AquaFREE system - Airconwarehouse.com
AquaFREE system - Airconwarehouse.com
AquaFREE system - Airconwarehouse.com
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Benefits of <strong>AquaFREE</strong>.<br />
Functionality Benefits:<br />
1.4.5. Noise reduction<br />
<br />
<br />
HITACHI <strong>AquaFREE</strong> <strong>system</strong>s have been designed to reduce noise to a minimum.<br />
The <strong>AquaFREE</strong> module has been desigend rigorously to reduce the installation’s<br />
noise to 28 dB (A). Because HITACHI has used all of the technology it disposes of for<br />
developing its products, <strong>AquaFREE</strong> is one of the most silent <strong>system</strong>s on the market.<br />
The <strong>com</strong>pressor’s features are as follows:<br />
− Scroll type<br />
− The use of neodymium magnets improves the performance at low frequencies.<br />
− 2 parts rotor reduces electromagnetic noise.<br />
The fan’s features are as follows:<br />
− Uses DC motors<br />
DC motor<br />
Efficiency increased by 40%.<br />
(Motor input halved)<br />
Motor Efficiency (%)<br />
AC motor<br />
Revolutions per Min. (rpm)<br />
− Control by means of PWM (pulse width modulation). This control <strong>system</strong> allows to<br />
control and adjust the fan’s startup and stop rate.<br />
30° 120° 60°<br />
120°<br />
Electricity<br />
Time<br />
120°<br />
Current<br />
Voltage<br />
180°<br />
Electricity<br />
Time<br />
180°<br />
Current<br />
Voltage<br />
180º RECTANGULAR WAVE PWM CONTROL<br />
By <strong>com</strong>bining these elements the <strong>system</strong>’s electromagnetic noises have been<br />
reduced.<br />
page 24<br />
TCGB0042 rev.0 - 01/2007
Change language