Honeywell Home TH4210U2002 User Manual

Package Includes:
• T4 Pro Thermostat
• UWP™ Mounting System
• Decorative Cover Plate
• Screws and Anchors
• 2 AA Batteries
• Thermostat Literature
T4 Pro
Programmable Thermostat
Product Data
TH4110U2005,
TH4210U2002
M37844
Optional Cover Plate installation
NOTE: If Optional Cover Plate is not
required, see “UWP Mounting System
installation” on next page.
Use the Optional Cover Plate when
you need to cover paint gap from old
thermostat.
There are different cover plates
depending on when the thermostat was
manufactured.
For the square cover plate:
1. Separate the Cover Plate from
Mounting Plate.
2. Mount the Mounting Plate on to the
wall using any of the 8 screw holes.
Insert and tighten mounting screws
supplied with Cover Plate Kit. Do not
overtighten. See Figure 2. Make sure
the Mounting Plate is level.
3. Attach the UWP by hanging it on the
top hook of the Mounting Plate and
then snapping the bottom of the UWP
in place. See Figure 3.
4. Snap the Cover Plate onto the
Mounting Plate. See Figure 4.
Use supplied
screws and
wall anchors
4
3
2
1
MCR38416

Honeywell Home TH4210U2002 Specifications

General

Type	Programmable Thermostat
Display	Digital
Backlight	Yes
Temperature Range	40°F to 90°F
Power Source	24VAC
Schedule	7-day programmable
Stages	1 Heat / 1 Cool
Terminal Designations	R, W, Y, G
Changeover	Manual
Voltage	24VAC

Summary

UWP Mounting System Installation

Thermostat Power and Wiring

Setting Slider Tabs

Guide to configuring system-specific slider tabs for proper operation.

UWP Wiring Terminal Designations

Explanation of each terminal designation on the UWP for wiring.

Wiring Diagrams

Thermostat Mounting

Thermostat Settings and Features

Intelligent Recovery and Compressor Protection

Details on adaptive learning and compressor safety features.

Battery Replacement

Installer Setup (ISU)

Entering ISU

Steps to access the thermostat's installer setup menu.

Advanced Setup Options Overview

Advanced Setup Options (ISU) - System Configuration

Heating Equipment and System Type

Configuring heating equipment type and system configuration.

Stage and Control Settings

Setting system stages, fan control, and changeover modes.

Differential and Droop Settings

Advanced Setup Options (ISU) - Performance and Safety

Timing and Cycle Rate Settings

Configuring timers, cycle rates, and compressor protection.

Setpoint and Lockout Settings

Setting minimum cool and maximum heat setpoints, and keypad lockout.

Advanced Setup Options (ISU) - Maintenance and Display

Air Filter Reminders

Setting up reminders for air filter replacement.

Installer System Test

Troubleshooting Common Issues

Display and System Response Problems

Solutions for a blank display or unresponsive heating/cooling system.

Temperature and Operation Issues

Fixes for temperature setting, flashing indicators, and aux heat issues.