Ariston CLAS - Table of Contents

Training manual CLAS
Pag. 2 di 71
INDEX
1 GENERAL INFORMATION .................................................................................................................................. 4
1.1 SIZES AND DIMENSIONS ............................................................................................................................... 4
1.2 SEALED CHAMBER OVERALL VIEW (FF) .................................................................................................. 5
1.3 OPEN CHAMBER ASSEMBLY VIEW (CF) .................................................................................................... 6
2 CLAS.......................................................................................................................................................................... 7
2.1 HEATING MODE: OPERATING LOGIC ......................................................................................................... 7
2.1.1 Hydraulic heating operating diagram ...................................................................................................... 10
2.2 SANITARY MODE: OPERATING LOGIC .................................................................................................... 11
2.2.1 Sanitary mode operation hydraulic diagram ............................................................................................ 14
3 SPECIAL FUNCTIONS......................................................................................................................................... 15
3.1 “FLUE CLEANER” FUNCTION ........................................................................................................................ 15
3.2 “COMFORT” FUNCTION .................................................................................................................................. 16
3.3 “ANTIFREEZE” FUNCTION ............................................................................................................................. 17
3.4 “WATER FLOW CHECK” .............................................................................................................................. 18
3.5 “AIR PURGE” FUNCTION. ................................................................................................................................ 21
3.6 “SELF ADAPTIVE HEATING RESTART DELAY” ...................................................................................... 22
4 HYDRAULIC UNIT ............................................................................................................................................... 23
4.1 RIGHT HYDRAULIC BLOCK ................................................................................................................................. 24
4.2 LEFT HYDRAULIC BLOCK ................................................................................................................................... 25
4.3 3-WAY VALVE ............................................................................................................................................... 26
4.3.1 The attitude of the boiler during 3-way valve switching. .......................................................................... 27
4.3.2 3-way valve motor ..................................................................................................................................... 27
4.4 SECONDARY EXCHANGER ......................................................................................................................... 28
4.4.1 Antiscale limit temperature ....................................................................................................................... 28
4.5 PUMP UNIT ..................................................................................................................................................... 29
4.5.1 PUMP speed check ................................................................................................................................... 30
4.5.2 Types of post-circulation ........................................................................................................................... 30
4.6 HEATING PRESSURE SWITCH (ONLY FOR FF VERSION, FROM JULY 2009) ................................................. 31
4.7 FILLING TAP .................................................................................................................................................. 31
4.8 DRAIN VALVE ............................................................................................................................................... 31
4.9 BY-PASS .......................................................................................................................................................... 32
4.10 PRIMARY EXCHANGER ............................................................................................................................... 33
4.11 HEATING FILTER .......................................................................................................................................... 34
4.12 EXPANSION VESSEL .................................................................................................................................... 35
4.13 SANITARY PROPORTIONAL FLOW METER ............................................................................................. 36
4.14 TEMPERATURE PROBE ................................................................................................................................ 37
4.15 OVERHEAT THERMOSTAT ......................................................................................................................... 38
5 GAS UNIT ............................................................................................................................................................... 39
5.1 SIT 845 SIGMA GAS VALVE ......................................................................................................................... 39
5.2 SOLENOID VALVE ELECTROPNIC CONNECTION DIAGRAM .............................................................. 39
5.3 GAS REGULATIONS ...................................................................................................................................... 40
5.3.1 SUPPLY PRESSURE CHECK .................................................................................................................. 40
5.3.2 MAXIMUM SANITARY POWER CHECK ................................................................................................ 40
5.3.3 MINIMUM POWER CHECK.................................................................................................................... 41
5.3.4 SOFT IGNITION POWER CHECKING ................................................................................................... 41
5.3.5 GAS PRESSURE/HEAT INPUT GRAPHICS – MODELS CF .................................................................. 41
5.3.6 GAS PRESSURE/HEAT INPUT GRAPHICS – MODELS FF .................................................................. 42
5.3.7 HEATING DELAY REGULATION ........................................................................................................... 43
5.3.8 HEATING MAXIMUM POWER REGULATION ...................................................................................... 43
5.3.9 GAS TABLE .............................................................................................................................................. 44
5.4 BURNER .......................................................................................................................................................... 45
5.5 THE FUME DISCHARGE SYSTEM ............................................................................................................... 46
5.6 AIR PRESSURE SWITCH ............................................................................................................................... 46
5.7 FIXED SPEED FAN ......................................................................................................................................... 47