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Siemens Standard application AHU CE1P3977en_02
Building Technologies Functions 01.02.2010
Main Index > Unit > Temp control > Heating
Main Index > Unit > Temp control > Heating 2
Parameter Range Function
Controller 0...100 [%] Present value for the heating controller. Go to page
with all controller settings.
Output signal 0...100 [%] Present value for heating valve output. Go to page
with all analog output settings.
Setpoint Extra Seq 0.0...99.0 [°C] For Heating 2 only:
Setpoint for additional stand-alone heating register.
Frost protection 0...100 [%] Present value for the frost controller. Go to heating
register frost protection page to parameterize frost
control.
Pump – On
– Off
Current pump status. Go to heat pump page to pa-
rameterize the pump.
Pre heating – Passive
– Active
Present state of preheating. Go to heating register
preheating page to parameterize the preheating
function for the register.
Frost monitor – OK.
– Frost.
Present state of frost detector. Go to page with digi-
tal input settings.
For the “Frost” state, the pump starts, the heating
valve opens to 100% and the plant is shut down and
locked.
5.8.2 Heating pump
Heat pump is enabled:
Main Index > Configuration > Configuration 2 > Heating pump <> No
Main Index > Configuration > Configuration 2 > Heating 2 pump <> No
The pump starts, if one of the following conditions is met:
• No fault is pending and the heating valve is opened to at least 5 %.
or
• The outside air temperature is less than the pump start tmp
or
• Pump kick is enabled.
The pump stops for the following cases:
• A fault occurs.
or
• The heating valve is under 1 %.
Operating hours for the pump can be recorded and reset:
Main Index > Unit > Operating hours > Heating pump bzw. Heating 2 pump Reset
Main Index > Unit > Temp control > Heating > Pump
Main Index > Unit > Temp control > Heating 2 > Pump
Parameter Range Function
Command – Off
– On
Current pump state. Go to page with digital out-
put settings.
Fdbk – OK
– No Fdbk
Present state of pump feedback.
Go to page with digital input settings. For exam-
ple, you can set the time for jitter protection (De-
fault: 5 s).
Parameterization
Prerequisite
Function
Record operating hours.
Parameter
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 74
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