HEX390man & HEX390digi - Operating Instructions, Installation Instructions, Wiring diagrams Sept 2015
4
•
Optional User System On/Off
is available in User Menu, indicated by “OFF”
on unit display.
•
Optional Filter Timer
measures the hours run by the fan and gives a flashing
display when the filter needs to be cleaned/replaced.
•
Clock function
has battery back-up in the event of a power failure. Time can
be set/adjusted by pressing mode and ↓ buttons together until “Entering
Menus” then “Set Clock” appears. Time can then be adjusted using up & down
buttons, once correct time is set, press “mode” to save new setting.
•
Optional Attic Damper Kit.
A diverting branch can be attached to divert the
intake from the attic to the cooler outside air. Press mode and up arrow
together. ‘
Entering menus’
will display, hold until ‘
Damper is on’
or ‘
Damp
er is off’,
then
‘
Change damper? ON
’ or ‘
Change damper? OFF
’ displays. Use the up arrow to
change between the two settings.
Digital Controller
User Operating Instructions
Congratulations on purchasing a HEX, Heat Recovery Ventilator with Digital
Controller. This controller allows the user to adjust fan speed from high to low
(fan limits are set in the commissioning menu to suit the size of house and
system layout).
The controller will automatically shut down in summer if outside air temperature
(OS) exceeds 27°C and home is warm.
There are a number of other features available at time of installation which will
need to be discussed with the installer when the unit is commissioned (see Digital
Controller Setup instructions p6-9). They include:-
•
Optional supply air boost
heater
(when heater fitted) is
controlled automatically when
outside air temp (OS) is less
than 12°C and home is cold.
This is indicated by “H” with
bar symbol in the unit display.
Heat is controlled over a
proportional band so that as
OS gets colder, heater output
increases to maximum.
•
Optional winter off
mode
shuts down the fan
automatically when outside
temperature (OS) is less than
2°C. This is indicated by
“winter” on the unit display.
Fan Speed
Status
Outside Air
Temp (OS)
Operating
Mode
Inside Air
Temp (IS)
Fan Speed
Increase
Time
Fan Speed
Decrease
Mode
button
Heater option
not available for
HEXdigi-NH
