Honeywell TH8000 Vertical Non Programmable Thermostat Installation Guide

: July 26, 2024
: Honeywell

Table of Contents

Honeywell TH8000 Vertical Non Programmable Thermostat
Product Information
Product Usage Instructions
Wallplate installation
Power options
Wiring
Remove tab and mount thermostat
Set date and time
Installer setup
Installer system test
Special functions
Accessories & replacement parts
Specifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Honeywell TH8000 Vertical Non Programmable Thermostat

Product Information

Specifications :

Model: Touch-screen Programmable Thermostat
Battery: Lithium battery with Perchlorate material
Power Options: 24VAC primary power or battery backup
Terminal Designations: R, Rc, C, W, W2, Y, Y2, G, S1, S2 (for different system types)

Product Usage Instructions

Wallplate Installation:

Separate wallplate from thermostat.
Mount wallplate by drilling 3/16 holes for drywall or 7/32 holes for plaster.
Grasp top and bottom of wallplate and pull to remove from thermostat.

Power Options :
For primary power, connect the common side of the transformer to the C terminal. Insert supplied batteries for backup power

Wiring:
Follow the terminal designations based on your system type and wiring guide provided in the manual. Remove factory-installed jumper for two-transformer systems.

Frequently Asked Questions (FAQ)

Q: How can I get assistance with this product?
A: For help with the product, visit http://customer.honeywell.com or call Honeywell Customer Care at 1-800-468-1502.
Q: What should I do if my old control contains mercury?
A: Do not place the old control in the trash. Contact your local waste management authority for recycling and proper disposal instructions.

Installation Guide
VisionPRO® TH8000 Series
Touch-screen Programmable Thermostat

This manual covers the following models

TH8110U: For 1 Heat/1 Cool systems
TH8320U: For up to 3 Heat/2 Cool systems
TH8321U: For up to 3 Heat/2 Cool systems with dehumidification (Pull thermostat from wallplate and turn over to find model number)

System Types

Gas, oil, or electric heat with air conditioning
Warm air, hot water, high efficiency furnaces, heat pumps, steam, gravity
Heat only — two-wire systems, power to open and close zone valves (Series 20), and normally open zone valves
Heat only with fan
Cool only
750 mV heating systems

This thermostat contains a Lithium battery which may contain Perchlorate material. Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
Need Help?
For assistance with this product please visit http://customer.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502

Wallplate installation

Separate wallplate from thermostat.
Mount wallplate as shown below.

Must be installed by a trained, experienced technician

Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition.
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.

Power options

Wiring

Terminal Designations Shaded areas below apply only to TH8320/TH8321.

Conventional Terminal Letters:

R Heating power. Connect to secondary side of heating system transformer.
Rc Cooling power. Connect to secondary side of cooling system transformer.
C Common wire from secondary side of cooling transformer (if 2 transformers).
W 1st stage heat relay.
W2 2nd stage heat relay.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
G Fan relay.
S1 Optional outdoor or remote sensor.
S2 Optional outdoor or remote sensor

Heat Pump Terminal Letters:

R Heating power. Connect to secondary side of heating system transformer.
Rc Cooling power. Connect to secondary side of cooling system transformer.
C Common wire from secondary side of cooling system transformer.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
Aux/E Auxiliary/Emergency heat relay.
G Fan relay.
L Heat pump reset (powered continuously when System is set to Em Heat; system monitor when set to Heat, Cool or Off).
O/B Changeover valve for heat pumps.
S1 Optional outdoor or remote sensor.
S2 Optional outdoor or remote sensor.

Wiring

Wiring guide—conventional systems
Shaded areas below apply only to TH8320/TH8321.

1H/1C System (1 transformer)
1H/1C System (2 transformers)
Heat Only System
Heat Only System With Fan
Heat Only System (Series 20)
2H/2C System (1 transformer)
__**Y2 **Cool relay 2
__**W2 **Heat relay 2
Rc **** Power [1]

| R| [R+Rc joined by jumper]
__**W __**

Y

| Heat relay 1

Cool relay 1

G| Fan relay
C| 24VAC common [3]
__**S1 __**

__**S2 __**

| Optional outdoor/remote sensor Optional outdoor/remote sensor
2H/2C System (2 transformers)

Y2 **** Cool relay 2

See [notes] below

Power supply. Provide disconnect means and overload protection as required.
Remove jumper for 2-transformer systems.
Optional 24VAC common connection.
Common connection must come from cooling transformer.

Wiring guide—heat pump systems
Shaded areas below apply only to TH8320/TH8321.

1H/1C Heat Pump (no auxiliary heat)
2H/2C Heat Pump (no auxiliary heat)
2H/1C Heat Pump (with auxiliary heat)
L **** Equipment monitor [6, 7]

2H/2C Heat Pump (no auxiliary heat)
Y2 **** Compressor 2 relay

3H/2C Heat Pump (with auxiliary heat)
Y2 **** Compressor 2 relay

See [notes] below

Power supply. Provide disconnect means and overload protection as required
Optional 24VAC common connection.
O/B set to control as either O or B in installer setup.
If L terminal is used, 24VAC common (terminal C) must be connected.
Heat pump reset (powered continuously when thermostat is set to Em. Heat; system monitor when set to Heat, Cool, or Off).

Remove tab and mount thermostat

Set date and time

Installer setup

Setup functions Settings & Options (factory default in bold)
Shaded areas below apply only to TH8320/TH8321.

0120	Year	20	( 20 01- 20 99)
(first two digits)	21	( 21 00- 21 78)
0130	Year

(second two digits)

| 12| (20 12 ) [Other options: 00-99]
0140| Month| 6| [Other options: 1-12]
0150| Date| 15| [Other options: 1-31]
0160| Schedule format| 4| 7-day programming
| | 0| Non-programmable
0170| System type| 1| 1 heat/1 cool conventional
| | 2| 1 heat/1 cool heat pump (no aux. heat)
| | 3| Heat only (2-wire systems)
| | 4| Heat only with fan
| | 5

6

| Hot water Series 20 system (power to open & close zone valves/normally open zone valves)

Cool only

Recommended for most compressors
[Other options: 1, 2, 4, 5 or 6 CPH]

Shaded areas below apply only to TH8320/TH8321.

Setup functions Settings & Options (factory default in bold)

0500	Furnace filter	0	Off
change reminder	1	10-day run time (about 1 month)
	2	30-day run time (about 3 months)
	3	60-day run time (about 6 months)
	4	90-day run time (about 9 months)
	5	120-day run time (about 1 year)
	6	365-day run time (about 3 years)
0510	Humidifier pad	0	Off
change reminder	1	90 calendar days
	2	180 calendar days
	3	365 calendar days
0520	UV lamp change	0	Off
reminder	1	365 calendar days
0530	Adaptive Intelligent	1	On ** See page 11
Recovery™	0	Off
0540	Program periods	4	**4 program periods (Wake, Leave,

Return, Sleep)
| | 2| 2 program periods (Wake, Sleep)
0580| Compressor protection| 5| 5 minute compressor off time ** See page 11 [Other options: 0, 1, 2, 3 or 4-minute off time]
0600| Heat temperature range stop| 90| Max. heat temperature setting is 90°F (32°C) [Other options: 40-89°F (4.5°C to 32°C)]
0610| Cool temperature range stop| 50| Min. cool temperature setting is 50°F (10°C) [Other options: 51-99°F (10.5°C to 37°C)]
0640| Clock format| 12| 12-hour time (i.e., “3:30 pm”)
| | 24| 24-hour time (i.e., “15:30”)
0650| Extended fan| 0| Off
| timer (heat)| 90| Fan runs for 90 seconds after call for heat ends
0660| Extended fan| 0| Off
| timer (cool)| 90| Fan runs for 90 seconds after call for cooling ends
0670| Keypad lock| 0| Keypad unlocked (fully functional)
| | 1| Partially locked (access to temperature settings only)
| | 2| Fully locked
0680| Heat temperature| 2| Standard temperature control (recommended)
| control| 1| Choose if room is warmer than set temperature
| | 3| Choose if room does not reach set temperature
0690| Cool temperature| 2| Standard temperature control (recommended)
| control| 1| Choose if room is cooler than set temperature
| | 3| Choose if room does not reach set temperature
0700| Temperature display offset**| 0|

Thermostat displays actual room temperature
[Other options: -3, -2, -1, 1, 2, 3°F offset (-1.5°C to 1.5°C)

0710| RESET| 0| No reset
| | 1| Reset installer options & program schedule to factory default (only date and time settings are retained)

Installer system test

During installer setup, press repeatedly until “Test” appears.

Shaded areas below apply only to TH8320/TH8321.

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

Special functions

Shaded areas below apply only to TH8320/TH8321.
Auto Changeover (Setup Function 0300): When set to Auto, the thermostat automatically selects heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 2 degrees apart. If function 0380 is set to On, the heat and cool settings must be at least 5 degrees apart.
Remote Sensor (Setup Function 0340): If an optional outdoor sensor is installed, the thermostat can display the outside temperature. If an optional remote indoor sensor is installed, the thermostat will display the temperature at the sensor location (the internal sensor in the thermostat is not used).
Adaptive Intelligent Recovery (Setup Function 0530): Allows the thermostat to “learn” how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at the scheduled time.
Compressor Protection (Setup Function 0580): Forces the compressor to wait a few minutes before restarting, to prevent damage. During this time, the message “Wait” flashes on the display.
Dehumidification control (Setup Function 0380): TH8321 models monitor the indoor humidity level and automatically activate the cooling system to reduce humidity by lowering the temperature by up to 3 degrees below the current cool setting.
Heat Pump Temperature Lockout (with fossil-fuel backup): If the thermostat is installed with an optional outdoor sensor, you can select a compressor lockout temperature (Function 0350). When the outdoor temperature is below the lockout temperature, only the auxiliary heat operates. When the outdoor temperature is above the lockout temperature, only the compressor operates.
Heat Pump Temperature Lockouts (with electric heat backup): If the thermostat is installed with an optional outdoor sensor, you can select a compressor lockout temperature (Function 0350) and/or an auxiliary heat lockout temperature (Function 0360). When the outdoor temperature is below the compressor lockout temperature, only the auxiliary heat operates. When the outdoor temperature is above the auxiliary lockout temperature, only the compressor operates. If the outdoor temperature is between the compressor and auxiliary lockout temperatures, both the compressor and auxiliary heat can operate.

Accessories & replacement parts

Please contact your distributor to order replacement parts.
- Outdoor temperature sensor…………………………. Part Number C7089U1006
- Remote indoor temperature sensor………………. Part Number C7189U1005
- Cover plate*……………………………………………………. Part Number 32003796-001
- (Use 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
- 0° to 120°F (-18° to 48.9°C)
Shipping Temperature
- -30° to 150°F (-34° to 66°C)
Operating Relative Humidity
- 5% to 90% (non-condensing)
Physical Dimensions
- 4-9/16” H x 6” W x 1-3/8” D
- 116 mm H x 152 mm W x 35 mm D

Electrical Ratings

Need Help?
For assistance with this product please visit http://customer.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502