IBC SL 26-260 G3

INSTALLATION AND OPERATION INSTRUCTIONS
6
SL 26-260 G3, SL 40-399 G3 MODULATING GAS BOILERS
4.0 MAINTENANCE ...................................................4-1
4.1 BOILER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 General Care ..................................................4-1
4.1.2 Inspection.....................................................4-1
4.1.3 Venting .......................................................4-1
4.1.4 Condensate Traps ..............................................4-1
4.1.5 Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.6 Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.7 Pump ........................................................4-2
4.1.8 Gas Piping ....................................................4-2
4.1.9 Touchscreen Boiler Controller .....................................4-2
4.1.10 Water .......................................................4-2
4.1.11 Freeze Protection ..............................................4-2
4.1.12 Boiler Treatment...............................................4-2
4.1.13 Relief Valve - Maintenance and Testing .............................4-3
4.2 GEOGRAPHY & COMPONENTS......................................4-4
4.2.1 Fan and gas valve removal instructions..............................4-6
4.2.2 Fan and gas valve re-installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.2.3 Replacing the gas valve ..........................................4-8
5.0 TROUBLESHOOTING ..............................................5-1
5.1 PRELIMINARY CHECKS ............................................5-1
5.2 ELECTRONIC COMPONENTS .......................................5-2
5.2.1 Temperature Sensors ............................................5-2
5.2.2 Fan ..........................................................5-3
5.2.3 Water Pressure Sensor ..........................................5-3
5.2.4 Safety and Ignition Module (SIM)...................................5-3
5.2.4.1 Low water cutoff function: reset and test............................5-4
5.2.4.2 Water Temperature function: reset and test .........................5-5
5.3 TROUBLESHOOTING ..............................................5-6
5.3.1 Using Control Module Errors Displayed ..............................5-6
5.3.2 Ignition Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.3.3 Cycling Problems ...............................................5-9
5.3.4 Temperature Problems ..........................................5-10
5.3.5 Miscellaneous.................................................5-11
6.0 DIAGRAMS.......................................................6-1
6.1 PARTS DIAGRAMS ................................................6-2
6.2 WIRING DIAGRAMS ...............................................6-9
6.3 SEQUENCE OF OPERATION .......................................6-11
INSTALLATION & COMMISSIONING REPORT.............................6-12
INSTALLER SET-UP..................................................6-13
SERVICE RECORD ..................................................6-14
NOTES ....................................................6-15
REVISION HISTORY .................................................6-17