Stulz C2020 User Manual

EN/07.2013/58/93
7.12. Custom 12
There are changes from the standard application:
– Low pressure on A9 instead of A13 DIG-IN.
– Fire alarm on A7 DIG-IN.
– Low voltage alarm not managed.
– New alarm on A6 DIG-IN (Wrong Phase).
– When ‘Wrong Phase’ alarm occurred, the system goes as the Off state condition.
– Manual reset pressing ESC.
7.13. Custom 13
Custom for Free-Air control.
7.14. Custom 14
System configuration
1. DIG-OUT to enable the comfort unit, is configurable by I/O Setup parameter I71.
2. DIG-IN for comfort alarm is always A3 (instead of opened door)
3. The configuration must be 1 TLC + 1 Comfort unit: sequencing system is not possible.
Control
Enable/disable comfort unit is programmable using special menu where, for every day of the week, it’s possible to set
the starting and the stopping time.
The comfort unit can be in one of the following states (in priority order):
States: Conditions: Comfort unit: TLC:
Forced Off There is one of these conditions:
• TI<S01 (2.5 degrees of Hysteresis)
• TAE>M133 (1 degrees of Hysteresis)
• TAE<M134 (1 degrees of Hysteresis)
• The system is off or stand-by.
• Fire alarm or comfort alarm in progress
Switched off Enabled
Forced On If it’s not in the above state and TI>M135 (normal condition when TI<S01) Switched on Enabled
On If it’s not in one of the above states and there is one of these conditions:
• It’s enabled (day programming) and TLC is not in free cooling mode
• TLC is broken.
Switched on Disabled
Off If it’s not in one of the above states Switched off Enabled
Day programming menu
In maintenance setup a new menu is added (only for this custom). For every day of the week, we will have 5 parameters:
starting time (hours and minutes), stopping time (hours and minutes) and enable/disable. All these parameters are
showed in one mask.
Pressing the SET key, the field “day of the week” start to flash (enable/disable). It can be changed using the UP/ DOWN
keys. Pressing the ON/OFF key, we go to the next field (starting hour). Pressing UP/DOWN keys, we can change it.
Pressing again ON/OFF key we go to the “starting minutes” field and so on (stopping hour, stopping minutes). Pressing
the SET key, we memorize the last field selected and we go out from the setting mode. Pressing UP we go to the next
day of the week.

Stulz C2020 Specifications

General

Brand	Stulz
Model	C2020
Category	Controller
Language	English