Viessmann VITOCAL 200-G, Инструкция по установке и обслуживанию

Страница: 108 / 208

5. Terminate the test program with
"
BACK ".
Checking the external heating circuit pumps
Note
The following test program is not required for system versions without external
heating circuit pump.
In system versions without instantaneous heating water heaters (accessories)
the heating water buffer cylinder must be heated up to at least 35 °C by the heat
pump (see page 110).
1. Start the test program:
Menu item
& " Device settings "
& " Contractor level "
& " Commissioning "
& " 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 190.
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 throughput:
&
Vent the heating circuits
&
Increase the speed of the exter-
nal heating circuit pump
&
Replace pump if necessary
5. Terminate the test program with
"
BACK ".
Further details regarding the individual steps
(cont.)
108
Commissioning, inspection, maintenance
55
92
968
GB