Technical data

Precision Air Conditioning

Technical Manual : 6258867 F 07/2012

General Description

OPTIONAL EXTRAS - GENERAL

This feature is included as part of the Intelligent Head Pressure Control option, as

detailed above and comes as standard when the EEV options is selected.

Specifically designed for night time operation as optimum low noise levels are achieved

with reduced ambient temperature and room loads, this feature is also ideal for residential

and other outdoor noise critical applications.

Low Noise Feature for

Condenser Fan

(A & X Models)

Initiated by setting the microprocessor programmable time clock, the head pressure set

point changes from the standard 14 Barg (203 psig) to 22 Barg (319 psig), reducing the

outdoor unit fan speed and corresponding operating sound levels.

Humidification is provided by an electrode boiler. The sealed humidifier design ensures

that only clean sterile steam is supplied to the conditioned area and corrosive salts and

minerals are held in the disposable bottle. The steam is distributed through a sparge pipe

fitted to the coil assembly.

Featuring modulating capacity output control as standard, the system provides

continuous modulation of steam output in response to a proportional control signal. The

output control range is 20%-100% of the humidifier rated value and is designed to give an

approximate steam output of +/- 3%, at the sensor, thus ensuring precise control of the

conditioned space.

The cylinder operating life time is automatically optimised via the integrated water

conductivity sensor, which combined with the controls monitors and

regulates the water refill cycle to reduce excessive salt deposits and the progressive wear

of the cylinder. For further details, refer to Design Features & Information.

Humidifier - Intelligent

Modulation

All humidifier parameters and alarms are accessible and adjustable via the

microprocessor display keypad unit, main features include:

· Supply water conductivity (mS/cm)

· Actual steam output (kg/h)

· Required steam output (kg/h)

· Actual current rating (A)

· Required current rating (A)

· Status mode (Start Up, Running, Filling, Draining)

GENERAL