Isolation - Before commencing work make sure
that the unit and Nuaire control are electrically
isolated from the mains supply.
Fig 3. Dimensions.
using appropriate fixings. During the operation, connect
the outlet spigot to the ductwork, if applicable, and feed the
electrical cables through the grommets into the connection
recess.
Wire the supply and the remote switch into the unit
terminal strips (see wiring diagrams fig 4).
Setting the thermostat
The thermostat control knob is located on the top face of
the unit. Advance the thermostat control knob through the
ambient room temperature position (you can detect this as
a gentle click around 20
o
C position). Set the control in
excess of the ‘click’. This will trigger the fan to operate on
boost when the room temperature increases.
When the ambient room temperature increases beyond the
chosen thermostat set point, the unit will automatically
switch to the boost speed -the auto boost speed factory
set at HIGH (full) but can be changed to LOW (half) by
relocating a link on the circuit board. (See wiring in Fig. 4).
Electrical connection
The installation must be carried out by a suitably qualified
and competent person and conform to all relevant
regulations.
The electrical supply to the unit must be isolated by a
suitable local double-pole isolating switch (by others) for
maintenance purposes.
Note that the mains wiring for the unit MUST be from a
fixed wiring installation.
The unit MUST be earthed.
Connect the incoming supply to the mains terminals.
Connect the remote control switch (six wires 0.5mm
2
500V
ac rated) ensuring connections match at the switch.
Replace cover plate.
Testing after installation
Manual operation
Set the remote switch to MANUAL and HIGH.
Check the unit is functioning satisfactorily by switching on
the mains supply.
The unit should start and run on the HIGH (full speed)
Select LOW speed and check for LOW (half speed) operation.
Switch off the mains supply.
Automatic operation
Select AUTO on the remote switch. In this mode the unit is
controlled by the integral thermostat. See ‘Setting the
thermostat’
The fan will run continuously providing a ‘trickle
ventilation’.
Reducing the thermostat control setting temporarily will
trigger the fan for test purposes.
The fan should switch to the boost speed.
Reset the thermostat as detailed in previous paragraphs.
2
16. 06. 15. Leaflet Number 671116
Installation and Maintenance
HPKF High Performance Kitchen Fan
