CLIVET CSRN-XHE2 Series, Manual

Page: 33 / 92

33
Ambient pressure control
CCK or CCKP configurations only.
The ambient pressure control device compares the return
pressure with the external pressure and compensates any
variations by acting on the outdoor air damper.
This way, the unit maintains the relevant ambient pressure
desired by the user, who can choose between the overpressure,
depression or equal-pressure.
Room pressure calibration
1 Check the serviced room has doors and windows closed 2
2 Calibration must be carried out with the unit in full
recirculation: during the first 20 minutes from start-up, the
unit is in full recirculation
3 On display view the state::
PDiffRipresa_X4:AI-955 value of the return load losses
4 Wait for the pressure value to stabilise and take note of the
value
5 To maintain the room in neutral pressure, memorise in
menu
RECOVERY RENEWAL
,
par. 334 SetPAmb the pressure value detected in point 4
6 to maintain the room in overpressure, memorise a lower
value respect to that detected in point 4
7 to maintain the room in depression, memorise a higher value
respect to that detected in point 4
Textile channels
Opztion
The operation allows to set the start-up ramp of the supply fan
menu SUPPLY VENTILATION
par 266 SfRateoStartup
example :
par 266 = 2% / sec
fan speed = 70% in 35 sec
example :
par 266 = 0% / sec
fan speed = 70% in 0 sec