TCONT800AS11AA Touch Screen
Programmable Comfort Control
18-HD25D18-1
INSTALLATION INSTRUCTIONS
The TCONT800AS11AA Programmable Comfort Control provides electronic control of 24 Vac heating and cooling systems. See Table 1 for a general description.
Table 1. TCONT800AS11AA Comfort Control Description.
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Power Method |
Changeover |
System Selection |
Fan Selection |
Comments |
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24 Vac common wire |
Automatic or |
Heat-Off-Cool-Auto |
On-Auto-Circ |
System and Fan selection vary |
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manual |
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based on system type |
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selectable |
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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.
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.
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.
NO
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YES |
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NO |
NO |
5 FEET |
[1.5 METERS]
M19925
Fig. 1. Selecting comfort control location.
Do not install the comfort control 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 comfort control.
® U.S. Registered Trademark • US Pat. #6,595,430 and Other Patents Pending |
69-1787-1 |
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Copyright © 2005 American Standard Inc. • All Rights Reserved • |
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
The comfort control can be mounted horizontally on the wall or on a 4 in. x 2 in. (101.6 mm x 50.8 mm) wiring box.
1.Position and level the wallplate (for appearance only).
2.Use a pencil to mark the mounting holes.
WALL
WIRES THROUGH WALL
AND WIRE SLOT
WALL ANCHORS (2)
MOUNTING
HOLES
MOUNTING
SCREWS (2)
M19916
Fig. 2. Mounting wallplate.
3.Remove the wallplate from the wall and, if drywall, drill two 3/16-in. holes in the wall, as marked. For firmer material such as plaster, drill two 7/32-in. holes. Gently tap anchors (provided) into the drilled holes until flush with the wall.
4.Position the wallplate over the holes, pulling wires through the wiring opening. See Fig. 2.
5.Insert the mounting screws into the holes and tighten.
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 comfort control.
HEAT PUMP
HEAT/COOL
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RC |
RC |
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R |
R |
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W1 |
O |
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Y |
Y |
S1 |
S1 |
G |
G |
S2 |
S2 |
B |
B |
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SCREW TERMINALS |
M22655 |
Fig. 3. Selecting terminal identifications for system type.
Table 2. Selecting Terminal Identifications for System Type.
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Wallplate |
Wiring |
System Type |
Terminal |
Diagram |
Identifications |
Reference |
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Standard Heat/Cool |
Heat/Cool |
Fig. 5, |
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Fig. 6 |
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Heat Pump with No |
Heat Pump |
Fig.7 |
Auxiliary Heat |
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NOTE: The factory default setting is configured for a 1 heat/1cool system with a gas furnace.
M19917
All wiring must comply with local electrical codes and ordinances.
1.Select set 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.
Fig. 4. Inserting wires in terminal block.
IMPORTANT
Use 18 gauge comfort control wire.
Pub. No. 18-HD25D18-1 |
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69-1787-1 |
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
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HEAT/COOL |
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RC |
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R |
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W1 |
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Y |
S1 |
G |
S2 |
B |
T |
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2 |
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HEAT/COOL |
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RC |
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R |
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W1 |
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Y |
S1 |
G |
S2 |
B |
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T |
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1 |
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AIR |
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OIL |
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R |
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Y |
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G |
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W1 |
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W2 |
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W3 |
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B/C |
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R |
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Y |
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G |
T |
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T |
W |
B/C |
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HANDLER |
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OIL BURNER PRIMARY |
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INDOOR |
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INDOOR |
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OUTDOOR |
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OUTDOOR |
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ODT |
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COOLING UNIT |
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COOLING UNIT |
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Y |
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B |
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O.D. SECTION |
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(SINGLE STAGE) |
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Y |
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B |
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O.D. SECTION |
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(SINGLE STAGE) |
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TO POWER SUPPLY |
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(3 PH |
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TO POWER SUPPLY |
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(3 PH |
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ONLY) |
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PER LOCAL CODES |
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ONLY) |
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PER LOCAL CODES |
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1 FACTORY INSTALLED JUMPER. |
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1 OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE |
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2 OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE |
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE |
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FROM THE THERMOSTAT CABLE. |
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ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE |
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M22657 |
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FROM THE THERMOSTAT CABLE. |
M22656 |
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Fig. 5. Typical hookup of single-stage heat and cool system with single transformer
(1H/1C).
Fig. 6. Typical hookup of single-stage heat and cool system with two transformers
(1H/1C).
HEAT PUMP
1 |
RC |
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R |
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O |
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Y |
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S1 |
G |
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S2 |
B |
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T |
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2 |
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I-PF |
PM-A |
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SUPPL. HTR. |
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R |
Y |
O |
G W1 W2 |
CONTROL BOX |
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B/C |
T |
AIR |
W3 |
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HANDLER |
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REQ. |
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ODT-1 |
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FOR |
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TO POWER 3 PH |
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SUPPLY PER |
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ODT-2 |
LOCAL |
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CODES AND |
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AS DEFINED |
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IN FIELD |
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INDOOR |
WIRING TABLE |
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OUTDOOR |
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HEAT PUMP |
R |
Y |
O |
BR/X2 |
BR(T) |
F |
B |
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O.D. SECTION |
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OR BK |
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(SINGLE STAGE) |
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TO POWER SUPPLY |
(3 PH |
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PER LOCAL CODES |
ONLY) |
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1FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
2ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE. |
M22658 |
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Fig. 7. Typical hookup of single-stage heat pump with no auxiliary/backup heat (1H/1C heat pump).
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Pub. No. 18-HD25D18-1 |
3 |
69-1787-1 |
TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
The comfort control can be powered with 24 Vac.
24 Vac Common Power (Recommended)
Wire the common side of the transformer to the B screw of the comfort control wallplate. When installing in a single transformer system, keep the jumper wire between the R and Rc screws. When installing in a twotransformer system, use the common from the cooling transformer to connect to the B screw and remove the jumper wire between the R and Rc screws.
Battery Power (Optional)
CAUTION
Equipment or Property Damage Hazard. Using battery power only may not provide adequate power to comfort control and can cause damage during 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 used to power the comfort control for armchair programming only. To prevent the comfort control and heating/cooling system from shutting down due to lack of battery power, it is not recommended that the comfort control be solely powered with the three AAA batteries during normal system operation. When using batteries, make sure positive and negative terminals are oriented correctly, as marked on the device. See Fig. 8.
BATTERIES (3) |
M19918 |
Fig. 8. Installing batteries on comfort control back.
1.Align the terminal screw blocks with the pins on the back of the comfort control.
2.Push the comfort control straight onto the wallplate. See Fig. 9.
WALL
REMOVE DURING |
INSTALLATION |
Fig. 9. Mounting comfort control on wallplate.
Setting Calendar and Time
Locate and remove the tab labeled Remove in the lower left corner on the comfort control back. The tab must be removed to activate the real-time clock. See Fig. 10.
REMOVE TAB TO ACTIVATE REAL TIME CLOCK
REMOVE DURING |
INSTALLATION |
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REMOVE DURING INSTALLATION |
M22644
Fig. 10. Removing tab to activate real-time clock.
This comfort control is designed to automatically keep current time and day in memory for up to ten years under normal use after calendar is set. When comfort control is first powered, display is ready to enter calendar date. See Fig. 11.
Pub. No. 18-HD25D18-1 |
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69-1787-1 |
4 |