Brochure

Universal Digital Setpoint Temperature Controls
DST-900 DST-902 - One Stage DST-922 - Two Stage
AZEL AZEL
TECHNOLOGIES INC.TECHNOLOGIES INC.
APPLICATIONS:
The DST-900/DST-902/DST922 be used for a
wide variety of applications:
§ Tank Heating
§ Slab thermostat for radiant floor heating
§ Boiler control (used as a thermostat)
§ Space and return air temperature control
§ Condenser fan cycling
§ Milk coolers, Chillers
§ Cooling tower pump control
§ Refrigerated warehouses
§ Beer and beverage coolers
§ Refrigerated display cases
§ Walk-in and reach-in refrigerators
§ Other applications: research, science, laboratory,
education, aquarium, hydroponics, pools and
more..
DST control series are microprocessor-based electronic setpoint
temperature controls, designed to provide on/off controls (SPDT relay outputs)
for residential/commercial heating, cooling, air conditioning and refrigeration.
The DST-900/DST-902 is a One Stage Digital Setpoint Control to drive a
relay(DST-902 comes with two relays) in order to reach a preset temperature
value. The DST-922 is a Two Stage Digital Setpoint Control to drive two relays
according to two different temperature values. The controllers are available with
off cycle defrost (compressor switching OFF). They are equipped with a Digital
display that provides a constant readout of the sensor temperature and can be
used to view the setpoint as well as the other programmed settings. The front
buttons allow the user to easily and accurately select the set point temperature,
differential and heating/cooling mode of the operation. This reliable and versatile
control has a very wide setpoint range, an adjustable differential and time delay
that makes it applicable in many different applications. A universal 10K ohm
sensor P-01 is supplied with the control. This solid state temperature sensor
probe can be extended up to 500 feet. DST control series were conceived on
purpose to be installed on switchboards, panel boards, heating/cooling units and
other applications.
FEATURES:
§ Reliable Digital Electronic Accuracy
§ Easy-to-Read Digital Display which displays sensor
temperature and functional status. It also allows precise
setpoint and differential settings
§ Simple programming of setpoint temperature, differential
and cooling/heating modes. Setpoint can be adjusted easily
wihout going into programming mode.
§ Wide adjustable setpoint with temperature range from -39 to
248°F ( -39 to 120°C) and differential from 0 to 18°F (0 to
10°C). This enables the user to optimize the system
performance for any applications. A tighter differential can
be achieved (eg. 1F or 1C) than conventional
electromechanical controls
§ Selectable decimal point or unit resolution
§ LED indicates output relay status
§ Anti-Short Cycle Delay to ensure the output relay remains
off for up to 254 secs. This would avoid unnecessary hard
start and equipment wear
§ Cooling applications include automatic defrost timing as
well as manual defrost
§ User selectable Celsius or Fahrenheit scales
§ Adjustable temperature offset to compensate any deviation
from the real temperature value
§ Lockout switch to prevent tempering by unauthorized
personnel
§ Remote temperature sensor which can be extended to 500ft.
§ Easy installation
AZEL AZEL
DST-900E/902E/922E
DST-900PR/902PR/922PR