Viessmann VITODENS 200-W Installation And Service Instructions For Contractors page 69

DHW
(cont.)
497.2 "DHW circulation pump for DHW heating"
Setting
Off
On
497.3 "Number of cycles DHW circulation pump"
Setting
503.0 "Scald protection"
Setting
OFF
ON
534.0 "Circulation pump run-on"
Setting
120 s
Explanations
DHW circulation pump:
0 Switched off during DHW heating
1 ON during DHW heating to standard set value
Explanations
Number of cycles per hour for 5 minutes each during
the selected time phase:
0 1 cycle
1 2 cycles
2 3 cycles
3 4 cycles
4 5 cycles
5 6 cycles
Explanations
The adjustable water temperature is limited to a maxi-
mum value.
0 Scald protection OFF
Danger
Risk of injury due to increased DHW tempera-
ture.
Inform the system user of the risk from the high-
er outlet temperature at the taps.
1 Scald protection ON (maximum DHW temperature 60
°C)
Note
Even with the scald protection switched on, higher
outlet temperatures may occur at the draw-off points
in the following cases:
With active hygiene function
■
While the appliance is being calibrated
■
Explanations
Circulation pump run-on after cylinder heating
120 Delivered condition 120 s run-on
0 to 900 Run-on time adjustable from 0 to 900 s in 60 s incre-
ments (the run-on time is rounded down to full mi-
nutes)
Note
To avoid damaging the appliance, do not set the run-
on time to < 120 s.
System configuration (parameters)
69