I 7. High Altitude Testing - Viessmann Vitodens 100-W WB1B Series Installation And Service Instructions Manual

Start-up, Inspection and Maintenance
Steps
(continued)
Start-up and Maintenance
64
7. High altitude setting
Note: When the boiler is initially turned on, a self-
1. Simultaneously turn selector dials "
their center position. "SERV" appears in the display.
(To do the following step, "SERV" must still be shown
in the display.)
Note: If one (or both) of the rotary selector dials are
2.
3.
4.
Value
1
2
5. Do not adjust the selector dials for at least 15 seconds.
The set value " 1" or "2" is then saved and the
control unit returns to standard mode.
6. Turn ON/ /OFF switch OFF and then ON. When
completed, it will activate the designated setting
Vitodens 100-W, WB1B Installation & Service
diagnostic check is initiated. Wait until the
temperature display is stabilized and the boiler's
actual temperature is displayed.
already in the central position, take it (or them)
out of the central position and then
simultaneously turn both rotary selectors
back to the central position.
Turn selector dial "tr" clockwise all the way
to the "U Reset" position.
"r" appears on display along with flashing set
value " i" or "2".
With selector dial "
for operation above 5,000 ft. (1,500 m).
Turn the selector dial "
position to the right or left.
Operation
Altitude < 5,000 ft. (1,500 m)
Altitude > 5,000 ft. (1,500 m)
" and "tr" to
", set the value to "2"
" from the center