AIC NESTA CHROME 150 Manual

heatingsystems
EN
installation
and maintenance
manual
FOR THE INSTALLER AND THE USER
150 kW
WALL — HUNG CONDENSING BOILER
F-084392 • B
NESTA CHROME

G-2 F-084392_EN • B
Table of ConTenTs
General InformatIon ................................G-4
Liabilities of the Manufacturer, the Installer
and the End user ..............................................G-4
About this Manual ............................................G-5
Safety Instructions ...........................................G-6
Package Contents ...........................................G-7
Boiler Marking ..................................................G-7
Product descrIPtIon ...............................G-8
NESTA CHROME 150.......................................G-8
General Description .................................................G-8
Frost Protection .......................................................G-8
Safety Devices .........................................................G-8
Optional equipment .................................................G-8
Control Panel and Main Functions.................G-10
Symbols and Messages on the Control Panel ...G-11
technIcal sPecIfIcatIons ........................G-12
Dimensions and Clearances...........................G-12
Performance and Eciency Data...................G-14
ErP Data .........................................................G-14
Combustion and Gas Data.............................G-15
Electrical Data ................................................G-15
Hydraulic Data................................................G-16
Pressure Drop Curve ......................................G-16
Flow Rate .......................................................G-16
InstructIons for the user......................u-17
Safety Instructions for the User......................U-17
Disposal of the Product at the End of Service Life .U-18
Periodic checks .............................................U-18
Starting the Appliance....................................U-19
Stopping the Appliance..................................U-19
What to Do if... ...............................................U-19
Operating the Controller - End User Level .....U-20
Basic Settings ................................................U-23
Product InstallatIon .............................. I-25
Safety Instructions for the Installation............. I-25
Handling the Product ...................................... I-26
Unpacking the Product ................................... I-26
Installing and Preparing the Boiler .................. I-26
Installing the Wall Bracket ............................... I-26
Installing and Removing the Condensate Trap .. I-27
Removing and Installing the Access Panels ... I-28
Requirements for the Hydraulic Connections .... I-29
Water Quality Requirements to Prevent
Scaling and Corrosion..................................... I-30
Typical Hydraulic Connections - Heating Circuit.. I-31
Hydraulic Connections - Cascaded boilers,
with External Domestic Hot Water Tank and
Plate Heat Exchanger...................................... I-32
Hydraulic Connections - Cascaded boilers,
with External Domestic Hot Water Tank and
Low Loss Header ............................................ I-33
Safety Instructions for the Gas Connection .... I-34
Safety Instructions for the Chimney Connections . I-35
General Instructions for the Installation of
AIC-approved Chimney Components............. I-36
Chimney Connection....................................... I-37
AIC-Approved Chimney Components............. I-40
Engineering the Chimney System ................... I-41
Accessories ..................................................... I-41
Calculation of the Chimney Length ................. I-41
Equivalent Length of Chimney Components ............I-41
Maximum Chimney Length (terminals incl.)...............I-41
Safety Instructions for the Electrical
Connections .................................................... I-43
Cables ............................................................. I-43
Routing the Cables.......................................... I-43
Accessing the Terminal Strip and Electronic
Board............................................................... I-44
Wiring Diagram................................................ I-46
commIssIonInG ........................................ I-48
Safety Instructions Before Start-up................. I-48
Filling the System ............................................ I-48
Start-up and Commissioning .......................... I-49
Combustion Adjustments................................ I-49
Commissioning Wizard.................................... I-50
General Structure of the Commissioning Wizard ......I-51
maIntenance........................................... I-54
Safety Instructions for Maintenance ............... I-54
Maintenance Requirements ............................ I-55
Shutting Down for Maintenance...................... I-56
Draining the Boiler........................................... I-56
Restarting after Maintenance .......................... I-56
Removing and Installing the Ignition and
Ionisation Electrodes....................................... I-57
Removing and Installing the Fan and Air-Gas
Mixer Assembly............................................... I-58
Removing and Installing the Burner ................ I-60
Checking and Cleaning the Combustion
Chamber.......................................................... I-62
Checking the Flue Pressure Switch operation ... I-62
addItIonal InformatIon for the Installer.. I-63
Optional Modules ............................................ I-63
Extension Modules & Cable Hub..............................I-63
Web Server Module .................................................I-63
Cascading module (standard) ..................................I-63
Boilers in a Cascade System .......................... I-64
Boiler Settings for the Installer ........................ I-66
Access Levels..........................................................I-66
Menus and Settings .................................................I-66
Structure of Menus for the Installer................. I-67
Error Codes and Solutions .............................. I-70
Maintenance Messages .................................. I-75
Troubleshooting............................................... I-76
Installation Checklist ....................................... I-78
Combustion Parameters - Log Sheet.............. I-81
Water Parameters - Log Sheet........................ I-82
declaratIon of conformIty ..................... I-83

G-3
F-084392_EN • B
Index of IllustratIons
Fig. 1. Data Plate - Typical ................................. G-7
Fig. 2. Boiler Components ................................. G-9
Fig. 3. Control Panel ........................................ G-10
Fig. 4. Typical Display ...................................... G-11
Fig. 5. Single Boiler Clearances ....................... G-12
Fig. 6. Clearances for Cascaded Boilers ......... G-12
Fig. 7. Wall bracket Installation ..........................I-26
Fig. 8. Condensate Trap Installation ..................I-27
Fig. 9. Removing/Installing the Access Panels ..I-28
Fig. 10. Typical Heating System...........................I-31
Fig. 11. Cascaded Boilers, with External
Domestic Hot Water Tank and Plate
Heat Exchanger.......................................I-32
Fig. 12. Cascaded Boilers, with External
Domestic Hot Water Tank and Low
Loss Header............................................I-33
FIG. 13. NESTA CHROME Gas Valve ...................I-34
Fig. 14. Routing the Electrical Cables..................I-43
Fig. 15. Accessing the High and Low Voltage
Terminal Strips and Electronic Board......I-45
Fig. 16. Filling the System - Typical .....................I-48
Fig. 17. Combustion Adjustment on Gas Valve ...I-49
Fig. 18. Draining the Boiler - Typical ....................I-56
Fig. 19. Removing and Installing the Electrodes..I-57
Fig. 20. Removing and Installing the Fan and
Air-Gas Mixer Assembly..........................I-59
Fig. 21. Removing and Installing the Burner........I-61
Fig. 22. Cleaning the Combustion Chamber........I-62
Fig. 23. Testing the Flue Pressure Switch ............I-62
Fig. 24. Extension Modules and Cable Hub ........I-63
Fig. 25. Cascading Module ..................................I-63
Fig. 26. Web Server Module.................................I-63
Fig. 27. Principles of Cascade .............................I-64
Fig. 28. Cascading Module ..................................I-64
Fig. 29. Cascade System with Plate Heat
Exchanger / Low Loss Header................I-65

G-4 F-084392_EN • B
Liabilities of the Manufacturer, the Installer
and the End user
General InformatIon
Manufacturer
Our products are manufactured in compliance
with the requirements of the applicable Europe-
an Directives and standards, and are therefore
delivered with all the required documentation
and markings.
The quality of our products is essential to
us, and we aim therefore at improving them
continually. To this end, we reserve the right
to change the technical characteristics and
features of our products without prior notice.
Please check for the latest revision of the man-
ual on our website (www.myaic.eu).
The manufacturer shall not be held liable for
any malfunction of the product resulting from:
The failure to comply with the safety
and installation instructions provided
herein,
The failure to comply with the safety
and operation instructions and recom-
mendations provided herein,
The failure to have the appliance main-
tained regularly,
A modifi cation of the appliance that is
not approved by the manufacturer,
The use the product for any other pur-
pose than its intended use,
The use of components and accesso-
ries that are not approved by the man-
ufacturer.
Installer
The installer is responsible for the correct in-
stallation, conversion (as required) and com-
missioning of the appliance according to:
The instructions and recommendations
provided herein
The applicable regulations and standards
The installer shall provide the end-user with:
Any relevant explanation about the op-
eration of the appliance and the heat-
ing system as well as the safety devices
that are provided,
Any instruction regarding periodic
checks to be performed and possible
anomaly to be reported
All the documentation delivered with
the appliance and installed accessories.
The installer shall also inform the end-user of
the necessity to have the appliance checked
and maintained regularly by a qualifi ed profes-
sional.
End-user
To ensure the best performances and safety of
the appliance, the end-user shall:
Make sure that the appliance is in-
stalled, converted (as required), com-
missioned and adjusted by a qualifi ed
professional,
Make sure that the appliance is checked
and maintained regularly by a qualifi ed
professional,
Comply with all the instructions and rec-
ommendations provided in the appliance
documentation,
Make sure to receive from the installer
all the necessary explanations related
to the operation of the appliance and
the safety devices,
Make sure to receive from the installer
all the appliance and accessories doc-
umentation,
Keep all the appliance documentation
in a safe place for future use.
The end-user shall use the product for its in-
tended use.
Should the installer or the end user not comply with the instructions and require-
ments stated in this manual, the warranty will be void.
For more information on the warranty terms and conditions, please connect to
our website: www.myaic.eu.
i

G-5
F-084392_EN • B
General InformatIon
About this Manual
For an explanation of the symbols on the control
panel, please see “Symbols and Messages on
the Control Panel” on page G-11.
The prexes used in the page number-
ing indicate the following:
G- : General information
U- : Pages intended for the end user
I- : Pages intended exclusively for the
qualied professional (e.g. installer)
i
This documentation is part of the product. It will be handed over to the end-user who will keep it,
with all the other applicable documents, in a safe place and readily available for use.
Before installing, operating or maintaining the appliance, please carefully read this manual and all
the applicable documents provided with the components and accessories. They contain essen-
tial safety information.
Symbols in this Manual Symbols on the Appliance
Symbols on the Packaging
Indicates an essential instruction
which, if not followed, can result
in a hazardous situation that can
cause serious damage to equip-
ment and/or injuries or death.
Indicates an important instruction
which, if not followed, could re-
sult in a hazardous situation that
could cause damage to equip-
ment and/or injuries.
Indicates an essential instruction
in relation with the presence of
electrical power and a danger of
electrical shock.
The appliance must be started/
stopped using the ON/OFF switch
installed on the appliance.
ON OFF
The electrical supply to the appli-
ance must be activated/deactivated
through the external circuit breaker
or the power supply cable must be
connected/disconnected.
The gas supply to the appliance must
be provided/shut down through the
external gas tap.
The water circuit of the appliance
must be full of water/empty.
The front and top access panel(s) of the
appliance must be removed/installed.
This side up
Keep dry
Fragile
Do not stack
The appliance must have cooled down.
Indicates an important piece of
information.
i
i
Gas connection.
Ground / Earth.
Heating circuit supply connection.
Heating circuit return connection.
Heating circuit connection.
High Voltage - danger of electric shock.
Gas connection.

G-6 F-084392_EN • B
General InformatIon
Safety Instructions
IF YOU SMELL GAS:
→DO NOT:
Use an open fl ame
Smoke
Use electrical devices (phones,
doorbell, etc.) or switches
→DO:
Close the gas supply
Open all doors and windows to
ventilate the room
Inform the neighbours of the danger
by knocking at the doors.
Get out of the building
Call the gas company
This product is intended as a heat
generator for heating systems.
This appliance must be installed ac-
cording to the applicable local regula-
tions and standards.
This appliance can be used by chil-
dren who are at least 8 years old and
by persons with reduced physical,
sensory or mental capabilities or lack
of experience and knowledge, provid-
ed that they are under supervision or
have been given instructions concern-
ing the use of the appliance in a safe
way and that they understand the haz-
ards involved.
Cleaning and user maintenance shall
not be performed by children without
supervision. Children shall not play
with the appliance.
Any modifi cation to the appliance and
its components is strictly forbidden
without the prior written consent of the
manufacturer.
If components need to be replaced,
only genuine factory parts or compo-
nents approved by the manufacturer
must be used.
When working on the appli-
ance and the system, make
sure to use the appropriate
tools to avoid damaging the
pipes and components.
If works need to be performed close to
the appliance (e.g. in the boiler room
or close to the air inlets), make sure
to shut down the appliance to prevent
dust from entering and accumulating
in the appliance.
The appliance contains a frost-protec-
tion feature that will protect the appli-
ance against frost, provided that the
appliance remains in operation and the
radiator valves are open.
When unpacking the appli-
ance, check the integrity and
condition of the packaging
and that all the components
and accessories described
in the packing list are pres-
ent. Contact your supplier in
case of problem.
When discarding the packaging, do not
contaminate the environment. Dispose of
it according to the applicable local regu-
lations on recycling.
i

Fig. 1. Data Plate - Typical
N 150 WH
EN 15502-1/EN 15502-2-1
230V / 50Hz
Year built:
1015 19
2020
MASTER: SLAVE:
Heat Input
Useful Output at [80°C/60°C]
Useful Output at [50°C/30°C]
Q Min.[kW]:
P Min.[kW]:
P Min.[kW]:
QNom.[kW]:
PNom.[kW]:
PNom.[kW]:
NestaChrome
MODEL:
PIN:
Serial no. :
Standards:
Power Supply:
Power Consumption:
IP Class:
Max. Working Pressure [PMS]:
Max. Working Temperature:
Flue appliance type:
NOxClass:
Wall-Hung Condensing Boiler Type: Range rated condensing boiler
kW 150
heatingsyst e m s
AIC Europe B.V.
Graafschap Hornelaan 163A
NL-6001 AC Weert
The Netherlands
The boiler shall be installed byaqualifiedinstallerinaccordancewith
providedinstallationand maintenancetechnicalmanual,nationaland
local requirements, gas safety regulations and relevant standards.
Please read installation and
maintenance manual before
installing the boiler.
The boiler is pre-adjusted in
the factory to the gas pressure
of 20mbar for gas type G20.
Gas appliance
category Gas type Gas appliance
pressure Country of destination
EXAMPLE
G-7
F-084392_EN • B
General InformatIon
Package Contents
îA NESTA CHROME boiler
îAn Installation and Maintenance manual
îA bracket and hardware for wall installation
îA condensate trap (syphon), to be installed
Refer to “Unpacking the Product” on page I-26
for the complete unpacking and installation in-
structions.
Boiler Marking
The data plate is located at the bottom of the boiler.
In addition, the S/N and appliance type are also
available on a sticker placed inside the front face
ap to make the information easily available if tech-
nical support is needed.

G-8 F-084392_EN • B
NESTA CHROME 150
General Description
This wall-hung series of NESTA CHROME boilers
consists of compact, low-emission condensing
appliances with a pre-mix burner, a stainless steel
heat exchanger and a lightweight casing.
The fully radial burner ensures a high modulation ra-
tio, combustion stability and very low NOx emissions.
The unique and proven “re-tube” heat exchanger
oers a large heat exchange surface to optimise
energy and heating eciency.
The NESTA CHROME series is designed for heat-
ing systems and can be used for Domestic Hot
Water production (provided that the system con-
tains an optional external tank).
The appliances are built for natural gas but can be
converted to operate with liqueed gas (propane),
using an optional conversion kit. The optional kit
installation must take place before commissioning
and comply with applicable local regulations and
standards.
NESTA CHROME boilers are able to control 3 heat-
ing circuits with mixing functions, through 3 option-
al extension modules. Each extension module re-
quires a power supply and a bus connection. Refer
to “Optional Modules” on page I-63 for more
information.
The appliance is not provided with a built-in cir-
culating pump. Therefore, the system must be
equipped with at least one pump for standard sys-
tem set up.
NESTA CHROME boilers can be connected in a
cascade conguration, which means that the boil-
ers are connected to the same water circuit and
electronic controller, with one boiler operating as
the master, and the others as “slaves”). Refer to
“Boilers in a Cascade System” on page I-64 for
more information on cascade system possibilities.
Frost Protection
The NESTA CHROME boilers have a built-in an-
ti-frost protection. The pump and the burner are
started as required when the return water temper-
ature drops below 5°C (as measured by the boiler
internal sensor installed on the return circuit).
Product descrIPtIon
The pump and/or burner will turn o when the re-
turn temperature reaches the required setpoint.
The anti-frost protection function only protects the
boiler, not the entire system.
Safety Devices
The NESTA CHROME boilers are equipped with a
series of sensors and switches that provide safety
for your appliance and heating system, such as:
îWater circuit temperature sensors (supply, re-
turn, system, etc.)
îGas pressure switch
îFlue pressure switch
îWater pressure sensor
îFlue temperature sensor
îAlarm contacts
The NESTA CHROME boilers are not provided with
the following mandatory safety equipment that the
installer must place in the system:
îExpansion tank, suitable for the system size
îSafety group, composed of a safety valve (pres-
sure rating adapted to the system), an automat-
ic relief valve and a manometer
îAir relief valve(s), at the high point(s) of the system
Optional equipment
Some optional equipment can be used with the
NESTA CHROME boilers. Please contact your AIC
representative for more information and a list of
available equipment.
To lengthen the life of your boiler and heating sys-
tem, in addition to the recommended water char-
acteristics described in “Water Quality Require-
ments to Prevent Scaling and Corrosion” on
page I-30, the following equipment can be in-
stalled in the heating circuit:
îWater lter / air separator
îDirt separator
îLow loss header
îPlate heat exchanger
See “Requirements for the Hydraulic Connec-
tions” on page I-29 for more information on this
equipment.

1
2
3
4
8
10
912
11
7
5
13
14
20
16
15
17
18
22
21
24
23
19
6
G-9
F-084392_EN • B
Product descriPtion
1. Concentric chimney connection (Ø 100/150 mm)
2. Air inlet to air-gas mixer
3. Stainless steel “re tube” heat exchanger
4. Gas pressure switch
5. Flue temperature sensor
6. Flue pressure switch
7. Stainless steel condens dish
8. Gas pipe
9. Heating return tube, with temperature sensor
10. Condensate trap (ball syphon)
11. Water pressure sensor
12. On-O switch
13. Control panel with LCD display
14. Electronic junction box (with main board - not shown)
15. Optional electronic box (for optional extension modules)
16. Heating supply tube
17. Supply temperature sensor
18. Flame sight glass
19. Ignition electrode
20. Air vent
21. Ionisation electrode
22. Gas valve, with throttle for combustion adjustment
23. Burner assembly, with fan and air-gas mixer
24. Ignition module
KEY
Fig. 2. Boiler Components

Fig. 3. Control Panel
12
3
30.12.2019 14:42
Flow temp 35°C
Return temp 32°C
Outside temp 18°C
DHW temp 55°C
System Automac
G-10 F-084392_EN • B
Product descriPtion
Control Panel and Main Functions
1. LCD Display - The display illuminates whenev-
er the rotary selector is rotated or depressed,
and remains on for 8 minutes. For a detail of
the symbols and messages displayed on the
screen, see “Symbols and Messages on the
Control Panel” on page G-11.
2. Removable panel - To access the USB con-
nector and Reset button located underneath
(showed in light grey on the picture, for infor-
mation).
3. Rotary selector - It can be used in 3 dierent
ways:
îTurning the selector to the left or to the right
allows to scroll through the menus (icons/
functions) or increase/decrease a value af-
ter selecting a function.
KEY When entering a menu/sub-menu, the
slow rotation of the selector to the right
(clockwise) allows to scroll through the
menu, down to the last function. Turning
the selector to the left (counter-clock-
wise) allows to scroll up to the rst func-
tion of the menu.
îDepressing the selector (short push) allows
to select a function/value and validate a
choice.
îDepressing the selector for more than 3 sec.
when an error is displayed on the screen,
takes you back to the Home screen. Doing
the same in Expert menus brings back to
the Expert view start page.
For more information on the operation and menus of
the controller, see “Symbols and Messages on the
Control Panel” on page G-11.
i

G-11
F-084392_EN • B
Product descriPtion
Fig. 4. Typical Display
30.12.2019 14:42
Flow temp 35°C
Return temp 32°C
Outside temp 18°C
DHW temp 55°C
System Automac
2
1
3
4
5
Symbols and Messages on the Control
Panel
The control panel display is divided into several
zones (See Fig. 4):
îa vertical menu bar (1) on the left side of the
screen, comprising a series of icons to access
various menus. When one of the icon is select-
ed and active, it displays against a black back-
ground (2). When one icon is selected and ac-
tivated by pressing the selector, the menu bar
disappears and gives way to the work area.
îa horizontal status bar (3) at the top of the
screen. It permanently displays the time and,
according to the situation, specic icons (Alarm,
Maintenance, Event, Manual adjustment, User
level and Producer in operation). See a detail of
the symbols below.
îa work area (4), comprising menu and func-
tion-specic information as well as operating
mode. It also displays a back arrow (5), allow-
ing to exit the work area and go back to the
vertical menu bar.
Service/settings. Gives access to setting op-
tions on device or system, allows to operate
special operations (e.g. for maintenance work)
and allows to log in, in expert view (access to
additional pages for the Installer only).
Diagnostics (Expert only). Analyze and test
info on the system.
Adjust/repair (Expert only). Allows to adjust
the parameters in the ‘Complete parameter
list’, and to access the commissioning wizard.
Symbols appearing in the horizontal status bar:
Alarm. Indicates an error in the system.
Maintenance/Special operations. It indi-
cates the presence of a maintenance mes-
sage or special operation feedback.
Manual mode. Indicates that the operating
modes on the topic pages are set to manual.
User type. This symbol with number 1, 2 or
3 indicates the access level:
1 - End user/commissioning
2 - Heating engineer/installer
3 - OEM
Producer. This symbol indicates the main
producer (e.g. oil/gas boiler, heat pump) that
is currently switched on.
Symbols and indications In the work area:
abc Selected item (text or icon)
abc Activated item (text or icon)
Back To go back to higher level in the menu
To return to the vertical menu bar icons
Symbols used in the manual to illustrate the oper-
ation of the selector:
turn the selector to the left or to the right
depress shortly the rotary selector
depress the rotary selector for more than
3 seconds.
Symbols of the vertical menu bar (some of them
will appear only if the circuit is enabled):
Home. Gives access to the System status
and change it from automatic to off.
Temperature. Gives access to the heating
functions and setpoints.
Ventilation. Not used.
Domestic Hot Water. Gives access to the
DHW-related functions.
Information. Gives access to messages
(history, errors, etc.), system information and
consumption information.

Min. 400 mm
Min. 400 mm
Min. 40 mm Min. 40 mm
Fig. 5. Single Boiler Clearances Fig. 6. Clearances for Cascaded Boilers
40 mm 40 mm
G-12 F-084392_EN • B
technIcal sPecIfIcatIons
Dimensions and Clearances
Clearances Min. Recommended
top mm 400 1,000
bottom mm 400 700
front mm 700 1,000
sides mm 40*
* In a cascade conguration, boilers can be installed side-by-
side with a 40 mm clearance between them.
Wall bracket
location
550 mm
125 mm 114 mm
612 mm
645 mm
1,064 mm
980 mm

G-13
F-084392_EN • B
Technical SpecificaTionS
N 150 WH
dry weight kg 107
connections (Ø)
supply/return ( ) [M] in. 11/4
gas ( ) [M] in. 3/4
chimney mm 100/150
226 mm
354 mm
496 mm 490 mm
338 mm
346 mm
71 mm

G-14 F-084392_EN • B
Technical SpecificaTionS
boiler type and model N 150 WH
condensing boiler Y/N Y
low temp boiler Y/N Y
combination heater Y/N N
useful heat output
at 30% of rated heat output (P1)kW 41.0
at rated output and high-temp regime (P4)kW 137.1
useful eciency
at 30% of rated heat output (η1)%98.2
at rated output and high-temp regime (η4)%108.2
auxiliary electricity consumption
at full load (elmax) kW 0.30
at part load (elmin) kW 0.045
in standby mode (PSB)kW 0.003
standby heat loss (Pstby)kW 0.15
annual energy consumption for space heating kWh ―
sound power level indoors LWA dB 63
Electrical Data N 150 WH
supply voltage / frequency / current V / Hz / A 230 / 50 / 6
protection class IP X4D
ErP Data
Performance and Eciency Data N 150 WH
(min. - max.)
heat input (net) G20/G25 kW 12.0 - 141.0
G31 14.0 - 150.0
heat output at 80/60°C G20/G25 kW 11.8 - 137.1
G31 13.6 - 145.8
heat output at 50/30°C G20/G25 kW 13.0 - 151.3
G31 15.1 - 161.0
heating eciency 80/60°C G20/G25 %98.1 - 97.2
G31 98.1 - 97.2
heating eciency 50/30°C G20/G25 %108.0 - 107.3
G31 107.5 - 108.0
useful eciency at 30% (return at 30°C) %108.3
seasonal eciency %93.0

G-15
F-084392_EN • B
Technical SpecificaTionS
Combustion and Gas Data N 150 WH
(min. - max.)
chimney type(s) B23, B23P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x),
C93(x)
ue gas temperature at 80/60°C °C 60.0 - 74.9
ue gas temperature at 50/30°C °C 30.0 - 44.5
overheat ue gas temperature °C 110
max. ue gas pressure
(incl. max wind condition)
Pa 300
Max. chimney length (100/150) m16
mass ow rate of ue gases g/s 57.5
max. condensate volume kg/h 15.1
CO emissions mg/kWh 68.7
CO2contents (G20) (± 0.1) %8.2 - 9.0
CO2contents (G31) (LF± 0.2 / HF +0) %10.0 - 10.7
O2contents (G20) (± 0.15) %6.3 - 4.8
O2contents (G31) (LF± 0.3 / HF +0)%5,7 - 4,6
NOx level (weighted) mg/kWh 46.9
NOx class 6
gas type(s) G20 - G31
gas categories I2E, II2E3P, II2H3P
gas pressure
G20 (20 mbar) mbar 17 - 25
G31 (30/37/50 mbar) mbar 25.0-35.0 / 25.0-45.0 / 42.5-57.5
gas ow rate (G20)* m3/h 1.28 - 14.80
gas ow rate (G31)* m3/h 0.590 - 5.88
* 15°C, 1013.25 mbar, dry gas
-0.2
-0.3

G-16 F-084392_EN • B
Technical SpecificaTionS
Hydraulic Data N 150 WH
water content l28.3
pressure drop at ∆T = 20k mbar 120.0
minimum operating pressure bar 0.6
maximum operating pressure bar 6
maximum boiler temperature °C 85
Pressure Drop Curve
Flow Rate N 150 WH
minimum water ow rate at ∆T = 20k l/min 86
nominal water ow rate at ∆T = 20k l/min 98
00
20
40
60
80
100
120
140
160
200
0 10 20 30 40 50 60 70 80 90 100110120
Pressure drop [mbar]
water flow rate [l/min]
hydraulic pressure drop for the N 150 WH
130140

U-17
F-084392_EN • B
InstructIons for the user
Safety Instructions for the User
îThis appliance can be used by chil-
dren who are at least 8 years old and
by persons with reduced physical,
sensory or mental capabilities or lack
of experience and knowledge, provid-
ed that they are under supervision or
have been given instructions concern-
ing the use of the appliance in a safe
way and that they understand the haz-
ards involved.
îCleaning and user maintenance shall
not be performed by children without
supervision. Children shall not play
with the appliance.
îFor safety reasons, we recommend
that smoke and carbon monoxide de-
tectors are installed in the living areas
of your building according to the ap-
plicable local regulations.
îIf smoke is present, shut down the ap-
pliance, ventilate the room and exit the
building. Then call your installer to in-
vestigate and solve the problem.
îDo not store any  ammable, corrosive or
explosive products near the appliance.
îDo not modify or deactivate any compo-
nent, nor any safety device in the system.
îDo not operate the appliance when
the casing is open.
IF YOU SMELL GAS:
→DO NOT:
îUse an open  ame
îSmoke
îUse electrical devices (phones,
doorbells, etc.) or switches
→DO:
îClose the gas supply
îOpen all doors and windows to ven-
tilate the room
îInform your neighbours of the dan-
ger by knocking at the doors.
îGet out of the building
îCall your installer or gas company
îDo not modify or block the
condensate outlet(s).
îDo not open any sealed part
or component. Failure to
comply with this instruction
can result in damages and/
or injuries.
îThe sight glass can be very hot when
the appliance is in operation. Do not
touch the sight glass or its immediate
surroundings.
îMake sure that the appliance and the
heating system are prevented from
freezing.
îIn case of water leakage, disconnect
the appliance from the power supply
and gas source, turn off the water sup-
ply and call a quali ed professional.
îDo not modify any part of
the electrical system or ac-
cess internal components.
îDo not touch the appliance with any
wet body parts when the appliance is
supplied with electrical power.

U-18 F-084392_EN • B
InstructIons for the user
Disposal of the Product at the End of
Service Life
Periodic checks
îCheck regularly that the wa-
ter pressure of the system is
at least 1.2 bar when cold. If
not, top up the system with
water as instructed by the
installer at appliance instal-
lation or call your installer.
îIf a topping up of the system is required
to maintain the minimum recommend-
ed water pressure, always turn the ap-
pliance off and only add small quanti-
ties of water at a time. If a large amount
of cold water is added in a hot appli-
ance, the appliance can be damaged
permanently.
îIf the system needs to be topped up
regularly, there may be a leak in the
system. In that case, call your installer.
îCheck regularly that there is no water
below the appliance. If there is, call
your installer
îCheck regularly that there is no error
code displayed on the control panel
screen. Call your installer as required.
When cleaning the appliance
cabinet panels, do not use sol-
vents or aggressive/abrasive
cleaning agents. Wipe the sur-
faces using a soft clean cloth,
water and soap.
i
îIf works need to be per-
formed close to the appli-
ance (e.g. in the boiler room
or close to the air inlets),
make sure that the appli-
ance is shut down to pre-
vent the ingress and accu-
mulation of dust.
îIn case of abnormal noises in the sys-
tem or the appliance, please notify a
quali ed professional.
îAny setting of the appliance by the
end-user using the installer-speci c
functions, that would cause the ap-
pliance to malfunction, could result in
damages to the equipment. Only the
end-user settings described in this
manual are available to the end-user.
îIf a condensate neutralisation sys-
tem is installed, have it checked and
cleaned at least once a year.
Disposal of the Product at the End of
Service Life
At the end of service life, the product
should not be disposed of as solid
urban waste, but should be handed
over to a di erentiated waste collec-
tion centre.

U-19
F-084392_EN • B
InstructIons for the user
Starting the Appliance
The rst start-up of the boiler after its
installation must be performed by a
qualied professional, according to the
procedure in “Start-up and Commis-
sioning” on page I-49.
Conditions:
Procedure:
1. Make sure that the power supply cable is
connected to the boiler.
2. Press the On/O switch located on the right
side of the control panel.
When in the ON position, the switch
remains illuminated.
3. Select the heating mode as required.
4. Activate the DHW mode as required.
Follow-on tasks:
Check the pressure of the circuit in operation. It
should be between 1.2 and 6 bar (with pump on).
i
i
Stopping the Appliance
Conditions:
None
Procedure:
1. Press the On/O switch located on the right
side of the control panel.
When in the OFF position, the switch
internal light comes out.
2. To completely cut the power supply to the
boiler, either disconnect the power supply
cable from the boiler, or use the external cir-
cuit breaker.
Follow-on tasks:
None
i
What to Do if... Cause Action
Boiler does not start No power supply
1. Check that the power button is in ON position
(pushed in and illuminated).
2. Make sure the power supply is connected to the
mains.
3. Check the external power supply box (circuit break-
er) and reset it as required.
Error code 133 displayed Time out for ame ignition
1. Open controller removable panel and depress Reset
button. Refer to “Control Panel and Main Func-
tions” on page G-10 for more details.
2. If the fault appears several times, call your installer.
Error code 111 displayed Temperature limit switch
open
Check that radiator valves are open/that there is ow
across the boiler.
Error code 105 displayed
Maintenance message
Select the Information icon ( ) for details. Refer to
“Symbols and Messages on the Control Panel”
on page G-11.
Maintenance icon ( )
Error code 118 displayed Low water pressure Rell the heating system.
To remove an error code from the display temporarily and go back to the Home screen, de-
press the rotary selector for more than 3 seconds.
i

U-20 F-084392_EN • B
InstructIons for the user
Some icons and parameters are
only visible if the circuit is installed
and enabled.
i
Operating the Controller - End User Level
Icons In the work area
Selectable/
Adjustable
Parameters
Remark
Home Boiler temp: ---°C —
These items indicate the
current temperatures, as
detected by the system
sensors
Outside temp: ---°C —
DHW temp : --°C
ҘSystem Off
Automatic In the ‘O’ position, the plant
or zones are switched o.
Energy consumption is re-
duced to a minimum. The
building or zones remain,
however, protected (e.g. in
protection mode)
Temp.
setting
ҘOperating mode Protection
Automatic
Reduced
Comfort
“Protection” system op-
erates in frost protection
mode.
in Automatic, the system
is operated as per the time
switch program, or energy
savings functions (e.g. sum-
mer/winter mode).
Temporary temperature ad-
justment and time program
are available exclusively to
the Automatic operating
mode. Setting “...” disables
the function.
ҘTemporary Warmer
...
Cooler
ҘComfort setpoint 20°C
ҘTime program Monday
Tuesday
...
Sunday
Clock to be setup from
00:00 to 24:00 (default:
06:00 to 22:00). Up to 3
phases of heating per day
can be set per zone.
30.12.2019 14:42
Flow temp 35°C
Return temp 32°C
Outside temp 18°C
DHW temp 55°C
System Automac
To display the
information
through this
function, make
sure that at
least one heat-
ing circuit is
activated (Pgm
5710, “On”).
i