Viessmann VITOCAL 222-G Fiche technique Page 153

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A Heating command
B Primary pump
C Secondary pump
D Compressor
E Start delay
F Secondary pump flow
G Primary pump flow
H OFF
K ON
Access
&
"Device settings"
&
"Programming"
&
"Heat pump"
&
"Primary pump flow"
&
or
&
"Flow sec. pump" (P/Q)
Standard setting 2:00 min
Setting range 00:10 to 16:40
min
Optimum runtime
Setting the optimum heat pump runtime. Excessive runtimes (subject to the pri-
mary circuit layout) can lead to the geothermal probe icing up, which reduces
the efficiency (COP).
Flow; primary/secondary pump (cont.)
153
Heat pump control settings
5592 969 GB
Service
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