Product Overview

Azel Technologies introduces 500 series electronic programmable thermostat that utilizes the lastest digital technologies
for residential and light commercial systems. D-500 is designed
he large, easy to read LCD display with backlit makes the
thermostat easy to operate and simple to program.
for 24 Vac single-stage heating and cooling systems. D-502F is
designed to control the floor temperature in Hydronic Radiant Floor Heating Systems.
The 500 series can accurately control the temperature within one degree. Reliable permanent memory retains the
programmed settings in the event of a power failure. In addition, t
The 500 series programmable thermostat delivers maximum comfort and energy savings by automatically changing to
the preset temperature for various times of the day The energy use and costs can be reduced according to the program heat and
cool times as much as 33%. This programmable thermostat is better for the environment, since using less energy helps reduce
greenhouse gas emissions associated with energy production.
The Azel digital thermostat with its appealing design will allow you to replace inaccurate, old fashioned thermostats with
the new accurate and easy to read 500 series.
All Azel thermostats are backed by reputation for quality and reliability.
Stylish Design
with Function
and Performance
FEATURES:
§ Large temperature display screen with backlit for quick
easy readability.
§ Reliable Digital Electronic Accuracy
§ Attractive styling complements any decor
§ Separate schedules for weekdays and weekends (5-2
day programming) or 7 day by factory preset
§ 6/4 Program period(ON/OFF period) per day by factory
preset
§ Preprogrammed with a typical energy saving set-up.
§ Vacation hold
§ Temporary bypass unit next program
§ Comfort override by holding the new setting for
required hours
§ Permanent hold of new temperature setting without
programming
§ EEPROM Battery-free Memory backup means no re-
programming your schedule after power outage
§ Purge: Fan 90 seconds delay-off for use of residue
energy in pipe
§ Low Voltage (24 VAC) Systems
§ Display in °F or °C for added model flexibility
§ Selectable 12H/24H Format
§ Optional remote sensor for distant temperature
sensing and control
§ Auto-Change-Over between Heat and Cool modes
§ Copy function for programs setting
§ Remote ON/OFF control for commercial building
§ Contains NO Mercury
§ No Leveling Required
§ Only 2 wires needed to power thermostat, no need
to change battery in the future
§ Ease-of-use means fewer homeowner questions and
increased homeowner satisfaction.
§ Easy installation, setup and system checkout saves
time and increases installer productivity.
§ Save energy cost up to 33%
§ D-502F is supplied with remote sensor probe for
floor temperature control
±
1
°
F
ACCURACY
Save Energy
Cost up to
33%
Easy
V
iew Large
Display
Heating
& Cooling
System
Simple
to Program
Radiant
Floor Heating
System
Digital Thermostats
D-502F for Hydronic Radiant Floor Heating
D-500 for Heating and Cooling Systems
Programmable
Maximum comfort and energy savings