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Honeywell T6811DP08 User Manual

Honeywell T6811DP08
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INSTALLATION INSTRUCTIONS
62-0325ES-01
T6811DP08/T6812DP08 Digital Thermostat
Display
INSTALLATION GUIDE
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before installation.
Terminal Designations
Wiring Diagrams
Fig. 1. Typical wiring for ON/OFF control in 2 pipes Heat/
Cool/1H1C (for 2-wire valve actuators).
DOWN BUTTON
FAN SWITCH
UP BUTTON
MODE BUTTON
POWER SWITCH
MCR29502
Setup
Test
Set to
Lock
INDICATES THE
INSTALLER SETUP
INDICATES THE NUMBER
OF SETUP OR TEST
INDICATES THE
INSTALLER TEST
KEYPAD LOCK
INDICATES THE
SETPOINT
INDICATES THE
TEMPERATURE
CURRENT
MODE
INDICATES TEMPERATURE IS
“CALLING” FOR HEAT OR COOL
M29503
Terminal Designation
L Line Voltage Power
Ch/Cc Heating close/Cooling close
W/Y Heating open/Cooling open
N Line Voltage Ground
Gl Low speed fan
Gm Medium speed fan
Gh High speed fan
FAN
VALVE
L
N
L
Ch/Cc
W/Y
N
GI
Gm
Gh
M29504
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Honeywell T6811DP08 Specifications

General IconGeneral
TypeDigital
Display TypeLCD
MountingWall-mounted
OutputRelay
Stages1 Heat / 1 Cool
Backup BatteryNo
Control ModeCooling, Heating
ApplicationResidential
Voltage24 VAC
Temperature Range40°F to 99°F (4°C to 37°C)
Set Point Range40°F to 99°F (4°C to 37°C)

Summary

Installation Instructions

Safety Warning

Electrical hazard alert for shock or equipment damage. Disconnect power before installation.

Terminal Designations

Lists and explains the function of each terminal on the thermostat.

Wiring Diagrams

Illustrates typical wiring configurations for ON/OFF control of HVAC systems.

Installation Steps

Wallplate and Wire Routing

Pull wires through the wallplate and place the back cover over the junction box.

Mounting and Screw Terminals

Insert mounting screws, tighten, and connect wires to terminal blocks.

Thermostat Attachment

Align thermostat top with back cover, push down, and secure with a locking screw.

Installer Setup Mode

Entering and Navigating Setup

Enter setup by holding UP/MODE, change settings with UP/DOWN, advance with MODE.

Setup Options

Covers System Type, Temperature Scale, CPH values, Display adjustments, and ranges.

Exiting Setup

Hold UP and MODE buttons simultaneously to exit and save settings.

Operating Your Thermostat

Power On/Off Control

Slide the POWER switch to enter or exit the On/Off mode.

Fan Speed Selection

Use the FAN switch to select Low, Medium, or High fan speed.

System Mode Setting

Press MODE button to select Heat, Cool, or Vent mode.

Temperature Setting

Use UP or DOWN buttons to select desired temperature in Heat/Cool or Vent modes.

Troubleshooting Tips

Heating System Issues

Check mode, temperature setting, and heat icon if the heating system does not start.

Cooling System Issues

Verify mode, temperature setting, and cooling icon if the cooling system does not start.

Button Functionality

Troubleshoot unresponsive mode, up, or down buttons by checking keypad lock and thermostat power.

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