SZ1031
Programmable 365-Day Thermostat
Description
The SZ1030 Series has a 365-day time clock.
The SZ1031 and SZ1035 are designed to control
conventional heating and cooling. The SZ1033 is
designed for heat pumps and can be converted to
conventional mode in programming.
Features:
• Stand-alone or network operation
• 365-day time clock with 2 holiday schedules with
automatic leap year and daylight savings correction
• Discharge air sensor input with high and low limits
• Outdoor air sensor input with heating & cooling lockouts
• The SZ1031 offers up to 3 heating and 2 cooling stages,
or 2 heating and 3 cooling stages
• The SZ1035 offers 2 heating stages, 2 cooling stages
and 2 independently programmable stages for heating
and/or cooling
• The SZ1033 offers 2 compressor stages and 2 auxiliary
heat stages, with a configurable reversing valve
•Adjustable delay on power-up and start-up for soft starts
•P+I control option
• Smart recovery
• No backup battery required
• Minimum on/off times for HVAC equipment protection
• 32-character LCD display
• Six status LEDs
•Remote room sensing capability
• User setpoint adjustment limits
•Local and remote override capability
•System and fan switching with access lockouts
• Auxiliary time clock output (economizers)
•Fan interlock safety option
• Filter service input and indication
•Equipment monitoring inputs and indication
•External time clock input
•Energy management input for setpoint shift
•Access to programming or schedule may be locked out
or limited with the use of an access code
• Fahrenheit or Celsius temperature display
Call to order:
1-800-288-9383
Specs & Docs
Specifications:
General
Accuracy:
+/- 1ºF at 75ºF
Display resolution:
+/-1°F (0.6°C)
Display:
32-character LCD
Programming:
Front panel keypad or
EIA RS485
interface
Communications:
RS485, half duplex
Memory backup:
Non-volatile EEPROM,
no battery required
Program Setting:
2 events per day with 7 days per
week and 2
holiday schedules (12 periods of up
to 99 days each)
Override:
Programmable from 0 to 255 minutes
Environmental
Operating temperature:
32 to 131°F (0 to 55°C)
Operating humidity:
0 to 100% RH,
non-condensing
Storage temperature:
14 to 140°F (-10 to 60°C)
Electrical
Supply voltage:
24 V
AC
+/- 20%
Inputs:
Built-in and r
emote platinum RTDs,
momentary over
ride and three digital (dry contact)
Range: Room Temp: 40 to 90
°F (built-in or
remote)
Outdoor Air Temp: -40 to 160°F (remote)
Discharge Air Temp: 0 to 150°F (remote)
Outputs:
The SZ1031 & SZ1033 have 7 digital
(SPST dry contact, 24 VAC @ 2 A). The SZ1035
has 8 digital (SPST dry contact, 24 VAC @ 2 A
max).
Common mode rejection:
100 db @ 60 Hz
Power Consumption:
8 VA max.