Airedale SmartCool 11-233kW - Manual (Page 29)

Precision Air Conditioning SmartCool
TM
– D
Precision Air Conditioning
29
Installation, Maintenance and Commissioning Manual :6877419 02/2013
Installation Data
Chilled Water System The chilled water coil is factory pressure tested to 20 barg. The chilled water system
maximum operating pressure is 10 barg.
The chilled water pipework external to the unit is required to be pressure tested to ensure
water tightness.
The chilled water coils need to be bled of air prior to unit operation. The bleed valve is
positioned at the top of the coil; with access through the front door.
For the valve working pressure, please contact Airedale.
IMPORTANT Air in a chilled water system may reduce the cooling performance of the unit. The required
pump power input would also be increased.
Humidification
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 is 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 ( 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)
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