Honeywell Pro TH4210D Programmable Thermostat Installation Guide

Honeywell Pro TH4210D Programmable Thermostat

Product Application

This thermostat provides electronic control of 24 VAC heat pump systems with auxiliary heat (2 heat/1 cool).

Power Type

• Battery power
• Common wire
• Common wire with battery backup

System Settings

• Heat, Off, Cool, Em Heat

Fan Settings

• Auto, On

Must be installed by a trained, experienced technician

• Read these instructions carefully. Failure to follow these instructions can dam-age the product or cause a hazardous condition.
• Check the ratings in this booklet to verify that this product is suitable for your application (see page 12).
• Always test for proper operation after installation (see pages 7-8).

CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.

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 your local waste management authority for instructions regarding recycling and proper disposal.

Installation tips

Do not install in locations where the thermostat can be affected by:

• Drafts or dead spots behind doors and in corners
• Hot or cold air from ducts
• Sunlight or radiant heat from appliances
• Concealed pipes or chimneys
• Unheated/uncooled areas such as an outside wall behind the thermostat

Pre-installation checklist

Package contents
Check to make sure your package includes the following items:

• PRO TH4210D digital thermostat (wallplate attached to back)
• Operating manual
• Wall anchors and mounting screws (2 each)
• AA alkaline batteries (2)
• Quick reference card

Required tools & supplies

• No. 2 Phillips screwdriver
• Small pocket screwdriver
• Drill
• Drill bit (3/16” for drywall, 7/32” for plaster)
• Hammer
• Pencil
• Electrical tape
• Level (optional)

Wallplate installation

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

1. Pull wires through wire hole.
2. Position wallplate on wall, level and mark hole positions with pencil.
3. Drill holes at marked positions as shown below, then tap in supplied wall anchors.
4. Place wallplate over anchors, insert and tighten mounting screws.
5. Insert quick reference card in slot in front of wall plate.

Wiring

CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before wiring.

1. Loosen screw terminals, insert wires into terminal block, then re-tighten screws.
2. Push excess wire back into the wall opening. Keep wires in shaded area as shown at left.
3. Plug the wall opening with non- flammable insulation to prevent drafts from affecting thermostat operation.

Terminal Designations

• E Emergency heat relay.
• Aux Auxiliary heat relay.
• Y Compressor contactor.
• G Fan relay.
• O Heat pump changeover valve energized in cooling.
• L Heat pump reset.
• R Power wire from secondary side of system transformer.
• B Heat pump changeover valve energized in heating.
• C Common wire from secondary side of system transformer.

NOTES

C terminal
The C (common wire) terminal is optional when thermostat is powered by batteries.

L terminal
Heat pump reset. L terminal is powered continuously when thermostat is set to Em Heat.

Wire specifications
Use 18- to 22-gauge thermostat wire. Shielded cable is not required.

Wiring diagram

1. Power supply. Provide disconnect means and overload protection as required.
2. Optional 24 VAC common connection.
3. Use either O or B terminals for changeover valve.
4. L terminal is powered continuously when thermostat is set to Em Heat.
5. Install field jumper between E and Aux if there is no emergency heat relay.

Power options & mounting

AC Power
The thermostat can be powered by 24 VAC power, or by batteries.
To wire the thermostat for AC power, connect the common side of the transformer to the “C” terminal as shown at left.

Battery Power
The thermostat can be powered by batteries alone or, if used with AC power, can provide backup power. During power interruptions the batteries will save time/day settings and power the display.

To Mount Thermostat
Align the 4 tabs on the wallplate with corresponding slots on the back of the thermostat, 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.

Press and hold both buttons

Setup Function    Settings & Options

• 6 Auxiliary heat cycle rate (CPH: cycles/hour)
  5 For gas or oil furnaces of less than 90% efficiency
  1 For steam or gravity systems
  3 For hot water systems & furnaces of over 90% efficiency
  9 For electric furnaces
  [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
• 8 Emergency heat cycle rate (CPH)
  9 For electric emergency heat
  1 For steam or gravity systems
  3 For hot water systems & furnaces of over 90% efficiency
  5 For gas or oil furnaces of less than 90% efficiency
  [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
• 9 Compressor cycle rate (CPH)
  3 Recommended for most compressors
  [Other cycle rate options: 1, 2, 4, 5 or 6 CPH]
• 13 Adaptive Intelligent Recovery
  1 On **See page 9
  0 Off
• 14 Temperature display
  0 Fahrenheit
  1 Celsius
• 15 Compressor protection
  5 Five-minute compressor off time **See page 9
  [Other options: 0, 1, 2, 3 or 4-minute off time]

Installer system test

After completing the installer setup above, press the button again to begin a system test (see next page).
Follow the procedure below to test the heating and cooling system.

1. Set SSYYSSTTEEMM switch to Heat.
2. Press to turn on and check systems (see table, below).
3. Pressuntil systems turn off.
4. Set SSYYSSTTEEMM switch to Em Heat and repeat steps 2-3 above. 5 Set SSYYSSTTEEMM switch to Cool and repeat steps 2-3 above.
5. Press and hold to terminate test at any time.

System Test             System Status 

10 Heating system

• 0 Compressor and fan turn off.
• 1 Compressor and fan turn on.
• 2 Auxiliary heat turns on.

20 Emergency heat

• 0 Heat and fan turn off.
• 1 Heat and fan turn on.
• 2 Auxiliary heat turns on.

30 Cooling system

• 0 Compressor and fan turn off.
• 1 Compressor and fan turn on.

70 Thermostat information (for reference only)

• 71 Software revision number (major revisions)
• 72 Software revision number (minor revisions)
• 73 Configuration identification code (major)
• 74 Configuration identification code (minor)
• 75 Production configuration date code (week)
• 76 Production configuration date code (year)

CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection (minimum off time) is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly.

Adaptive Intelligent Recovery™ (Setup Function 13)

Adaptive Intelligent Recovery eliminates guesswork when setting your schedule. It allows the thermostat to “learn”how long your furnace and air conditioner take to reach the temperature you want.
Just set your program schedule to the time you want the house to reach your desired temperature.The thermostat then turns on the heating or cooling at just the right time to reach your scheduled temperature at your scheduled time.
For example: Set the Wake time to 6 am, and the temperature to 70°.The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6.

Built-in compressor protection (Setup Function 15) 
This feature helps prevent damage to the compressor.
Damage can occur if the compressor is re-started too soon after shutdown.This feature forces the compressor to wait for a few min-utes before restarting.
During the wait time, the message Cool On or Heat On will flash on the display.When the safe wait time has elapsed, the message stops flashing and the compressor turns on.

Quick reference to controls

Quick reference to display screen

In case of difficulty

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

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.
• If thermostat is battery powered, make sure fresh AA alkaline batteries are correctly installed (see page 10).

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).
  Check temperature range stop settings (Function 27 & 28 on page 12).

Heating system does not respond (“Heat On” appears on screen) 

• Check for 24 Vac at the equipment on the secondary side of the trans-former between power and common. If voltage is not present, check the heating equipment to find the cause of the problem.
• Check for 24 Vac between the heat terminal (W) and the transformer common. If 24 Vac is present, the thermostat is functional. Check the heating equipment to find the cause of the problem.
• Check for loose or broken wires between the thermostat and the heating equipment.

Cooling system does not respond (“Cool On” appears on screen) 

• Check for 24 Vac at the equipment on the secondary side of the trans-former between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem
• Check for 24 Vac between the cooling terminal (Y) and the transformer common. If 24 Vac is present, the thermostat is functional. Check the cooling system to find the cause of the problem.
• Check for loose or broken wires between the thermostat and the cooling equipment.

Fan does not turn on in a call for heat
Check Installer Setup, Function 3 (Fan Control), to make sure the fan control is properly set to match the type of system (see page 11).

Heat pump issues cool air in heat mode, or warm air in cool mode
Check Installer Setup, Function 2 (Changeover Valve), to make sure it isproperly configured for your system (see page 11).

Heat/cool both on at same time, or heat does not turn off 

• Check Installer Setup, Function 1 (System Type), to make sure it is set to match the installed heating/cooling equipment (see page 11).
• Check to make sure heating and cooling wires are not shorted together.

Heating equip- ment is running in cool mode

• Check Installer Setup, Function 1 (System Type), to make sure it is set tomatch the installed heating/cooling equipment (see page 11).

Cannot change system setting to “Heat”

• Check Installer Setup, Function 1 (System Type), to make sure it is set tomatch the installed heating equipment (see page 11).
• Change Installer Setup, Function 12 (System Setting) to Manual or AutoChangeover (seepage 12).

Cannot change system setting to “Cool”

• Check Installer Setup, Function 1 (System Type), to make sure it is set tomatch the installed cooling equipment (see page 11).
• Change Installer Setup, Function 12 (System Setting) to Manual or AutoChangeover (seepage 12).

“Heat On” is not displayed
Change the System Setting to Heat, and set the temperature level abovethe current room temperature

“Cool On” is not displayed
Change the System Setting to Cool, and set the temperature level belowthe current room temperature.

Accessories

Please contact your distributor to order accessories.
Cover plate assembly ……………………………………..Part Number 50002883-001 (Used to cover marks left by old thermostats.)

Specifications

• Temperature Ranges
  Heat: 40° to 90°F (4.5° to 32°C)
  Cool: 50° to 99°F (10° to 37°C)
• Operating Ambient Temperature
  32° to 120°F (0° to 48.9°C)
• Shipping Temperature
  -20° to 120°F (-28.9° to 48.9°C)
• Operating Relative Humidity
  5% to 90% (non-condensing)
• Physical Dimensions
  3-13/16” H x 5-3/8” W x 1-1/4” D
  97 mm H x 137 mm W x 32 mm D

Electrical Ratings

Automation and Control Solutions

Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée 35 Dynamic Drive
Scarborough, Ontario M1V 4Z9
www.honeywell.com/yourhome

Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
® U.S. Registered Trademark.
© 2005 Honeywell International Inc. Patents pending. All rights reserved. 69-1783 02-2005

Reference

Download manual: Honeywell Pro TH4210D Programmable Thermostat Installation Guide

Honeywell Pro TH4210D Programmable Thermostat Installation Guide