Dhw"/Group 3; Heating Circuit - Viessmann Vitodens 222-F Installation Instructions For Contractors

Codes
Coding level 1
(cont.)
Coding in the delivered condition
Filling/venting
2F:0 Venting program/filling program
disabled

"DHW"/Group 3

Select "3" (see page 46).
Coding
Coding in the delivered condition
Set DHW temperature reheating suppression
67:40 For solar DHW heating: set DHW
temperature 40 °C. Reheating is
suppressed above the selected set
temperature (boiler only starts as
backup if the rise in the cylinder
temperature is too low).
Cannot be adjusted on gas con-
densing combi boilers.
"Heating circuit ..."/Group 5
Select "5" (see page 46).
Coding
Coding in the delivered condition
Min. flow temperature heating circuit
C5:20 Electronic minimum flow tempera-
ture limit 20 °C (only for control
unit for weather-compensated op-
eration)
Max. flow temperature heating circuit
C6:74 Electronic maximum flow tempera-
ture limit set to 74 °C
Pump control in "Only DHW"
F6:25 In "Only DHW" operating mode,
the internal circulation pump is per-
manently on.
Pump control in "Standby mode"
F7:25 In "Standby mode", the internal cir-
culation pump is permanently on.
48
Possible change
2F:1 Venting program enabled
2F:2 Filling program enabled
Possible change
67:0 Set DHW temperature adjustable
to from 0 to 95 °C (limited by boiler-
67:95 specific parameters)
Possible change
C5:1 Minimum limit adjustable from 1 to
to 127 °C (limited by boiler-specific pa-
C5:127 rameters)
C6:10 Maximum limit adjustable from 10 to
to 127 °C (limited by boiler-specific pa-
C6:127 rameters)
F6:0 In "Only DHW" operating mode, the
internal circulation pump is perma-
nently off.
F6:1 In "Only DHW" operating mode, the
to internal circulation pump is started 1
F6:24 to 24 times per day for 10 minutes
each time.
F7:0 In "Standby mode", the internal cir-
culation pump is permanently off
F7:1 In "Standby mode", the internal cir-
to culation pump is started 1 to
F7:24 24 times per day for 10 min each
time.