5
5712 718 v1.0
Vitotronic 100, KW10B Operating and User’s Information
Operation
Overview
Location of Controls
The control is located behind the flip-down cover.
Open the flip-down cover by carefully pulling it forward
from the top.
Close the flip-down cover when finished all operations.
Front view of the control
Summer mode switch
The front mounted summer mode switch
F
when in the
up (summer/winter) position
a
will allow the thermostat
terminal to call for heat, DHW functionality and outdoor
reset when programmed. Outdoor reset operation is based
on the Warm weather shut down setting.
When the summer mode switch
F
is in the down
(summer/DHW) position
w
, the thermostat terminal to
call for heat will be disabled. Units equipped with an
outdoor temperature sensor and programmed for either
internal outdoor reset or OpenTherm enabled thermostat
will start calculating a boiler water temperature at an
outdoor temperature of 37
o
F (3
o
C) and below. The boiler
pump will be turned on and run continuously.
Override switch
The front mounted override switch
H
when in the up
position
h
, turns the boiler pump on and enables stage 1
and 2 call for heat. The boiler operates on the adjustable
high limit temperature.
When the override switch
H
is in the down position
a
,
the system is in normal operation.
Power switch
The front mounted power switch
G
when in the up
position I, the control system is on.
When the power switch
G
in the down position 0, the
control system is off.
Front panel
