Honeywell RCT8100 Programmable Thermostat Installation Manual

Honeywell RCT8100 Installation is Easy

Your new thermostat has been designed for fast and easy installation. Just follow the simple step-by-step instructions in the following pages.

  1. Identify your system type.
  2. Remove your old thermostat.
  3. Identify the wires.
  4. Mount the new wallplate.
  5. Connect the wires.
  6. If the wire labels don’t match.
  7. Specify the furnace type.
  8. Install the batteries.
  9. Install the thermostat.
  10. Set the system.

Identify System Type

This thermostat is compatible with the following systems:

  • Gas, oil or electric furnace
  • Central air conditioner
  • a hot water system with or without pump
  • a millivolt system
  • a central heating and cooling system

Remove Old Thermostat

  1. Turn power off at the heating/cooling system.Honeywell RCT8100 Manual
  2. Remove old thermostat, but leave wallplate with wires attached.

Identify Wires

If any wires are not attached to your old thermostat or are attached to a terminal marked C or C1, they will not be connected to your new thermostat. Wrap the bare metal end of each of these wires with electrical tape, so it cannot touch and short other wires.

Honeywell RCT8100 Manual

Mount New Wallplate

  1. Remove coverplate.Honeywell RCT8100 Manual
  2. Loosen screw (the screw remains captive on wallplate).Honeywell RCT8100 Manual
  3. Remove thermostat.Honeywell RCT8100 Manual
  4. Mark and drill appropriate mounting holes (or use existing holes). Insert plastic anchors. Pass wires through opening of wallplate and secure. Honeywell RCT8100 Manual

Connect Wires (typical wiring)

Honeywell RCT8100 Manual

  1. Match each labeled wire with the terminal having the same letter.
  2. Loosen the terminal screws using a screwdriver, insert the wires, then tighten the screws.
  3. Push any excess wire back into the wall opening.

Connect Wires (less common wiring)

If a labeled wire does not match any terminal designation, see diagram below.

Honeywell RCT8100 Manual

Specify Furnace Type

Set the Jumper J2, on the back of the thermostat, if you have connected a wire to the G terminal.

Honeywell RCT8100 Manual

HG Leave the jumper in this factory-set position if you have a gas or oil furnace.

HE Place the jumper to this position if you have an electric furnace.

Install Batteries

Honeywell RCT8100 Battery Install

  1. Pull out the battery cover.
  2. Install the batteries as shown. Observe the polarity.
  3. Reinstall the battery cover. You will hear a clicking sound.

After the batteries are installed, the thermostat performs a series of tests for approximately 5 seconds. Afterwards, the screen displays the actual temperature. It is normal that the displayed temperature be higher than the ambient temperature if you are holding the thermostat. The thermostat will display the ambient temperature once it is installed on the wall. By default, the setpoint is 70 °F (21 °C).

Install thermostat

Honeywell RCT8100 Install

  1. Mount the thermostat on the wallplate.
  2. Tighten the screw and install the coverplate.
  3. Turn power back on at the heating/cooing system.

System Setup

  1. Press both UP and DOWN buttons simultaneously for 3 seconds to enter or exit the setup menu.
  2. To advance to the next function, briefly press both UP and DOWN buttons simultaneously.
  3. To change the setting, press the UP or DOWN button.

Honeywell RCT8100 System Setup

  • 1 Default settings are shown in bold and underlined.
  • 2 See page 3 of Operating Manual.
  • 3 Use the system switch to switch between the two parameters.
  • 4 For optimal heating control, use the setting that matches your system as follows: 2=30 min (steam, gravity), 3=20 min (hot water, 90%+ high-efficiency furnace), 4=15 min (gas or oil), 5=12 min (alternate setting for gas or oil), 6=10 min (electric).
  • 5 The corresponding cooling cycle lengths are as follows: 2=30 min, 3=20 min, 4=15 min, 5=12 min, 6=10 min

Readmore and Download Honeywell RCT8100 Programmable Thermostat Installation Manual PDF

Title

: Download Honeywell RCT8100 Programmable Thermostat Installation Manual PDF

Format

: PDF

Pages

: 28 Pages

Language

: English

File Size

: 3 MB