NuAire ILM+ P Series, User Manual

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OPERATION RULES
The fan is rated for connection to single-phase 220–240 V / 50/60 Hz power mains. AC
The fan is designed for continuous operation always connected to power mains.
Air motion direction in the system must match the pointer on the fan casing.
Ingress protection rating IPX4.
The fan is rated for operation at the ambient temperature ranging from +1 °C
+45 °C. up to
The transporting medium temperature must not exceed +60 °C.
ELECTRONICS CONTROL LOGIC
The fan with the timer T is turned into operation after control voltage is supplied by the external switch
(e.g., by the light switch) to the input terminal LT. After the control voltage is off the fan continues to
operate within the timer period set by the timer from 2 to 30 minutes.
To adjust there off-delay timer rotate the potentiometer control knob T clockwise to increase and
counter-clockwise to decrease the off-delay time respectively (fig. 3 ).
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Warning! The timer circuit is under mains voltage. All adjustments are allowed after disconnection from
power mains. The fan delivery set includes a specially designed plastic screwdriver for fan settings
adjustments. Use the screwdriver to alter the turn-off delay time or the humidity threshold.
Do not use a screwdriver, knife, etc. for adjustment operations not to damage the circuit board.
The fan model
U(U1) (fig. 3 ) is equipped with electronic TSC module (speed controller with ILM + 2
electronic thermostat) for automatic fan speed (air flow) control depending on air temperature.
The electrical compartment incorporates 2 control knobs:
for setting the motor speed;
for setting the electronic thermostat.
The fan cover incorporates a LED-light thermostat indicator.
To adjust the thermostat set point rotate the thermostat control knob clockwise to increase the set
point and counter clockwise to decrease the thermostat set point. To adjust the fan speed (air flow) rotate
the speed control knob in the same way.
The fan has two operating logics - temperature-based and timer-based operating logics.
temperature-based operating logic
U): ( LM I +
This logic is used to keep air temperature to within 2 °C. In this case the fan switches are rare.
The motor sets to maximum speed as the temperature reaches the thermostat set point.
The fan runs with the speed set by the speed controller if the temperature drops 2 °C below the set point or
if the initial temperature us below the set point.
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