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INSTALLATION INSTRUCTIONS

69-1790-3

U.S. Pat. No. 6595430, D509151, and Other Patents Pending

TCONT802AS32DA Touch Screen and 

TCONT803AS32DA Touch Screen with

Dehumidification Control Comfort Controls

18-HD25D19-3

APPLICATION

The TCONT802AS32DA and TCONT803AS32DA Touch Screen Comfort Controls provide electronic control of 24 Vac 
heating and cooling systems. See Table 1 for a general description.

MERCURY 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.

Installer must be a trained, experienced service 
technician.

3.

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

Selecting Location

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

Fig. 1. Selecting comfort control location.

Table 1. TCONT802AS32DA and TCONT803AS32DA Comfort Control Description.

Power Method

Changeover

System Selection

Fan Selection

Comments

24 Vac common 
wire

Automatic or 
manual selectable

Heat-Off-Cool-
Auto (Em. Heat
for heat pumps)

On-Auto-Circ

System and Fan selection 
vary based on system type

System and Fan selection 
vary based on System type. 
Humidity sensor to control 
dehumidification.

5 FEET

[1.5 METERS]

YES

NO

NO

NO

M19925

Summary of Contents for TCONT802AS32DA

Page 1: ...this Product 1 Read these instructions carefully Failure to follow the instructions can damage the product or cause a hazardous condition 2 Installer must be a trained experienced service technician...

Page 2: ...FIG 5 15 All wiring must comply with local electrical codes and ordinances 1 Select set of terminal identifications Table 2 that corresponds with system type heat cool or heat pump in Fig 3 2 Loosen...

Page 3: ...REMOTE SENSOR AVAILABLE ON SELECT MODELS WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE 1 1 RC S1 R S2 W1 Y G B HEAT COOL T B C W T T G Y R OIL FURNACE Y B COOLING UNIT O D SECTION SINGLE...

Page 4: ...O D SECTION SINGLE STAGE TO POWER SUPPLY PER LOCAL CODES 3 PH ONLY INDOOR OUTDOOR W1 Y2 F X2 O R O W3 TO POWER SUPPLY PER LOCAL CODES AND AS DEFINED IN FIELD WIRING TABLE SUPPL HTR CONTROL BOX I PF RE...

Page 5: ...STAT CABLE THE INSTALLER MUST JUMPER AT THE LVTB R TO O 1 2 2 RC S1 R S2 O Y G B HEAT PUMP T B C G Y YLO BK R VARIABLE SPEED AIR HANDLER B 16 SEER HEAT PUMP O D SECTION TWO STEP TO POWER SUPPLY PER LO...

Page 6: ...iable speed gas furnace 2H 1C heat pump W1 W2 G Y B C R T 1 1 2 FACTORY INSTALLED JUMPER OUTDOOR REMOTE SENSOR WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE Y R O BR T BR X2 OR BK B HEAT...

Page 7: ...ble speed gas furnace 3H 2C heat pump W1 W2 G Y Y2 B C R T 1 1 2 FACTORY INSTALLED JUMPER OUTDOOR REMOTE SENSOR WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE Y2 R O BR T X2 BK B F HEAT PU...

Page 8: ...ng freezing conditions Connect the 24 Vac Common B wire from the system transformer to the comfort control for proper operation when the battery power is drained Three AAA alkaline batteries can be us...

Page 9: ...calendar date to be entered See Fig 19 Fig 19 Setting calendar and time after initial powerup IMPORTANT The tab on the back of the comfort control in the lower left corner must be removed for this fe...

Page 10: ...Common Connection An LED indicator is located in the upper right corner of the comfort control It is only visible when lighted It indicates when the comfort control is in the Emergency Heat mode When...

Page 11: ...y five seconds until screen changes 4 Release the two blank keys when the screen on the comfort control matches the screen below 5 See screen below to review how the comfort control keys are used duri...

Page 12: ...3 wire or normally open zone valves 6 cool only 7 2 heat 1cool heat pump 8 2 heat 2 cool 9 2 heat 1cool 10 1 heat 2 cool oil furnace or 0H 2C 11 2 heat 2 cool heat pump with no auxiliary heat 12 3 hea...

Page 13: ...ur cph for Auxiliary Heat in 3H 2C Heat Pump Systems 1 12 1 12 available typical settings 1 1cph used for steam or gravity system 3 3 cph used for 2 stage fossil fuel forced air systems or hot water s...

Page 14: ...Features section for more details 3 indoor temperature sensor Defaults and Options depend on System Type selection Indoor Temperature Sensor uses an averaging network and does not include on board sen...

Page 15: ...ature Range Stop 0610 50 Lowest cooling setpoint 51 to 99 Temperature range 1 F increments of cooling setpoint Shown in 1 2 C Clock Format 0640 12 12 hour clock format 24 24 hour clock format Extended...

Page 16: ...less aggressive temperature control could cause temperature undershoot 3 more aggressive temperature control could cause temperature overshoot Applies to recovery ramp Choose 1 if getting temperature...

Page 17: ...est Avoid cycling compressor quickly Table 5 System Test s Select Installer Setup Number Factory Setting Other Choices Comments Options Description Options Description Installer Test Cool Test 1 0 Coo...

Page 18: ...W1 terminal Often there is only one source of non compressor heat and the X2 terminal is jumpered to the W1 terminal Heat Pump with Electric Auxiliary Backup Heat and Outdoor Temperature Sensor 1 Choo...

Page 19: ...eating or cooling does not come on Comfort control minimum off time is activated Wait up to five minutes for the system to respond System selection is not set to Heat or Cool Set system Selection to c...

Page 20: ...AND TCONT803AS32DA TOUCH SCREEN WITH DEHUMIDIFICATION Pub No 18 HD25D19 3 69 1790 3 M S Rev 01 06 U S Registered Trademark 2006 American Standard Inc All Rights Reserved American Standard Inc Troup H...

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