roof outlet terminal W. 1390 mm8091204
Inlet/outlet fitting Ø 80/125 mm-8091210
Diameter Ø
60 (mm)
Code
Diameter Ø
80 (mm)
Split pipe system
2
3
4
1
Fig. 16
KEY:
1
Split pipe system with take-off point
2
Air inlet
3
Smoke outlet
4
Flue gas analysis socket
m
CAUTION
–
The maximum total length of the ducts
, obtained by
adding the lengths of the inlet and outlet pipes, is
determined by the load losses of the individual
accessories used and
For all boiler versions, the total extension
–
must not exceed 15 mm H2O
must not in
.
any case exceed 25 m (inlet) + 25 m (outlet) for ducts
Ø 80 mm. |b|The total extension must not in any case
exceed 6 m (inlet) + 6 m (outlet) for ducts Ø 60mm
for models
ADAX 20
m (outlet) for models
and
ADAX 30
ADAX 25
and
, and 4 m (inlet) + 4
ADAX 35
, even if
the total load loss is less than the maximum which
can be applied.
Horizontal
extension W. 1000 mm80773510,250,250,250,25
Vertical extension
W. 1000 mm
Wall terminal80895010,150,500,150,50
Roof outlet
terminal (*)
80773510,250,250,250,25
80912041,50,21,50,2
ADAX 30ADAX 35
Inlet
Drain
Inlet
Drain
(*) The losses of the roof outlet terminal at inlet include the
manifold code 8091400.
NOTE:
for the boiler to operate correctly it is necessary that a
minimum distance of 0.50 m of the duct is respected with a 90°
inlet curve.
Fig. 17
2.13 Electrical connections
The boiler is equipped with a ready wired power cable which is
to be connected to a 230V~50 Hz network.
If this cable needs to be replaced, an original spare must be
requested from
KOVARSON
Therefore only the connections of the original components
as shown in the table are needed. These are to be ordered
separately from the boiler.
DESCRIPTIONCODE
External sensor kit (ß=3435, NTC 10KOhm at 25°C)8094101
Power cable (dedicated)6323875
Remote control HOME (open therm)8092280
Remote control HOME PLUS (open therm)8092281
m
CAUTION
The maintenance interventions described must ONLY
be carried out the professionally qualified personnel.
.
17
a
OFF
To facilitate introduction of the connection wires of the optional
components into the boiler:
– remove the two screws (1), pull the front panel (2) forwards
DANGER
Before carrying out any interventions described:
– set the main system switch to "OFF"
– close the gas valve
– make sure that no hot parts inside the appliance are
touched.
Fig. 18
and release it from the top by lifting it
– insert the connection wires into the cable gland (6) and the
opening (7) on the control panel
6
7
Fig. 21
– bring the control panel (4) to the original position and secure
it with the screws (3) which were removed previously
– connect the component wires to the terminal board (8)
following the indications provided on the data plate (9).
2
1
Fig. 19
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
4
4
9
8
TA
SE
m
6
5
4
3
2
1
3
Fig. 22
CAUTION
The following is mandatory:
– to use an omnipolar cut-off switch, disconnect
switch in compliance with EN Standards
– if the power cable is to be replaced, that ONLY
a special cable is used with a factory produced
re-wired connector, ordered as a spare part and
connected by a professionally qualified person
– to connect the earth wire to an effective earthing
system (*)
– that before any intervention on the boiler, the mains
power is disconnected by setting the main system
switch to "OFF".
b
3
a
18
5
Fig. 20
(*) The manufacturer is not responsible for any damage caused
by failure to earth the appliance or failure to observe the
information provided in the wiring diagrams.
d
20151050-10-15-5-20
°C
CR
SE
SE
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
2.13.1 Outdoor sensor
The boiler is prearranged for connection to an external air
temperature sensor and can operate with a sliding temperature.
This means that the delivery temperature sent to the boiler can
vary on the basis of the external temperature depending on the
climatic curve selected from those shown in the diagram (Fig.
23).
When fitting the sensor on the outside of the building, follow
the instructions provided on the packaging of the product itself.
Climatic curve
ONE DIRECT ZONE system , external sensor and air thermostat.
SE
M
R
TA
CH flow temperature
90
80
70
60
50
40
30
20
m
K=9K=6 K=4,5K=3
CAUTION
If there is an external sensor, in order to select the
optimal climatic curve for the system and therefore
the delivery temperature based on the external
temperature:
– press the button
– press buttons
been selected (within the range
K=2,2
K=1,5
K=0,75
°C
Outdoor temperature
Fig. 23
for 1 second
t
or < until the required curve K has
>
K=0.0 - K=9.0
).
Fig. 24
MULTI ZONE system - with pump, air thermostat and external
sensor.
TA1
TA
M
MULTI ZONE system - with zone valve, air thermostat and
external sensor.
RL1
R
SP
TA2
RL2RL3
TA3
P2P1
P3
Fig. 25
2.13.2 Chrono-thermostat or Air Thermostat
The electrical connection of the chrono-thermostat or air
thermostat has already been described. When fitting the
component in the room where the readings are to be taken,
follow the instructions provided on the packaging of the product
itself.
2.13.3 EXAMPLE of use of the command/control
TA
TA1
M
R
VZ1VZ2VZ3
TA2TA 3
device on some types of heating systems
KEY
M System delivery
R System return
CR Remote control
SE Outdoor sensor
TA÷TA3 Air thermostat for the zone
VZ1-VZ3 Zone valves
RL1-RL3 Zone relays
P1-P3 Zone pump
SP Hydraulic separator
m
CAUTION
Set the parameter "tS 17 = DELAY SYSTEM PUMP
ACTIVATION to allow the opening of zone valve Vz.
Fig. 26
19
2.14 Refilling or emptying
1
4
Before carrying out the operations described below, make
sure that the main system switch is set to "ON" in order for the
display to show the pressure level in the system during refilling.
Make sure that the operating mode is set to "Stand-by";
the case, press the button
mode has been selected.
ON
for at least 1 second until this
y
if this is not
3
Fig. 27
2.14.1 REFILL operations
Remove the front panel:
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it.
2
Fig. 28
Domestic hot water circuit:
– open the isolation valves of the domestic hot water circuit (if
present)
– open one or more than one hot water valve to fill and bleed the
domestic hot water circuit
– once bleeding has been completed, close the hot water valves.
4
Fig. 29
NOTE:
to completely remove all air from the system, it is
recommended that this operation is repeated a number of times.
– check the pressure on the display and if necessary top up until
the correct pressure reading appears
– close the automatic bleed valve (3)
– fill the siphon disconnecting it from the pipe or using (by
means of) the smoke take-off point.
Refit the front panel of the boiler hooking it on at the top,
pushing it forwards and securing it with the screw (1) which was
removed previously.
2.14.2 EMPTYING operations
Domestic hot water circuit:
– close the domestic hot water circuit isolation valve
(prearranged in installation)
– open one or more than one hot water valve to fill and bleed the
domestic hot water circuit.
Boiler:
– loosen the automatic bleed valve (3)
– close the heating circuit isolation valves (prearranged in
installation)
– check that the filling valve (4) is closed
– connect a rubber hose to the boiler drain valve (7) and open it
– when it has fully emptied, close the drain valve (7)
– close the automatic bleed valve (3).
Heating circuit:
– open the isolation and air bleeding valves in the highest points
of the system
– loosen the automatic bleed valve (3)
– open the isolation valves of the heating circuit (if present)
– open the filling valve (4) and fill the heating system until a
pressure of
– close the filling valve (4)
– check that there is no air in the system by bleeding all the
radiators and the circuit on the high points of the system
20
1-1.2 bar
is shown on the display
3
7
Fig. 30
3 PUTTING INTO SERVICE
3.1 Preliminary operations
Before commissioning the appliance, check that:
– the type of gas is correct for the appliance
– the gas isolation valves for the heating system and the water
system are open
– the pump impeller rotates freely
– the siphon has been filled.
3.2 Before commissioning
After having carried out the preliminary operations, perform the
following to start the boiler:
– set the main system switch to "ON"
ON
– as soon as the symbols begin to flash, release the buttons <
and press the button y,
and
>
– the "Automatic self-calibrating procedure" starts
open one or more than one hot water tap
–
– the values flash on the display:
followed by an "intermediate value" and finally
value)
within 3 seconds
“100”
(maximum value),
“00”
(minimum
Fig. 31
– the type of gas for which the boiler has been calibrated,
“LG”
(methane) or
After this the correct representation of the symbols will be
checked and finally
– check that the system pressure as shown on the pressure
gauge when the system is cold , is between
– press the button Y once for at least 1 second to select "SUMMER
mode"
l
moment will appear on the display
(LPG,) will appear followed by the power.
“- -”
will appear on the display
1 and 1.2 bar
. the value of the delivery sensor detected at that
“nG”
The operator must wait for approximately 15 minutes for the
"self-calibrating procedure" to end and the message "SUMMER
mode"
terminated:
– close the taps opened previously and check that the appliance
shuts down.
if there is a fault, the message
the fault code (eg.
d
m
– press the button
mode"
detected at that moment will appear on the display
to reappear on the display Once the procedure has
l
“ALL”
will appear on the display,
“06”
- no flame detected) and the message
.
CAUTION
To restore the start conditions press and hold the
button
can be performed up to a maximum of 6 times without
the "self-calibrating procedure" being interrupted.
. The value of the heating water temperature
n
for more than 3 seconds. This operation
y
once for at least 1 second to select "WINTER
Y
3.2.1 Self-calibrating procedure
Carry out the "Automatic self-calibrating procedure" as follows:
– press button
maximum using the button
– press and hold down the buttons < and > at the same time for
approximately 10 seconds until the flashing symbols
appear on the display
n
and set the DOMESTIC HOT WATER SET to
r
>
l
and
– adjust the air thermostat and check that the boiler starts and
operates correctly
– carry out the procedure"Chimney sweep function", to check
the mains gas pressure, detect the combustion parameters
and to measure the combustion efficiency required by
legislation in force.
21
3.3 Parameter setting and display
To go into the parameter menu:
– from the selected mode (eg. WINTER)
– once the required parameter has been reached, press the
buttons
or <to modify the value within the permitted range.
>
The modifications are stored automatically.
– press the buttons r and t (for approximately 5 seconds) at
the same time until
“PAR 01”
(parameter number) and the
value set (0÷4) appears on the display
When all the parameter modifications have been made, exit the
parameter menu by pressing and holding down the buttons
all at the same time
and
t
for at least 5 seconds until the initial
screen is displayed.
– press the button t to scroll up the list of parameters and
to scroll down the list
then
r
NOTE:
holding the buttons r or t increases the speed of the
scrolling movement.
3.4 List of parameters
TypeNr.DescriptionRangeU/MStepDefault
CONFIGURATION
PAR01
PAR02
PAR03
PAR04
PAR08External sensor value correction-5 .. +5°C10
PAR13Minimum Heating Temperature Adjustment20 .. PAR 14°C120
PAR14Maximum Heating Temperature AdjustmentPAR 13 .. 80°C180
PAR15Maximum power heating0 .. 100%1100
PAR20Maximum power domestic hot water0 .. 100%1100
PAR21Minimum power heating/domestic hot water (premixed)0 .. 100%10
PAR22
PAR23
22
Index showing boiler power in kW
1 = 20; 2 = 25; 3 = 30; 4 = 35
Hydraulic configuration
0 = rapid
1 = storage tank with thermostat or heating only
2 = hot water tank with sensor
3 = two programmer
4=instant with solar power input
5 = open vent
Gas Type Configuration
0 = G20; 1 = G31
Combustion configuration
0 = sealed chamber with combustion control
DOMESTIC HOT WATER - HEATING
External Sensor Antifreeze Threshold
-- = Disabled
Domestic Hot Water Modulation with Flow meter
0 = Disabled
1 = Enabled
Domestic hot water preheating enabling
0 = OFF; 1 = ON
External relay 1 function
0 = not used; 1 = remote alarm NO; 2 = remote alarm NC; 3 = zone
valve; 4 = automatic filling; 5 = external request; 6 = recirculation
pump; 7 = zone valve with OT; 8 = relaunch pump
1 .. 4-1
0 .. 5-10
0 .. 1-10
---0
-9 .. +5°C1-2
seconds
x 10
seconds
x 10
0 .. 1-11
0 .. 1-10
0 .. 8--0
13
10
r
1 or 2 or 3
or 4
TypeNr.DescriptionRangeU/MStepDefault
OFF
CONFIGURATION
External relay 2 function
PAR24
PAR25
PAR26Zone Valve / Pump Relaunch Delay0 .. 99Min11
PAR28DHW activation delay with solar power0 .. 30Min10
PAR29
PAR30Maximum domestic hot water temperature35 .. 67°C160
0 = not used; 1 = remote alarm NO; 2 = remote alarm NC; 3 = zone
valve; 4 = automatic filling; 5 = external request; 6 = recirculation
pump; 7 = zone valve with OT; 8 = relaunch pump
Auxiliary TA function
0 = according to TA
1 = TA Antifreeze
2= domestic hot water disabled
Anti-legionella Function (Only hot water tank)
-- = Disabled
Digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer
2 = water pressure transducer (only pressure displayed)
System pump forcing (only in winter mode)
0 = Disabled
1 = Enabled
RESET
0 .. 8--0
0 .. 2-10
50 .. 80-1--
0 .. 2-11
-- = No modulation
AU = Automatic 30
.. 100
0 .. 1-10
%10AU
In the event of a fault/malfunction the message
on the display with the alarm number eg.
“ALL”
“ALL 04”
will appear
(Domestic
Hot Water Sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting the
main switch to "OFF"
Fig. 32
– as a precautionary measure, close the gas isolation valve.
Repair the fault and start-up the boiler again.
NOTE:
after having repaired the fault, when the alarm number
appears on the display together with the message
(see figure), press the button
for approximately 3 seconds
y
d
to start the appliance up again.
3.5 Fault / malfunction codes
TypeNr.Description
ALL02Low water pressure in system
ALL03High water pressure in system
ALL04Domestic hot water sensor fault
ALL05Delivery sensor fault
ALL06No flame detection
ALL07Safety thermostat intervention
ALL08Fault in the flame detection circuit
ALL09No water circulating in the system
ALL10Auxiliary sensor fault
ALL11Gas valve modulator disconnected
ALL12Incorrect configuration of the open /sealed chamber
ALL13Flue gas thermostat tripped
ALL14Smoke probe fault
ALL15Fan check cable disconnected
ALL18Condensate level fault
ALL28Maximum number of consecutive releases
ALL37Fault due to low network voltage
ALL40Incorrect network frequency detected
ALL41Flame loss more than 6 consecutive times
ALL42Button fault
ALL43Open Therm communication fault
ALL62Self-calibrating procedure is required
ALL72Incorrect positioning of the delivery sensor
ALL81Block due combustion during start-up
ALL83Irregular combustion (temporary error)
ALL96Block due to clogging in smoke outlet
23
3.6 Display of operating data and counters
Once the boiler is operating a qualified technician can view the
operating data and the counters as follows:
– from the operating screen in the mode enabled at that
moment (WINTER
– go into
same time
“DISPLAY”
for more than 3 seconds until the following screen
appears
From this point, the technician has 2 options:
– scroll through the list of
(PARc)”
by pressing the button t. Scrolling will be in sequence
– display the
the button
“activated alarms”
r
or SUMMER l)
n
by pressing the buttons r and <
“information (PAR)”
and
“counters
(no more than 10) by pressing
at the
TABLE OF INFORMATION DISPLAYED
TypeNr.Description
PAR00SW version
PAR01External sensor
PAR02
PAR03Smoke probe
PAR04
PAR05AUX auxiliary sensor
PAR06
PAR07Power level
PAR08Flow meter rate
PAR09
PAR10
Delivery sensor
temperature
Domestic hot water
sensor temperature
Actual heating SET
temperature
Water pressure
transducer reading
Display of current
fan revolutions
TABLE OF COUNTER DISPLAYED
TypeNr.Description
PARc0
PARc1
PARc2
PARc3total no. faults
PARc4
PARc5
PARc6
total no. of boiler
operating hours
total no. of burner
operating hours
total no. of burner
ignitions
total no. of times
installer parameters
"ALL"accessed
total no. of times
OEM parameters
accessed
time unitl next
maintenance
intervention
Range
- 9 ..
99
- 9 ..
99
- 9 ..
99
- 9 ..
99
- 9 ..
99
Pa r.
13 …
Pa r.
14
0 ..
99
0 ..
99
0 ..
99
0 ..
RPM x 1001
99
Range
0 ..
h x 1000
99
0 ..
h x 1000
99
0 ..
h x 1000
99
0 ..
99
0 ..
99
0 ..
99
1 ..
months1
199
U/MStep
°C1
°C1
°C1
°C1
°C1
°C1
%1
l/min0.1
bar0.1
U/MStep
0.1; from
0.0 to 9.9;
1; from 10
to 99
0.1; from
0.0 to 9.9;
1; from 10
to 99
0.1; from
0.0 to 9.9;
1; from 10
to 99
x 11
x 11
x 11
– Once in this section, proceed with button t or r.
When all the values have been displayed, exit the menu by
pressing and holding down the button yfor approximately 5
seconds until the initial screen is displayed.
24
TABLE OF ACTIVATED ALARMS/FAULTS
TypeNr.Description
PARA0Last activated alarm/fault
PARA1Last but one activated alarm/fault
PARA2Third from last activated alarm/fault
PARA3Previous activated alarm/fault
PARA4Previous activated alarm/fault
PARA5Previous activated alarm/fault
PARA6Previous activated alarm/fault
PARA7Previous activated alarm/fault
PARA8Previous activated alarm/fault
PARA9Previous activated alarm/fault
3.7 Checks
3
3.7.1 Chimney sweep function
The chimney sweep function is used by the qualified
maintenance technician to check the mains gas pressure, detect
the combustion parameters and to measure the combustion
efficiency required by legislation in force.
This function lasts 15 minutes and is activated by proceeding
as follows:
– if the panel (2) has not already been removed, remove the
two screws (1), pull the front panel (2) forwards and release it
from the top by lifting it
6
Fig. 35
2
1
Fig. 33
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
4
b
a
5
– open the gas valve
– power the boiler by setting the main switch to "ON"
ON
Fig. 36
– press the button y for at least 1 second until "SUMMER"
mode
– press and hold down the buttons
for approximately 10 seconds until the message “Hi” appears
on the display together with the flashing symbols
– press the button > to make the boiler operate at maximum
power "Hi" and check that the mains gas pressure value on the
pressure gauge is correct. Take a reading of the combustion
data and measure the combustion efficiency.
– press the button
power "Lo". The message
together with the flashing symbols
has been selected
l
<
and > at the same time
<
and
l
to make the boiler operate at minimum
“Lo”
will appear on the display
and
l
n
n
Fig. 34
– close the gas valve
– loosen the screw of the "mains pressure" point (6) and connect
a pressure gauge
25
– take the combustion data reading
– press the button
The boiler water delivery temperature will appear on the
display
– disconnect the pressure gauge, carefully close the pressure
point (6), put the control panel back to the original position
and refit the front panel (2).
Gas supply pressure
Type of gasG20G31
Pressure (mbar)2037
to exit the "Chimney sweep Procedure”.
y
3.9 Gas conversion
ADAX
models can work with G20 or G31 without the need for
any mechanical conversion. Simply select parameter
(see "Parameter setting and display") and set the type of gas
to be used.
If changing the type of gas to be used, carry out the entire
appliance
“COMMISSIONING”
phase.
”PAR 03”
3.8 Domestic hot water comfort function
(preheating)
ADAX
models have a "domestic hot water comfort" function
which ensures the best performance in terms of domestic hot
water, reducing the time necessary for the hot water to become
available and ensuring that the temperature is stable.
To activate the function:
– select parameter
display") and set it to
– exit parameter settings and press button > for approximately
5 seconds until the symbol
and begins to flash indicating that the function has been
activated.
To deactivate the function:
– press button
symbols
indicating that the function has been deactivated.
r
”PAR 22”
again for approximately 5 seconds until the
>
and R appear on the display and begin to flash
(see "Parameter setting and
a 1
and R appears on the display
r
26
4 MAINTENANCE
OFF
4.1 Adjustments
For the appliance to operate correctly and efficiently it is
recommended that the User calls upon the services of a
Professionally Qualified Technician to carry out
maintenance.
m
a
CAUTION
The maintenance interventions described must ONLY
be carried out the professionally qualified personnel.
DANGER
Before carrying out any interventions described:
– set the main system switch to "OFF"
– close the gas valve
– make sure that no hot parts inside the appliance are
touched.
ANNUAL
Fig. 37
4.3 Cleaning the inside of the appliance
4.3.1 Removing components
To access the internal parts of the boiler:
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it
2
4.2 External cleaning
4.2.1 Cleaning the cladding
When cleaning the cladding, use a cloth dampened with soap
and water or alcohol for stubborn marks.
d
IT IS FORBIDDEN
to use abrasive products.
1
Fig. 38
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
4
b
3
a
5
Fig. 39
27
– loosen the clips (6) and extract the air inlet pipe (7)
6
10
6
7
8
– unscrew the swivel joint (8)
– extract the connectors (9) from the fan and disconnect the
electrode cable (10)
m
CAUTION
Work carefully when removing the assembly (13) to
prevent any damage occurring to the internal insulation
of the combustion chamber and the door seal.
4.3.2 Cleaning the burner and the combustion
chamber
The combustion chamber and the burner do not require any
particular maintenance. Simply brush them with a soft brush.
4.3.3 Checking the ignition/detection electrode
Check the state of the ignition/detection electrode and replace
if necessary. Check the measurements as per the drawing
whether the ignition/detection electrode is replaced or not.
+0,5
6
+0,5
-0,5
4,5
-0,5
9
Fig. 40
– Unscrew the four nuts (11) securing the combustion chamber
door (12)
– pull the fan-sleeve-door assembly (13) forwards and remove
it.
12
11
Fig. 42
4.3.4 Final operations
After having cleaned the combustion chamber and the burner:
– remove any carbon residue
– check that the seal and the insulation of the door (12) to the
combustion chamber are integral. Replace if necessary
– refit the assembly by carrying out the same operations for
removal but in the reverse order and tighten the screws (11)
of the door to the combustion chamber
– reconnect the connections to the fan and the electrode.
4.4 Checks
4.4.1 Checking the smoke duct
It is recommended that the user checks that the combustion air
inlet duct and smoke outlet duct are integral and airtight.
4.4.2 Checking the expansion vessel pressure
It is recommended that the expansion vessel on the water side
is drained and that the prefilling pressure is not less than
If this is not the case, pressurize it to the correct value (see
sectionExpansion tank".
Once the checks described above have been completed:
– refill the boiler as described in section "REFILL operations"
– check that the siphon has been filled correctly
– activate the "Chimney sweep function" and carry out a smoke
analysis and/or measure the combustion efficiency
– refit the front panel securing it with the two screws which
were removed previously.
1 bar
.
11
13
28
Fig. 41
4.5 Unscheduled maintenance
If replacing the
parameters as indicated in the table.
Type
Nr. Description
PAR01
PAR02
PAR03
To enter "Parameter setting and display"refer to the indications
provided in the specific section.
Once the parameters in the table have been set, you must carry
out the entire phase of "Self-calibrating procedure" described
in the specific section.
gas cock
If the
burner
, and/or the
the entire phase of "Self-calibrating procedure" described in
the specific section.
electronic board
Index showing boiler power in kW
1 = 20; 2 = 25; 3 = 30; 4 = 35
Hydraulic configuration
0 = rapid
1 = storage tank with thermostat or
heating only
2 = hot water tank with sensor
3 = two programmer
4=instant with solar power input
5 = open vent
Gas Type Configuration
0 = G20; 1 = G31
and/or the
ignition/detection electrode
fan
are replaced, the user must still carry out
, the user MUST set the
Setting for
20253035
1234
ADAX
0
0 or 1
, and/or the
4.6 Troubleshooting
LIST OF MALFUNCTION/FAULT ALARMS
TypeNr.FaultSolution
ALL02
ALL03
ALL04
ALL05Delivery sensor fault
ALL06No flame detection
ALL07
ALL08
Low water pressure in
system
High water pressure in
system
Domestic hot water
sensor fault
Sensor or safety
thermostat intervenes
Fault in the flame
detection circuit
- Restore pressure
- Check for any leaks in
the system
- Empty the system via
the drain valve on the
hydraulic assembly and
bring the pressure to
approximately 1.2 bar
- Check connections
- Replace the sensor
- Check connections
- Replace the sensor
- Check the integrity of
the electrode and check
that it is not grounded
- Check gas availability
and pressure
- Check the integrity of
the gas valve and the
card
- Check the sensor or
thermostat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or
the thermostat
- Check that the pump
impeller is not blocked
- Check the integrity of
the electrode and check
that it is not grounded
- Check gas availability
and pressure
- Check the integrity of
the gas valve and the
card
TypeNr.FaultSolution
- Check the rotation
ALL09
ALL10Auxiliary sensor fault
ALL11
ALL12
ALL13
ALL14Smoke probe fault
ALL15
ALL18Condensate level fault
ALL28
ALL37
ALL40
ALL41
ALL42Button fault
ALL43
ALL62
ALL72
ALL81
ALL83
ALL96
--
--
No water circulating in
the system
Gas valve modulator
disconnected
Incorrect configuration
of the open /sealed
chamber
Flue gas thermostat
tripped
Fan check cable
disconnected
Maximum number of
consecutive resets
reached
Fault due to low network
voltage.
Incorrect network
frequency detected
Flame loss more than 6
consecutive times
Open Therm
communication fault
Self-calibrating
procedure is required
Incorrect positioning of
the delivery sensor
Block due to combustion
during start-up
Irregular combustion
(temporary error)
Block due to clogging in
smoke outlet
Frequent relief valve
intervention
Limited production of
domestic hot water
of the system pump
impeller
- Check the electrical
connections
- Replace the pump
- Check PAR
02 "hydraulic
configuration"
- Check the electrical
connection
- Check the electrical
connection
- Set the parameter
PAR 04 (Combustion
configuration) to 0
- Replace the smoke
probe
- Contact the Technical
Assistance Centre
- Replace the smoke
probe
- Check the electrical
connection of the
smoke probe, if the
problem is not resolved,
contact the Assistance
Centre
- Check the connection
cable between the fan
and the board
- Check for any clogging
in the pipe which takes
the condensate to the
siphon
- Check that the siphon
is not clogged
- Contact the Technical
Assistance Centre
- Check with tester
- Contact network
provider (ENEL)
- Contact network
provider (ENEL)
- Check the detection
electrode
- Check the gas supply
(open valve)
- Check mains gas
pressure
- Check that buttons are
working
- Check the electrical
connection of the
remote control
- Carry out the selfcalibrating procedure
(see the specific
section)
- Check that the delivery
sensor is attached to
the delivery pipe
- Check for blockage in
chimney
- Bleed the air from the
gas circuit
- Check for blockage in
chimney
- Check for blockage in
chimney
- Check circuit pressure
- Check expansion vessel
- Check the diverter valve
- Check that plate heat
exchanger is clean
- Check domestic hot
water circuit valve
29
4.7 Any pump faults and possible solutions
LED colourPump statusFaultPossible solution
"Transient safety shutdown"; Anomaly
Red-Green
flashing
Flashing red"Permanent safety shutdown"
LED offStationary
After eliminating the anomaly, the pump
in progress
restarts automatically
Network voltage too high or too low;
(160V > Vn > 280V)
Motor overload; rotor friction or blockage
due to the presence of debris
Excessive speed; the pump rotor is
actuated by an external factor and is
rotating at a speed exceeding the maximum
permitted speed
Overcurrent; stator winding is in short
circuit due to water
The temperature inside the motor is too
high
The pump is obstructed by an external flow
(> 1200l/h) in the opposite direction
Pump blocked due to debris in the system
Fault in the electronic board and/or the
motor
No electrical power- Check the electrical power connection
LED faulty- Check if the pump can operate
Electronic board faulty- REPLACE THE PUMP
- Check network voltage
- Check the characteristics of the system
water; clean the system of any debris
- Check that there is no external flow in the
system (no other pump in operation)
- Check for leaks in the system
- Check the water temperature in relation
to ambient temperature
- Eliminate or reduce the external flow (<
1200l/h)
- Remove and reconnect the electrical
power supply (OFF - ON)