Vent-Axia Sentinel Kinetic B Left Installation & Commissioning Manual - page 37
Commissioning
Sentinel Kinetic MVHR Installation & Commissioning
37
Proportional 1 Screen
The Proportional 1 screen enables the conditions of the
proportional sensors to be set.
The unit can receive a 0-10 V proportional signal from
either a humidity, CO
2
or temperature external sensor,
when connected to terminals P1.
By default, the Proportion 1 input is set for a humidity
sensor operation.
When you have selected the sensor type, screens for
the appropriate boost and normal limits are displayed.
Press
and use the
and
buttons to change the
selection (Humidity-default, CO2, Temperature).
When the input signal is below the ‘Normal Limit’, the
unit runs at low / normal airflow. When the signal is
above the ‘Boost Limit’, the unit runs at boost airflow.
Between these limits the unit runs at a proportional
airflow.
Proportional 1
Humidity
For a humidity sensor, a percentage value must be
entered for boost and normal settings. For range and
default values, see Table 2 below.
P1 Boost Limit
70 %
P1 Normal Limit
60 %
For a CO
2
sensor, a figure (in ppm) must be entered for
boost and normal settings. For range and default
values, see Table 2 below.
P1 Boost Limit
2000 ppm
P1 Normal Limit
1000 ppm
For a Temperature sensor, a figure (in degrees C) must
be entered for boost and normal settings. For range
and default values, see Table 2 below.
P1 Boost Limit
27 C
P1 Normal Limit
17 C
Table 2: Boost & Normal Limits – Defaults and Adjustment Range
Sensor
Humidity
CO2
Temperature
Default (%)
Range (%)
Default (ppm)
Range (ppm)
Default (°C)
Range (°C)
Boost limit
70
25-90
2000
200-2000
27
10-35
Normal limit
60
25-90
1000
200-2000
17
10-35