Airedale SmartCool 11-233kW - Manual (Page 25)

Humidifier - Intelligent Modulation
Humidification shall be provided by an electrode boiler. The sealed humidifier design shall ensure that only clean sterile
steam is supplied to the conditioned area and corrosive salts and minerals are held in the disposable bottle. The steam
shall be distributed through a sparge pipe fitted to the coil assembly.
Featuring modulating capacity output control as standard, the system shall provide continuous modulation of steam
output in response to a proportional control signal. The output control shall range from 20%-100% of the humidifier rated
value and be designed to give an approximate steam output of +/- 5% at 25°C (at the sensor), thus ensuring precise
control of the conditioned space.
The cylinder operating life time shall be automatically optimised via the integrated water conductivity sensor, which
combined with the controls shall monitor and regulate the water refill cycle to reduce excessive salt deposits and the
progressive wear of the cylinder.
All humidifier parameters and alarms shall be accessible and adjustable via the microprocessor display keypad unit,
main features shall include not less than:
• Supply water conductivity (µS/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)
Water Conductivity & Cylinder Type
Three different cylinders shall be available which correspond to the supply water conductivity.
The cylinder type shall be matched with the standard conductivity of the supply water to ensure optimum performance
and to increase the life span of the cylinder.
1 Low Conductivity (Soft Water) 100 to 350 µS/cm
2 Standard Conductivity (Moderate / Hard Water) 350 to 750 µS/cm
3 High Conductivity (Very Hard Water) 750 to 1250 µS/cm
Conductivity is a measure of the ability of water to pass an electric current, measured in micro Siemens / centimetre (µS/
cm).
As standard the humidifier shall be fitted with the standard conductivity cylinder which shall cover the majority of water
supplies.
Where the water conductivity is known, please specify at order.
For further details please contact Airedale.
Precision Air Conditioning SmartCool™ 6 - 200kW
25 SmartCool 6 - 200kW Chilled Water Technical Manual 7674716 V1.1.0_04_2014
Introduction