G-2
H-093630_EN • 00
T
able
of
C
onTenTs
G
eneral
I
nformatIon
......................................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
P
roduct
d
escrIPtIon
.....................................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
t
echnIcal
s
PecIfIcatIons
..............................G-14
Dimensions ............................................................G-14
Clearances ..............................................................G-15
Performance and Efficiency Data ...........................G-16
ErP Data ..................................................................G-16
Electrical Data .........................................................G-16
Hydraulic Data ........................................................G-16
Combustion Data ....................................................G-17
Gas Data .................................................................G-18
I
nstructIons
for
the
u
ser
............................ 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
P
roduct
I
nstallatIon
................................... 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
c
ommIssIonInG
...............................................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
m
aIntenance
..................................................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
d
eclaratIon
of
c
onformIty
............................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 Switch I-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