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The Ai Plus is a powerful, intelligent home ventilation system that will change 
fan speed, heating elements and air valves according to environmental 
conditions. The same unit will suit any house size and control a full range of 
features all through the initial Drivaire installer setup.  Addition features can 
be added at a later date still using the same base system. The system has 
been designed to be “set and forget” and will carry on doing its job happily in 
the background keeping your home healthy! 

 

 

 

 To 

turn 

your 

system 

ON/OFF

 

 

To turn ON press and hold  

  for 2 seconds 

 

To turn OFF press and hold  

  for 2 seconds 

 
In standard “positive pressure” mode the unit will now display 

“Air ON” 

Your home will be ventilated with any solar heated air in this mode. 
 

 

 

 

To turn on supplemental 

HEAT

 (if heater fitted) 

 

Press 

SET

 button and release 

 

Arrow up or down through the power levels, when at the desired power level 
release the button then press 

SET

 again to store the setting 

 

Note: Power levels are stated in percentage of heating power 25%, 50%, 
75%, Max (i.e. if 75% is selected and 2kW heater is fitted, the output will be 
1.5kW) 

 

To set the room thermostat setting – press and hold the 

SET

 button until 

Room Heat Off

” is displayed. Arrow up or down to the desired temperature 

setting and release the button then press 

SET

 again to store the setting. 

 

 

 

 To 

set 

Heat Transfer

 (if transfer valve fitted) 

 

Press and hold the 

SET

 button until “

Set Warm Tfr

” is displayed. Arrow up or 

down to the desired temperature setting and release the button then press 

SET

 again to store the setting. The heat will start to transfer when the 

temperature at the source rises to this setpoint. 

 

This will set the temperature that the air valve will change and move air 
from the Woodburner or Heatpump to the remote parts of the house.  
 

 

 

 To 

select 

Cool Transfer

 (if transfer valve fitted) 

 

Press and hold 

MODE

 button until

 “Cool Tfr” 

is displayed. 

 

To set 

Cool Transfer 

 

Press and hold the 

SET

 button until “

Set Cool Tfr

” is displayed. Arrow 

up or down to the desired temperature setting and release the button 
then press 

SET

 again to store the setting. The cool air will start to 

transfer when the temperature at the source lowers to this setpoint. 

 

This will set the temperature that the air valve will change and move air 
from the Heatpump (when in cooling mode) to the remote parts of the 
house. 

 

 

 

 To 

Select 

Fresh Air 

(if fresh air valves fitted) 

 

Press and hold 

MODE

 button until

 “FreshAir” 

is displayed. 

 

To set 

Fresh Air 

 

Press and hold the 

SET

 button until “

FreshAir Off

” is displayed. Arrow 

up or down to the desired temperature setting and release the button 
then press 

SET

 again to store the setting. The system will change back 

to positive pressure mode (bringing air from your roof space) when the 
temperature lowers to this setpoint. 
 

 

 

 

To return to 

Auto Warm

 (normal mode) 

 

Press and hold 

MODE

 button until

 “AutoWarm” 

is displayed. 

 

 

 

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