Application

Room Functions
Room GreenLeaf
39
Siemens Industry, Inc.
Application Note
A6V11692055
Smart Infrastructure – Building Products
2019-04-01
If user does not manually press key 8 a second time, presence / Comfort expire
after a configurable delay (default 120 minutes).
No: The user cannot confirm his presence by pressing Key 8.
Enable operation: room op.mode ✳
Enable operation: room op.mode defines if the room climate operating mode is
displayed and if the user can change it.
Yes: The room climate operating mode is displayed and you can change it.
Key 7:
No: The room climate operating mode is not displayed and you cannot change it.
Enable operation: green leaf ✳
Enable operation: green leaf defines if the Green Leaf LED indicates if the
conditions for the energy efficiency state are fulfilled and whether the user can
reset the application to energy efficient parameter values.
Yes: The Green Leaf LED indicates if the conditions for the energy efficiency state
are fulfilled, and you can reset the application to energy efficient parameter values
by pressing the Green Leaf LED when it isn’t green.
No: The Green Leaf LED does not indicate if the conditions for the energy
efficiency state are fulfilled and you cannot reset the application to energy efficient
parameter values.
Room GreenLeaf
The application function Room green leaf, impact on room energy efficiency
(RGrnLf) calculates the energy efficiency state of the room (Undefined, Poor,
Satisfactory, Good, Excellent) and makes this state available for display on the
room operator unit, where energy efficient conditions can be restored by pressing
the GreenLeaf button.
The GreenLeaf function signals to a room occupant whether the selected operating
commands are energy efficient. Energy efficiency is indicated by a leaf icon on the
room unit that turns green. If the leaf icon is red, the room occupant can reset the
controller back to a normal, energy efficient operating state by pressing the
GreenLeaf button on the room unit.
Each discipline has its own rules for determining the impact of energy efficiency
and hands over the result to AF Room GreenLeaf function, where the overall room
situation is evaluated.
⚫ The AF reads the energy efficiency state of the discipline AFs for HVAC, lighting
and shading as well as the reset request from the room operator unit.
⚫ The room's energy efficiency state is indicated by the GreenLeaf icon on the
room operator unit. The icon turns red as soon as manual intervention changes
one of the disciplines to a non-energy-efficient state.
⚫ Pressing the GreenLeaf icon / button on the room operator unit restores the
room to an energy-efficient state. The AF sends a reset request to the
disciplines for HVAC, lighting and shading
⚫ Criteria for energy efficiency: