This document introduces the features and characteristics of the T3300 series thermostat, including single-stage heat pump compatibility, zone system compatibility as a master thermostat, low battery indicator, Fahrenheit/Celsius display option, adjustable range from 45°F (4°C) to 90°F (32°C), accuracy within ±1 degree, adjustable temperature differential of 0.5-1.5 degrees, low temperature freeze protection, etc.
This manual provides instructions for the installation and operation of the Aprilaire Model 8334 electronic thermostat. It details safety precautions, wiring connections for various HVAC systems, and step-by-step procedures for mounting the device and connecting wires to the terminal strip.
| Voltage | 24V AC |
|---|---|
| Maximum Voltage | 30V AC |
| Temperature Range | 45°F (4°C) to 90°F (32°C) |
| Accuracy | + 1 degree |
| Temperature Differential | .5 — 1.5 degree |
| Freeze Protection | 40°F (4°C) |
| Heating Shutdown | 90°F (32°C) |
| Battery Type | 2 AA batteries |
| Warranty Period | 2 years |
Do not install on voltages higher than 30V AC.
Press both V and A buttons at the same time and hold for one second, then press either button to adjust.
Replace the batteries.
The unit is warranted for two years from the date of installation.