How do I get the cover off to replace batteries?

You simply pull the front off the thermo, it takes two AA batteries. https://manualsfile.com/product/g6wgj6qjb.html#battery-replacement

How do you switch between C and F on this thermostat?

Follow these steps: 1. Press and hold the UP and DOWN buttons until the display changes. (you will see 5 in the middle of the screen, that's a FUNCTION number. You will also find another number 5 on the right side...that's the SETTING number) 2. Press and hold the UP and DOWN buttons simultaneously for one second to advance to the next function. Do that until you reach FUNCTION # 14 (TEMPERATURE DISPLAY). 3. Press the UP or DOWN button to change the setting. You need to choose SETTING 1 for Celcius or 0 for Fahrenheit. 4. Press and hold the UP and DOWN buttons simultaneously to exit and save settings.

Is it works with steam radiator boiler?

It is designed to work only with one system heat or air condition. If your current controller is only used for heating then it should work. If you need both heat and air this one will not work.

User Manual Honeywell TH1100DV1000/U PRO 1000 Vertical Heat

Honeywell TH1100DV1000/U PRO 1000 Vertical Heat Non-Programmable Thermostat - Use Manual - Use Guide PDF.
Documents: Go to download!
User Manual

User Manual - (English, French, Spanish)

Installation Instruction

Installation Guide - (English)

Other Documents

Product Information - (English)

Specification

Spec Sheet (web) - (English)

Table of contents

About your new thermostat
Quick reference to controls
Quick reference to display screen
Select the system setting
Select the fan setting
Adjust the temperature
Built-in compressor protection
Battery replacement
Customer assistance
In case of difficulty
Wallplate installation
Power options
Fan operation settings
Installer setup

Operating Manual Non-Programmable Thermostat for Honeywell TH1100DV1000/U

About your new thermostat

Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to-use, push-button climate control.

Features

Backlit display is easy to read
Displays ambient (measured) temperature at all times
One-touch access to setpoint temperature
Built-in compressor protection

Quick reference to controls

Quick reference to display screen

Setpoint indicator

Appears when the setpoint temperature is displayed

Temperature

The ambient (measured) temperature is normally displayed. To view the setpoint temperature, press the Up or Down button once. The setpoint temperature will appear for five seconds.

System status

Cool on: Cooling system is on.
Heat on: Heating system is on.
Aux On: Auxiliary heat is on. (Only for heat pumps with this capability [select models only].) When “Heat On” or “Cool On” is flashing, compressor protection is engaged

Select the system setting

The SYSTEM switch can be set to control your heating or cooling system, depending on the season.

Cool: Cooling system control.
Off: All systems are off.
Heat: Heating system control.
Em Heat: Emergency & Auxiliary Heat control. Compressor is locked out. (Select models only.)

CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).

Select the fan setting

Set the FAN switch to Auto or On.
In “Auto” mode (the most commonly used setting), the fan runs only when the heating or cooling system is on.
If set to “On,” the fan runs continuously

Adjust the temperature

Press or to adjust the temperature.
Note: Make sure the thermostat is set to the system you want to control (heat or cool).

Built-in compressor protection

This feature helps prevent damage to the compressor in your air conditioning or heat pump system.
Damage can occur if the compressor is restarted too soon after shutdown. This feature forces the compressor to wait 5 minutes before restarting.
During the wait time, the display will flash the message Cool On (or Heat On if you have a heat pump model). When the safe wait time has elapsed, the message stops flashing and the compressor turns on.

Battery replacement

Install two fresh AAA batteries when Lo Batt flashes on the screen. Lo Batt appears for 60 days before the batteries are depleted.
Replace batteries once a year, or when you will be away for more than a month.
The settings are stored in non-volatile (permanent) memory and are thus preserved when the thermostat is without batteries.

Customer assistance

In case of difficulty

If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily

1. Display is blank

Check circuit breaker and reset if necessary.
Make sure power switch at heating & cooling system is on.
Make sure furnace door is closed securely.
Make sure fresh AAA alkaline batteries are correctly installed

2. Heating or cooling system does not respond

Set system switch to Heat. Make sure the temperature is set higher than the Inside temperature.
Set system switch to Cool. Make sure the temperature is set lower than the Inside temperature.
Wait 5 minutes for the system to respond.

3. Temperature settings do not change - Make sure heating and cooling temperatures are set to acceptable ranges:

Heat: 40° to 90°F (4.5° to 32°C).
Cool: 50° to 99°F (10° to 37°C).

4. “Heat On” or “Cool On” is flashing

Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor

5. “Heat On” is not displayed

Set the System switch to Heat, and set the temperature level above the current room temperature

6. “Cool On” is not displayed

Set the System switch to Cool, and set the temperature level below the current room temperature

Installation Guide

Wallplate installation

Remove the wallplate from the thermostat as shown at left, then follow directions below for mounting.

Pull wires through wire hole.
Position wallplate on wall, level and mark hole positions with pencil.
Drill holes at marked positions as shown below, then tap in supplied wall anchors.
Place wallplate over anchors, insert and tighten mounting screws.

CAUTION: ELECTRICAL HAZARD Can cause electrical shock or equipment damage. Disconnect power before beginning installation. Drill 3/16" holes for drywall. Drill 7/32" holes for plaster.

MERCURY NOTICE: If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact the Thermostat Recycling Corporation at www.thermostat-recycle.org or 800-238-8192 for information on how and where to properly and safely dispose of your old thermostat.

Power options

Note: Terminals vary by model.

Fan operation settings

TH2110DV/TH1110DV only:

Gas or Oil: For gas or oil heating systems, leave the fan operation switch in this factoryset position. (This setting is for systems that control the fan in a call for heat.)
Electric or Heat Pump: Change the switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.)

Thermostat mounting: Align the thermostat with the tabs on the wallplate, then push gently until the thermostat snaps in place.

Installer setup

Follow the procedure below to configure the thermostat to match the installed heating/cooling system, and customize feature operation as desired

To begin, press and hold the and buttons until the display changes.

Press the or button to change the setting.
Press the and buttons simultaneously for one second to advance to the next function.
Press and hold the and buttons to exit and save settings

NOTE: If you do not press any button for 60 seconds while you are in the setup menu, the thermostat automatically saves any changes made and exits the menu.

NOTE: The options below may not be available in all models.

5 Heating cycle rate (CPH: cycles/hour) (TH2110DV, TH1110DV and TH1100DV)