Sequence selection, cooling with Air or Water fi rst.
It is possible to prioritise cooling with water fi rst or air fi rst.
For the sequence selection water/air the cooling valve is not permitted to open until a given nozzle pressure is reached,
this is to ensure that no cold air drops down into the occupancy zone.
The sequence selections are parameter selections in software, i.e. it is the same physical product being delivered from
the factory.
The principle is the same irrespective of whether you have one product in the room or several Master/Slaves connected.
Sequence selections are described in the following graphs.
Function in the room.
Sequences
1. Occupancy - temperature rises
2. Room temperature reaches the level for the cooling demand - air opens to
reach the minimum pressure that permits the cooling valve to open
3. The cooling valve is permitted to open
4. Cooling valve fully open, but there is still a cooling demand in the room -
air damper opens to cool with more air
5. Cooling valve and air damper fully open
6. Temperature reaches the room’s setpoint, damper and valve close
ADAPT Parasol
- Sequence Water/Air
Flow
Water/Air
* Min P (Min cooling pressure): minimum permitted nozzle pressure to allow the cooling valve to open, this is to pre-
vent cold draughts when the cold water circulates in the coil. In the event of a too low nozzle pressure and low tem-
perature there is a risk the air drops too early from the ceiling.
20 Pa default but can be changed.
*
6
5
4
1
2
3
Max. occupancy fl ow
Min. P cooling valve
Min. occupancy fl ow
Valve 100% open
Vacancy fl ow
Valve 0% open
Occupancy with cooling demand
Water
Air
Room temperature
11
ADAPT Parasol b
Swegon reserves the right to alter specifi cations.
25/11/2014
www.swegon.com
A
D
A
PT P
ar
as
o
l b
