| Supply Voltage | 20 to 30 Vac |
| Frequency | 50 Hz; 60 Hz |
| Electrical Connections | UWP Mounting System |
| Electrical Ratings | 20 to 30 Vac |
| Operating Temperature | 37 F to 102 F |
| Ambient Temperature | 32 F to 120 F |
| Operating Humidity | 5 to 90% RH, non-condensing |
| Mounting | UWP Mounting System |
| Application | Conventional and Heat Pump systems |
| Includes | Thermostat, UWP mounting system, Installation (J-box) adaptor, |
| Dimensions | 3.86 in. High x 5.36 in. Wide x 1.08 in. Deep |
| Stages | Up to 1 Heat/1 Cool Heat Pumps; Up to 1 Heat/1 Cool Conventional Systems |
| Switch Positions (System) | HEAT-OFF-COOL-AUTO |
| Switch Positions (Fan) | AUTO-ON |
| Shipping and Storage Temperature Range (F) | - 20 F to 120 F |
| LEDs | LED Back Light |
| Power Method | Battery or Hardwired |
| Color | White |
| Display | Medium display, Soft Key Controls |
| Accuracy (F) | ±1 F |
| Differential Temperature (F) | ±1 F |
| Switch Type | Relay |
| Programmability | Non-programmable |
| Terminal Designations | RC, R, C, W, O/B, Y, G, K |
| Display Size | 3.79 sq. in. |
| Temperature Control Mode Selections | Ambient Air Temperature |
| Changeover | Auto or Manual |
| Setting Temperature Range (F) | Heat: 40 F to 90 F; Cool: 50 F to 99 F |
| Cool Current | 0.02 A to 1.0 A running |
| Heat Current | 0.02 A to 1.0 A |
| Fan Current | 0.02-.05 A |
Description
The Resideo TH3110U2008/U is a T3 Pro wall thermostat.
Non-programmable. One setpoint, changed by hand. That is the right choice for a rental, a shop, a space on a fixed occupancy, or any job where a schedule would just get overridden. Fewer things to explain at handover, and nothing to reprogram after a power event.
Where it sits in the range. Resideo builds these in tiers, and the tier number is the amount of control you get, not the build quality. T1 and PRO 1000 are single-stage and non-programmable — set it and leave it. T3 and PRO 3000 add a digital display and more staging. T4 and PRO 2000 add scheduling. T6 covers multi-stage and heat pump work, with a Smart version that adds Wi-Fi. T10 Pro is the top of the line, with RedLINK and remote room sensing. PRO 1000, PRO 2000 and PRO 3000 are the older names for the same tiers as T1, T4 and T3 — if you are matching what came out of the wall, the PRO number and the T number can be the same generation of product under two labels.
Before you order. Match the thermostat to the equipment, not to the room: count the heating and cooling stages the system actually has, and confirm whether it is a heat pump or a conventional system, because the two wire differently at the thermostat. A unit rated for more stages than you have will work; one rated for fewer will not run the equipment you own. If you are replacing a Honeywell Home unit, the part number carries over — Honeywell Home thermostats are made by Resideo, and the legacy numbering is the same.
Related: Non-programmable thermostats · Programmable thermostats · Smart thermostats · All Resideo
- Brand: Resideo
- Manufacturer Part #: TH3110U2008/U
- UPC: 194159004368
- Category: Thermostats