Vent-Axia Sentinel Kinetic B Left Installation & Commissioning Manual - page 9
Installation
Sentinel Kinetic MVHR Installation & Commissioning
9
Sentinel Kinetic Range Summer By Pass Models.
The Sentinel Kinetic B, BH, Plus B, Plus BS and S BH are fitted with a Summer By Pass (SBP) and will provide
energy-free cooling when the house temperature and ambient temperature allows.
Note that the volume of air provided by this ventilation system is a fraction of that required for space heating or
space cooling and will not in itself be sufficient to cool a room. It will however, provide a contribution and make a
difference.
There are three operating modes, Normal, Evening Purge and Night-time purge.
Normal Mode.
Air flow rate is determined by sensors, boost and timing settings, otherwise is normal rate.
If the room is warmer than the set (shown as "indoor") temperature (i.e. you need the room to be cooler) and the
outdoor air is cooler than the actual room temperature (i.e. the outdoor air could cool your room) then the SBP will
open and the unit will supply cooler air to your room.
Note that the above only applies whilst the outdoor air temperature is above 14 C (adjustable) in order to prevent
cold draughts.
The set ("indoor") temperature should be set 2 or 3 degrees higher than the central heating thermostat and 2 or 3
degrees below any air conditioning thermostat if fitted. This will prevent any clash between the separate systems.
Evening purge Mode.
Intended for use as the outdoor temperature cools in the evening, but reverts to normal control after a set time so
that any increase in noise is avoided overnight.
Air flow rate is always at boost.
The bypass closes and the purge stops if the temperature conditions described in Standard Mode are no longer
met or 5 hours after the bypass opened.
Night-time purge Mode.
Intended for use as the outdoor temperature cools in the evening and continues through the night when cooling is
a higher priority than any increase of noise. Note that the air noise in your system is influenced by the ducting
design and layout and the size and type of vents used in the rooms. If improvements are required speak to your
installer.
Air flow rate is boost.
The bypass closes and the purge stops if the temperature conditions described in Standard Mode are no longer
met.