2
Specications
Input:
• Voltage: 24 VAC (18-30 VAC)
• DC Power: 3.0 VDC (2 “AA” alkaline batteries included)
Output:
• Maximum: 1 amp per terminal (3 amp total for all terminals)
• Temperature control ranges: 45°F to 90°F (7°C to 32°C)
Accuracy: ± 1°F (± 0.5°C)
• System configurations: Multi-stage – Two-stage heat or two-stage cool
• Terminations: RH, RC, W1, W2, Y1, Y2, G, C
SET
ROOM
LO BAT
DIFF
Low battery indicator
Temperature
differential setting
Room temperature
Room temperature
setpoint
Important Safety Information
• Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the off
position before installing, removing, cleaning, or servicing this thermostat
• Read all of the information in this manual before installing this thermostat
• This thermostat should be installed only by a professional contractor
• This is a 24 VAC low-voltage thermostat; do not install on voltages higher than 30 VAC
• All wiring must conform to local and national building and electrical codes and ordinances
• Do not short (jumper) across terminals on the gas valve or at the system control to test installation; this will
damage the thermostat and void the warranty
• Do not switch system to cool if the temperature is below 50°F (10°C) This can damage the air conditioning
system and may cause personal injury
• The thermostat will not control your heating/air conditioning system without power; it requires two charged
“AA” batteries for thermostat operation and a continuous 24 VAC circuit for proper system control
• Replace batteries every year or when the low battery indicator appears on the thermostat’s display
• Use this thermostat only as described in this manual
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