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2800 LAURA LANE • MIDDLETON, WI 53562 • (800) 288-9383 • FAX (608) 836-9044 • www.tcsbasys.com
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Communicating Thermostats
Communicating Thermostats
SZW123
Wireless Conventional Heating & Cooling
Thermostat with Heat Pump Mode
Product Manual
Description
The SZW123 is a microprocessor-based programmable
thermostat designed for conventional heating and cool-
ing applications with optional heat pump mode. The
SZW123 features a 7-day time clock.
Features
• Stand-alone or network operation
• Adjustable delay on power-up and start-up for soft
starts
• P+I control option
• Smart Recovery
• No battery backup required
• Built-in HVAC equipment protection
• 32 character LCD display
• 6 status LEDs
• Remote room sensing capability
• User setpoint adjustment limits
• Local and remote override capability
• System and fan switching with access lockouts
• Equipment monitoring inputs and indication
• External time clock input
• Access to programming or schedule may be locked
out or limited with the use of an access code
• Fahrenheit or Celsius temperature display
• Convertible to heat pump mode in programming
• Uses ZigBee protocol, IEEE 802.15.4 compliant
• Self-healing, "plug & play" mesh network
• 100mW output at 2.4 GHz
• 150 to 500 feet typical in building range
Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setting Clock & Schedule. . . . . . . . . . . . . . . . . . . . . . . 6
Program Options & Operating Features. . . . . . . . . . . . 6
Checkout & Troubleshooting . . . . . . . . . . . . . . . . . . . . 9
LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
Limiting Occupant Access . . . . . . . . . . . . . . . . . . . . . .
11
User’s Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
Mounting
The SZW123 is designed for wall mounting using two
#6-32 machine screws sheet metal screws, either over
a horizontally installed 2” x 4” junction box, or directly to
block or drywall.
For best results, the thermostat should be mounted on
an interior wall which reflects normal room environment,
at a height of approximately five feet from the floor.
Avoid areas exposed to direct sunlight, unusual heat
or cool sources, open doors and windows, unventilated
locations and hot or cold air from diffusers.
If using a remote room sensor, it should be mounted in
the manner described above. The thermostat may then
be mounted in an area which is accessible for adjusting
its settings.
Caution
: Remove power from thermostat
prior to mounting.
