A.O. Smith TWI 35-200, Installation, User And Service Manual

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8.8.1 Preparation......................................................................48
8.8.2 Mains power.................................................................... 49
8.8.3 External ON mode switch (optional).................................... 49
8.8.4 Finalization...................................................................... 49
8.9 Commissioning.................................................................49
8.9.1 Filling..............................................................................49
8.9.2 Air pressure differential..................................................... 50
8.9.3 Gas supply pressure..........................................................50
8.9.4 CO
2
value........................................................................51
8.9.5 Turn on the water heater................................................... 52
8.10 Decommisioning...............................................................52
8.10.1 Turn off the water heater................................................... 52
8.10.2 Draining.......................................................................... 53
9 Conversion of gas type.............................................................. 55
10 Settings.....................................................................................57
10.1
Display............................................................................57
10.2 Temperatures...................................................................57
10.2.1 Temperatures...................................................................58
10.2.2 Hysteresis....................................................................... 58
10.3
Appliance Status...............................................................59
10.4 Display settings................................................................59
10.4.1 Set the display brightness..................................................59
10.4.2 Set the backlight delay......................................................60
10.4.3 Set the language.............................................................. 60
10.5
Appliance information........................................................61
10.5.1 Use external enable.......................................................... 61
10.5.2 Ignition attempts..............................................................62
10.6
Error history.................................................................... 62
10.7 Error occurrence...............................................................63
10.8 Restore default.................................................................63
10.9 Service menu...................................................................63
10.9.1 Set the service mode........................................................ 64
10.9.2 Set the fan speed............................................................. 65
11 Maintenance.............................................................................. 67
11.1
Performance check........................................................... 67
11.2 Preparation......................................................................68
11.3 Water-side maintenance.................................................... 68
11.3.1 Descale the tank.............................................................. 68
0313279_TWISTER II_UKUK_
V1.1, 18-02-2019
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