Technical data

ManualsBrandsAIREDALE ManualsHousehold AppliancesULTIMA 2000

Precision Air Conditioning

Technical Manual : 6258867 F 07/2012

Controls

As standard the units are supplied with an microprocessor controller

connected to a 4x20 back-lit LCD display keypad.

The microprocessor controller can be linked together locally to provide

run/standby operation. Windows based supervisor software is also available for local or

remote networking. This modular approach provides great flexibility while at the same

time reducing installation and maintenance costs.

A real time clock card is fitted as standard to provide date and time stamping on alarms.

GENERAL

The display keypad features a simple array of keys to navigate through the in

built menus.

A combined temperature and humidity sensor is mounted in the return air with an option

for remote mounting within the conditioned space.

The temperature sensor is a NTC type thermistor accurate up to +/- 0.25°C and the

humidity sensor accurate to +/- 3%.

The Airedale microprocessor senses the Return Air conditions and maintains the Return

air Temperature and Humidity conditions by controlling cooling, heating, humidification

and dehumidification outputs accordingly. The supply air temperature is monitored by the

controller providing an option of Supply Air temperature limiting.

TEMPERATURE

CONTROL

The microprocessor monitors and displays the following values:

MONITORING

· Return Air Temperature

· Return Air Humidity

· Supply Air Temperature

· Condensing Pressure

(Optional on [DX] units only)

· Glycol Temperature

(Glycol free cooling units only)

· Chilled Water Flow Temperature

(Chilled Water units only)

· Chilled Water Return Temperature

(Chilled Water units only)

An Visual alarm will be generated under the following conditions:

ALARM HANDLING

· Return air temperature high limit

· Return air temperature low limit

· Return air humidity high limit

· Return air humidity low limit

· Supply air temperature high limit

· Supply air temperature low limit

· Glycol temperature low limit

(DX free cooling units only)

· Frost protection low limit

(LPHW option only)

· Airflow failure

· Compressor failure (DX units only)

· Low pressure trip (DX units only)

· Electric Heating Overheat cut-out

· Filter change alarm

· Manual override

· Fire/smoke alarm

· Water Flood

· Power fail reset

· Communications failure

· Humidifier alarm (low production, no

water supply etc)

· Maintenance - fan and compressor

(once hours run limit exceeded)

ALARM LOG

The controller logs and allows viewing of the last 100 conditions recorded in descending

chronological order through the keypad display

GENERAL