Viessmann VITOTRONIC 200 Service Instructions Manual page 190

Service functions
Function check
(cont.)
Function
"Primary source"
Note
This function takes approx. 10 min.
"Fan" /
"Cooling" /
"Ice store"
"Vitovent ventilation"
"Vitovent heating"
190
System characteristics
Not for ice store as primary source:
Primary pump starts.
■
An average value for the primary circuit flow temperature is calculated
■
every minute.
Note
The temperature of the undisturbed ground is determined.
If the function is terminated early, the average value calculated at the
time of termination is saved.
Fan is started.
The following steps are repeated cyclically:
1. The max. speed of the fan is set within 60 s.
2. The min. speed of the fan is set within 60 s.
Secondary pump and fan are started.
■
Compressor regulates to the set value. Compressor output is set.
■
Secondary circuit regulates to a flow temperature of 10 °C.
■
Absorber circuit pump starts.
■
3-way diverter valve changes over, so that the solar air absorber be-
■
comes the primary source.
Primary pump starts.
■
Vitovent 200-C:
The following steps are repeated cyclically:
1. Ventilation level is set for 120 s.
4
2. Ventilation level is set for 120 s.
1
3. Ventilation level is set for 120 s.
0
Vitovent 300-F:
Ventilation level is set for 60 s. Any active bypass will be deactiva-
0
ted.
The following steps are then repeated cyclically:
1. Within 120 s, the air flow rate is increased to its maximum value and
kept constant.
2. Within 120 s, the air flow rate is reduced to the min. value and kept
constant.
3. The fans remain off for 30 s.
Note
After the function check has been completed, ventilation level
for 60 s. Only then will the ventilation unit recommence its operation in
accordance with the set operating and time program.
Vitovent 300-F:
Ventilation level is set.
■ 4
The secondary pump and the heating circuit pump A1/HC1 (if instal-
■
led) are started.
The flow temperature in the ventilation heating circuit is set to 40 °C.
■
is set
0