SystemAir SAVE VTR 150/B Service & Accessories Installation Manual page 23

Setting
Manual
-
Pressure
Sensors —
configure sensor
voltage relation
to pressure.
Set value at
which fan alarm
occurs. Default
setting is None
-
Set K factor for
supply air fan
and extract air
fan. Default
settings are
based on unit
type.
Outdoor A purpose of this function is to protect the unit from freezing by creating an unbalanced airflow
Compensation at extreme winter temperatures or to limit supply of cold/hot outdoor air at extreme winter/
summer conditions with balanced ventilation.
Function operates by lowering the speed of supply air fan (SAF) or both supply and extract air
fans (SAF/EAFC) by value set in Stop Compensation Value setting (adjustable from 0% to
50%) if the outdoor air temperature (OAT) drops below adjustable value set in Start
Compensation Temperature setting (during winter from 0 °C to -30 °C / during summer
from 15 °C to 30 °C). This compensation reaches the maximum as soon as the outdoor air
temperature reaches the adjustable value set in Stop Compensation Temperature setting
(during winter from 0 °C to -30 °C / during summer from 15 °C to 30 °C)
Important
Changing the airflow type does not change P-band value automatically. P-band value have to be changed
manually after changing the airflow type.
Demand Control
Configure indoor air quality sensors. Once sensor(s) are configured, Demand Control function is activated by choosing
AUTO mode in home screen.
• Activate or deactivate CO
Set CO sensor setpoint. Default setting is 800 ppm (parts per million in atmosphere). Normal atmospheric CO
2
centration is 400 ppm. Range: 100–2000 ppm.
Set P-band, default setting is 200 ppm. Range: 50–2000 ppm.
Set I-Time, default setting is Off. Range: Off/1–120 sec.
• Activate or deactivate RH sensor. Default setting is Off.
Set humidity setpoint in summer, default setting is 60%. Range: 1–100%.
Set humidity setpoint in winter, default settting is 50%. Range: 1–100%.
Set P-band, default setting is 10%. Range: 1–100%.
Set I-time, default setting is Off, Range: Off/1–120 sec.
• Select airflow level for Improving Air Quality. Range: Normal / High / Maximum.
• Select airflow level for Good Air Quality. Range: Low / Normal.
Moisture Transfer Control
Note:
Setting is available if heat exchanger type is set as Rotating. It is highly recommended to leave default
values for P-band and I-time. They should be changed only by installer and trained staff.
• Activate or deactivate relative humidity transfer functionality. Default setting is On.
• If Moisture Transfer Control is activated, configure:
| v1.1
RPM
-
-
sensor. Default setting is Off.
2
Pressure
Flow (CAV)
(VAV)
Supply air fan control sensor:
Pressure at 0V: 0-500 Pa, default
setting 0 Pa
Pressure at 10V: 0-2500 Pa, default
setting 500 Pa.
Extract air fan control sensor:
Pressure at 0V: 0-500 Pa, default
setting 0 Pa.
Pressure at 10V: 0-2500 Pa, default
setting 500 Pa
-
SAF K-Factor
range: 0–1000
EAF K-Factor
range: 0–1000
19
Configuration |
External
-
-
con-
2