Product Overview

DST-777 SINGLE STAGE /DUAL STAGE SETPOINT TEMPERATURE CONTROL
APPLICATIONS:
The DST-777can 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..
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FEATURES:
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Reliable Digital ElectronicAccuracy
feature allows instant setpoint adjustment without
entering programming mode.
Easy-to-Read Dual Digital Display with backlit which displays
sensor temperature and setpoint simultaneously, functional
status and control settings. It also allows precise setpoint and
differential settings
Simple and user-friendly programming of setpoint temperature,
differential and cooling/heating modes
EEPROM memory retains control settings in the event of a power
failure
Wide adjustable setpoint with temperature range from -40 to
240°F and differential from 1 to 100°F. This enables the user to
optimize the system performance for any applications. A tighter
differential can be achieved (eg. 1°F or 1°C) than conventional
electro mechanical controls
Advanced PWM (Pulse Width Modulation) Control to achieve high
control accuracy on single stage models.
Choice of one or two stage models
One or two SPDT relay outputs. Model: DST-7772(two stage) can
handle one or two sensor inputs with two setpoints. When using
two sensor inputs, each setpoint can be corresponding to one
relay output. (Two units in one control)
LED indicates output relay status
Adjustable Anti-Short Cycle Delay to ensure the output relay
remains off for up to 20 minutes. This would avoid unnecessary
hard start and equipment wear
Selectable Fahrenheit or Celsius scales
Selectable Heat or Cool modes
Maximum and minimum memory for sensor temperature
Lockout switch to prevent tempering by unauthorized personnel
Remote temperature sensor which can be extended to 500 ft.
Sensor Failure and out of range Indication
Easy installation and setup
Backlit option:Auto (30 sec.)/OFF/ON
Power surge protection
QuickSet
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SPECIFICATIONS:
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Setpoint Temperature Range: -40 to 240°F(-40 to 116°C)
Temperature Display Resolution: 0.1°F/0.1°C
Differential Adjustment: 1 to 100°F(1 to 38°C)
Anti-Short Cycle Delay: 0 to 20 min. (1-Minute increments)
PWM Cycle Length: 30 to 1500 sec. (10-Second
Increments)
PWM Differential: 3 to 50°F (2 to 25°C)
Accuracy: ±1°C / ±1°F
Input: 10K ohm thermistor probe(included): P-01 (designed
for strap on a pipe or insert into a temperature well)
Operating Voltage: 120 or 240 VAC, 50/60Hz
Relay: 1 or 2 x SPDT, 120VAC, Full Load 10A, 1Hp
Enclosure: Flame Retardant Plastic 94V0
Weight: 3.0 lbs
Dimension: 6 3/8”(W) x 6 5/8”(H) x 2 3/4”(D)
MODEL DESCRIPTION
DST-777S Single stage setpoint control
DST-777D Single stage setpoint control with
two relay switches
DST-7772 Two stage setpoint control with
two relay switches
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Sheath: Copper
Lead: 10” of 20 AWG heat resistence wire
Dimension: 3/8" OD x 13/16" length
Operating range: -60 to 255 F (-50 to 125 C)
SenSor: 10K ohm @ 77 F (25 C ± 1%) thermistor
SPECIFICATIONS:
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UNIVERSAL SENSOR PROBE (THERMISTOR)
The Azel Sensor Probe is engineered to ensure long life
and rapid response. It is designed to strap on a pipe or insert into a
temperature well. P-01 is specially designed for use with DS-60
and other controls that require 10K ohm thermistors.
Model: P-01
P.O. Box 53138, 10 Royal Orchard Blvd.
Thornhill, Ontario, Canada L3T 7R9
Ph: 905-764-8809 Fax: [phone]
Email: [e-mail]
www.azeltec.com
AZELAZEL
TECHNOLOGIES INC.TECHNOLOGIES INC.
DST-777 series controls are microprocessor-based electronic one or two stage setpoint temperature controls, designed to provide one
or two on/off controls (Single-Pole Double-Throw(SPDT) relay output) for residential/commercial heating, cooling, air conditioning and
refrigeration applications.
The DST-777 is equipped with a Dual Digital display with backlit that provides a constant readout of the sensor temperature and setpoint
simultaneously 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. feature allows instant setpoint adjustment without entering
programming mode. 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. The single stage models have Pulse Width Modulation (PWM) to prevent overshoots and
undershoots in slow responding systems with large thermal mass such as pools or slabs. A sensor probe P-01 is supplied with the control.
This solid state temperature sensor probe can be extended up to 500 feet.
QuickSet