Flow - Viessmann Vitoflex 300-UF Series Installation And Operating Instructions Manual

Parameter

Flow

Parameter
"Flow temperature"
"Return temperature, minimum"
"Return temperature, calculated" Displays the sliding set value for the return temperature
"Dissipate excess heat"
"Runtime, boiler valve"
"Runtime, boiler circuit pump,
minimum"
"Firebed maintenance ON"
"Firebed maintenance OFF"
"Standby ON"
"Standby OFF"
"Minimum standby time"
52
Description
Supply temperature
Setting in °C
Minimum return temperature
Setting in °C
Only if flow control is activated, see page 70
If the boiler water temperature rises above this
temperature, a floating contact is switched. The contact
is provided for on-site actuation of heat consumers.
Setting in °C
Runtime of the boiler valve (actual: displays the valve
position as a % of maximum opening)
Setting in °C
Minimum boiler circuit pump runtime
Settings in minutes
If the supply temperature rises above this value, the
boiler switches to the "Maintaining" operating state.
Setting in °C
If the supply temperature drops below this value, the
boiler switches to the "Load" operating state.
The value for "Firebed maintenance OFF" must not be
greater than or equal to the value for "Firebed
maintenance ON".
Setting in °C
If the supply temperature rises above this value, the
boiler switches to the "Standby" operating state.
Setting in °C
If the supply temperature drops below this value, the
boiler switches to the "Filling" operating state.
The value for "Standby off" must not be greater than or
equal to the value for "Standby on".
Setting in °C
Minimum standby time in the "Standby" operating state
Settings in minutes
Vitoflex 300-UF Installation & Operating
"Settings" tab
Setting range Standard
value:
75 to 95 85
65 to 80 70
50 to 110 95
80 to 500 140
1 to 30 10
"Flow 90
temperature"
+3 to 100
"Flow 88
temperature"
+1 to
"Firebed
maintenance
ON"-2
"Flow 100
temperature"
+5 to 105
"Flow 87
temperature"
to "Firebed
maintenance
OFF"-1
0 to 60 10