72
Settings and test values
Set value
Commissioning
Maintenance/
service
Frost protection
(brine medium) for geo-
thermal probes for BW
°C
-15
External heating circuit pump test
Circulation pump type
Circulation pump stage
Overflow valve setting
Commissioning, primary circuit
Primary circuit flow temperature
(
"Diagnosis"
Ó
"System overview"
)
°C
Primary circuit return temperature
(
"Diagnosis"
Ó
"System overview"
)
°C
Temperature differential (primary circuit
flow/return)
Δ
T:
■
If secondary circuit flow temperature =
35 °C primary circuit flow temperature
= 10 °C
K
3 to 5
■
If secondary circuit flow temperature =
35 °C primary circuit flow temperature
= 0 °C
K
2 to 4
Testing the mixer, heat pump and cylinder heating
Checked under the following conditions:
Room temperature
°C
Outside temperature
°C
Temperature
"Cylinder temp. top"
con-
stant?
Yes (
±
1 K)
Secondary circuit flow temperature
°C
Rising
From
To
From
To
Temperature differential
Δ
T
"Flow temp. secondary"
/
"Return temp.
sec."
K
6 to 8
Control parameter report
Parameter description
"Vitotronic 200" service instructions
Commissioning/service reports
Hydraulic parameter report
5787 232 GB
Appendix
Summary of Contents for BW 301.C090
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