
75
The following actuator functions can be controlled subject to the system equipment level:
Display
Explanation
Gas condensing boiler group
Fan speed
Set value
Burner fan speed in rpm (rotations/minute)
Burner modulation, set
value
■
Off
■
Minimum
heating out-
put
■
Maximum
heating out-
put
■
Maximum
DHW output
Modulation level (in accordance with specific heat generator settings)
3-way valve target posi-
tion
Heating
3-way diverter valve set to heating mode
Middle
3-way diverter valve in central position (filling/draining)
DHW
3-way diverter valve set to DHW heating
Heating group
Primary circuit pump
speed
Set value
Internal circulation pump speed in %
3-way valve target posi-
tion
Heating
3-way diverter valve set to heating mode
Middle
3-way diverter valve in central position (filling/draining)
DHW
3-way diverter valve set to DHW heating
Heating circuit 1 pump
speed
Set value
Speed, heating circuit pump, heating circuit 1 without mixer in %
Heating circuit 2 pump
speed
Set value
Speed, heating circuit pump, heating circuit 2 with mixer in %
Heating circuit 3 pump
speed
Set value
Speed, heating circuit pump, heating circuit 3 with mixer in %
Heating circuit 4 pump
speed
*2
Set value
Speed, heating circuit pump, heating circuit 4 with mixer in %
Mixer HC2
Open
Output for "Mixer open" enabled (mixer extension kit)
Stop
Current position is maintained
Close
Output for "Mixer close" enabled
Mixer HC3
Open
Output for "Mixer open" enabled (mixer extension kit)
Stop
Current position is maintained
Close
Output for "Mixer close" enabled
Mixer HC4
*2
Open
Output for "Mixer open" enabled (mixer extension kit)
Stop
Current position is maintained
Close
Output for "Mixer close" enabled
DHW group
Primary circuit pump,
set speed
Set value
Internal circulation pump in %
3-way valve target posi-
tion
Heating
3-way diverter valve set to heating mode
Middle
3-way diverter valve in central position (filling/draining)
DHW
3-way diverter valve set to DHW heating
Circulation pump for cyl-
inder heating
On
Off
DHW circulation pump
On
Off
Group Solar
(not for Vitodens 222-W)
*2
(only Vitodens 200-W, type B2HF with 7 inch screen)
Diagnosis and service checks
Checking outputs (actuator test)
(cont.)
6151778
Diagnosis