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WARNING
1. 120 Volts may cause serious injury from electrical shock. Disconnect electrical power to the HVAC equipment before
starting installation. This thermostat is not a 120-volt (line voltage) device.
2. Improper installation may cause serious injury from electrical shock. This product must be installed by a qualified
heating and air conditioning contractor in accordance with NEC Standards and applicable local and state codes.
3. Mercury is toxic and may be hazardous to health. Any replaced thermostats containing mercury must be disposed of
properly. Contact local authorities for disposal information.
Read this Installation Manual before beginning installation of the Aprilaire
®
8570 Thermostat. For questions call
Research Products Corporation at (800) 334-6011.
MODEL 8570 SPECIFICATIONS
Electrical
Thermostat Voltage: 24-volts ± 20% AC or DC
Total Load Current: 5A
Single Output Load Current: 2A
Thermal
Operating Range: 32°F – 99°F (0 C – 37 C)
Display Accuracy: ±1°F between 60°F and 80°F, ±2°F outside this range
Control Accuracy: ±1°F
Control Range Heat: 40°F – 88°F (4 C – 30 C)
Control Range Cool: 42°F – 90°F (6 C – 32 C)
Heat/Cool Deadband: Adjustable 2° or 5° F or C
1st Stage Differential: Adjustable 1°F – 4°F (1°F default)
2nd Stage Differential: Adjustable 1°F – 4°F (1°F default)
Temperature Offset: Adjustable 1°F – 4°F
SAFETY INSTRUCTIONS