AIC TEXAS 99 Manual

EN
installation
and maintenance
manual
FOR THE INSTALLER AND THE USER
99 · 230 kW
FLOOR — STANDING CONDENSING STORAGE WATER HEATER
H-093630 • 00
TEXAS

G-2 H-093630_EN • 00
Table of ConTenTs
General InformatIon ...................................... G-3
Liabilities of the Manufacturer, the Installer and the
End user....................................................................G-3
About this Manual.....................................................G-4
Appliance Naming.....................................................G-5
Appliance Marking ....................................................G-5
Safety Instructions ....................................................G-6
Package Contents ...................................................G-7
Product descrIPtIon ..................................... G-8
TEXAS 99 - 230.........................................................G-8
General Description............................................................ G-8
Frost Protection.................................................................. G-8
Safety Devices ................................................................... G-8
Optional equipment............................................................ G-8
Control Panel and Main Functions..........................G-12
Symbols and Messages on the Control Panel .......G-13
technIcal sPecIfIcatIons .............................. G-14
Dimensions ............................................................G-14
Clearances ..............................................................G-15
Performance and Eciency Data ...........................G-16
ErP Data..................................................................G-16
Electrical Data.........................................................G-16
Hydraulic Data ........................................................G-16
Combustion Data....................................................G-17
Gas Data .................................................................G-18
InstructIons for the user............................ u-19
Safety Instructions for the User ..............................U-19
Disposal of the Product at the End of Service Life .U-20
Periodic checks .....................................................U-20
Starting the Appliance ............................................U-21
Stopping the Appliance ..........................................U-21
What to Do if... ........................................................ U-21
Operating the Controller - End User Level..............U-22
Basic Settings .........................................................U-24
Product InstallatIon ................................... u-26
Safety Instructions for the Installation ....................U-26
Unpacking the Product.............................................I-27
Handling the Product................................................I-27
Installing and Preparing the Appliance .....................I-28
Opening and Closing the Front Door and Access Panels . I-29
Inverting the Opening Side of the Front Door...........I-30
Requirements for the Hydraulic Circuits ...................I-31
Safety Instructions for the DHW Circuit....................I-34
Typical Hydraulic Connections - DHW Circuit ..........I-35
Safety Instructions for the Chimney Connections ....I-36
Chimney Connection ................................................I-38
Engineering the Chimney System.............................I-41
Accessories...............................................................I-41
Safety Instructions for the Gas Connection..............I-42
Gas Conversion ........................................................I-43
Preparing the Appliance for Gas Conversion ...................... I-44
Adjustment of Fan Speeds ................................................. I-45
Combustion Adjustment for Gas Conversion ....................... I-46
Safety Instructions for the Electrical
Connections..............................................................I-48
Cables.......................................................................I-48
Routing the Cables ...................................................I-48
Accessing the Electronic Board and Low and High
Voltage Terminal strips..............................................I-49
Wiring Diagram - TEXAS 99......................................I-50
Wiring Diagram - TEXAS 230....................................I-52
commIssIonInG ...............................................I-54
Safety Instructions Before Start-up ..........................I-54
Filling the Water Heater.............................................I-54
Start-up and Commissioning....................................I-55
Combustion Adjustment ...........................................I-55
Commissioning Wizard .............................................I-56
General Structure of the Commissioning Wizard................. I-57
maIntenance..................................................I-60
Safety Instructions for Maintenance .........................I-60
Maintenance Requirements ......................................I-61
Shutting Down for Maintenance ...............................I-62
Draining the Circuit ...................................................I-62
Restarting after Maintenance....................................I-62
Checking the Flue Gas (FPS) and Air (APS) Pressure
Switches operation ...................................................I-63
Removing, Cleaning and Installing the Condensate Trap ... I-64
Removing and Installing the Ignition and Ionisation
Electrodes .................................................................I-66
Removing and Installing the Fan, Venturi and Gas
Valve (TEXAS 99).......................................................I-68
Removing and Installing the Fan, Venturi and Gas
Valve Assembly (TEXAS 230) ....................................I-70
Removing and Installing the Burner..........................I-72
Removing and Installing the Burner Plate.................I-74
Checking and Cleaning the Combustion Chamber ..I-76
Checking the Scaling in the Appliance and Descaling I-77
Appliance Settings for the Installer ...........................I-78
Access Levels .................................................................... I-78
Menus and Settings ........................................................... I-78
Structure of Menus for the Installer ..........................I-79
Error Codes and Solutions........................................I-81
Troubleshooting ........................................................I-84
Maintenance Messages ............................................I-85
Installation Checklist .................................................I-86
Combustion Parameters - Log Sheet .......................I-89
Water Parameters - Log Sheet .................................I-90
declaratIon of conformIty ............................I-91
INDEX OF ILLUSTRATIONS
Fig. 1. Data Plate - Typical .............................................................. G-5
Fig. 2. TEXAS Water Heater Packaged for Transport.................... G-7
Fig. 3. TEXAS 99 - 230 Components - Front views ...................... G-9
Fig. 4. TEXAS 99 - Inner Components - Front & rear views........ G-10
Fig. 5. TEXAS 230 - Inner Components - Front & rear views ..... G-11
Fig. 6. Control Panel...................................................................... G-12
Fig. 7. Typical Display.................................................................... G-13
Fig. 8. Single Appliance Clearances - View from the Top ........... G-15
Fig. 9. Appliance Transport and Installation................................... I-27
Fig. 10. Installing the Air Inlet Silencer........................................................... I-28
Fig. 11. Opening and Closing the Access Door and Panels........... I-29
Fig. 12. Inverting the Door Opening Side......................................... I-30
Fig. 13. Typical DHW Circuit ............................................................. I-35
Fig. 14. TEXAS 99 Gas Valve ........................................................... I-42
Fig. 15. TEXAS 230 Gas Valve......................................................... I-42
Fig. 16. TEXAS 99 - Shutter Pre-adjustment for Propane............... I-44
Fig. 17. TEXAS 230 - Shutter Pre-adjustment for Propane ............ I-44
Fig. 18. Fan Speed Adjustment - Typical Screen ............................ I-45
Fig. 19. Combustion Adjustment - Control Panel............................ I-46
Fig. 20. Combustion Adjustment on Gas Valves ............................. I-47
Fig. 21. Routing the Electrical Cables .............................................. I-48
Fig. 22. Accessing the Electronic Board and High & Low voltage
Terminal Strips...................................................................... I-49
Fig. 23. Filling the Water Heater - Typical......................................... I-54
Fig. 24. Combustion Adjustment on Gas Valves ............................. I-55
Fig. 25. Draining the Appliance - Typical.......................................... I-62
Fig. 26. Testing the Air Pressure Switch and Flue Pressure SwitchI-63
Fig. 27. Cleaning the Condensate Pipe and Trap............................ I-65
Fig. 28. Removing and Installing the Electrodes ............................. I-67
Fig. 29. TEXAS 99 - Removing and Installing the Fan/Venturi
Assembly and Gas Valve ..................................................... I-69
Fig. 30. TEXAS 230 - Removing and Installing the Fan/venturi/
Gas Valve Assembly............................................................. I-71
Fig. 31. Removing and Installing the Burner.................................... I-73
Fig. 32. Removing the Burner Plate.................................................. I-75
Fig. 33. Cleaning the Combustion Chamber ................................... I-76
Fig. 34. Descaling the Water Heater................................................. I-77

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:
îThe failure to comply with the safety
and installation instructions provided
herein,
îThe failure to comply with the safety
and operation instructions and recom-
mendations provided herein,
îThe failure to have the appliance main-
tained regularly,
îA modi cation of the appliance that is
not approved by the manufacturer,
îThe use the product for any other pur-
pose than its intended use,
îThe 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:
îThe instructions and recommendations
provided herein
îThe applicable regulations and standards
The installer shall provide the end-user with:
îAny relevant explanation about the op-
eration of the appliance and the heat-
ing system as well as the safety devices
that are provided,
îAny instruction regarding periodic
checks to be performed and possible
anomaly to be reported
îAll 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 quali ed profes-
sional.
End-user
To ensure the best performances and safety of
the appliance, the end-user shall:
îMake sure that the appliance is in-
stalled, converted (as required), com-
missioned and adjusted by a quali ed
professional,
îMake sure that the appliance is checked
and maintained regularly by a quali ed
professional,
îComply with all the instructions and rec-
ommendations provided in the appliance
documentation,
îMake sure to receive from the installer
all the necessary explanations related
to the operation of the appliance and
the safety devices,
îMake sure to receive from the installer
all the appliance and accessories doc-
umentation,
îKeep all the appliance documentation
in a safe place for future use.
The end-user shall use the product for its in-
tended use.
îShould the installer or the end user not comply with the instructions and require-
ments stated in this manual, the warranty will be void.
îFor more information on the warranty terms and conditions, please connect to
our website: www.myaic.eu.
i
G-3
H-093630_EN • 00
General InformatIon
Liabilities of the Manufacturer, the Installer
and the End user

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 access panel(s) of the appliance
must be open/closed.
This side up
Keep dry
Fragile
Do not stack
The appliance must have cooled down.
Indicates important information.
i
Gas connection.
Ground / Earth.
High Voltage - danger of electric shock.
Gas connection.
Domestic hot water outlet.
Cold water inlet.
Cold water inlet connection.
DHW connection.
DHW recirculation connection.
G-4 H-093630_EN • 00
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-13.
The prexes used in the page numbering
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

Fig. 1. Data Plate - Typical
Texas
Floor-Standing Condensing Storage Water Heater | Stojący kondensacyjny pojemnościowy podgrzewacz c.w.u |
Productor de ACS en condensación con acumulación | Produttore di acqua calda sanitaria a condensazione con
accumulo integrato | Vloer-staande condenserende waterverwarmingstoestel | Akumulacijski talni kondenzacijski
grelnik vode | Bodenstehender Kondens-Wassererboiler | Chauffe-eau sol à condensation et accumulation | Produtor
de AQS em condensação com acumulação | Напольный конденсационный накопительный водонагреватель |
Akumulacioni podni kondenzacijski grijač vode | Επιδαπέδιος Ταχυθερμαντήρας Ζεστού Νερού Χρήσης Τεχνολογίας
Συμπύκνωσης |Газов подов Кондензен обемен Бойлер | Preparator apa calda menajera de sol,
cu arzator pe gaz in condensatie
Model
PIN
Serial No.
Date
AIC Europe No.
AIC Europe B.V.
Graafschap Hornelaan 163A
NL-6001 AC Weert
The Netherlands
1015 20
G20 – 20 mbar
Adjusted | Skorygowana | Configurado | Regolato | Afgesteld op | Prilagojen | Eingestellt für | Réglé pour | Configurado |
Скорректировано | Podešen | Προσαρμοσμένη | Коригирано | Ajustat
G20 G25 G31
Q
kW
P
kW
EXAMPLE
G-5
H-093630_EN • 00
General InformatIon
Appliance Marking
The data plate is located at the back of the appli-
ance.
Appliance Naming
In the documentation, products of the Texas
oor-standing (FS) range can be designated indif-
ferently using their full name or abbreviated name:
Texas 99 or TX 99 FS
Texas 230 or TX 230 FS
Symbol Description
Electrical data
PMS maximum operating
pressure
Tmax maximum primary
temperature
Vwater content
PMS maximum operating
pressure (DHW circuit)
Tmax maximum DHW
temperature
Vwater content
Chimney types
NOx class
The use of symbols on the data plate depends on the type of product.
i
Symbol Description
Qmin Minimum heat input
Qn Nominal heat input
Pmin (80/60°C) Minimum heat output (80/60°C)
Pn (80/60°C) Nominal heat output (80/60°C)
Pmin (50/30°C) Minimum heat output (50/30°C)
Pn (50/30°C) Nominal heat output (50/30°C)
CE sign for the compliance of the
device with CE directives
EAC sign for the compliance of the
device with all technical regulations
of the Eurasian Customs Union
Note about handling waste
electronic equipment

IF YOU SMELL GAS:
→DO NOT:
îUse an open  ame
îSmoke
îUse electrical devices (phones,
doorbell, etc.) or switches
→DO:
îClose the gas supply
îOpen all doors and windows to
ventilate the room
îInform the neighbours of the danger
by knocking at the doors.
îGet out of the building
îCall the gas company
îThis product is intended for the pro-
duction and storage of Domestic Hot
Water.
îThis appliance must be installed ac-
cording to the applicable local regu-
lations and standards.
îThis appliance can be used by children
who are at least 8 years old and by per-
sons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge, provided that they are
under supervision or have been given
instructions concerning the use of the
appliance in a safe way and that they
understand the hazards involved.
îCleaning and user maintenance shall
not be performed by children without
supervision. Children shall not play
with the appliance.
îAny modi cation to the appliance
and its components is strictly forbid-
den without the prior written consent
of the manufacturer.
îIf components need to be replaced,
only genuine factory parts or compo-
nents approved by the manufacturer
must be used.
îWhen working on the appli-
ance and the system, make
sure to use the appropriate
tools to avoid damaging the
pipes and components.
îIf 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.
îThe 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.
îWhen 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.
îWhen discarding the packaging, do not
contaminate the environment. Dispose of
it according to the applicable local regu-
lations on recycling.
i
G-6 H-093630_EN • 00
General InformatIon
Safety Instructions

Fig. 2. TEXAS Water Heater Packaged for Transport
G-7
H-093630_EN • 00
General InformatIon
Package Contents
îA water heater
îAn Installation and Maintenance manual
îA gas conversion sticker
îA set of components to be installed before
commissioning:
- A condensate trap and protective cover
- An air inlet silencer (for B-type chimney con-
nection) and hardware
- An air inlet protective cover and hardware
Refer to “Unpacking the Product” on page I-27
for the complete unpacking and installation in-
structions.

G-8 H-093630_EN • 00
TEXAS 99 - 230
General Description
This oor-standing storage water heater is a com-
pact, low-emission condensing appliance with a
pre-mix burner and a stainless steel heat exchanger.
The fully radial burner ensures a high modulation ra-
tio, combustion stability and very low NOx emissions.
This appliance produces Domestic Hot Water
through a unique and proven helical “re-tube” heat
exchanger, that oers a large heat exchange surface
to optimise energy and heating eciency. The heat
exchanger is built inside a stainless steel tank, that
can store and deliver large volumes of hot water.
The appliances are built for natural gas but can
be converted to operate with liqueed petroleum
gas (propane), by performing combustion and fan
speed adjustments according to the procedure
provided in this manual. The conversion process
should take place before commissioning and com-
ply with applicable local regulations and standards.
The water circuit of appliance is provided with a
built-in circulation pump to allow internal circulation
of water inside the tank.
The hinged front door and access panel make it
easier to access control panel and electronic com-
ponents, as well as the internal pump.
Frost Protection
The TEXAS water heaters have a built-in anti-frost
protection. The pump and the burner are started as
required when the water temperature drops below
5°C (as measured by the appliance internal sensor
installed on the return circuit).
The pump and/or burner will turn o when the tem-
perature reaches the required setpoint.
Product descrIPtIon
The anti-frost protection function only protects the
appliance, not the entire system.
Safety Devices
The water heaters of the TEXAS range are equipped
with a series of sensors and switches that provide
safety for your appliance and water circuit, such as:
îWater circuit temperature sensors (inlet/outlet)
îGas pressure switch
îFlue pressure switch
îAir pressure switch
îWater high limit switch
îBurner door high limit switch
îFlue temperature sensor
îAlarm contacts
The TEXAS water heaters are not provided with
the following mandatory safety equipment that the
installer must place in the system, in accordance
with the applicable local standards and regulations:
îA DHW expansion tank, suitable for the system
size
îA safety group and manometer.
Optional equipment
Some optional equipment can be used with the
TEXAS water heaters. Please contact your AIC
representative for more information and a list of
available equipment.
To lengthen the life of your appliance and heating
system, in addition to the characteristics of the hy-
draulic circuit described in “Requirements for the
Hydraulic Circuits” on page I-31, the following
equipment can be installed in the circuit:
îWater lter
îDirt separator
îAir separator

12
3
5
6
8 7
9
4
G-9
H-093630_EN • 00
Product descriPtion
Fig. 3. TEXAS 99 - 230 Components - Front views
KEY
1. Flue gas exhaust connexion
2. Combustion air inlet connection
3. Gas connection
4. On/O switch
5. Control panel access door
6. Control panel
7. Water tank insulation
8. Removable bottom panel
9. Reversible hinged front door

23 24
22
21
37
36
10 11
20
19
18
17
35
34
33
31
30
29
28
27
26 25
32
16
6
15
13
12
14
38
G-10 H-093630_EN • 00
Product descriPtion
Fig. 4. TEXAS 99 - Inner Components - Front & rear views
10. Fan
11. Combustion air inlet tube
12. Ignition electrode
13. Burner plate safety thermostat
14. Inspection hole
15. DHW pump
16. Electronic board
17. Flame sight glass
18. Ionisation electrode
19. Air pressure switch
20. Flue pressure switch
21. Gas pipe
22. Ignition transformer
23. Gas valve
24. Venturi
25. DHW tank with built-in heat exchanger
26. Condensate dish with ue gas temperature sensor
27. Drain Connection
28. Condensate drain
29. Condensate trap
30. Condensate level switch
31. Cold water inlet with temperature sensor
32. Recirculation connection
33. Rear terminal strip (high voltage)
34. DHW tank temperature sensor
35. DHW outlet with safety thermostat
36. Air vent
37. Gas pressure switch
38. Outlet temperature sensor