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CHIL_S_S
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-
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-
-
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Disable
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-
-
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Disable
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-
-
-
-
-
Enable
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-
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Enable
REMOTE
START/STOP
CONTACT
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-
-
-
Off
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-
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Off
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-
-
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On cooling
On heating
On auto
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-
On cooling
On heating
On auto
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MASTER
CONTROL
TYPE
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-
-
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-
Local
Remote
Remote
CCN
CCN
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Local
Remote
Remote
Remote
CCN
START/STOP
SCHEDULE
MODE
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-
-
Unoccupied
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Unoccupied
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Unoccupied
Unoccupied
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Unoccupied
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Unoccupied
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Occupied
Occupied
Occupied
Occupied
Occupied
Occupied
Occupied
Occupied
Occupied
Occupied
CCN
EMERGENC
Y
SHUTDOWN
Enable
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Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
GENERA
L
ALARM
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Ye s
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-
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-
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No
No
No
No
No
No
No
No
No
No
No
LOFF
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Active
L-C
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Active
L-SC
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-
Active
Active
rEM
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-
Active
Active
Active
Active
Active
CCN
-
-
Active
Active
Active
MASt
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-
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
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-
Local
Local
Remote
Remote
CCN
CCN
Local
Remote
Remote
CCN
CCN
Local
Local
Remote
Remote
Remote
CCN
Local
Remote
Remote
Remote
CCN
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
ACTIVE OPERATING TYPE STATUS OF PARAMETERS CONTROL UNIT
TYPE MODE
5.2 - Heating/cooling/standby operation
5.2.1 - General
The heating/cooling/standby selection applies to all units. But
only 30RA/RY (liquid chillers) units, controlling a boiler and
30RH/RYH (heat pumps) units can change over to heating
mode. Heating/cooling control can be automatic or manual.
In automatic mode the outdoor temperature determines the
heating/cooling/standby changeover based on the two
threshold values configured by the user (see Setpoint menu for
cooling and heating mode changeover thresholds). If the unit is in
standby it does not cool or heat, and no compressor can be
activated. The diagram below summarises the operating
principle in automatic mode.
HEATING STANDBY COOLING
Outdoor
temperature
Heating
threshold*
Cooling
threshold
5.2.2 - Heating/cooling/auto selection
The table below summarises the unit heating/cooling opera-
tion, based on the following parameters:
- Control type: indicates whether the unit operates in local,
remote or CCN mode. See section 5.1.
- Unit on/off status: indicates whether the unit is shut
down (not authorised to start) or in operation (or
authorised to start).
- Heating/cooling/auto selection in local mode: operating
mode selected via the user interface. See Information
menu.
- Remote heating/cooling contacts: these contacts are only
active if the unit is under remote control. See sections
3.6.2 and 3.6.3.
- HC_SEL: this network command permits heating/
cooling/auto control, if the unit is in CCN operating
mode.
- Outdoor temperature: determines the operation, if the
unit is in automatic heating/cooling/standby changeover
mode.
* This threshold does not apply to cooling only units that do not control a boiler.