HEX390man & HEX390digi - Operating Instructions, Installation Instructions, Wiring diagrams Sept 2015
7
Internal On/off thermostat (optional)
The optional thermostat can be set
so the unit turns off if incoming air
exceeds the set point (eg if thermostat
is set to 30, the unit will turn off if the
incoming fresh air is above 30ºC).
HEX Attic box
Temperature sensor
mounted in fresh air inlet
Temperature
sensor wire
plugs in here
9. Thermostat for Digital Controller
The thermostat for the digital controller is placed into incoming fresh air flow,
through the pre-drilled hole, and fixed with the cable tie.
It is then plugged into the attic box as pictured above.
Cat5 cable to digital
wall controller
For digital controller, mount
with pack glands downwards
Terminate
separately
the grey &
brown wires
from the
HEX unit
8. Mount Attic box
Attic box can be mounted on the unit or anywhere in the attic. T
he hall
controller - digital or manual 3 speed - will be shipped inside the attic box.
Electrical supply must be installed by a suitably qualified tradesperson
as per the schematics on pages 13, 14 & 15.
