Changing Room Temperature - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Overview of Controls and Indicators
Start-up and Maintenance
Fig. 66

Changing Room Temperature

(continued)
Legend
A Heating mode pump output "ON"
B DHW mode pump output "ON"
C Boiler water temperature in °F or
D Units for boiler water temperature
E Service mode
F Current burner firing power rate
G Burner in operation indicator
H Fault indicator
In case a separate external room
temperature controller (thermostat)
is installed, the desired room
temperature will be adjusted using
this device.
Make adjustments using the
appropriate operating instructions
only.
Note:
lf thermostatic radiator valves are
installed in the room where the
control is installed they must be fully
open.
In case the room temperature setting
on the separate room temperature
controller is not sufficient to achieve
the desired room temperature (e.g.
during a particularly cold winter),
the boiler water temperature can be
adjusted accordingly using the boiler
water temperature selector dial tr.
Troubleshooting
(when RT is closed)
(when DHW is closed)
fault code
measurement
63