Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 153
Air source heat pump, monoblock version for heating and cooling operation, with 1 integrated heating/cooling circuit
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Also See for VITOCAL 151-A:
- Operating instructions for the system user (60 pages) ,
- Manual (24 pages)
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Commissioning/service reports
Hydraulic parameter report
Settings and test values
Checking external heating circuit pumps
Circulation pump type
Circulation pump stage
Primary circuit commissioning
Air intake temperature
Air discharge temperature
Temperature differential (air intake/
discharge)
T:
Δ
At secondary circuit flow temperature
■
= 35 °C and air intake temperature
15 °C
≤
At secondary circuit flow temperature
■
= 35 °C and air intake temperature
15 °C
>
Checking mixer, heat pump and cylinder heating
Checked under the following conditions:
Room temperature
Outside temperature
Cylinder temperature constant?
Secondary circuit flow temperature
Temperature differential
Δ
(Secondary circuit temperature spread)
°C
°C
K
K
°C
°C
°C
T
K
Commissioning/service reports
Set value
Commissioning
4 to 8
4 to 13
Yes (
1 K)
±
Rising
From
6 to 8
Maintenance/
service
To
From
To
153
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