Viessmann VITOCAL 222-G Fiche technique Page 115

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Vue de la page 114
1. Start the test program:
Menu item
&
"Device settings"
&
"Contractor level"
&
"Commissioning"
&
"Further menu items"
&
"Heating circuit 1 pump"
&
or
&
"Heating circuit 2 pump"
&
(if installed)
Note
The time elapsed since the start of
the test program is shown in the top
r.h. corner of the display. Further-
more, the status of all components
that are part of the test procedure
is displayed.
2. Determine the temperature differ-
ential between the heating flow and
return of the respective heating cir-
cuit using a contact thermometer.
3. Determine and enter the actual
values and test conditions in accor-
dance with the commissioning/ser-
vice report from page 216.
4. The heating flow temperature must
reach the temperature at the
"Buffer cylinder" ± 2 K; the heat-
ing return temperature must be
higher than the room temperature.
Otherwise the throughput is inade-
quate.
Increasing the flow rate:
&
Vent the heating circuits
&
Increase the speed of the pump
of the auxiliary heating circuit
&
Replace the pump, if required
5. Terminate the test program with
"BACK".
Checking the primary pump
1. Start the test program:
Menu item
&
"Device settings"
&
"Contractor level"
&
"Commissioning"
&
"Primary pump"
Note
The time elapsed since the start of
the test program is shown in the top
r.h. corner of the display. Further-
more, the status of all components
that are part of the test procedure
is displayed.
2. Check the circulation on the pri-
mary side (brine circuit):
&
The primary inlet (display "Pri-
mary in") and outlet (no display,
use contact thermometer) must
show identical, low temperatures.
&
The pump casing of the primary
cooling circuit pump must not
heat up (check by touching the
casing).
Otherwise:
&
Vent the primary circuit
&
Check the pump connections
&
Change the pump stage
&
If required, use a larger pump
Further details regarding the individual steps (cont.)
115
Commissioning, inspection, maintenance
5592 969 GB
Service
Vue de la page 114
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