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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Functions
01.02.2010
Main Index > Configuration > Configuration 2
Parameter
Range
Function
Combi Coil
– None
– 1 output
– 2 outputs
This setting determines whether it is a 2 (1Output)
or 4 (2Outputs) line CombiCoil.
A common register is used for heating and cooling.
For the CombiCoil with one output, the input for summer-winter changeover should
be enabled in all cases so that the information on summer or winter operation is
available. (Configuration 1 > Su-wi input = Yes)
The heating register is exclusively active during the winter; the cooling register ex-
clusively during the summer.
The various control settings can be made separately for heating and cooling.
If an additional electrical register is activated, it acts as a second heating register
during the winter and a normal heating register during the summer. This makes it
possible to heating as needed during the summer.
Output for heating is used for both heating and cooling.
The summer-winter changeover is not used for Combicoil with 2 outputs, but the
heating output and cooling can never be active at the same time.
For both 1 output and 2 output mode are the frost controller and the frost alarm
deactivated in summer, or if the coolingvalave is open.
Only one output for pump is used (heating), but the pump functionallity must be
enabled even for cooling if also cooling should control the output.
5.6 Heat recovery damper
Heat recovery with mixed air dampers are enabled and preconfigured in configura-
tion 1, configuration 2 and configuration I/Os.
Main Index > Configuration > Configuration 1
Parameter
Range
Function
Hrec damper
– No
– No mixed air damper.
– Normal
– Mixed air damper with output signal 100% for
complete recirculation.
– Inverse.
– Mixed air damper with output signal 0% for
complete recirculation.
Main Index > Configuration > Configuration 2
Parameter
Range
Function
HrecDampr Sequence
– Damper-Htg
– Htg-Damper
Intervention sequence for mixed air dampers
and heating register.
– Mixed air dampers first.
– Heating register first.
Hrec clg recovery
– No
– Hrec
– DamperHrec
– Both
– No cooling recovery.
– Cooling recovery, e.g. using a rotary heat ex-
changer.
– Cooling recovery using mixed air dampers.
– Both variants active.
Configuration
Function
Prerequisite
Enable
Configuration
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 67
