TCONT800AS11AA Touch Screen
Programmable Comfort Control
18-HD25D18-1
INSTALLATION INSTRUCTIONS
APPLICATION
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.
Power Method
Changeover
System Selection
Fan Selection
Comments
24 Vac common wire
Automatic or
manual
Heat-Off-Cool-Auto
On-Auto-Circ
System and Fan selection vary
based on system type
selectable
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.
NO
YES
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of the old control.
NO
5 FEET
NO
[1.5 METERS]
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause
a hazardous condition.
M19925
2. Installer must be a trained, experienced service
technician.
3. After completing installation, use these instructions
to check out the product operation.
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.
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.
® U.S. Registered Trademark • US Pat. #6,595,430 and Other Patents Pending
Copyright © 2005 American Standard Inc. All Rights Reserved
69-1787-1
•
•
TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
HEAT/COOL
HEAT/COOL
RC
R
RC
R
1
W1
Y
W1
Y
S1
S2
G
B
S1
S2
G
B
T
T
1
2
OIL
FURNACE
AIR
HANDLER
R
Y
G
W
B/C
T
T
R
Y
G
W2 W3 B/C
W1
OIL BURNER PRIMARY
INDOOR
OUTDOOR
INDOOR
OUTDOOR
COOLING UNIT
O.D. SECTION
(SINGLE STAGE)
COOLING UNIT
O.D. SECTION
(SINGLE STAGE)
ODT
Y
B
Y
B
(3 PH
ONLY)
TO POWER SUPPLY
PER LOCAL CODES
(3 PH
ONLY)
TO POWER SUPPLY
PER LOCAL CODES
1
2
FACTORY INSTALLED JUMPER.
1
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
M22657
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
M22656
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
RC
R
1
O
Y
S1
S2
G
B
T
2
I-PF
PM-A
SUPPL. HTR.
CONTROL BOX
AIR
HANDLER
R
Y
O
G
W2 W3
B/C
T
W1
REQ.
FOR
3 PH
ODT-1
ODT-2
TO POWER
SUPPLY PER
LOCAL
CODES AND
AS DEFINED
IN FIELD
WIRING TABLE
INDOOR
OUTDOOR
HEAT PUMP
O.D. SECTION
(SINGLE STAGE)
BR(T)
BR/X2
OR BK
F
O
R
Y
B
(3 PH
ONLY)
TO POWER SUPPLY
PER LOCAL CODES
1
2
FACTORY INSTALLED JUMPER.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE
ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
M22658
Fig. 7. Typical hookup of single-stage heat pump with no auxiliary/backup heat (1H/1C heat pump).
Pub. No. 18-HD25D18-1
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69-1787-1
TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
Powering the Comfort Control
WALL
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 two-
transformer 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.
SALTION
MVOEDURING
M22643
Fig. 9. Mounting comfort control on wallplate.
Adjusting Real-Time Clock
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.
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.
REMOVE TAB TO ACTIVATE REAL TIME CLOCK
ISNTALLTON
RMEOVEDUING
ISNTALLTON
RMEOVEDUING
M22644
Fig. 10. Removing tab to activate real-time clock.
BATTERIES (3)
M19918
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.
Fig. 8. Installing batteries on comfort control back.
Mounting the Comfort Control
1. Align the terminal screw blocks with the pins on the
back of the comfort control.
2. Push the comfort control straight onto the wall-
plate. See Fig. 9.
Pub. No. 18-HD25D18-1
69-1787-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
OPERATION
SET CURRENT DAY
SET MONTH
System and Fan Settings
The System default setting is Heat and the Fan default
setting is Auto.
MON
TUE
WED
THU
FRI
SAT
SUN
SYSTEM Settings
Heat: controls heating system.
Off: both heating and cooling are off.
Cool: controls cooling system.
DONE
Auto: automatically changes between heating and
cooling systems, depending on indoor temperature. (See
Installer Setup section.)
USE ARROWS TO SET YEAR AND TIME
FAN Settings
The Fan setting can be programmed into the comfort
control schedule for each period (Wake, Leave, Return,
Sleep). See the Owners’ Guide for additional information.
MON
WED
THU
FRI
SAT
SUN
OK TO PICK MULTIPLE DAYS SCREEN LOCKED
CHANGE FILTER UV LAMP HUMIDIFIER PAD
Preprogrammed Settings
Table 3 shows the default program settings. See Owners’
Guide for complete instructions on changing the
program.
DONE
Table 3. Default Program Settings.
Setpoints
M22645
Schedule
Period
Fan
Setting
Time
Heat
Cool
Fig. 11. Setting calendar and time after initial
powerup.
°
°
Wake
Leave
Return
Sleep
6:00AM
Auto
70 F
78 F
°
°
(21 C)
(25.5 C)
IMPORTANT
°
°
8:00AM
6:00PM
10:00PM
Auto
Auto
Auto
The tab on back of comfort control in lower-left
corner must be removed to activate this feature.
62 F
85 F
°
°
(16.5 C)
(29.5 C)
°
°
70 F
78 F
Using the Comfort Control
°
°
(21 C)
(25.5 C)
The comfort control 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 can damage the comfort control.
°
°
62 F
82 F
°
°
(16.5 C)
(28 C)
1. Use arrow keys to set Year, Month and Day (see
Fig. 11).
2. Press Done key.
3. Use arrow keys to set current time. See Fig. 11.
4. Press Done key.
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
INSTALLER SETUP
The comfort control works with many different system
types. To operate correctly, the comfort control must be
set up to operate the installed heating and/or cooling
system.
4. Release the two blank keys when the screen on
the comfort control matches the screen below.
Follow these steps to enter the Installer Setup:
1. Be sure the comfort control is powered.
2. Press and release the System Key.
THU
FAN
ON
DONE
Inside
Set To
AUTO
Following
Schedule
SYSTEM
ET
A
M
M22649
SCHED HOLD CLOCK SCREE
M22647
5. See screen below to review how the comfort con-
trol keys are used during Installer Setup. See Table
4 for Installer Setup Numbers and Settings.
3. Press and hold the two blank keys on either side of
the center blank key for approximately five
seconds until screen changes.
ADVANCE TO NEXT
INSTALLER SETUP
INSTALLER
SETUP
NUMBER
CURRENT
SETTING
MO
TU
WE
TH
FR
SA
SU
Inside
Set To
MON
WED
THU
FRI
SAT
SUN
Following
Schedule
SYSTE
M
EM
HEAT
OFF
DONE
CANC
DONE
CHANGE THE
CURRENT
SETTING
PRESS TO EXIT
INSTALLER SETUP
M22650
M22648
6. Press the Done key to exit the Installer Setup
screen.
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
IMPORTANT
The Installer Setup Menu (Table 4) shows all available options. These options customize themselves as you
make selections to Installer Setup. So not all Installer Setup Selections are shown or are available
to change.
Table 4. Installer Setup Menu.
Factory Setting
Other Choices
Installer
Setup
Number
Select
Option
Description
Options
Description
Comments
Not used.
1 thru 0099
0120
—
—
—
—
—
Date (Year
Upper)
20
05
Set first two digits of 21
current calendar
year (20 for year
2005, etc)
21 —first two digits of
current calendar year (21xx) available
2000 -2178
Date (Year
Lower)
0130
Represents last two 00 -99
digits of current
calendar year
Select last two digits of
current calendar year.
2000 -2178
available
(2005).
Date (Month) 0140
6
Digit(s) represents 1-12
current calendar
month.
Select number that
represents current calendar
month.
—
—
Date
(Day)
0150
0160
15
Digit(s) represents 1-31
current calendar
date.
Select number that
represents current calendar
date.
Schedule
Options
4
1
7-day programming
0
0 —nonprogrammable
—
System Type 0170
Selection
1 Heat/1 Cool
System
1-6
1—1 heat/1 cool
2—single-stage heat pump and defaults vary
Available options
(no aux. heat)
by comfort
control. System
selection
automatically
modifies some
default settings
and/or hides other
Installer Setup
options.
3—heat only (no fan)
4 —heat only (with fan)
5—hot water Series 20
(3-wire or normally open
zone valves)
6—cool only
FanOperation 0180
0
Heat/cool appli-
cations where
equipment controls
fan operation in
heat mode.
1
Heat pump or electric heat Only shown if
applications where comfort heat/cool system
control controls fan
is selected. If heat
pump is chosen,
fan defaults to
electric.
operation in heat mode.
Cycles per
hour (cph) for
1st Stage
0220
0240
3
5
Compressor Stage 1-6
1 cycles per hour
(cph)
1-6 available;
3 is recommended.
—
Compressor
Cycles per
hour (cph) for
Heater
Heater Stage 1
cycles per hour
(cph).
1-12
1-12 available; typical
settings:
1—1 cph used for steam or is heat pump.
Not shown if
system selection
Stage 1
gravity system.
3—3 cph used for 2-stage
Selection in this
stage changes
fossil fuel forced air systems default cph for
or hot water systems.
5—5 cph used for single-
stage fossil fuel forced air
systems.
2nd stage heat.
9—9 cph used for electric
forced air heat systems
(electric auxiliary heat for
heat pump systems).
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
Table 4. Installer Setup Menu. (Continued)
Factory Setting
Other Choices
Installer
Setup
Number
Select
Option
Description
Options
Description
Comments
Continuous
Backlight
0280
0
Backlight not on
continuously.
Comfort control
backlight comes
on with each key
press.
1
Backlight is on continuously Option is always
(comfort control must have a shown; however,
common wire attached for
this function).
continuously on
backlight works
only if comfort
control is wired
with 24 Vac
Common.
Changeover 0300
Deadband 0310
0
3
Manual changeover 1
1—auto changeover
—
Heating and cooling 2 thru 9 Heating and cooling
Shown only if
automatic
changeover is
selected.
setpoints can be set
no closer than
setpoints can be set no
closer than chosen
va lu e:
°
°
3 F (1.5 C)
°
°
2—2 F(1 C )
°
°
3—3 F(2 C )
°
°
4—4 F(2.5 C )
°
°
5—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)
Temperature 0320
Indication
Scale
0
1
0
Temperature is
1
Temperature is displayed
—
°
°
displayed in F.
in C.
Daylight
Savings
0330
0340
Daylight savings
enabled (United
States).
0
0—daylight savings is
disabled.
Set to 0 in areas
that do not follow
daylight savings.
Remote
No remote
temperature sensor
1,3
1—outdoor temperature
sensor for display only.
3—indoor temperature
sensor.
Defaults and
Temperature
Sensor
(Outdoor or
Indoor)
Options depend
on System Type
selected. Indoor
Temperature
Sensor uses an
averaging
network and does
not include on-
board sensor.
Furnace Filter 0500
Change
Reminder
0
Furnace filter
change reminder off
1-6
1—1 0 r u n t i m e d a y s
2—3 0 r u n t i m e d a y s
3—6 0 r u n t i m e d a y s
4—9 0 r u n t i m e d a y s
5—1 2 0 r u n t i m e d a y s
6—3 6 5 r u n t i m e d a y s
Run time based
on call for fan.
Humidifier
Pad
Replacement
Reminder
0510
0
Humidifier pad
replacement
reminder off
1-3
1—90calendardays
2—180calendardays
3—3 6 5 c a l e n d a r d a y s
—
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
Table 4. Installer Setup Menu. (Continued)
Factory Setting
Other Choices
Installer
Setup
Number
Select
Adaptive
Intelligent
Option
Description
Options
Description
Comments
0530
1
Adaptive Intelligent
Recovery™ control
is activated (system
starts early so
0
0—conventional recovery
(system starts recovery at
programmed time)
—
Recovery™
setpoint is reached
by start of program
period).
Number of
Periods
0540
0580
4
5
Four periods
available (Wake,
Leave, Return,
Sleep)
2
Two periods availbable
(Wake and Sleep)
Not shown if non-
programmable is
selected. 2 or 4
applies to all days
of the week.
Minimum
Compressor
Off Time
Five-minute
minimum off time
for compressor
0, 2, 3, 4 Minimum number of minutes Five minutes
compressor is off between recommended.
calls for compressor
Heat
Temperature
Range Stop
0600
0610
90
50
Highest heating
setpoint.
40 to 89 Temperature range (1°F
increments) of heating
setpoint.
Shown in 1/2 °C.
Shown in 1/2 °C.
Cool
Temperature
Range Stop
Lowest cooling
setpoint.
51 to 99 Temperature range (1°F
increments) of cooling
setpoint.
Clock Format 0640
12
0
12-hour clock
format
24
24-hour clock format
—
Extended Fan 0650
on time Heat
No extended fan
operation after call
for heat ends
90
Fan operation is extended
90 seconds after call for heat operation is set to
ends.
Not shown if fan
fossil fuel or in
Cool Only
Systems
Extended Fan 0660
on time Cool
0
0
No extended fan
operation after call
for cool ends
90
Fan operation is extended
90 seconds after call for cool Heat Only
ends.
Not shown in
Systems.
Keypad
Lockout
0670
Unlocked keypad
1, 2
1—partially locked
keypad
2—fully locked keypad
Unlocked—all
functions are
available.
Partially locked—
only temperature
up and down keys
and ability to
enter and modify
Installer Setup
mode are
ava ilab le.
Fully locked—
only ability to
enter and modify
Installer Setup
mode are
available.
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
Table 4. Installer Setup Menu. (Continued)
Factory Setting
Other Choices
Installer
Setup
Number
Select
Option
2
Description
Standard
temperature control
in heating
Options
Description
Comments
Applies to
Temperature 0680
Control in
1, 3
1—less aggressive
temperature control (could recovery ramp
Heat
cause temperature
u n d e r s h o o t )
3—more aggressive
temperature control (could
cause temperature
overshoot)
and use of
auxiliary heat
during recovery.
Choose 1 if
getting
temperature
overshoot.
Choose 3 if
getting
temperature
undershoot.
Temperature 0690
Control in
Cool
2
Standard
temperature control
in cooling
1, 3
1—less aggressive
temperature control (could recovery ramp.
cause temperature
Applies to
u n d e r s h o o t )
3—more aggressive
Choose 1 if
getting
temperature control (could temperature
cause temperature
overshoot)
overshoot.
Choose 3 if
getting
temperature
undershoot.
°
°
Temperature 0700
Display Offset
0
0
No difference in
displayed
temperature and
actual room
-3, -2, -1,
0, 1, 2, 3
—
-3 F(-1.5 C )
- 2 ° F ( - 1 ° C )
- 1 ° F ( - . 5 ° C )
0 F ( 0 . ° C )
temperature
1 ° F ( . 5 ° C )
2°F ( 1°C)
3°F (1.5°C)
Reset
0710
No comfort control
reset.
1
Resets all Installer Setup
Options to default values
and resets schedule to
default setting.
Only calendar
settings and time
are retained.
Comfort
Control
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
SYSTEM CHECKOUT
ADVANCED FEATURES
Installer System Test
Outdoor or Indoor Temperature Sensor
The Installer System Test mode is used to test the HVAC
system(s). See Table 5. While in System Test mode,
minimum off -time for compressors is bypassed.
For accuracy, the initial reading of the indoor or outdoor
temperature sensor requires fives minutes to stabilize.
See the Sensor instructions for installation information.
The Installer Test is part of Installer Setup options. Enter
Installer Setup screen and press Down arrow key to bring
up test selection(s) quickly.
CAUTION
Equipment Damage Hazard.
Minimum compressor off-time is bypassed
during Installer System Test.
Avoid cycling compressor quickly.
Table 5. System Test(s).
Factory Setting Other Choices
Description
Installer
Setup
Select
Number Options Description Options
Comments
Installer Test
Cool
Test 1
0
Cool is off
1
0—cooloff
1—cool stage 1
turns on
System selection deter-
mines tests available and
number of stages shown.
Installer Test
Fan
Test 2
Test 3
0
0
Fan is off
Heat is off
1
1
0—f an off
1—fan turns on
—
Installer Test
Heat
0—heatoff
1—stage 1heat on
—
Pub. No. 18-HD25D18-1
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TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
TROUBLESHOOTING (SEE TABLE 6)
Table 6. Troubleshooting.
Symptom
Possible Cause
Action
Display does not come on.
Comfort control is not
being powered.
Check for 24 Vac between B and Rc.
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.
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 correct position.
System type Selection is
incorrect.
Check Installer Setup Number 0170 and make sure
correct System type is chosen.
Comfort control is calling for
Heat (Heat on) or Cool (Cool
on) but no heating or cooling
is running.
Heating or cooling
Check wiring.
equipment is not operating. Check Installer Setup Number 0170; verify correct
system type is chosen.
Verify equipment operation in System Test mode.
Comfort control does not
respond when touchpad is
pressed.
The keypad is locked.
Check Installer Setup Number 0670 to change
keypad locked options.
American Standard Inc.
Troup Highway
Tyler, TX 75711-9010
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
Pub. No. 18-HD25D18-1
69-1787-1 G.H. 02-05
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