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Copyright © 2004 Honeywell International Inc.  •  

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INSTALLATION INSTRUCTIONS

69-1700

TH8110U Touch Screen

Programmable Thermostats

APPLICATION

The TH8110U Universal Programmable Thermostats provide electronic control of 24 Vac heating and cooling systems 
or 750 mV heating system. See Table 1 for a general description.

RECYCLE NOTICE

If this control is replacing a control that contains 
mercury in a sealed tube, do not place your old 
control in the trash. Dispose of properly.

Contact your local waste management authority 
for instructions regarding recycling and the 
proper disposal of the old control.

INSTALLATION

When Installing this Product...

1.

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

2.

Check the ratings given in the instructions to make 
sure the product is suitable for your application.

3.

Installer must be a trained, experienced service 
technician.

4.

After completing installation, use these instructions 
to check out the product operation.

Selecting Location

Install the thermostat about 5 ft. (1.5m) above the floor in 
an area with good air circulation at average temperature. 
See Fig. 1. 

Fig. 1. Selecting thermostat location.

Do not install the thermostat where it can be affected by:
— Drafts or dead spots behind doors and in corners.
— Hot or cold air from ducts.
— Radiant heat from sun or appliances.
— Concealed pipes and chimneys.
— Unheated (uncooled) areas such as an outside wall 

behind the thermostat.

Table 1. TH811 Thermostats Description.

Model

Power 

Method

Changeover

System Selection

Fan Selection

Comments

TH8110U

Batteries or 
common wire

Automatic or 
manual 
selectable

Heat-Off-Cool-Auto 

On-Auto-Circ

System and Fan 
selection vary based on 
system type

5 FEET

[1.5 METERS]

YES

NO

NO

NO

M19925

Summary of Contents for VisionPRO TH8110U

Page 1: ...tion 2 Check the ratings given in the instructions to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out the product operation Selecting Location Install the thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average temperature See Fi...

Page 2: ...et of terminal identifications Table 2 that corresponds with system type conventional or heat pump in Fig 3 2 Loosen the screws for the appropriate system type selected see Table 2 Insert wires in the terminal block under the loosened screw See Fig 4 3 Securely tighten each screw 4 Push excess wire back into the hole 5 Plug the hole with nonflammable insulation to prevent drafts from affecting the...

Page 3: ...ELAY FAN RELAY R C POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED REMOVE FACTORY INSTALLED JUMPER OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR AVAILABLE ON SELECT MODELS WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE 1 1 3 2 3 OPTIONAL 24 VAC COMMON CONNECTION Y2 RC S1 R S2 W W2 Y G C 2 CONVENTIONAL M19897 OUTDOOR INDOOR TEMPERATURE SENSOR HEAT RELAY R C POWER SU...

Page 4: ...9899 OUTDOOR INDOOR TEMPERATURE SENSOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FACTORY INSTALLED JUMPER OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR AVAILABLE ON SELECT MODELS WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE 1 3 2 3 Y2 RC S1 R S2 W W2 Y G C 2 CONVENTIONAL R TR C 1 TR W B R SERIES 20 MOTOR OR VALVE M19900 OUTDOOR INDOOR TEMPERATURE SENSOR FAN...

Page 5: ...splay is ready to enter calendar date Fig 15 Fig 15 Setting calendar and time after initial powerup IMPORTANT The tab on back of thermostat in lower left corner must be removed to activate this feature Using the Thermostat The thermostat has a touch screen interface Words or symbols appear highlighting keys as needed to complete tasks Press keys with your fingertips Sharp tips on pens or pencils c...

Page 6: ...ering Installer Setup 1 Thermostat must be powered either with Alkaline AAA batteries or with 24 Vac Common wire 2 From the home screen press System key Press Done or Cancel key to return to home screen 3 Five blank touch keys show on the bottom of the screen between the Done and Cancel keys Press and hold the two blank keys on either side of the center blank key for approximately five seconds unt...

Page 7: ...h 1 12 Select number that represents current calendar month Date Day 0150 15 Digit s represents current calendar date 1 31 Select number that represents current calendar date Schedule Options 0160 4 7 day programming 0 0 nonprogrammable System Type Selection 0170 1 1 Heat 1 Cool Conventional System 1 6 1 1 heat 1 cool 2 single stage heat pump no aux heat 3 heat only no fan 4 heat only with fan 5 h...

Page 8: ...ge changes default cph for 2nd stage heat Continuous Backlight 0280 0 Backlight not on continuously Thermostat backlight comes on with each key press 1 Backlight is on continuously thermostat must have a common wire attached for this function Option is always shown however continuously on backlight works only if thermostat is wired with 24 vac Common Additional Menu Choices 0290 0 Only main menu o...

Page 9: ... 5 F 3 C 6 6 F 3 5 C 7 7 F 4 C 8 8 F 4 5 C 9 9 F 5 C Shown only if automatic changeover is selected Temperature Indication Scale 0320 0 Temperature is displayed in F 1 Temperature is displayed in C Daylight Savings 0330 1 Daylight savings enabled United States 0 0 daylight savings is disabled Set to 0 in areas that do not follow daylight savings Remote Temperature Sensor Outdoor or Indoor 0340 0 N...

Page 10: ... 0540 4 Four periods available Wake Leave Return Sleep 2 Two periods availbable Wake and Sleep Not shown in non programmable is selected 2 or 4 applies to all days of the week Minimum Compressor Off Time 0580 5 Five minute minimum off time for compressor 0 2 3 4 Minimum number of minutes compressor is off between calls for compressor Heat Temperature Range Stop 0600 90 Highest heating setpoint 40 ...

Page 11: ...Standard temperature control in heating 1 3 1 less aggressive temperature control could cause temperature undershoot 3 more aggressive temperature control could cause temperature overshoot Applies to recovery ramp and use of auxiliary heat during recovery Choose 1 if getting temperature overshoot Choose 3 if getting temperature undershoot Temperature Control in Cool 0690 2 Standard temperature con...

Page 12: ...heck for 24 Vac between C and Rc Verify AAA batteries installed correctly and good Temperature settings do not change The upper or lower temperature limits were reached Check temperature setpoints Check Installer Setup Numbers 0600 and 0610 modify The keypad is fully locked Check Installer Setup Number 0670 to change keypad lock options Heating or cooling does not come on Thermostat minimum off ti...

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